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1

Flooring Materials


Dhiraj Bandurkar Home Family/Home Family 2007-07-08
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Flooring Materials

Just a couple of decades ago, wall to wall flooring was quite popular among the homeowners, but then there were not so many options to experiment with. The only choice the homeowners could get those days were linoleum which was quite popular for the kitchen flooring and the other was the inexpensive vinyl tiles which used to be covering the bathrooms. Since then, with the changing times, there have been a lot many developments and the choices of flooring materials have evolved with the changing needs of the homeowners. Now what we find in the market is the wide variety of flooring materials which not only give you a great choice but are superior to the earlier materials in more than one ways.

So what are the choices today and why are the flooring materials more superior? The choices today are a combination of the finest materials in various colors and textures and pricing to suit every budget. Today the most popular flooring materials are wooden, stone, hardwood, vinyl, linoleum, cork, oak and tiles etc. These materials can be used separately or in combination in the same house or even in the same room. There can be many combinations with these materials which can work out according to your creativity. The flooring materials available today are far more superior and cost effective to the earlier choices we had. The flooring material today offers more choice, durability and easy for installation and maintenance. So at the end of the day it works out to be more cost effective and hence superior.

To make a choice of the flooring material you need to weigh it on many aspects. These can be flooring material style, scale, texture and additional design elements. These aspects depend a lot on carpet space or space to be floored, taste of the homeowner, comfort level, and finally budget. If you are planning to have a flooring makeover, study the work to be executed based on these aspects so that you will be more prepared to make a choice when it comes to choosing a flooring material and its overall installation.

Some materials become a popular choice because of many functional qualities. One such popular flooring material is Vinyl. Vinyl sheet flooring is much popular in United States and you will find it used extensively across your neighborhood. Vinyl sheet flooring is sometimes essential from the safety point of view to areas like kitchen and bathrooms which are exposed to wear and tear. Vinyl sheets offer a great traction compared to other materials like stone or hardwood and are a safe flooring choice in home areas which experience moisture. Vinyl flooring also gets cleaned easily and saves time on maintenance. Apart from vinyl other flooring materials popularly used are hardwood, stone, cork, oak etc. So if you want something exciting and comfortable at the same time in your house, try changing the floor.


2

Greenhouse Design Materials


Michelle Torres Home Family/Gardening 2008-02-28
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When you choose to build a greenhouse or have one built for you, you have several material options. Depending on your budget and environmental awareness will depend on which materials best suit your needs.

Some of the many greenhouse framing materials include: metals such as alum, steel and aluminum. There are materials made of wood such as redwood, which is both sturdy and beautiful. Then there are synthetics such as plastic, PVC, resin, fiberglass and composite materials. When it comes to choosing your building materials you should do adequate research on each item.

Speak to a clerk at a local garden center or a customer service representative from a greenhouse catalogue or online store. These helpful resources will be helpful in discussing the strength, durability and cost of each of the above materials. You can also use said resources to view these products. It’s always a more pleasant shopping experience when you can see an item with your own two eyes.

When considering your greenhouse design materials, don’t forget about the greenhouse cover as well. You will want to look for strength and durability since this is exposed to the elements. You will also want to look for materials that are mold and mildew resistant. Keeping theses in mind will be a way to safeguard you from purchasing materials that don’t get the job done or have to be replaced over and over in a short amount of time.

When you design your greenhouse, keeping this information in mind can help insure that you build a sound greenhouse full of quality and strength. This will help you put your mind at ease that your money was well spent. After all taking the proper amount of time to choose your proper design materials will surely end your project with great success.

About the Author: Michelle Torres has nearly 20 years experience using and designing greenhouses and is an avid gardener. You can find additional useful information about greenhouses and greenhouse gardening at http://www.greenhousecatalog.com


3

Visulization of Sss Materials


meera Reference Education/Science 2008-04-14
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Visualization of SSS Materials.

SSS Materials: [Triple S Materials]
Materials possessing grain size on the order of a billionth of a meter. Since nano materials posses unique, beneficial, chemical physical and mechanical properties they can be used for wider variety of applications. We can see the presence of nano materials everywhere and how it is superior to other materials which are being used now days and earlier. Nano materials can be called as SSS materials as they are SMALL, STRONG and SMART.

Amazing Resistance power:
Tungsten Carbide , Tantalum Carbide and Titanium carbide are much harder , much more wear resistant, erosion resistant and last longer than their conventional counter parts. Miniaturization of micro electronic circuits ,the industry needs microdrills( drill bits with diameter less than the thickness of average human hair or 100μm) with enhanced edge retention & far better wear resistance. Since nano crystalline carbides are much stronger, harder , and wear resistant they are currently being used in these microdrills.
High Energy Density batteries:
The life of conventional and rechargeable batteries is low. Nano crystalline materials synthesized by Sol-gel techniques are the ones for separator plates in batteries because of their foam-like (aerogel) structure, which can hold considerably more energy than conventional ones. Nano crystalline nickel and metal hydrides are envisioned to require far less frequent recharging and to last much longer because of their large grain boundary (surface) area and enhanced physical , chemical , and mechanical properties.
Pollution Eraser:
Due to their enhanced chemical activity, nano materials can be used as catalysts to react with such noxious and toxic gases as carbon monoxide and nitrogen oxide in automobile catalytic converters and power generation equipment to prevent environmental pollution arising from burning gasoline and coal.
Mega Power Magnets:
The strength of a magnet is measured in terms of coercivity and saturation magnetization values. These values increase with a decrease in the grain size and an increase in the specific surface area of the grains. The magnets made of nano crystalline yittrium-Samarium-cobalt grains posses very unusual magnetic properties due to their extremely large surface area. Other applications:
Automobile alternators, land-based power generators, motors for ships, ultra-sensitive analytical instruments and magnetic resonance imaging (MRI) in medical diagnostics.

High Sensitivity Sensors:
Sensors employ their sensitivity to the changes in various parameters they are designed to measure. The measured parameters include electrical resistivity chemical activity, magnetic permeability, thermal conductivity and capacitance. All these depend greatly on the microstructure of the materials employed in the sensors. The sensors made nano crystalline materials are extremely sensitive to the change in their environment. Applications for sensors made out of nano crystalline materials are smoke detectors, ice detectors on air craft wings, automobile engine performance sensor etc.
Enhancing Efficiency of Automobiles:
Currently automobile engines waste considerable amounts of gasoline thereby contribute to environmental pollution by not completely combusting the gas. A conventional spark plug is not designed to burn the gasoline completely and efficiently. Since nano materials are stronger, harder and much more wear –resistant and corrosion resistant they are presently being envisioned to be used as spark plugs.
These electrodes render the spark plugs longer-lasting and combust fuel far more efficiently and completely. Automobiles waste significant amounts of energy by losing the thermal energy generated by the engine. This is especially true in the case of diesel engines. Hence the engine cylinders (liners) are currently being envisioned to be coated with nano crystalline ceramics, such as Zirconia and alumina so that they retain heat much more efficiently and result in complete and efficient combustion of the fuel.

Improvising the performance of Aerospace Components:
Due to the risks involved in flying aircraft manufacturers strive to make the aerospace components stronger, tougher and last longer. One of the key properties required of the aircraft components is the fatigue strength which decreases with the component’s age. By making the components out of stronger materials the life of aircraft is greatly increased. SSS materials i.e nano materials provide such a significant reduction in the grain size over conventional materials that the fatigue life is increased by an average of 200-300%. Further more components made of nano materials are stronger and can operate at higher temperatures, aircrafts can fly faster and more efficiently. So nano materials are the best substitute for spacecraft applications.

Other side of ceramic materials:
Ceramics are very hard, brittle, and hard to machine. These characteristics of ceramics have discouraged the potential users from exploiting their beneficial properties. However these ceramics must posses nano crystalline grains to be superplastic. i.e it can be deformed to great great lengths (up to 300% of its original length).Nano crystalline ceramics, such as silicon nitride, and silicon carbide have been used in such automotive applications as high strength springs , ball bearings and valve lifters because they posses good formability and mach inability combined with excellent physical, chemical and mechanical properties. They can also be used as components in high-temperature furnaces.
Computer chips of future generation:
The micro electronics industry has been emphasizing miniaturization, where by the circuits, such as transistors, resistors, and capacitors are reduced in size .Though microprocessors run faster there are several technical impediments to these advancements including lack of the ultra fine precursors to manufacture these components, dissipation of heat energy due to faster speed short mean time failures etc. Nano materials break these barriers down by providing the manufacturers with Nano crystalline starting materials ultra high purity materials, materials with better thermal conductivity, longer lasting durable inter connections.(connections between various components in microprocessors).
Large Electronic Display Devices:
An electronic device consists of material which an optical absorption band can be introduced or an existing band can be altered by the passage of current through the materials, or by the application of an field. Nano crystalline materials such as tungsten oxide gel are used in very large electro chromic display devices. The resolution, brightness and contrast of these devices greatly depend on the tungstic acid gel’s grain size .Hence nano materials are being explored for this purpose.
HDTVS:
The resolution of the television or a monitor depends greatly on the size of the pixel. These pixels are essentially made of materials called “phosphors” which glow when struck by a stream of electrons inside the cathode ray tube (CRT).The resolution improves with the reduction in the of the pixel or the phosphors. Nano crystalline Zinc selenide, Zinc sulfide, cadmium sulfide and lead telluride synthesized by the sol-gel technique are improving the resolution of the monitors. The use of nano phosphors is envisioned to reduce the cost of displays so as to render high definition televisions and personal computers

FLAT-PANEL DISPLAYS:
Flat-panel displays represent a huge market in the lap-top computers industry. The flat-panel displays constructed out of nano materials possess much higher brightness and contrast than the conventional ones owing to their enhanced electrical and magnetic properties.

Longer Lasting Satellites:
Satellites are being used for both defense and civilian purposes. These satellites utilize thruster rockets to remain in or change their orbits due to a variety of factors including the influence of gravitational forces exerted by the earth .Hence these satellites to a large extent is determined by the amount of fuel they can carry on board . In fact more than 1/3 of the fuel carried aboard by the satellites is wasted by these repositioning thrusters due to incomplete and inefficient combustion of the fuel such as hydrazine. The reason for the incomplete and inefficient combustion is that the on board ignitors wear out quickly and cease to perform effectively. Nano materials such as nano crystalline Tungsten-titanium diboride-copper composite are potential candidates for enhancing these ignitors life performance characteristics.
Conclusion:
We have seen only the few applications of nano materials. Many new applications being discovered almost everyday . There are many other applications and uses which have yet to be covered. From the applications we can see that such a small material does wonder in all the fields of science. Their strength and physical chemical and mechanical properties show that their presence in varsity of applications. Really the materials are smart and even specific too. As we study their characteristics deeply we can enjoy the performance of these peculiar materials.


4

Materials For Kitchen Countertop


Home Family/Home Improvement 2007-07-18
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One of the most important parts of kitchen that indicate and has great impact to over all appearance of the kitchen is countertop. Kitchen countertop represents taste and lifestyle of the house owner. This is due to kitchen countertop use most of space in a kitchen so it is essential for you to carefully consider when you have to choose one. Moreover, kitchen countertop could change atmosphere of the kitchen and countertop materials is also important as choosing the right kitchen counter make most of your renovation dollars can be something of a challenge.

There are two materials that popular among home owner for making kitchen countertop. They are granite and ceramic. Both of materials are unique in terms of durability as well as colour and design. Even though they are much more expensive than other materials but these two kitchen countertop materials are still the first choice among home owners due to the uniqueness and benefits already mentioned above. There are also other materials that also becoming popular, marble. Even though marble is a kind of hard material that can be used for kitchen countertop, but marble may have disadvantage because marble may not resist to some kind of acid and comes from cooking activities.

However, some of people still would love to have other kind of materials for their kitchen countertop such as wood, vinyl, plastic etc. In fact this materials still OK for countertop but they may not durable as concrete countertop. This is because, for example, wood could not resist to moisture and some other chemical agents and it is also sensitive to the weather that always changing. So today we rarely see the kitchen that uses wood for kitchen countertop. Instead, they prefer to choose concrete countertop as they know that how well they hold up under a myriad of conditions typical in the kitchen environment.

There are two main types of counter top available in the market today. You have to be careful when considering because these two types are much different in terms of price. The first is generally called pre-made countertops. This kind of countertop normally available in one piece and then installed into your kitchen. This type is much cheaper than the second type as it is quite not flexible for custom made countertop. You may need to hire professional contractor to help n installation but there are some designs that specially designed for easy install so you can do by yourself.

The second type is fully custom made countertop design. For this case, the only way id you have to hire professional contractor to build kitchen countertop for you. You have to bare in mind that this type of countertop may have a lot more flexibility because you can ask designer to create any style that you want but it is also very expensive and may not suitable for ones that has very limited budget. However, there is one thing that you have to carefully consider if you choose this type. That is you have to make sure that you get professional with enormous skill and precision to achieve the outcome you desire.

5

Store Fixture Materials


Ron Maier Business/Marketing 2007-05-18
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Retail store fixtures come in all shapes, sizes, and materials, so narrowing the search for the right store display fixtures for your retail store might seem daunting. A great way to narrow this search is by first considering the different store fixture materials. When you decide on a material that works well with your design, products, and budget, you can move on from there with a more focused approach. This will also keep your store coordinated with one type of material, rather than cluttering your sales floor with random fixtures of completely different materials. Wood fixtures next to plastic ones, and pressed wood next to metal displays are not usually appealing, so try to keep it simple with the right materials.
The main choices of store fixture materials are metal, wood plastic, and conglomerates. Metal fixtures of course come in a large variety of styles and qualities, from custom fixtures to gridwall displays. Years ago, metal fixtures were considered too heavy and over priced, and they were primarily used for large industrial settings. However, the advancement in technology has allowed for the production of lighter products at cheaper prices with many more store fixture styles to choose from. Metal displays are now extremely common for check-out displays, garment racks, shelving systems, and even display counters. Metal usually brings a slick, modern look to a retail environment, while remaining extremely durable and easy to clean.
Wooden store fixtures have been a long time favorite in retail garment and merchandising displays. Perhaps the most appealing quality is the general appearance of wooden fixtures. Depending on the wood and quality of crafting, wood fixtures are often used in boutique and higher end retail displays. As you might imagine, the prices can be higher. Consider the difference in price of metal desk and that of a solid cherry desk. The difference could easily be $500 for the same functionality. At the same time, there is a large variable in wood fixture prices based on their quality and craftsmanship. Solid wood displays are beautiful, but the quality of merchandise and store budget are huge factors in deciding to outfit a store with wood. Wood must also be cleaned and polished frequently to keep it looking nice and new.
Plastic and conglomerate displays are obviously the cheapest store fixture options. They are light-weight and come in an enormous variety. However, this is at the sacrifice of durability and commonly, visual appeal, but they work perfectly for a new store or for someone selling inexpensive products. Plastic and conglomerate (such as pressed wood) displays serve extremely well as temporary displays being light-weight and economic.
By deciding on the right store fixture materials, you have completed half of the search for the right store fixtures. Be consistent with your decision and match your products and customer base to the appropriate fixtures.

About the Author: Ron Maier is the Vice President of S & L Store Fixtures, a leading online provider of gridwalls,gridwall accessories, slatwalls, mannequins, and mannequin forms. S & L is also a valuable resource for many categories of store fixtures and retail store displays. For more information, please visit http://www.slstoredisplays.com.

6

Store Fixtures Materials


Ron Maier Business/Sales 2007-05-18
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Retail store fixtures come in all shapes, sizes, and materials, so narrowing the search for the right store display fixtures for your retail store might seem daunting. A great way to narrow this search is by first considering the different store fixture materials. When you decide on a material that works well with your design, products, and budget, you can move on from there with a more focused approach. This will also keep your store coordinated with one type of material, rather than cluttering your sales floor with random fixtures of completely different materials. Wood fixtures next to plastic ones, and pressed wood next to metal displays are not usually appealing, so try to keep it simple with the right materials.
The main choices of store fixture materials are metal, wood plastic, and conglomerates. Metal fixtures of course come in a large variety of styles and qualities, from custom fixtures to gridwall displays. Years ago, metal fixtures were considered too heavy and over priced, and they were primarily used for large industrial settings. However, the advancement in technology has allowed for the production of lighter products at cheaper prices with many more store fixture styles to choose from. Metal displays are now extremely common for check-out displays, garment racks, shelving systems, and even display counters. Metal usually brings a slick, modern look to a retail environment, while remaining extremely durable and easy to clean.
Wooden store fixtures have been a long time favorite in retail garment and merchandising displays. Perhaps the most appealing quality is the general appearance of wooden fixtures. Depending on the wood and quality of crafting, wood fixtures are often used in boutique and higher end retail displays. As you might imagine, the prices can be higher. Consider the difference in price of metal desk and that of a solid cherry desk. The difference could easily be $500 for the same functionality. At the same time, there is a large variable in wood fixture prices based on their quality and craftsmanship. Solid wood displays are beautiful, but the quality of merchandise and store budget are huge factors in deciding to outfit a store with wood. Wood must also be cleaned and polished frequently to keep it looking nice and new.
Plastic and conglomerate displays are obviously the cheapest store fixture options. They are light-weight and come in an enormous variety. However, this is at the sacrifice of durability and commonly, visual appeal, but they work perfectly for a new store or for someone selling inexpensive products. Plastic and conglomerate (such as pressed wood) displays serve extremely well as temporary displays being light-weight and economic.
By deciding on the right store fixture materials, you have completed half of the search for the right store fixtures. Be consistent with your decision and match your products and customer base to the appropriate fixtures.

About the Author: Ron Maier is the Vice President of S & L Store Fixtures, a leading online provider of gridwalls,gridwall accessories, slatwalls, mannequins, and mannequin forms. S & L is also a valuable resource for many categories of store fixtures and retail store displays. For more information, please visit http://www.slstoredisplays.com .


7

Home Remodeling Materials


Taisha Grant Home Improvement/home improvement 2007-03-20
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Home Remodeling may or may not include flooring. The choice of flooring material available is quite impressive. The very choice of such a wide range of products makes the business of choosing comparatively easier. But it's a Herculean task to decide upon a type of flooring that's close to the budget and preference.

Flooring has been categorized as Antique, Bamboo, Chestnut, Commercial, Cypress, Engineered, Granite, Hardwood, Laminated, Limestone, Linoleum, Parquet, Refinished and Slate, Vinyl etc., etc.

Wooden flooring can either be new or antiques reclaimed from old homes. For instance, hardwood mix flooring - remilled from salvaged lumber is a good choice where a decision about the type of flooring suiting the need and personal style can't be made. A first-growth hardwood is hardly available now, it's better to go in for various types of woods salvaged from old homes and barns. Such reclaimed woods are treated, kiln dried and cut into various lengths.

Bamboo flooring is said to be denser than maple and more stable than red oak. Available in plenty, bamboo is cut into strips, pressure cooked and kiln-dried. Bamboo flooring is consistently colored and needs no staining.

Engineered flooring is modernized production of wood flooring. Made of three or more ply's of wood, engineered wood has more stability than solid wood. This is available in different stains and finishes.

Floor tiles are available in various finishes, styles and colors. Porcelain tiles are treated in higher temperatures than the ceramic tiles. This makes the porcelain tiles stronger, denser and stain resistant. Porcelain tiles are designed to look like marble and can be used in kitchen and bath.

Ceramic tile is today one of the most used flooring materials. Available in an exciting range of colors including classic black and white, and various finishes, ceramic tiles can be easily installed as seamlessly as natural granite.

Linoleum is one of the most commonly used flooring materials for kitchens. It's made from natural raw materials including linseed oil, chalk, wood flour, and pine resin. This floor covering comes in a range of over 30 colors in sheet, tile and planks. Linoleum is hard to beat for its durability, easy maintenance and environmental friendliness.

Granite makes an ideal floor covering with its natural hardness and non-porous surface. Unusual shade variations, colors and grain patterns make granite one of the favored flooring materials.

Whatever is the material chosen for flooring, care should be taken to see that it's suitable for all the family members. Fancy, but hard to maintain or materials that require constant cleaning and are easily damaged should be avoided. Granite or ceramic tiles glow as much as they are polished. But polishing makes the surface slippery. Highly polished flooring proves to be hazardous to even the most agile and young person. When there are elderly people and children in the home, it's advisable to keep the floor polishing to the minimum. Wooden flooring too needs careful handling and constant maintenance. Expert advice should be called for maintenance and repairs.

Flooring surface is important, but more important is the personal love and care that'll keep the home warm and happy.


8

Metal Roofing Materials


webmaster greenfin Home Family/Home Repair 2008-02-22
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In the discussion of metal roofing (see Metal Roofing: A Buying Guide), the word "metal" covers a lot of ground. Several metals are used for roofing materials: steel, stainless steel, aluminum, copper and zinc alloys. Each has different properties that affect durability, price, and appearance.

Steel, used for most metal roofing, is heavier and sturdier than aluminum. Manufacturers have settled on a number of durable coatings and finishes that protect steel from rust and corrosion. It's usually zinc-coated for corrosion protection, then sealed. A coating of epoxy primer offers adhesion and a baked-on acrylic top coating adds color and protection. Because sheet systems are designed for commercial applications, they generally are given highly durable paint finishes. One popular flurocarbon coating used on many products is called Kynar(r). Stainless steel--a very expensive roofing material--won't rust or corrode. Terne coating (see below) can give it a natural, matt-gray finish.

Aluminum, extremely lightweight, is the material used in much residential metal roofing. It won't rust, but must be painted or coated for appearance. Coatings are similar to those used on steel. Environmentalists express concerns about using this precious resource for purposes such as roofing. Copper metal shingles make a visually striking roof that may last as long as the house.

Copper, rooted in centuries of use, will not rust, has no "finish" to scratch or peel, is soft enough to easily tool, and weathers naturally to a beautiful verdigris patina. Unfortunately, it's very expensive. Alloys are formulated for strength, graceful weathering and durability. Cost depends on the specific material but, as a group, they are pricey.

The Benefits of Metal Roofing

Metal beats out conventional roofing materials on a number of counts:

Expected life. Properly installed, a metal roof should last as long as the house, completely sealing out water, surviving high winds and easily shedding snow. Metal is resistant to fire, mildew, insects and rot. Warranties vary widely but most companies strongly back their products for from 20 to 50 years.

Weight. Compared to tile at 750 pounds per square (an area equal to 100 square feet) or concrete tile at 900 pounds per square, metal roofing is lightweight. Most are from 50 to 150 pounds per square. Some types of metal shingle systems may be applied over one or two existing roofs without the need for tear-off or adding structural support. In fact, if you're building a house or an addition, you can often downsize or reduce the number of roof support members.

Speed and ease of metal roofing installation. Most metal roofing materials come in multi-shingle sections or in sheets. An accomplished contractor can install these quickly. If your roof is stripped off and a storm is on the way, shortening the process by a day or two may prove to be a critical advantage. Note: You can also buy single metal shingles that are relatively easy--but time intensive--to install. (Unlike three-tab asphalt shingles, each piece must be individually placed and nailed.)

Fire resistance. Because metal roofs are noncombustible, they're given a Class A fire rating (the most resistant). Part of a roof's classification depends on materials beneath the surface that could ignite in intense heat, so some metal roofs applied over an old combustible roof--such as wood shingles-- may be rated lower.

Heat conduction. Metal reflects radiant heat from the sun, minimizing midday heat gain. Though the material itself is low in insulation R-value, many systems utilize a dead-air space between the metal and roof deck to increase energy efficiency.

Minimal roof pitch. Most metal roofing materials can be installed on gently pitched roofs without danger of leaking. Typical minimum roof pitch is 3-in-12 (the roof rises 3 inches for each horizontal foot).

Metal Roofing Drawbacks

Though metal roofing offers many pluses, there are a few drawbacks or concerns worthy of consideration. For the most part, roofing manufacturers have faced these concerns and improved their products to address or solve many of them.

Cost. The biggest drawback is initial cost. Metal roofing is equivalent to other premium materials: from about $150 to $600 per square (100 square feet). The secret is that you get it back if you stay in the house for a long time. Of course, if you plan to move in a couple of years, you probably won't get the cost returned in value. Figure you can also save on engineering the supporting structure and maintenance.

Noise. For some, the sound of rain tapping on the roof is romantic and homey; for others, it's like living inside a drum. In a rainstorm or hailstorm, living beneath thin sheets of metal is bound to be noisier than beneath thick slate or tile. Noise can be controlled, however, both by using materials that have structural barriers to minimize the drum effect and by applying them over sound-deadening insulation and solid plywood sheathing.

Denting. Just as your car will dent if a golf ball hits it, a metal roof may dent if large hailstones fall on it. Aluminum and copper, much softer than steel, are more prone to denting. Some are guaranteed not to.

Though you shouldn't have to walk on a roof that doesn't leak, there may be occasions when a plumber needs to snake out a vent pipe or a chimney sweep will need access to the chimney flue. You can walk on some metal roofs, but not all--depending on how the particular product is made and the type of construction supporting it. Also, metal is slippery when wet.

Marring. Some painted finishes can peel, chip, fade, scratch or chalk, although nearly all are guaranteed for many years. Walking on some types--particularly those with a granulated-stone surface--may show wear. Installers must be careful not to scratch or dent roofing during installation--panels must be treated with care. Unlike conventional roofing, some metal shingle systems are installed from the top down, eliminating the need to walk on them. Once installed, it may be necessary to hose-off roofing now and then to keep it looking good.

Expansion and contraction. Because metal expands and contracts as it warms and cools, most new products have fastening systems that account for movement; otherwise, fasteners that secure roofing tend to work loose.

Modification. Roofing materials installed in large panels are more difficult to replace if damaged than individual shingles. Also, if you remodel or add-on to your home 10 or 20 years from now, it may be difficult to match the material.

For maintenance and restoration of metal roofing please visit Metal Roofs. www.fixallroofs.com , 2660 North Ave Suite 214 Bridgeport, CT 06604


9

Evaluating Flooring Materials


David H Urmann Home Family/Home Improvement 2008-04-27
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Carpets, laminated, wood, and stones are some of flooring materials that could beautify your homes. Know the best for you by visiting FlooringMaterials.Net.

Everyday we step on various kinds of flooring materials but we never pay enough attention to their details. One cannot even take a second look at the floor he is stepping on not unless the floor is sophisticatedly made as if it is asking you over to look at it. Although some may not give enough attention on this, truth is, flooring is the one that makes or breaks the impression of the house or any other building. Back then wall-to-wall carpeting is the way to go but these days; this idea was overshadowed by other flooring techniques that provide evidences to be more glamorous, sensible and elegant.

There are actually a lot of flooring materials to choose from and one of those are laminate floorings which started as an alternative to solid hardwood flooring. Some may still have apprehensions of using this kind but careful planning is the only key. Manufacturers had finally taken for consideration of adding designs that are created with toughness and precision. The laminate flooring is available and offered in the market in finishes like word, marble, stone, bamboo and other kinds. Installation is possible to almost any kind of sub-floor surfaces as long as they are flat and smooth. They may also be available in “snap-together” kind that would not require any glue or other adhesives to create a no-gap proficient looking finish and even offers the user of a hassle-free installation.

For people who would rather stick with wood as their flooring material, they have two options and that is to choose between softwoods and hardwoods. This kind can last for a long period of time and they need a little maintenance consequently saving your energy of scrubbing all the time. If your house was on carpet for some time and you finally decided to show the woods beneath it, no need to worry since they can now be restored into their former glory!

Moreover, stone is another flooring material that can be used. It is a big hit for modern people who would want their entire house to be concrete in appearance! Stone flooring is among the most elegant and perhaps the oldest kind of flooring since it has its roots during the medieval period. There are a lot of reasons why this kind is becoming a hit among people and one of those is the fact that it depicts natural patterns and colors that could captivate owners and the guests alike. Stone also loses heat faster than any other flooring so it gives a cool feeling and this is also highly hygienic since it is smooth and non-porous in nature. It also possesses a bacteria-resistant ability. Maintenance is easy too, plainly wipe with a damp cloth or mop then you are all set! However, if you want floors that shout then specialty floorings are for you! Materials like leather, steel and concrete can be utilized in order to emphasize a building or room's features to the fullest. Leather is durable and it gives the feeling that the room is worth a million bucks by its modishness. Also, concrete can now be formed into various shapes and colorings. These specialty floorings will give the floor a different and exquisite looks.

10

Kitchen Sink Materials


Faucet.com Home Improvement/home improvement 2007-04-23
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Kitchen sinks are made from all kinds of materials, from enameled cast iron, porcelain on steel, vitreous china, natural stone, to stainless steel and more. Listed below are some of the most popular kitchen sink materials.

Stainless Steel Sinks - the neutral color for the kitchen and the most popular style of sink. Stainless steel works in both traditional and contemporary kitchens and they'll complement your decor long after trendy colors are out of style. Some have integrated counter tops & larger, deeper bowls. Though it may scratch, it's easy to clean with a household cleanser and soft towel. They won't chip, nick, crack or rust, stain or fade. The sanitary surface is just one reason healthcare facilities use them. Finishes include a mirrored finish which is shiny and brushed or satin stainless which is less likely to show scratches. Some sinks come as a combination with a satin bowl and mirrored rim. Most stainless steel sinks are undercoated with a sound deadening material to reduce noise, inhibit condensation and provide for better heat retention.

Enameled Cast Iron Sinks are a solid cast iron base layered with a deep enamel surface. These sinks are extremely heavy and resist almost any type of structural damage. Due to their weight, these long-lasting sinks are a little more difficult to install. They do, however, provide for good heat retention and are quieter than other types of sinks.

Americast Sinks are a remarkable alternative that's more durable and weighs half as much as traditional cast iron sinks. It's insulation properties allow it to retain heat longer and emits less sound. Americast is American Standard's patented process that bonds the high-quality porcelain enamel surface with an enameling grade metal and a molded reinforcement material backing. This strengthens the sink for normal use and the smooth surface is very appealing.

Vitreous China & Fireclay Sinks are a ceramic-based material with baked on porcelain; best recognized for its smooth and glossy finish. This type of sink is often referred to as a county or French country style. The material is impervious to water, very durable and is available in almost any color, including hand-painted and sculptured designs. Damage could occur if a heavy object is accidentally dropped into the sink. It is easy to clean and is germ-resistant.

Manmade Materials - Also called Engineered Stone, which is an authentic solid surface. Color and texture run all the way through and cannot wear away.

Copper Sinks - This style of sink adds uniqueness to the kitchen. Most copper sinks are crafted from the finest quality copper. This super-thick copper is hand-hammered, and formed into a work of art that adds a touch of class to any kitchen. Copper sinks have a living finish, their patina ages and improves over time, therefore it resists stains and other discoloration. They are also the healthier choice because bacteria cannot grow on copper. You can choose from a natural "weathered" copper or dark bronze for a warm dark look. They are offered in "natural" or polished and finished in satin nickel. Most copper sinks are heavy because of their extra-thick casting process. This enables a lifetime of use while absorbing noise and repelling dings and scratches.


11

Patio Furniture Materials


Tom Houser Home Family/Home Improvement 2007-06-15
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Patio furniture or garden furniture is furniture made specifically for outdoor use. It should be made of weather resistant material. Some of the materials used today for patio furniture include stone, metal, vinyl, plastic, glass, and treated woods.
Patio furniture consisting of a table, four chairs and a large sun umbrella is the most common patio set. Some sets include a long chair known as a chaise lounge.

Patio furniture made of wood is quite versatile. With or without cushions is how wood patio furniture is used. There are many different types of wood frames to choose. Here are most types of wood used for patio furniture: pine, oak, cypress, teak, mahogany, cedar, maple, birch and beech, as well as a number of exotic hardwoods.
You can paint, oil or stain wood. Some wood like teak can be almost carefree if you allow it to weather to a beautiful silver-grey color. You must re-oil, re-stain or repaint your wood patio furniture from time to time.

Teak wood is the most durable, stable and beautiful wood used for patio furniture. Grade A teak means you will not find knotholes or cracks in the wood. Kiln-dried means your teak patio furniture is dry to the core, with a moisture content of 12% to 15%, which means it will not shrink, slip or move. Machine made means that you can rely on the quality and consistency of the furniture construction.

Teak has a much greater ability to withstand the elements than any other wood due to its natural oils. It has been the preferred choice for boats because of its ability to withstand the elements. Teak wood is valued in warm countries primarily for its extraordinary durability. Teak wood is a valuable resource for its countries of origin because of its long life along with its durability and reliability.

Teak wood is not just for high-end patio furniture. It can also be for shipbuilding, door and window frames, wharves, bridges, flooring, paneling, and Venetian blinds. Teak refers specifically to the wood and its characteristic color, which ranges from olive to yellowish gray or light brown. Teak furniture dates back prior to the 19th century. The Chinese exported Teak to Europe.

Patio furniture is available at many different locations nowadays. Be careful when making your purchase. There is a lot of cheap poorly made patio furniture sold, so do your homework!

If you would like your outdoor furniture made of wood then research Teak wood and compare it to other types of wood patio furniture. Remember, Teak wood patio furniture is the most durable and weather resistant wood you can have for patio furniture.

12

ARCHIVAL MATERIALS & METHODS:


BIll Harvey Self Improvement/Collecting 2007-02-06
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ARCHIVAL MATERIALS & METHODS:

A Chemistry Lesson to Help you Protect and Preserve your Collectibles and Antiques:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


What a complicated subject this is! First off -it might be helpful to sort out the difference between things that are made to be archival and things that are made to protect things of archival value. For example, the paper you buy on sale at the office supply store to run through your Xerox machine or printer is NOT archival. But an expensive piece of art had better-dang-well-be painted or printed on a piece of paper that you can count on being around for a long time.

On the other side of the coin, there is the stuff you use to protect / store / display valuable stuff. Key word here is "protect." Suppose you carefully tuck your collectible away in a nice cushy bed of whatever and put it safely away for years and years. Then you take it out -or let's be frank here- your heirs take it out even more years down the road- and find that the stuff you so conscientiously used for padding has dissolved into ugly goo and smeared itself all over your item. Your valuable collectible held up perfectly, but is now worthless -or certainly less valuable. This is actually the topic I want to address in this article, but a few words on archival materials is in order -then I move on-to protecting collectibles with archival SAFE methods.


ARCHIVAL MATERIALS
Everyone has heard of "acid free" and it sounds like a good thing. Acid is -after all- corrosive -it can burn you and this must be a bad thing. But it turns out that everything is acid. Or alkaline -which is the same thing -only the complete opposite. Your body is acid -slightly. All fruit juice is acidic, carbonated beverages -by virtue of that carbonation over-and-above the fruit juice- is acidic. Vinegar is a good strong acid -"acetic acid" by name. Lemons make you pucker-up because of citric acid -chemically right next to ascorbic acid -better known as Vitamin C.

So why is acid in certain things bad -and conversely, why is 'acid-free' a good thing? Near as I can tell, things that get manufactured -paper for instance- are easier to manufacture if they have some chemistry done to them. Acid is certainly a sub-set of chemistry. You didn't learn about acid in your HS American Literature class did you? My point here is that things that are pretty much the way God made them are safe from self-destruction from the acids they contain. (This is not to say that there are not other ways for them to get messed up -remember from my article on Bio-Hazzards, that if God made it, He (She?) also made something that eats it.) But wood is probably not going to turn yellow and brittle like a cheap paper-back book. A real butterfly is not apt to curl up and crack like a decorative plastic one. An oil painting (linseed oil & ground mineral pigments on cotton or flax fabric) is not going to fade the way a movie poster does, made with cheap paper and printed with quick drying organic inks.

So what do you do if you have something you value and want to have around for a long time, but you are not sure it's made out of archival materials? Actually, there is not much you can do. Ask questions when you buy it, but does the seller look like they know their chemistry? There is one possibility. There are de-acidification sprays made to spray on paper (and photographs). Such things go on wet and do chemistry to your collectible. Are you a little hesitant to spray some chemical goo all over a valuable document or image? Don't blame you. One expert -Dennis Smith of Archival Methods* says that such things in the hands of a casual user can do more harm then good. If it's this valuable, you would do well to go to a pro who knows the chemistry.

But before you even do this -you must ask yourself if you have done all the other things a collector can do to protect his or her collection? Consider.....

UV & Light Protection

Using DESICCANTS

Protection from Bio-Hazards



ARCHIVAL SAFE METHODS:
This side of the coin deals with storing and protecting your valuable items in a manner the actually protects them. Let me give you an example of how NOT to do it. This is a direct quote from a nice lady -a curatorial expert actually- who helped out when I wrote my article -A Visit to the Fabric Store,:

"And velvet, well, my opinion is still bad, bad, bad. Velvet and silver is a 500% Don't Do It.--you will have hundreds of etchings over the surface that look as if tiny worms had burrowed just beneath the surface--and they're not fixable. Saw it firsthand once, and it was amazing."

Imagine that -you work very hard to protect something you cherish -with velvet -soft luxurious velvet even -it's padded and tucked away safely and one of the very things you do to protect it -ends up ruining it!

So what to do to protect your collection -the way the museum professionals do -the guys with advanced degrees and who can spell CHEMESTRY with out getting help from SpellCheck every-dang-time? A little vocabulary might be a helpful way to start out.

ACETATE
A plastic that may be good (tri-acetate) or bad (di-acetate).

ACID-FREE
Means just that. But you also need to know about...

ACID MIGRATION
If something that contains no acid is stuck closely enough to something that does contain acid -the acid moves into the acid free thing. The moral here is to be careful of what you stick the valuable thing in to / on to / next to.

ACRYLIC
Good plastic for archival undertakings. Stiff, clear and chemically stable.

ALKALINE
The opposite of acid and probably a good thing. Unless it's a bad thing.

BUFFER
A unique sort of chemical thing that is the opposite of both acid and alkaline -it neutralizes -or 'buffers' both. (And if this confused you -find yourself a chemistry teacher to s'pain it 'cause it don't make a lick of sense to me either.)

HYGROSCOPIC
A material capable of absorbing moisture from it's surroundings. This can be good or bad. Desiccants are hygroscopic on purpose. Paper is hygroscopic to some degree -can't be helped- and as such, paper may come to be nourishing to fungi and mildew. BTW both hops and alcohol are hygroscopic and absorb water from places like your brain and the lining of your bladder, which makes it smaller. Don't need to discuss the later effect -but a dehydrated brain is a large part of what is called a 'hang-over.'

LIGNIN
A component of wood fiber that breaks down into acid. The good news is that most of the lignin is taken out of most paper -except newsprint. Archival safe materials are almost entirely "lignin free."

MYLAR & MELINEX
Trade names for an absolutely inert and absolutely vapor-proof plastic. It has archival value in protecting things from atmospheric nastynesses.

OUT-GAS
(Cool word! Has a scientific edge to it and is useful for insulting people who are too full of hot air.) This is the tendency for some things to slowly emit various damaging gasses. See.....

PLASTICIZER
Stuff in plastic that makes it more flexible. Plasticizers tend to evaporate / 'volatilize' / 'out-gas.' All this means that some plastics emit 'goo' that can mess up the things you store in them. A discussion of the good plastics and the bad plastic would quickly degenerate into something very like a graduate level organic chemistry class so -for the time being- if it smells like a cheap new shower-curtain- you are smelling the evil plasticizers and this is a bad thing.)

POLY-----
Most plastics start with the word "poly" and go downhill from there. In general, the good plastics for protecting valuable things are polyester, polypropylene, and, acrylic. (They don't smell.)



HOW-TO...
Now this is curious, but after longish introduction and bothersome vocabulary lesson, I have comparatively little advice for you. Too much stuff gets itself collected and there is too much variation in what it's made out'a. None-the-less, consider the following:

* Buy your self a few pairs of white cotton gloves and keep them close to your collection. If nothing else,this will impress people who you let -reluctantly or otherwise- handle your collectibles.

* Learn how to protect your specific collection. Having made it through my article, you now know more then 95% of the people out there and so such an undertaking will be a piece of cake. The AIC -American Institute for Conservation of Historic and Artistic Works -is an excellent resource. A slightly intimidating resource, it must be said, but an excellent resource. I know this because they say most of what I have said in my articles on preservation -they just use a lot more and bigger words. And they offer advice specific to....

* SPECIAL COLLECTIONS -sort of a catch-all article
* ARCHITECTURE
* Books (This is what I collect!)
* CERAMICS AND GLASS OBJECTS
* FURNITURE
* METAL OBJECTS
* PAINTINGS
* PHOTOGRAPHS
* DOCUMENTS AND WORKS OF ART ON PAPER
* HOME VIDEOTAPES (!?!)
* TEXTILES
* MATTING AND FRAMING WORKS OF ART ON PAPER

* If you are using fabric to cushion, protect, and display your valuables, read my article on Fabric for the Collector

* Learn about DESICCANTS and get yourself some!

* If you are collecting photographs or things on paper, check out what the folks at Archival Methods have to say. (And notice that they sell desiccant kits too!)

* At the very least -order a bunch of their archival tissue paper. 480 sheets of the stuff -16" x 20"- will set you back just a little over $20.00. I suspect that if you have a nice collection in a collection of boxes that may or may not be archival, this tissue would go a long way to both preventing any acid migration and cushioning the objects.

* If all the above has succeeded only in frightening you about your real REALLY valuable collections of X, find yourself a conservation consultant. The AIC has Guidelines for Selecting a Conservator. (But be prepared to spend some money.)



IMPORTANT LINKS:

The folks at Gaylord Brothers, take this business pretty seriously. They also offer an absolutely excellent on-line (free!) book on simple techniques for the maintenance and repair of books, BOOKCRAFT

Archival Methods is a good company, with helpful people and a web-site you need to see.

Art-Care is where to go to find out where, how, and with whom to spend money -but it also has excellent information and experts.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Bill Harvey is an expert cabinet maker and the Author of HOW-TO CORNER -a series of usefull online articles for the dedicated collector or hobbyist to use in protecting and displaying his or her valuable items. He is also the owner of Home-Museum.com -a source for display cases and drawer cases designed and built specifically for collectors.


13

Hazardous Materials Regulations: Transporting Radioactive Hazardous Materials


Joe Trzepla Finance/Insurance 2007-10-23
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Safety is always a priority for drivers. This is especially true for those transporting hazardous materials. Strict adherence to federal and state hazmat regulations is imperative. Failure to comply with these regulations can result in stiff fines and penalties, including being barred from working with commercial transports. As the providers of long-haul trucking insurance (www.directtruckinsurance.com), we find it beneficial to make these regulations known to you.

As with all hazardous material shipments, transports carrying Class 7 radioactive materials must be clearly marked. Radioactive loads are an especially safety sensitive cargo. Merely being near such cargoes can be dangerous. Accidents involving trucks carrying radioactive materials can have consequences that threaten the lives of thousands of people.

Routes

It is the responsibility of drivers and motor carriers to choose among state designated routes for those that will minimalize radiological risk. In making this decision, it is important to consider a variety of factors including population density, accident and traffic history, and road and highway usage at the times of day that the truck will be traveling.

Deviation from state designated routes is only permitted in a handful of circumstance. If it is necessary for the truck to leave the route to pick up or offload Class 7 materials, deviation is permitted. A driver is also permitted to leave designated routes for emergency situations and for rest, fuel, and repair stops. Any deviation from the designated route must be the shortest possible deviation and must not exceed 25 miles.

Route Plans

Carriers or designated agents are required to provide a written route plan to the driver and to the shipper. Any deviations from the route plan must be documented by the driver and returned to the shipper. Route Plans must include:

-origin and destination points
-route
-planned stops
-estimated departure and arrival times
-emergency telephone numbers for each state traveled

Driver Qualifications

A driver will not be permitted to carry Class 7 materials unless they have had proper training within two years prior to the transport. This training includes an understand of the requirements for regulation 49 CFR parts 172, 173, and 177, as well as the properties of radioactive materials and emergency and accident procedures when radioactive materials are involved.

The driver must also have the following information on their person during the transport

-name and operator’s license number
-dates that training was completed
-the name and address of the person conducting the training
-statement from trainer that the driver has been trained in the hazards and characteristics of highway route controlled quantity of Class 7 materials
-route plan

Within 90 days of the beginning of the transport, the driver must file a report with the following information with Office of Enforcement and Compliance (MC- ECH), Federal Motor Carrier Safety Administration, 400 Seventh Street, SW., Washington, DC 20590-0001:

-amended route plan
-statement identifying the names of the carrier, consignee, and shipper
-copy of the shipping paper with a description of the Class 7 materials transported

14

Building Materials And Roofing Materials UK


Sameer Shinde Home Family/Home Improvement 2007-03-28
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Reclaimed Building Materials - Reclaimed Roofing Materials – Architectural Salvage, Timber & Flooring

UK based Billingshurst Building and Roofing Suppliers (16th century building supplies) has one of the best stocks of Roofing tiles, Building bricks, Flooring timber, Garden Ornaments and Miscellaneous decorative items in Sussex, England and serves SE England.

We are a family firm serving the local, national and even international community for the last 15 years. We are constantly looking for the unusual. Being a small firm our overheads are low and so are our prices. We offer the broadest range of building product information for professional homebuilders and roofers meeting the needs of building professionals and homeowners with the finest products and unusual stock.

Reclaimed roofing materials include reclaimed roofing tiles, ridges. Gullies and valleys, handmade tiles, ridges, chimneys. Chimney pots, roofing slates, finials, and Horsham Stone.

New roofing materials include handmade clay and factory made clay roofing tiles, ridges and roofing lead. We offer many major brands of roofing materials.

Building consists reclaimed building materials and new building products. Reclaimed building materials include hand made and machine made new and old bricks, York stone paving, oak flooring, old beams, edging stones, garden statues,street lamps, flagstones, architectural salvage in old bricks, reclaimed flooring tiles quarry tiles and old pavers, beams and chimneys.

New building supplies include bricks, pavers, Indian Sandstone paving, marble fountains, timber doors, oak gazebos, granite sets, rockery stone. We can supply most types of new brick and can make any fancy shapes to order. Also decorative bricks and specials with varies shapes and designs including numbers, dates,airbricks, pictures, many post tops and plaques. We dedicated to offering the best floor covering solutions. Our flooring is available in a multitude of finishes, styles, textures, and colors to suit every taste and complement any décor.

Garden ornaments include new marble fountains, clay pots, chimney and ceramic patio warmers. Recovered garden items include marble statues, marble fountains and street lamps.

In short, we supply sale a fine selection of roofing products included such as Horsham Stone Roofing Slate – Reclaimed,Chimney Pots, Roofing Tiles, Roof Fittings, Welsh Slate and Roofing Tiles. Our building materials include as Bricks- decorative & special, Coping Stones,Pavers & Paving, Vintage Flagstones, and Paving - York stone. Also a fine selection of Flooring such as Oak Flooring and planks, Tiles - Brick shaped, quarry, clay and Paving bricks. Our collection of timbers consists of Oak Flooring and planks, Pine Doors, Oak Beams, Timber Sleepers and Garden House. We also supply a wide selection of Ornaments for sale like Garden Ornaments, Patio Warmers, Streetlamps, Carvings & Chiminea and Clay Pots. We also offer a huge stock of garden accessories such as Paving stones, Garden Posts, Garden Bench, Paving Setts and Garden Ornaments. Our decorative miscellaneous itemsconsist of Fireplace – Bespoke, Antique Coffee Table, Fire backs and Chandeliers and Lighting.

We also offer join the mailing list as we want to help you find building, roofing or ornamental products. We are continually updating and adding to our ranges, particularly within the building market, therefore, should you be unable to find a product to suit your requirements on our site please contact us.Our friendly and knowledgeable staff will be pleased to help you.


15

Future Technology - Smart Materials


Ash Tankha Technology/electronics 2007-06-07
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A family of materials with an ability to change few of its original properties by the application of any external stimuli, such as stress, temperature, moisture, pH, electric and magnetic fields are called Smart Materials. Some of the materials which include in this class of materials are piezoelectric materials, magneto-rheostatic materials, electro-rheostatic materials, thermo-responsive materials, pH-sensitive polymers, halochromic materials, electro chromic materials, thermo chromic materials and photo chromic materials. Smart materials are lifeless materials that assimilate different functions such as sensing, actuation, logic and control to adaptively react to alterations in their environment to which they are exposed, in a constructive and mostly recurring way.

To quote a few illustrative examples of smart materials undergoing change in their property due to effect of any external stimuli, we will consider piezo electric materials.Piezo electric materials are those materials which generate voltage due to the application of stress. The reverse effect of production of stress when voltage is applied across the piezo electric materials also holds good. Hence, we find extensive application of piezo electric materials as sensors in different environments. They are mainly used to measure fluid compositions, fluid density, fluid viscosity, or the force of an impact. An example from our day to day life would be an airbag sensor in cars, where the piezo electric material senses the force of an impact on the car and sends an electric charge, there by triggering airbag inflation.

Another example of piezo electric material would be electro–rheostatic and magneto-rheostatic materials, which undergo change in their viscosity. These are fluids which almost change to a solid substance from a thick fluid in a matter of a millisecond, when exposed to a magnetic or electric field. Electro-rheostatic fluids undergo viscosity change when exposed to an electric field whereas magneto-rheostatic fluids undergo similar changes when exposed to a magnetic field. Some common electro–rheostatic fluids are milk chocolate or cornstarch, while magneto-rheostatic fluids are minute iron particles suspended in oil.

Thermo-responsive materials such as shape memory alloys or shape memory polymers are smart materials which change their shape with change in temperature. Magnetic shape memory alloys experience shape due to considerable changes in magnetic field. pH-sensitive polymers enlarge or collapse when they experience change in pH of the surrounding medium. Halochromic materials change their color in response to change in acidity. One of the most common application of such materials would be in paints which undergo change in their color as an indication of corrosion of the material beneath them. Chromogenic systems change their color due to the effect of electrical, optical or thermal changes. Electro chromic materials change their color or opacity as a result of the application of voltage, thermo chromic materials change in color based on changes in temperature, and photo chromic materials change their color in response to a change in light. An application of electro chromic material would be in liquid crystal displays and an application of photo chromic materials would be in sunglasses which darken on exposure to bright sunlight.

Smart materials find a wide range of application areas due to their varied response to external stimuli. The different areas of application can be in our day to day life, aerospace, civil engineering applications and mechatronics to name a few. The scope of application of smart material includes solving engineering problems with unattainable efficiency and provides an opportunity for creation of new products that generate revenue. Sensual devices which can sense their environment and produce information to make use of in health and usage monitoring systems (HUMS) find applications in aerospace for the purpose of aircraft checking. An airline requires umpteen numbers of man power which conduct routine, ramp, intermediate and most important checks in order to check the health and usage of fleet. These checks involve quite a number of tasks that demands a lot of time. Hence, an aircraft constructed from a sensual structure has an advantage of self-checking its performance to a greater level than that of current data recording, and provide ground crews with improved health and usage monitoring. This would reduce the expenses associated with HUMS and thus such aircrafts could fly for more hours without human intervention.

These sensual structures also find application in the area of civil engineering. They are used to monitor the civil engineering structures to evaluate their durability. They are also used in food packaging to keep a check on safe storage and cooking. However, smart materials and structures are not restricted to sensing but they also adapt to their surrounding environment and such materials have an ability to move, vibrate and demonstrate various other responses, in addition to the sensual aspects. Few applications of such adaptive materials include the capability to control the aero elastic form of the aircraft wing to reduce the pull and improve operational efficiency, to control the vibration of satellites’ lightweight structures, etc.


16

Source Building Materials Online


Mark Foreman Business/online business 2007-10-08
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Source4me is a newly established National web & telephone based builders merchant, dedicated experts in the sourcing and supply of specialist and hard to locate building materials.
As well as providing an urgent requirement service throughout the UK.
Source4me are able to source and supply building and construction materials to builders, developers, home owners, self build, contractors, surveyors, local authorities and other builders merchants.
With their new website located at http://www.source4me.co.uk it contains information on how to make an enquiry, examples, contact information and an online enquiry form.
To the best of their knowledge Source4me are the 1st builders merchants to offer such an extensive service.
Source4me makes no charge for submitting an enquiry and obtaining a quotation, via the online form, email or telephone 0845 803 7769.
Types of materials sourced, may vary from a timber profile or brick which is not in manufacture, to specialist foams.
It may be that you are unable to obtain your building materials requirements from your usual suppliers quickly enough for your on-site requirements.


17

Choosing From Among Countertop Materials


Candice Sabrina Home Family/Home Management 2007-06-30
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Any homeowner who has successfully transformed their kitchen space will surely tell you of the countertop's ability to completely set the tone of the kitchen and the overall home. There are a variety of countertop materials from which you can choose; all of which carry their own personal style and character.

Choosing from among all of these beautiful materials can often be a long decision making process. Ultimately, deciding between different countertop materials comes down to personal style, functionality, and budget.

Some of the more popular countertop materials available today include a variety of choices that fit an extensive variety of budgets and styles. Most popular - as much for its affordability as its durability - are laminates. This material continues to be used nationwide and is the countertop of choice in most American homes.

The material itself comes in an extensive array of colors, textures, and styles - and the choices continue to grow every day. Such material is then processed through a high-pressure system and thinly applied to particleboard or plywood. Consumers even have the ability to choose laminate that resembles high-end stone, granite, or ceramic tile; subsequently getting the look they want without the high price tag.

The downside to laminates is just what makes it so affordable. The material is only the surface layer of the countertop; it is not a solid piece. So if water or other liquids are allowed to seep below the surface and infiltrate the layers of particleboard the result is warping and damage. Further, laminates are not resistant to heat, scratching, and impact. Care must be taken to protect these countertop materials from damage in order to keep them looking their best.

Ceramic tile is another one of the more popular countertop materials. Beautiful and durable, ceramic tile is installed one tile at a time in a collage of colors, patterns, and textures that make up the bigger picture. Grout is used to connect the tiles and the result is a beautiful mosaic of color. Ceramic tile comes in a variety of styles and can be installed by either a professional or do-it-yourselfer. It is relatively easy to maintain and generally unaffected by heat or humidity.

Natural wood is another of the countertop materials that has maintained its popularity over the years. Because wood easily integrates into any decor, homeowners find that it s the perfect neutral palette for any kitchen and adds an element of elegance and warmth. It must be noted, however, that wood of any variety needs to be cared for properly as it is vulnerable to heat and moisture - both of which can cause irreparable damage.

Of course, one of the most widely used countertop materials is stone. This is generally the most expensive option when it comes to kitchen countertops but its beauty and durability are well worth the price in most circumstances. Consumers can choose between granite, marble, or engineered stone; but the result in all cases is instant sophistication and elevated functionality. This is often the pinnacle of countertops as its resilience and beauty can last for generations.


18

Natural Braided Rug Materials


Mitch Endick Home Family/accessories 2007-11-26
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When most of us think of the classic braided rug, we think of various weaves made up of yarns and fabrics. Woolen yarns and cloth scraps were the materials most widely used by early rug weavers. While it is true that rag braids and yarn weaves are the most popular and most available, there are beautiful braided rugs that are made from a wide variety of plant based materials.

In no small part, the environmental movement has spurred the use of renewable materials in many aspects of our lives. The tradition of braided rugs started out using left over materials such as scraps of cloth. The modern use of renewable materials can be seen everywhere. Flooring made from renewable materials such as bamboo and cork is gaining in popularity. Bamboo, hemp and jute fibers are used in a variety of fabric blends and you can find beautiful woven and braided rugs made from these versatile materials.

One material that is widely used for braided rugs is jute. Jute fiber has been used for thousands of years for everything from rope and twine to paper and other commercial uses such as backing for carpet. Unlike synthetic materials, jute has a tremendous advantage since it is completely biodegradable. When it is processed in various ways, jute can be fashioned into fabrics and yarns that can then be and woven into beautiful braided rugs.

Jute can be dyed and colored in several ways, including the use of vegetable and other types of plant based dyes. When dyed properly, jute will retain the color quite well. It is color fast, meaning the color will not fade with use. Jute can be treated with certain chemicals and compounds that can improve qualities such as softness and workability. This is important when jute is used in yarn applications. To make yarns, jute is often blended with cotton, wool or other fabrics adding strength and durability.

Like other widely used plant fibers like bamboo and hemp, jute is a renewable fiber source that grows prolifically without the need for chemical fertilizers, herbicides and insecticides. Including the fibrous inner material of the jute stalk that is used to produce the fiber, virtually all of the jute plant is used. Even the leaves are used as a food source.

Bamboo is another renewable plant fiber source that is being used more and more as a fabric. Bamboo is fast growing and requires very little in the way of cultivation. Bamboo has several very interesting properties that make it an excellent fabric. Bamboo contains a long lasting, natural antimicrobial compound. Bamboo fiber retains this antimicrobial property throughout the life of the fabric, even after repeated cleanings.

Like jute, bamboo has a very high tensile strength so the fabric has good wear properties. Bamboo fabrics are lightweight making it an excellent choice for clothing, from shirts and pants to socks. Because it has a very high absorbency rate, bamboo even makes for soft and absorbent bath towels. Quality bamboo fabric is so soft that it has been compared to cashmere wool. Bamboo fabrics can be dyed and can be bleached using processes that are environmentally friendly.

No wonder that bamboo fabric is being used to produced quality braided area rugs. Easy to clean, and with its antibacterial properties, bamboo and bamboo blends make an excellent choice for making unique braided rugs.

Last but certainly least is the use of hemp fabric in crafting of braided rugs. Like jute and bamboo, hemp can be cultivated with little work and without using harmful chemicals. Strong and versatile, hemp fiber can be made into a variety textile products including braided rugs.


19

Bulk Materials Handling Equipment


Camille Howe Business/Business 2008-01-29
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Any business that is involved in the production of items from raw materials needs to have a robust internal distribution system in place that can allow for efficient movement of things that are required from storage to the production area in the factory floor. The larger your operation, the more efficient it can be, and the lower that the costs of manufacture can be forced, however, this focus on large scale production means that specialist bulk materials handling equipment must be put into place in order to be able to properly handle the volume of supplies that are needed in the factory.

The central aim of bulk materials handling equipment is to ensure that more items can be carried from storage to the factory at a lower cost without having a significant impact on safety. Fork lift trucks are often the basis for many of the innovative products that are available to handle raw materials, and there are a number of different adaptations that can be fitted to the forks in order to make moving easier.

One of the most popular items of bulk materials handling equipment currently available is the standard fork mounted hopper that can be attached to the standard forks of a regular truck. Ideally, the hopper can be loaded with items for disposal by staff, or filled with raw materials in the warehouse before being carried on the forklift.

There are a number of different hoppers available from many companies that will enable you to carry goods around from one place to another. These hoppers have been designed to carry different items safely, and are robust enough to ensure that they will not be damaged during normal use. There are self tipping hoppers available as well as units that have been specially designed to carry dust, liquid and powder type items without spilling them around the workplace. Hoppers can be used to carry large amounts of material safely.

A wide variety of different fork lift extensions are available that allow your standard forklift to be adapted to carry specific items such as drums and bags. They can improve the way in which your forklift is utilized and ensure that its role is maximized wherever possible. With greater flexibility, it will be able to fulfill a greater number of tasks in the warehouse, and give greater return on the investment that you have made in it.

For easier transport, larger items are palletized during transportation, and in order to move them around the warehouse, specific bulk materials handling equipment is required. Using a forklift to move items through the factory is not always a good idea, as it can be dangerous. It is more sensible to use a pallet jack. These are easier to maneuver in use, and much lower in cost than a forklift. These jacks can be handled by a single person, and used to lift full pallets where required.

Other bulk materials handling equipment that is needed for the modern factory includes the whole range of cranes such as gantry cranes and jib cranes that are needed to lift and manipulate the heaviest items into place so that they can be worked with effectively.


20

Least Expensive Bedroom Furniture Materials


Home Family/Home Family 2008-01-21
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As you begin to explore furniture stores on your quest to find new furniture for various bedrooms in the house, you'll notice that there are extreme variations in price, even between beds that appear to be similar and of comparable quality. What makes the difference in the price, and what are the least expensive bed materials that you can purchase?

If you are looking at discounted bedroom furniture, you're going to find a mix of prices on different materials. However, with standard store pricing, cherry bedroom furniture is probably going to be the highest cost material you'll find. The wood itself is not as common as cedar or oak, and it is more difficult to manufacture. Mahogany is also a higher-end material. Both cedar and oak bedroom furniture can be found for reasonable prices. This inexpensive bedroom furniture is especially nice because it can be stained to appear similar in color to more expensive woods, so you can achieve the same design factors for a smaller price.

Less expensive than these wood beds are some types of metal beds. For example, brass beds will cost about the same as a typical cedar or oak bed. A brass bed will last a long time and be quite sturdy, though it requires a little more care than wood and will need to be polished every once in awhile and frequently rubbed down for fingerprints to maintain shine. Wrought iron beds are inexpensive as well, and when you are purchasing master bedroom furniture, you'll find that this is a popular option on the market with a lot of styles to choose from. A wood and iron bed can run you about the same price as well, giving you another decorating opportunity altogether.

One of the most inexpensive bedroom furniture materials you'll find is MDF - medium density fiberboard. Though constructed in the same manner as the flimsy particle board that is found in the drawer bottoms of so many cheap dressers, this material is thicker and stronger and, due to the resin, is even heavier than wood. Many casual bedroom furniture sets will include at least some MDF to save on the cost of manufacturing, making the end product cheaper and more appealing to consumers.

Of all the various materials that bedding is made out of, aluminum is probably the least expensive. While it is durable, it doesn't tend to last as long as other materials, rusting, becoming tarnished, or flaking (especially if painted). This material is commonly used in kids' bedroom sets because they are replaced more frequently and therefore don't need to hold up as long. Also, since Mom and Dad have to spend money to replace their boy's or girl's bedroom furniture a couple of times, they want to save on the cost, and aluminum is the least expensive way to go.

So, from the top down, you have hardwood items, like cherry wood, with oak and cedar just under that cost. Then, you'll find brass and wrought iron, or a mixture of wrought iron with wood to be the next step down in price. MDF will save you a lot of money, but the least expensive bed material is probably aluminum.

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