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What is Hand Arm Vibration? Hand Arm Vibration is the effect of long term or extreme vibration exposure from power tool use. It can result in the following medical conditions. vibration white finger carpal tunnel syndrome permanent and painful tingling and numbness in the hands and arms damage to bones in the hands and arms painful joints and muscle weakening Not too nice is it? It is estimated that hundreds of thousands have advanced vibration white finger. Minimizing HAV More modern tools are designed to reduce vibration. Some tools isolate the human contact zone from the vibrating parts - which is excellent. So in purchasing power tools for yourself or your employees consider this very strongly, not just to be a nice fellow but as far has health and safety go it is a sound investment. International codes have been implemented that require revealing the vibration level of a tool. The units of vibration are in meters/second/second. Try to avoid using tools above 2.5 Regular maintenance and tuning of tools will keep them operation at recommended level, and always give appropriate training in using the tool and using the right power tool for the job. Power tools are great and used safely they are even better. Concrete Cutting: The Unknown Niche Robert Short / Affordable Concrete Cutting 152d What is Concrete Cutting? Concrete cutting is a process of controlled sawing, drilling and removal of concrete performed by skilled operators using special saws that use diamond impregnated blades. Unlike the old- fashioned dusty jack hammer method, modern concrete cutting leaves a smooth attractive finish and utilizes water so as not to create any dust or mess. There are many different kinds of concrete cutting but the most common are wall sawing, core drilling and slab or flat sawing. Wall Sawing is the process of cutting openings such as doors or windows in concrete walls, usually no more than 12 thick but in some cases up to 24 thick. This is accomplished by using a saw that attaches to a track on the wall to be cut. This process utilizes an enormous 30 or even larger diameter diamond blade that can cut 12 or more of concrete all of the way through from one side. This aspect of our business requires the most skill and cannot easily be done by your average do it yourselfer. As stated, wall sawing may entail cutting openings in concrete foundations but may also include lowering a foundation elevation, entire foundation removal and also the cutting of concrete retaining walls in part or in whole. This type of concrete cutting requires skill and experience to cut perfectly smooth plumb and level openings with virtually no dust or mess, so it is a rather expensive service. Most concrete cutting companies charge a minimum of $425 just to take their equipment to a site and cut. Homeowners that build additions on to their home that have basements or cellars commonly find they need to cut into their existing concrete foundation to add an entry or passage between the new and existing basements. It is much easier and in most cases less expensive to have this service performed during the construction process and not after. Core Drilling is the process of drilling perfectly round holes through concrete walls and floors. The diameters of the holes range from 1 to 12 round but average 5 for most homeowner applications. In commercial applications core holes can range anywhere up to 60 round and more. Core holes are used for utility penetrations such as electrical, plumbing and heating but are also commonly used for venting furnaces or clothes dryers. Although not recommended, core drilling can be performed by an advanced do it yourselfer and the equipment necessary to perform core drilling is readily available at your local tool rental and supply store. Most companies have a minimum charge of $250 to core a hole for you and it can take a professional as little as 10 minutes to unload his equipment, core the hole, and reload his equipment. Yet, I have seen homeowners rent the equipment and spend an entire weekend trying to core a single hole and then call a professional to complete the project. Just like with any trade a professional concrete cutter will make his job look easy. Slab sawing, also known as flat sawing, is used to cut horizontal flat concrete surfaces such as floors, bridge decks and pavement. Slab saws feature a diamond blade that is mounted on a walk-behind machine that requires only one operator. They can cut up to 33 inches in depth but generally only 6 or less is necessary in most homeowner applications. Slab sawing is the perfect solution for making penetrations or openings in concrete floors to access and repair a broken water pipe or sewer line. When a basement or cellar is being remodeled to add a bathroom the concrete is removed to add new plumbing for the fixtures. A slab saw is also useful in demolition work to break up and remove a cracked or unwanted patio, driveway or walkway. Sometimes a homeowner might want just part of a patio or other concrete slab cut in order to alter their landscaping. Attempting a slab saw project can be very time consuming for your average do it yourselfer however it can be accomplished. I always recommend spending a few extra bucks and saving yourself some very serious danger and aggravation by contracting a concrete cutting professional. No matter what your project is, don't let a little concrete stand in your way. Concrete can be a homeowner's worst obstacle if he or she doesn't know that there are companies out there that specialize in removing it very quickly and neatly. To find a reputable concrete cutter I recommend that you start with the yellow pages and always check them out with your local Better Business Bureau or your local Department of Consumer Protection. To get more acquainted with the industry just do a search for concrete cutting and check out a few websites dedicated to the subject. Of course, be sure to visit our web site at www.affordableconcretecutting.com. Copyright 2005 Affordable Concrete Cutting Inc. All Rights Reserved About the AuthorAffordable Concrete Cutting services the contractor and homeowner in and around Boston and Eastern Massachusetts. We specialize in cutting doorways in concrete foundations.Visit our website at www.affordableconcretecutting.com http://www.aaarticles.com/article10564.html | ||||||||||||||||||||
