Archive for December, 2010
Process of Steel Truss and Steel Reinforced Concrete Detailing
Posted by alibabarika in Business News on December 1, 2010
Now a days Steel truss are widely used in residential and industrial construction and that’s why need of steel truss detailing are raided day to day. A steel truss, or lattice structure, is a structural assembly of small interconnected elements. Trusses can be designed to suit a wide range of requirements. There is considerable design flexibility for roof trusses, but simple rules can be used as initial guidelines. Steel trusses offer effective routes for distributing services. It can have a rectangular configuration, avoiding the potential intrusion of diagonal members, if the joints are rigid.
The nature of a steel truss allows for the analysis of the structure uses a few assumptions and the application of Newton’s laws of motion according to branch of physics known as statics. For purposes of analysis, trusses are assumed to be pin jointed where the straight components meet. This assumption means that members of the truss will only act in tension or compression.
Concrete Fasteners – Types and Uses
Posted by alibabarika in Business News on December 1, 2010
Construction and mechanical hardware essentially includes all the construction tools and mechanical accessories that are involved in various construction engineering applications. Besides knowing about all the mechanical and construction hardware products like transmission chains, bearings and couplings it is also important to have an idea about their applications and use. In this article lets throw some light on an important aspect of construction hardware, that is anchor concrete fasteners.
To begin concrete fasteners are used to join wood and metal to concrete. A variety of options of concrete fasteners that are designed for specific use are available. Following is the guide that will tell you all about the fasteners and will also extend help in making you find the perfect concrete fasteners for your next home improvement.
How to Properly Prepare For Successful Concrete Floor Coating Installation
Posted by alibabarika in Business News on December 1, 2010
One of the critical elements for achieving ideal results with a concrete floor coating is proper preparation of the concrete surface. This may sound elementary, but it’s surprising how many flooring contractors don’t actually follow the protocols that optimize results and customer satisfaction.
It’s not just the preparation phase that makes a difference. There are fine points all along the way that make a huge difference in the outcome. The following steps should be followed for optimal results:
1. Determine Floor Type – Not all concrete floors are the same. Is the existing concrete soft, medium or hard? Understanding what’s already there is the foundational step for everything that follows.
2. Select the Right Grinding Methodology – The two main approaches are: Shot Blasting – Most contractors use shot blasting because it’s the cheaper way to go. However shot blasting is often too aggressive an approach, and is usually more appropriate for resurfacing rather than for applying a thin film. Shot blasting is downright abusive to concrete and can create stress fractures in the floor. No matter how carefully it’s done, it also creates pits and valleys, high spots and low spots. When it comes to coatings such as urethane and epoxy, diamond grinding is usually the better approach. Diamond Grinding is a preferred prep method for a variety of reasons. Many contractors don’t it because it requires more time, money and skill. But the most important part is getting the coating to bond to the underlying floor, and diamond grinding is the best way to thoroughly open the pores of the concrete throughout the floor without damaging or gouging the concrete. It also produces the smoothest most uniform finish, thereby producing the best and most long-lasting result. The precision tooling of a diamond grinder also allows a trained technician to select the exact proper cutter for a specific floor, again minimizing damage or gouging to the underlying concrete.
3. Hand Grind All Edges – Most contractors don’t bother with this detail. They figure their industrial grinders get “close enough.” But without hand grinding the final few inches all the way to the walls, there’s no assurance that the coating will properly bind to the concrete at the edges… and that can mean a shoddy result.
4. Thorough Cleaning – Once the grinding is complete, the floor must be meticulously swept and vacuumed – all the way to the edges — so that no residue remains that could interfere with complete bonding.
5. Coat- Apply the first layer of the coating, such as an epoxy primer specifically formulated for penetrating and bonding to the concrete. Usually 3-5 mls in thickness.
6. Second Layer – Apply the build coat of the epoxy, usually 8-10 mls in thickness.
7. Sanding – For optimal bonding, both a chemical bond and a mechanical bond are ideal. This is why Liquid Floor Systems chooses to sand this epoxy layer, though not everyone bothers with this additional step. Is it absolutely necessary? Maybe not. Does it produce the best and most long lasting result? Absolutely!
8. Thoroughly Clean After Sanding
9. Apply Urethane Top Coat. The most important element of this final step is to roll on the urethane within the “recoat window “for complete bonding between the epoxy and the urethane. If each of these steps is performed by experienced concrete floor coating professionals, an epoxy floor with a urethane seal is one of the most attractive, long-lasting and cost effective concrete floor coating options available.
Information For Concrete Solutions For Infrastructure
Posted by alibabarika in Business News on December 1, 2010
Concrete Solutions for Infrastructure has been around for some time. Concrete is a material that has been used within roads, bridges, as well as many other things. As the amount of transportation increases, so does the need for the kinds of products that are capable of holding up. Therefore, better technologies are needed in order to keep up with the amount of traffic on the roads.
As technology continues to evolve, so does the kind of concrete available. Now, there are more choices available when it comes to choosing different kinds of concrete solutions. This tends to make things such as repairs one that is easier than once before. In the past there has been many difficulties due to the way that the concrete has not set as fast as needed.