A. Rebar is not intended to entirely prevent cracks from forming in concrete. However, rebar that is high quality and properly placed can reduce the amount of cracking as well as help control where cracks occur, thereby avoiding structural damage.
A. Rebar absorbs the stretching and bending forces that are destructive to concrete, and it redistributes weight and pressure. The grid patterns in rebar placement must be precisely calculated in order to maximize the strength of concrete.
A. Concrete does require reinforcement if is more than five inches thick and isintended to support heavy loads, including automobiles, heavy equipment and largenumbers of people.
A. All of the rebar we use is made of recycled material.
A. The raw material for rebar is sourced from discarded appliances, machinery and vehicles. This material is melted in an electric arc furnace that attains temperatures as high as 1,800 degrees Fahrenheit. The molten steel is forced through a series of extrusion casting units to create long, large-diameter billets. Through a rolling process, the billets are formed into bars of the desired diameters, which then are moved to cooling beds before being cut to specified lengths.
A. The epoxy coating reduces potential damage from moisture over time, making it 40 to 50 times more resistant to corrosion than standard black steel rebar.
A. No. Epoxy coating is applied to increase the corrosion resistance of rebar.Cutting, grinding or welding damages the epoxy corrosion-resistance coating,resulting in loss of protection against corrosion.
A. You bet. In fact, it’s at least 800 times as corrosion resistant as standard blacks teel. Stainless steel rebar is considerably more expensive to manufacture than black steel, and it is specified for extremely harsh conditions subject to corrosive chlorides, including marine facilities and roads that are salted to inhibit icing.
A. After we learn the specifications of your job, we will help you make thatdetermination as part of our estimating process. In brief, here are the criteria for thevarious imperial bar sizes, in compliance with the standards that the AmericanConcrete Institute (ACI) and American Society for Testing and Materials (ASTM)have established.
• No. 3 (0.375 inch): appropriate for patios, driveways, light-traffic roads andpoured concrete swimming pools
• No. 4 (0.5 inch): for highways, columns and slabs
• No. 5 (0.625 inch): for highways and bridges
• No. 6 (0.75 inch): used in retaining walls, foundations, roads and highways
• No. 7 (0.875 inch): for bridges and multi-story parking garages
• No. 8 (1.0 inch): for beams, columns and slabs
• No. 9 (1.128 inch): for high-rise construction projects and tall retaining walls
• No. 10 (1.270 inch): for beams and columns in projects intended to withstandheavy commercial use
• No. 11: (1.41 inch): for load-bearing structures
• No. 14 (1.693 inch): for parking structures, bridges, high-rise buildings andwharves
• No. 18 (2.257 inches): for large-footprint buildings and industrial facilities
A. The letters and symbols near the end of each bar identify the mill where the bar was manufactured, the bar size, the type of reinforcing steel and the bar’s tensile strength, indicated in pounds per square inch.