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![]() Minimizes and Controls Cracking: Post-tensioning will reduce cracking and keep any cracks that might form tight, preventing entry of insects and reducing possible water penetration, which can damage flooring and cause mold problems.Stronger/more efficient: Less concrete and steel are needed for the same structural capacity and the slab stiffness is increased so that the slab is better able to resist bending caused by differential soil movements.Advantages of using post-tensioning for your next slab-on-ground project: Reducing the control joints also improves the serviceability and eliminates durability problems. Post-tensioned foundations are also used in areas with stable soils to reduce cracking, reduce or eliminate control joints, increase flexural capacity and improve constructability. This is a substantial benefit in sandy soils where trenches require shoring. With the elimination of stiffening ribs, a post-tensioned foundation can be constructed rapidly eliminating labor and equipment to dig the ribs and dispose of excavations. Typical thickness ranges from 7.5- to 12-inches and any increases in material quantities are compensated by reductions in labor and equipment costs. In less expansive soils, a uniform thickness foundation is utilized. Cost benefits are achieved by reductions in quantities of concrete, steel and excavations, which in turn reduce labor costs. The compressive stresses resist the anticipated tension stresses induced by the soil movements, enhancing the performance over a non-prestressed foundation. Post-tensioned slabs-on-ground provide a cost-efficient, high-performance solution for problems associated with ground-supported residential foundations on shrink-swell soils. Level 1 & 2 Multistrand & Grouted PT Inspector.Level 1 & 2 Multistrand & Grouted PT Specialist.Level 1 & 2 Unbonded PT Installer & Inspector.
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