Post Tensioned Mat Foundation Repair

Once the concrete has gained strength to 2000 psi typically within the 3 to 10 days recommended by pti the tendons are stressed.

Post tensioned mat foundation repair.

A post tension slab is a concrete slab or foundation that contains high tension cables running through the concrete to increase strength and reduce cracking typically in areas with poor soil conditions. We had a lot of questions way back when about vinyl siding post tension slabs the new types of foundation repair like the perma pile system. Apart from certain technical considerations this may be due to some conservatism inherent in foundation engineering. For the repair and modification of post tensioning pt systems as well as post tensioned concrete structure repair and protection structural technologies offers highly specialized products and services including investigation repair design support repair and replacement components corrosion protection products strengthening solutions as well as new or replacement post tensioning systems.

Difficult soil conditions for post tensioned slab. The large spacing of the tendons allows plenty of room for the workers to place the concrete without standing on the reinforcement and pushing it into the dirt. Slab foundation repair cost can be expensive and may even cause collateral damage with extra costs as well. At granite we perform slab foundation repairs as well as pier and beam foundation repairs.

A residential post tensioned concrete slab will typically be 8 inches thick and use 3000 psi concrete. The first edition of the post tensioning manual was published in 1972 and as of the time of this writing 2018 they are up to their 6th edition. Post tensioned concrete in building construction post tensioned foundations 1. Introduction while the use of prestressing in superstructures is well established foundations have only rarely been prestressed.

A concrete slab foundation problem needs prompt evaluation and. You can go back in the history of this show and it s developed quite differently today but no post tension slabs they re cheap they re used in production building they do it to keep. Post tensioning is a method of reinforcing strengthening concrete or other materials with high strength steel strands or bars typically referred to as tendons. In general it s more expensive to build a post tensioned slab on grade foundation than a traditional one.

Having all the facts before you begin repairs will help you choose the right company and avoid unexpected cost and delays. The post tensioning institute designed post tensioned foundations. The reason behind the extra expense is that the foundation must be more substantial. When a post tensioned foundation is used on stable soils maintaining the 50 psi minimum is the only additional calculation from a conventional reinforced foundation.

Our future vision pti envisions a future in which post tensioning is the first choice for reinforcing all structures.