BOWED WALL STABILIZATION

The bowed wall straps offered by SRS are a 6” wide, 600 gsm unidirectional carbon fiber that is bonded with a specially designed epoxy to maximize adhesion and saturation of the carbon fiber to the concrete or masonry substrates.  The products are offered in roll kits that are able to be dispensed and cut to the appropriate lengths for every application. This minimizes waste and provides flexibility to handle virtually any project. The epoxy is mixed at a 2:1 ratio and is available in two different formats 33 oz cartridges and three-gallon bulk kits.

 

While the SRS-600UNI composite strap exhibits a design tensile strength over 40,000 lbs, these straps are more than capable of resisting the soil pressures that are exhibited on most basement foundation walls. The question becomes, can the wall support itself between the straps. This is something the contractor will need to evaluate on a case by case basis. If the walls are constructed properly with all of the design elements required by the building code in place, the strength of the wall should not be an issue and the goal of the repair becomes to resist the external forces in order to stabilize the wall.

In the case of the above mentioned project, the 7.5’ tall 8” cmu wall exhibited over a 4x safety factor when spaced a 4’ centers and calculated against the assumed soil pressure of 60 psf.  There were quite a bit of utilities located on the one wall which is the reason CFRP was recommend for the repairs. The straps can be slid in behind the utilities and any major relocations can be avoided.  

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Bowed Wall Stabilization Document

Block or CMU walls fail for a number of reasons from lack of reinforcing steel to excessive loads due to expansive soils or excess ground water. Even with the appropriate amounts of reinforcing steel in place, where the walls are constructed properly, expansive clay soils can still cause bowing if the cores are not fully grouted. The solution is Carbon Fiber Composite Straps that permanently secure and stabilize the basement wall against any further inward movement. The industrial strength adhesive epoxy penetrates deep into the pores of the concrete, while saturating the carbon fiber providing a permanent bond to the foundation.

600 Gram Unidirectional Carbon Fiber 

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The SRS-600UNI composite straps exhibits a design tensile strength of over 40,000 lbs to permanently stop inward movement related to the external soil pressure.

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While the SRS-600UNI composite strap exhibits a design tensile strength over 40,000 lbs, these straps are more than capable of resisting the soil pressures that are exhibited on most basement foundation walls. The question becomes, can the wall support itself between the straps. This is something the contractor will need to evaluate on a case by case basis.

Bowed Wall Strengthening.HEIC

If the walls are constructed properly with all of the design elements required by the building code in place, the strength of the wall should not be an issue and the goal of the repair becomes to resist the external forces in order to stabilize the wall. In the case of the above mentioned project, the 7.5’ tall 8” cmu wall exhibited over a 4x safety factor when spaced a 4’ centers and calculated against the assumed soil pressure of 60 psf. 

Bowed CMU Foundation Wall Stabilized wit
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Bowing Wall Stabilization Solution using
Bowed Wall Repair using CFRP with interi

ARRESTS STRUCTURE MOVEMENT  •  LESS THAN 1/8" THICK   •   LOW AESTHETIC IMPACT (CAN BE PAINTED)                   

• CONFORMS TO STRUCTURE  •  196,000 PSI TENSILE STRENGTH

SRS Bowed wall strengthening .JPG