Underpinning with Helical Piers
Location: Ladue, MO
Job Type: Foundation Piering
As the result of the excavation involved to construct the addition and the code clearance requirements involved, Helitech constructed a temporary shotcrete wall to retain the vertical cut. Sheet piling was not an option, due to the impact it would have induced upon the residence, and timber/lag retention system was not an economical solution.
Helitech installed (10) ten A.B. Chance Helical Piers to support the North & West foundation walls. Helitech then transferred loads of the structure to the piers, which reduced surcharge loading of the soil. Piers were installed to 30-50 Kip capacities and consisted of an 8-10-12 in. diameter helix configuration. Piers reached load capacities at 20-30 ft. depths.