MODULAR HELICAL PIER FOUNDATION SUPPORT SYSTEMS, ASSEMBLIES AND METHODS WITH SNAP-LOCK COUPLINGS

摘要

Improved couplers for a building foundation support system include helical ribs and helical grooves in combination with an integrated spring retainer element that automatically snaps into place as the couplers are engaged. Rotational and axial interlocking attachment of support piles is therefore possible without utilizing separately provided fasteners such as bolts.