1.800.3ELMERS • 231.943.3443 3600 Rennie School Rd. • P.O. Box 6150 • Traverse City, MI 49696-6150 www.TeamElmers.com This boathouse was constructed with 12 inch concrete walls, with stone exterior. Twenty eight helical piers were installed using 1¾” square shaft material. The loads were 36 kips working per point. With 2:1 safety factor they were installed to 72 kips. Depths for the piers ranged from 36 to 54 feet. The soils were decent, but stil

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