Helical piles were used to support a retaining wall, ramp, egress stair well foundation and slab at the company’s operations and maintenance facility.
Project Summary:
- Helical Pile Type: IDEAL 3 1/2″ .300 (Sch.80) Round Shaft
- Location: Tisbury, MA
- Installation Depth: 70′
- Helix Plates/Ultimate Pile Capacity: 10”-12”-14” 10,000 ft. lbs torque. 70 Kips Ultimate
- Equipment Used: Excavator with Pro Dig Drive Head
- Challenge/Unique Aspect: The borings indicated sand overlaying a low blow-count organic layer followed by higher “N” value sand at 75 feet where bearing was ultimately achieved. The helicals had to muscle through the upper, hard layer to reach a suitable bearing stratum.
- Danbro Installer: Coastal Marine Construction
- Engineer/Architect: Gencorelli Engineering – Pile Design. Architect- Saltonstall Architects
- Foth Infrastructure & Environmental – Structural
- General Contractor: Coastal Marine Construction
