Permanent Steel Sheet Pile Wall – Providence RI
70 Calverly Street
Completion Date: 2004
Actual Project Value: $155,000
Relevant Project Features:
- Negotiated more reasonable/realistic design criteria, which resulted in a more economical wall design that saved time and money
- Prepared Engineering Submittals
- Prepared and stamped the City of Providence Project Certification
RT Group, Inc. (RTG) was retained by R.P. Iannuccillo and Sons Construction Company of Providence, Rhode Island to design a permanent steel sheet pile wall at the Clarkson Street Substation No. 13, which is owned by National Grid. The permanent sheet pile wall was installed adjacent to an existing slope to provide more useable “real estate” and allow the substation to be expanded.
The permanent steel sheet pile wall was about 200-feet-long, and the sheet piles ranged from about 20- to 35- feet-long. The exposed height of the wall ranged from about 5 to 10 feet, and a cantilever sheet pile wall design was utilized. The permanent wall was coated with epoxy paint on the front side and coal tar epoxy on the backside, and a clean well-graded granular material was utilized as backfill behind the wall. In addition, weep holes were installed along the length of the permanent wall to allow excess hydrostatic pressures to dissipate.
RTG prepared and stamped the engineering submittals associated with the construction of the permanent wall and prepared and stamped the City of Providence Project Certification at completion. RTG also assisted R.P. Iannuccillo and Sons Construction Company in negotiating more reasonable/realistic design criteria with National Grid, which resulted in a more economical wall design that saved time and money.
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