Foundations
Description
- Projects in this scope area may include repairing or replacing foundations; and installing new foundation walls including masonry block walls, mortar, waterproofing, drainage, and vents for exhaust and/or floodproofing. The full, detailed scope of work for this project including any additional work areas will be updated here after alignment with project stakeholders through scoping and design activities.
Stretch
- Minimize concrete, fill, and soil construction and demolition waste (C&D) from capital projects. See Construction Waste section under Waste Management. [SA]
- Provide structural reinforcement for the slab, foundations, and basement or cellar below the Design Flood Elevation (DFE). Review Flood Protection section in Flood Protection for alternatives. [FR]
- Dewatering
- Discharging into City sewers requires a Discharge Permit. If the discharge exceeds 10,000 gallons of groundwater per day into City sewers, prior approvals from the Bureau of Water and Sewer Operations and the Bureau of Wastewater Treatment are also required. Discharges to sanitary and combined sewers are subject to approval from the Bureau of Wastewater Treatment (see above Dewatering WQCA for Discharges Over 10,000 Gallons Per Day). Discharges to storm sewers must be approved by the New York State Department of Environmental Conservation prior to applying for a Discharge Permit from the Bureau of Customer Service.
- Where dewatering is performed to drawdown or control the level of the water table, the dewatering operation shall proceed in accordance with a site specific plan developed by a registered design professional. The dewatering plan must incorporate all the conditions and findings identified in the geotechnical report required by the 2022 NYC Building Code Section 1803.6, the evaluation analysis required by Section 1817, and the preconstruction survey required by Section 3309.4.3.
- A Self-Certification Form must be submitted to the Bureau of Customer Service if the discharge is 10,000 gallons of groundwater per day or less.
Relevant Codes & Regulations
NYC Building Code — Foundations & Soils
Requirements for geotechnical design and foundation construction
NYC DOB — Technical Bulletins
DOB guidance documents and interpretations relevant to foundations
ASTM Standards (Soils & Geotechnical Testing)
Test methods for soil classification, compaction, and bearing capacity
OSHA — Excavations (Subpart P)
Shoring, sloping, and trench safety requirements
Strategies
Optimize Performance, Operation & Maintenance of Buildings, Systems & Assets
Sustainability AgendaFlood Resilience
Last Updated on January 10, 2026 at 8:44 am
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