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Steel

Structural

Description

  • Projects in this scope area may include repairing or replacing structural columns, beams, bearing walls, floor structures, and foundations. 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

Relevant Codes & Regulations

NYC Building Code — Structural
Design and construction requirements for structural concrete
ACI 318 — Building Code Requirements for Structural Concrete
National concrete design standard used by building codes
ASTM Standards (Concrete Materials & Testing)
Material specs and test methods for aggregates, cement, and concrete
OSHA — Concrete & Masonry Construction
Worker safety standards for placing and curing concrete

Strategies

Optimize Performance, Operation & Maintenance of Buildings, Systems & Assets

Optimize Performance, Operation & Maintenance of Buildings, Systems & Assets

Sustainability AgendaCommercial BathroomsCommunity CentersCommercial KitchensEntryways

Last Updated on January 10, 2026 at 8:43 am

Downloads and Data

Specifications

03 01 00 - Concrete Restoration

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03 01 00 - Maintenance of Concrete

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03 20 00 - Concrete Reinforcing

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03 24 00 - Synthetic Fiber Reinforcement

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03 30 00 - Cast-in-Place Concrete

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03 30 54 - Fiber Reinforced Cast-in-Place Concrete

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03 40 00 - Precast Concrete

03 60 00 - Grouting

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Typ Unit Price Assemblies

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Details

G-DT_Proposed Structural CAD Layer Standards

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S-DT_1.S-101_CRACK_AND_THROUGH_REPAIR

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S-DT_5. S-001.00_Conc Slab Spall repair

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S-DT_6. S-002.00_Concrete Repair-CRACK AND THROUGH

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S-DT_7. S-003.00_Concrete Beam Repair

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S-DT_8. S-004.00 Column Repair

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S-DT_Encased Beam

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S-DT_S-101 - Concrete Crack Repair

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S-DT_S-101_CONCRETE PAD DETAILS AND NOTES_NEW HVAC

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S-DT_S-101-Concrete Spall Repair

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S-DT_S-103

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S-DT_Typical Additional Splicing Detail (ie. couplers)

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S-DT_Typical Rebar Tension Lap Splice Lengths

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S-DT_Typical Small Opening (less than 1'-6'') Infill Details

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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

Optimize Performance, Operation & Maintenance of Buildings, Systems & Assets

Sustainability AgendaFlood Resilience

Last Updated on January 10, 2026 at 8:44 am

Downloads and Data

Specifications

03 20 00 - Concrete Reinforcing

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03 24 00 - Synthetic Fiber Reinforcement

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03 30 00 - Cast-in-Place Concrete

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03 30 54 - Fiber Reinforced Cast-in-Place Concrete

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03 60 00 - Grouting

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31 22 00 - Earth Moving, Excavation, Filing and Grading

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31 30 00 - Earthwork

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31 50 00 - Excavation

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Typ Unit Price Assemblies

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Details

G-DT_Proposed Structural CAD Layer Standards

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Description

  • Projects in this scope area may include repairing or replacing structural steel framing members; and installing new metal decking, base plates, shear stud connectors, and expansion joint plates. 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. 

Baseline

  • Dunnage for Rooftop HVAC
    • Rooftop units shall be anchored adequately to the dunnage as per the manufacturer’s literature.Dunnage shall adequately transfer all load to the roof without damaging it.Rooftop units shall be placed on the cast-in-place dunnage or prefabricated dunnage provided by the rooftop unit manufacturer.Dunnage shall not retain water.The height of the dunnage shall allow enough clearance for any maintenance if required. The location of the rooftop unit shall be per Mechanical discipline.Fence and/or guard rail around the rooftop units shall be provided per the latest NYC Building Code.
    • The Contractor shall submit dunnage drawings signed and sealed by a New York State Licensed Professional Engineer.

Stretch

  • Use recycled steel and/or steel from electric arc furnaces (EAFs) to the extent possible.

Relevant Codes & Regulations

NYC Building Code — Structural Steel
Requirements for steel framing, connections, and fireproofing
AISC — Steel Construction Manual
Design standards and detailing guidance for structural steel
NYC DOB — Structural Guidance / Bulletins
DOB interpretations relevant to steel construction and inspections
OSHA — Steel Erection (Subpart R)
Safety requirements for steel erection and fall protection

Strategies

Optimize Performance, Operation & Maintenance of Buildings, Systems & Assets

Optimize Performance, Operation & Maintenance of Buildings, Systems & Assets

Commercial BathroomsCommunity CentersCommercial KitchensEntryways

Last Updated on January 10, 2026 at 8:44 am

Downloads and Data

Specifications

05 12 00 - Structural Steel Framing

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Details

G-DT_Proposed Structural CAD Layer Standards

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S-DT_Encased Beam

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S-DT_POST BASE

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S-DT_StandDet_A505_Lint_Sill_Repl

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