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TWIG® SIA: Class 1 NYC Special Inspection Agency
TWIG® Special Inspections Agency (TWIG® SIA), offers Special Inspection services as per the new NYC Construction Codes where Special Inspections have now replaced Controlled Inspections f or all construction projects currently filed with the New York City Department of Buildings.
To enhance the safety and integrity of construction processes, effective July 1, 2009, every construction project in the NYC, approved under the 2014 New York City Building Code, must be inspected and tested by approved Special Inspection Agencies, with qualifications set to consistent standards and firm requirements.
Special Inspections are similar in scope to Controlled Inspections, with a number of additions, and they are defined in Chapter 17 of the 2014 Building Code and the Department's Special Inspections Rule. Special Inspection Agencies must be independently accredited by the International Accreditation Service (IAS), or an equivalent agency accrediting to ASTM E329-07 international standard, and must be hired directly by the building owner rather than the contractor.
NYC Special Inspections
General Building Construction
General Building Construction
General Building Construction
- Chimneys per BC 1704.26
- Luminous Egress Path Markings per BC 1704.30 | BC 1024.8
- Excavation - Sheeting, Shoring and Bracing per BC 170420.2
- Seismic Isolation Systems per BC 1707.8
- Flood Zone Compliance per BC 1704.29
- Soil Percolation Test Individual On-Site Private Sewage Disposal Septic per BC 1704.22
- Masonry BC 1704.5
- Wood - Installation of High-Load Diaphragms BC 1704.6.1
- Wood - Installation of Metal-Plate-Connected Trusses BC 1704.6.2
- Wood - Installation of Prefabricated I-Joists BC 1704.6.3
- Subgrade Insp / Soils-Site Prep BC 1704.7.1
- Wall Panels, Curtain Walls, and Veneers BC 1704.10
Fire Protection
General Building Construction
General Building Construction
- Smoke Control Systems per BC 1704.15
- Sprinkler Systems per BC 1704.23
- Standpipe Systems per BC 1704.24
- Emergency & Standby Power Systems per BC 1704.13 | BC 2702
- Fire Resistant Penetrations and Joints (Firestop) per BC 1704.27
- Spray Fire-Resistant Materials per BC 1704.11
- Mastic and Intumescent Fire-Resistant Coatings per BC 1704.1
Plumbing and Mechanical
General Building Construction
Plumbing and Mechanical
- Mechanical Systems per BC 1704.16
- Fuel-Oil Storage and Fuel-Oil Piping Systems per BC 1704.17
- Heating Systems BC 1704.25
- High-Pressure Steam Piping (Welding) BC 1704.18
- Fuel Gas Piping (Welding) BC 1704.19
- EmergencyStandby Power Systems per BC 1704.13 | 2702
- On-Site Storm Water Drain Disposal/Detention Install Drywell per BC 1704.21.2
- Mechnaical Demolition per BC 1704.20.4
Civil
NYC Energy Conservation
Plumbing and Mechanical
- Underpinning per BC 1704.20.3 | BC 1814
Structural
NYC Energy Conservation
NYC Energy Conservation
- Post Installed Anchors per BC 1704.32
- Exterior Insulation and Finish Systems (EIFS) BC 1704.13
- Structural Stability - Existing Buildings BC 1704.20.1
NYC Energy Conservation
NYC Energy Conservation
NYC Energy Conservation
All NYC construction projects that require DOB permits - regardless of size and percentage renovation - now must comply with the NYC Energy Conservation Code (NYCECC) and submit special inspection form TR8.
- Progress Inspections - Energy Code Compliance Inspections BC 109.3.5