Technical Services

CTSI conducts New York City required special inspections for an array of construction projects in compliance with New York City Department of Buildings (NYC DOB) guidelines. We are a Class 3 Special Inspection agency while also providing some Class 2 services.

General Building Construction

Wall Panels, Curtains Walls, and Veneers (BC 1704.10)

Exterior Insulation and Finish Systems (BC 1704.13)

Chimneys (BC 1704.26)

Flood Zone Compliance (BC 1704.29)

Luminous Egress Path Markings (BC 1704.30)

Fire Protection Systems & Fire-Resistant Construction

Spray Fire Resistant Materials (BC 1704.11)

Mastic and Intumescent Fire-Resistant Coatings (BC 1704.12)

Smoke Controls System (BC 1704.15)

Sprinkler Systems (BC 1704.23)

Standpipe Systems (BC 1704.24)

Fire-Resistant Penetrations and Joints (BC 1704.27)

Emergency and Standby Power Systems (BC 1704.31)

Plumbing & Mechanical Systems

Mechanical Systems (BC 1704.16)

Fuel-Oil Storage and Fuel Oil Piping Systems (BC 1704.17)

Private On-Site Storm Water Disposal Systems and Detention Facilities (BC 1704.21)

Individual On-Site Private Sewage Disposal Systems Installation (BC 1704.22)

Heating Systems (BC 1704.25)

Structural Materials & Construction Operations

Structural Steel Welding (BC 1704.3.1)

High Pressure Steam Piping Welding (BC 1704.18)

High Temperature Hot Water Piping Welding (BC 1704.19)

High Pressure Gas Piping Welding (BC 1704.28)

Structural Steel Details (BC 1704.3.2)

Structural Steel High Strength Bolting (BC 1704.3.3)

Structural Cold Formed Steel (BC 1704.3.4)

Concrete Cast in Place & Precast (BC 1704.4)

Prestressed Concrete (BC 1704.4)

Masonry (BC 1704.5)

Wood Construction – Prefabricated Wood I-Joists, Metal Plate Connected Wood Trusses, and High Load Diaphragms (BC 1704.6)

Subsurface Conditions – Subgrade Inspection (BC 1704.7.1)

Subsurface Conditions – Fill Placement (BC 1704.7.2)

Subsurface Conditions – In Place Density (BC 1704.7.3)

Subsurface Investigations – Borings (BC 1704.7.4)

Subsurface Investigations – Test Pits (BC 1704.21.1.1)

Deep Foundations (BC 1704.8)

Vertical Masonry Foundations (BC 1704.9)

Underpinning (BC 1704.20.3)

Structural Stability – Existing Buildings (BC 1704.20.2)

Excavation – Sheeting, Shoring, and Bracing (BC 1704.19)

Seismic Isolation Systems (BC 1707.8)

Post Installed Anchors (BC 1704.32)

Compliance Assessments/ Special Project Management

Code Compliance Audits and Screening

Property Condition Assessment – Interior and Exterior

OSHA Compliance Survey and Assessment