ISI provides a full range of Special Inspection Services — that is, monitoring of materials and workmanship critical to the integrity of the building structure — in order to ensure compliance with approved plans, specifications and relevant building codes and ordinances.

The special inspection process is required in accordance with the California Building Code (CBC), Chapter 17 for most construction projects and for the CBC Title 24 Chapter 17A for OSHPD and DSA projects. These special inspections are in addition to inspections conducted by the jurisdiction.

  • Grading Observations
  • Density Testing (Nuclear Gauge/Sand Cone)
  • Source Inspection/Material Sampling

  • Concrete Placement and Sampling
  • Batch Plant Inspection
  • Reinforcing Steel Placement Inspection

  • Concrete Placement and Sampling
  • Reinforcing Steel and Tendon Inspection
  • Tendon Stressing Observations

  • Concrete Placement and Sampling
  • Reinforcing Steel and Tendon Placement Inspection
  • Tendon Stressing Observations

  • Spray-Applied Fireproofing
  • Intumescent Fireproofing
  • Substrate Inspection
  • Application Inspection
  • Thickness Verification
  • Adhesion/Cohesion Testing

  • Substrate Inspection
  • Installation Inspection
    • Pre-Production Panel/Nozzleman Qualification
    • Reinforcing Steel Placement Inspection
    • Shotcrete Placement Inspection

  • CMU and Veneer Placement and Sampling
  • Reinforcing Steel Placement Inspection
  • Grout Placement Inspection
  • Source Material Sampling
  • Material Identification
  • Shop Fabrication Welding Inspection
  • Field Welding Inspection
  • Nondestructive Testing (UT, MT, PT, RT)
  • High Strength Bolting Inspection

  • Material Verification
  • Shear Wall Nailing Inspection
  • Floor Diaphragm Nailing Inspection
  • Installation Inspection
  • Torque/Proofload Testing