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Chapter 6 Structural Steel

SICC-604.3 Erection. The SIER shall perform special inspections of anchor bolts, bolts, welding, connections, and details. Any observed discrepancies between the County approved construction documents and the SER approved structural steel fabrication and erection documents shall be brought to the immediate attention of the SER. All steel elements shall be inspected before they are covered by sprayed fire-resistant materials, or are otherwise concealed.

a. High strength bolts. Installation shall conform to the County approved construction documents, SER approved structural steel fabrication and erection documents, and the RCSC/AISC Specification for Structural Joints Using A325 or A490 Bolts.

In the event any bolt, nut, or washer is broken during normal installation (except bolts purposely over- torqued in order to draw the parts together), the SIER shall bring such failures to the immediate attention of the SER and CCBSD. The SIER shall observe the on-job-site proof load testing of any suspect bolt(s) per ASTM and AISC standards. Should the bolts fail load testing, they shall be rejected and the SER shall make recommendations in writing for remedial actions. All test results and recommendations shall be reported to CCBSD.

b. Welding. All welders and weld special inspectors shall be certified in accordance with AWS D1.1. Weld inspection shall be in conformance with NCSBC-1704.3.1 and NCSBC-Table 1704.3 Item 5.

c. Rigid or semi-rigid connections. When field welding of rigid or semi-rigid connections is required, or when bolted connections are required to meet a minimum pretension beyond snug tight, the SIER shall conduct special inspections of the connections.

d. Details: The SIER shall perform inspections of the steel frame to verify compliance with the details shown on the County approved construction documents and the SER approved fabrication and erection documents, such as bracing, stiffening, member locations, and proper application of joint details at each connection.


Upon completion of structural steel construction, including connections, the SIER shall submit a completion letter to CCBSD. THE SIER shall also indicate the date of completion on the final report of special inspections for structural steel construction.

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