1705.2 Steel construction.
BC § 1705.2
The special inspections of new installations and alterations to existing installations of steel elements in buildings and structures shall be as required by this section and Table 1705.2. Where required, special inspection of steel shall also comply with Section 1711. Exceptions: 1. Special inspection of the steel fabrication process shall not be required where the fabricator does not perform any welding, thermal cutting or heating operation of any kind as part of the fabrication process. In such cases, the fabricator shall be required to submit a detailed procedure for material control that demonstrates the fabricator's ability to maintain suitable records and procedures such that, at any time during the fabrication process, the material specification, grade and mill test reports for the main stress-carrying elements are capable of being determined.
2.When specified by the registered design professional, the special inspector shall have the option to perform periodic inspections during welding of the following items, provided the materials, welding procedures and qualifications of welders are verified prior to the start of the work; periodic inspections are made of the work in progress and a visual inspection of all welds is made prior to completion or prior to shipment of shop welding. 2.1. Single-pass fillet welds not exceeding 5/16 inch (7.9 mm) in size. 2.2. Floor and roof deck welding. 2.3. Welded studs when used for structural diaphragm. 2.4. Welded sheet steel for cold-formed steel members. 2.5. Welding of stairs and railing systems. 2.6. Welding of connections where the calculated connection strength is at least twice the required strength of the connection. Such connections shall be specifically indicated on the approved construction documents. Table 1705.2Required Special Inspection of Steel Construction TypeContinuousSpecial InspectionPeriodicSpecial InspectionReferenced Standard aBC ReferenceTypeContinuousSpecial InspectionPeriodicSpecial InspectionReferenced Standard aBC Reference1. Material verification of high-strength bolts, nuts and washers: a. Identification markings to conform to ASTM standards specified in the approved construction documents.—XAISC 360, Section A3.3; applicable ASTM material specifications; and RCSC Specification for Structural Joints Using High-Strength Bolts Section 2— b. Manufacturer's certificate of compliance required.—XRCSC Specification for Structural Joints Using High-Strength Bolts Section 2.1—2. Inspection of high-strength bolting: a. Snug-tight joints.—XAISC 360 Section M2.5; and RCSC Specification for Structural Joints Using High-Strength Bolts Section 91705.2.3 b. Pre-tensioned and slip-critical joints using turn-of-nut with matchmarking, twist-off bolt or direct tension indicator methods of installation.—X c. Pre-tensioned and slip-critical joints using turn-of-nut without matchmarking or calibrated wrench methods of installation.X— d. Pre-installation verification testing.X—3. Material verification of structural steel and cold formed steel deck: a. For structural steel, identification markings to conform to AISC 360.—XAISC 360 Sections A3.1, N2.1, N3.2 (a) and (k)(1)— b. For other steel, identification markings to conform to ASTM standards specified in the approved construction documents.——Applicable ASTM Standards— c. Manufacturers' certified mill test reports.—XApplicable ASTM material standards4. Material verification of weld filler materials: a. Identification markings to conform to AWS specification in the approved construction documents.——AISC 360 Section A3.5 and N3.2(e), and applicable AWS A5 documents; and AWS D1.1 5.3.1 and approved contract documents— b. Manufacturer's certificate of compliance required.——AISC 360 Section A3.5—5. Inspection of welding: a. Structural steel:———— 1) Complete and partial penetration groove welds.X—AWS D1.11705.2.1 2) Multipass fillet welds.X— 3) Single-pass fillet welds > 5/16".X— 4) Plug and slot welds.X— 5) Single-pass fillet welds ≤ 5/16".—X 6) Floor and roof deck welds.—XAWS D1.3— 7) Cold-formed steel welds.—XAWS D1.3— b. Reinforcing steel:——AWS D1.41903.6.2 1) Pre-welding verification of base metal.—X 2) Reinforcing steel-resisting flexural and axial forces in intermediate and special moment frames, and boundary elements of special reinforced concrete shear walls and shear reinforcement.X— 3) Shear reinforcement.XNote a— 4) Other reinforcing steel.—XNote b6. Inspection of steel frame joint details for compliance with approved construction documents: a. Details such as bracing and stiffening.—X—1705.2.2 b. Member locations.—X c. Application of joint details at each connection.—X For SI: 1 inch = 25.4 mm. a A minimum of 10% of shear studs shall be verified for strength of welded connection. If failure is evident on one or more, then the strength of all shear studs shall be verified. b. Welding of indirect and direct butt joints shall be continuously inspected. (Am. L.L. 2023/077, 6/11/2023, eff. 6/11/2023) Editor's note: For related unconsolidated provisions, see Appendix A at L.L. 2023/077.
