UpCodes logo
Go To Full Code Chapter
17.2.3.1*
Powder-driven studs, welding studs, and the tools used for installing these devices shall be listed.
17.2.3.2
Pipe size, installation position, and construction material into which they are installed shall be in accordance with individual listings.
17.2.3.3
Increaser couplings shall be attached directly to the powder-driven studs or welding studs.
17.2.3.4
Welding studs or other hanger parts shall not be attached by welding to steel less than U.S. Standard, 12 gauge (2.8 mm).
17.2.3.5 Minimum Bolt or Rod Size for Steel
17.2.3.5.1
The size of a bolt or rod used with a hanger and installed through steel shall not be less than specified in Table 17.2.3.5.1.
Table 17.2.3.5.1 Minimum Bolt or Rod Size for Steel
Pipe Size Size of Bolt or Rod
in. mm in. mm
Up to and including 4 100 3/8 10
5 125 1/2 13
6 150
8 200
10 250 5/8 15
12 300 3/4 20
17.2.3.5.2
Holes for bolts or rods shall not exceed 1/16 in. (1.6 mm) greater than the diameter of the bolt or rod.
17.2.3.5.3
Bolts and rods shall be provided with flat washers and nuts.

Related Code Sections

9.1.4.2 Hanging, Bracing, and Restraint of System Piping,
Pipe size, installation position, and construction material into which they are installed shall be in accordance with individual listings ...