28.B.27 Landing and placing loads.
- During the construction period, the employer placing a load on steel joists must ensure that the load is distributed so as not to exceed the carrying capacity of any steel joist.
Figure 28-3 (Continued)
Figure 28-3 (Continued)
- Except for paragraph d below, no construction loads are allowed on the steel joists until all bridging is installed and anchored and all joist-bearing ends are attached.
- The weight of a bundle of joist bridging must not exceed a total of 1,000 lbs (454 kg). A bundle of joist bridging must be placed on a minimum of three steel joists that are secured at one end. The edge of the bridging bundle must be positioned within 1 ft (0.3 m) of the secured end.
- No bundle of decking may be placed on steel joists until all bridging has been installed and anchored and all joist bearing ends attached, unless all of the following conditions are met:
- (1) The employer has first determined from a QP and documented in a site-specific Steel Erection Plan that the structure or portion of the structure is capable of supporting the load,
- (2) The bundle of decking is placed on a minimum of three steel joists,
- (3) The joists supporting the bundle of decking are attached at both ends,
- (4) At least one row of bridging is installed and anchored,
- (5) The total weight of the bundle of decking does not exceed 4,000 lbs (1816 kg), and the edge of the construction load must be placed within 1 ft (0.3 m) of the bearing surface of the joist end.
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28-8. What is the minimum number of properly secured steel joists upon which a bundle of joist bridging may be placed?
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