BCAB #1381 - Seismic Design of Storage Racking, Sentences 126.96.36.199.(1), 188.8.131.52.(1) and 184.108.40.206.(15)
February 16, 1995
Re: Seismic Design of Storage Racking, Sentences 220.127.116.11.(1), 18.104.22.168.(1) and 22.214.171.124.(15)
This appeal concerns the structural design of storage racking systems used in warehouse and retail occupancies. The storage racking systems in question are assembled from factory made components into multi-level shelves and platforms which are supported from the building's floor slab independent of the building's superstructure. Access to the items on the shelves is by way of ladders or movable lifts, not stairs and walkways.
Reason for Appeal
Part 4 requires buildings to be designed to resist seismic loads due to earthquakes. Subsection 4.1.9. provides the method for analysis of earthquake motion due to specified loads.
The appellant contends that storage racking systems which are self-supporting and independent of the building's superstructure are not required to be designed to resist seismic loads.
Building Official's Position
The building official maintains that either the storage racking system must be designed to resist seismic loads or the building must be designed to resist seismic loads imparted by the storage racking system.
Appeal Board Decision #1381
The Board feels this appeal should be withdrawn and direction given to the Building Standards Branch to resolve this issue through a Code revision.
George R. Humphrey, Chair