29 CFR 1926.250 - General requirements for storage.
(1) All materials stored in tiers shall be stacked, racked, blocked, interlocked, or otherwise secured to prevent sliding, falling or collapse.
(2) Maximum safe load limits of floors within buildings and structures, in pounds per square foot, shall be conspicuously posted in all storage areas, except for floor or slab on grade. Maximum safe loads shall not be exceeded.
(1) Material stored inside buildings under construction shall not be placed within 6 feet of any hoistway or inside floor openings, nor within 10 feet of an exterior wall which does not extend above the top of the material stored.
(2) Each employee required to work on stored material in silos, hoppers, tanks, and similar storage areas shall be equipped with personal fall arrest equipment meeting the requirements of subpart M of this part.
(3) Noncompatible materials shall be segregated in storage.
(4) Bagged materials shall be stacked by stepping back the layers and cross-keying the bags at least every 10 bags high.
(5) Materials shall not be stored on scaffolds or runways in excess of supplies needed for immediate operations.
(7) When masonry blocks are stacked higher than 6 feet, the stack shall be tapered back one-half block per tier above the 6-foot level.
(ii) Lumber shall be stacked on level and solidly supported sills.
(iii) Lumber shall be so stacked as to be stable and self-supporting.
(c)Housekeeping. Storage areas shall be kept free from accumulation of materials that constitute hazards from tripping, fire, explosion, or pest harborage. Vegetation control will be exercised when necessary.
(d)Dockboards (bridge plates).
(1) Portable and powered dockboards shall be strong enough to carry the load imposed on them.
(3) Handholds, or other effective means, shall be provided on portable dockboards to permit safe handling.
(4) Positive protection shall be provided to prevent railroad cars from being moved while dockboards or bridge plates are in position.