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A=COM • Where effective banding and shrink wrapping can be achieved, the ratio of height to base can be safely increased to 4 to 1. • Stable construction of the stack is entirely dependent upon the following factors: o Safe relation of height to dimension of base; o Sound interlocking of the material; o Contents of the cartons; o Shape of articles 4.3.6 Post maximum safe loads for all floors above grade in pounds per square foot. 4.3.7 As applicable, stack, rack, block, interlock, band or shrink-wrap, or otherwise secure all materials to be stored in tiers to prevent sliding,falling, or collapse. 4.3.8 De-stacking is largely the reverse process of stacking. Most accidents involving the collapse of stacked materials occur during de-stacking. The prime cause of this is haphazard removal. All stacking and de-stacking should be carried out under competent supervision. Basic rules for breaking down stacks are: • One person should be responsible for the manner in which the stack is reduced; • The stack should be taken down tier by tier and; • As there is a high tripping hazard in the working area of a stack,tidiness and systematic work methods are essential. 4.3.9 Keep aisles, passageways, and other access ways clear to provide for the free and safe movement of material-handling equipment or employees. Mark all permanent aisles. 4.3.10 Segregate and label non-compatible materials. Refer to S3AM-117-PR1 Hazardous Materials Communication. 4.3.11 When loads swing freely, confirm non-compatible materials are segregated. Do not lift loads or swing over the heads of persons; it is not permitted to walk under a load. Wear hardhats in these areas. 4.3.12 Do not place material stored inside buildings under construction within 6 feet(1.8 meters)of any hoistway or inside floor openings, or within 10 feet(3 meters)of any exterior wall lower than the top of the material stored. 4.3.13 Pallets should be of sound construction, and be of adequate strength for the loads and conditions under which they are used. Where pallet loads are stacked tier on tier,the unit loads must be able to support the weight above. 4.3.14 Stacks, shelving and other fixtures for holding or storing materials should be so laid out and designed that there is sufficient access for safe loading and unloading by either manual or mechanical means 4.4 Stacking Frames 4.4.1 Conduct a visual inspection of the stacking frames prior to loading for damage(e.g., bent,twisted, broken or excessive rust). Remove from service any stacking frames that fall into any of these categories. 4.4.2 Several pallets can be loaded on a stacking frame provided they are stable and will not fall. 4.4.3 If more than one(1)pallet is placed on a stacking frame and materials are unstable or appear to be capable of falling,the pallets will be shrink-wrapped or banded together or stored in another storage location. Material Storage(S3AM-316-PR1) Revision 2 July 31,2019 PRINTED COPIES ARE UNCONTROLLED. CONTROLLED COPY IS AVAILABLE ON COMPANY INTRANET. Page 2 of 4