Issue link: http://palletcentral.uberflip.com/i/522141
palletcentral.com PalletCentral • May-June 2015 43 was configured to properly support the corners of the boxes. The bottom deck was configured to minimize the pressure of the bottom of the pallet applied to the top of the boxes when stacked more than one high. Pallet Specifications: 48x36 in. Stringer-class, partial 4-way, reusable, new manufacture Lumber: Top deck: Eight boards, 5 1/2 in. wide lead boards and 3 1/2 in interior boards, 9/16 in. thick Bottom Deck: Five boards, 5 1/2 in. wide lead boards, two 5 1/2 in. and one 3 1/2 in. interior boards, 9/16 in. thick Stringers: Three stringers, 3 1/2 in. high, 1 in. thick Species: 50/50 mix of High Density Hardwoods (Species Class 1) and Medium Density Hardwoods (Species Class 3), standard grade and better, green moisture content Load Information: Uniformly distributed flexible load, full pallet coverage (1 in. offset from pallet end) Max load for racked across the length (44 in. span): 1920 lbs. Max load for racked across the width (36 in span): 1943 lbs. Forklift support (42 in. long fork tines): 2786 lbs. Max load carrying capacity for stacked 1 high: 6265 lbs. Max load carrying capacity for stacked 3 high: 3213 lbs. It would appear that the pallet was under-designed for the racking conditions. On the other hand, Custom Load Specifications (boxes for Custom Load Type and column stacked for Stacking Pattern with stretch wrap) can be used within the General Load Type Specification. This stipulation increases the predicted maximum load carrying capacity for several support conditions: Max load for racked across the length (44 in. span): 2073 lbs. Max load for racked across the width (36 in span): 2098 lbs. Forklift support (42 in. long fork tines): 3009 lbs. Max load carrying capacity for stacked 1 high: 6515 lbs. Max load carrying capacity for stacked 3 high: 3341 lbs. If you would like to see another topic covered in the Pallet Design System™ section of PalletCentral magazine, please send your request to NWPCA Technical and PDS Manager, Brad Gething (bgething@palletcentral.com). PC