IMPORTANT: UNBALANCED LOAD CALCULATIONS
HOW TO DETERMINE AN UNBALANCED LOAD SITUATION: • Multiply the weight on each shelf (lbs) by 1/2 the shelf depth (ins) • Note: Loads on base shelves do not apply • Add up the totals for each side (Ins / lbs) • Find the difference between the loads on each side IT IS IMPORTANT NOT TO EXCEED A DIFFERENCE OF 15,000 in / lb
FRONT LOADED SHELVES ARE NOT RECOMMENDED AS THEY WILL CONTRIBUTE TO A MORE SERIOUS UNBALANCED LOAD SITUATION WHICH MAY RESULT IN TIPPING OR COLLAPSE OF SHELVING.
EXAMPLE
A1 A2 A3
11” x 300 lb = 3,300 in-lb 11” x 400 lb = 4,400 in-lb 13” x 500 lb = 6,500 in-lb
A1
B1
300 lbs
300 lbs
11”
11”
SIDE A
= 14,200 in-lb
A2
B2
400 lbs
300 lbs
B1 B2 B3
12” x 300 lb = 3,600 in-lb 12” x 300 lb = 3,600 in-lb 14” x 300 lb = 4,200 in-lb
11”
11”
SIDE B
= 11,400 in-lb
A3
B3
500 lbs
300 lbs
SIDE A 14,200 in-lb SIDE B - 11,400 in-lb 14” x 300 lb = 2,800 in-lb
14”
13”
2,800 in-lb < 15,000 in-lb Now, the fixture is safely loaded
SIDE A
SIDE B
WALL SECTION UNBALANCED LOAD CALCULATION: The method used to calculate an unbalanced load scenario (inch / pounds) of a wall section is the same as the method shown above however you should consider the side without shelves as a load of zero.
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