Structural Rack Beam Capacities

STRUCTURAL RACK BEAM CAPACITIES

Structural Beam Profiles

C3 x 3.5 C3 x 4.1 C4 x 4.5 C4 x 5.4 C5 x 6.7 C6 x 8.2
W/O Tie W/ Tie W/O Tie W/ Tie W/O Tie W/ Tie W/O Tie W/ Tie W/O Tie W/ Tie W/O Tie W/ Tie
48″ 12,593 12,858 13,521 13,632 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000
60″ 9,602 10,470 10,364 11,100 15,246 16,000 16,000 16,000 16,000 16,000 16,000 16,000
72″ 7,577 8,680 8,231 9,057 10,801 14,074 12,917 15,132 16,000 16,000 16,000 16,000
84″ 6,106 6,502 6,683 6,777 9,046 11,900 10,263 12,802 15,379 16,000 16,000 16,000
90″ 5,402 5,716 5,954 5,954 7,865 11,028 9,005 11,868 13,351 16,000 16,000 16,000
96″ 4,777 5,068 5,276 5,276 6,904 10,263 7,908 11,048 11,676 16,000 15,871 16,000
102″ 4,258 4,527 4,709 4,709 6,112 9,486 7,003 9,947 10,300 15,580 13,941 16,000
108″ 3,821 4,070 4,231 4,231 5,541 8,493 6,246 8,903 9,155 14,577 12,344 16,000
114″ 3,450 3,680 3,824 3,824 4,893 7,650 5,607 8,015 8,192 13,678 11,008 16,000
120″ 3,132 3,345 3,473 3,473 4,417 6,928 5,062 7,255 7,373 12,867 9,877 16,000
126″ 2,856 3,054 3,169 3,169 4,007 6,304 4,592 6,598 6,671 12,133 8,912 16,000
132″ 2,616 2,800 2,903 2,903 3,652 5,760 4,185 6,026 6,064 11,163 8,081 16,000
138″ 2,406 2,577 2,669 2,669 3,342 5,285 3,830 5,525 5,536 10,222 7,359 16,000
144″ 2,220 2,379 2,463 2,463 3,070 4,865 3,517 5,084 5,072 9,395 6,729 14,619

  • All structural rack capacities are expressed in pounds per pair of beams. Only gravity loading and the RMI required impact have been considered.
  • All values are based on a uniformly distributed load (i.e. each beam carries 50% of the load) and assume proper installation and no beam damage rolex replica uk.
  • The deflection limit for all beams is the length divided by 180.
  • Structural Rack Beams that are longer than 108” require lateral ties. 
  • Values in the table are for the beam bending only.
  • Please consult Springfield , Engineering for any shelf load over 10,000 lbs.
  • Capacities include 12.5% impact for two pallets side by side. For a three-pallet-wide shelf, the values should be multiplied by 0.95. For one pallet per shelf, the values should be multiplied by 0.90.
  • Capacity chart is based on current RMI specifications.

UNARCO structural  rack designs conform to the latest Rack Manufacturers Institute (RMI) specifications and American Iron and Steel Institute (AISI) Cold Formed Steel Design Manual.