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Bar Grating Stair Tread

  • Detail of standard end plate
     

  • Grating Depth Dimension B Dimension C
    3/4 (19) to 1-1/4 (32) 1-3/4 (44) 2-1/2 (64)
    1-1/2 (38) and up 2-1/4 (57) 3(76)

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Detail of standard end plate

Tread Width Number of Bearing Bars "A" Dimension
6-3/16" 157mm 5 2-1/2" 64mm
7-3/8" 187mm 6 4-1/2" 114mm
8-9/16" 217mm 7 4-1/2" 114mm
9-3/4" 248mm 8 7" & 4-1/2" 178mm
10-15/16" 278mm 9 7" & 4-1/2" 178mm
12-1/8" 308mm 10 7" & 4-1/2" 178mm

  • Steel Bar Grating Stair Tread

    * All weights will increase by 5% when galvanized.

  • Recommended bearing bar sizes
    Bearing Bar Size Maximum Length of Tread @ 1-3/16" (30mm)
    Plain Serrated
    Imperial
    1" x 3/16" 3'-5" 2'-10"
    1-1/4" x 3/16" 4'-6" 4'-2"
    1-1/2" x 3/16" 5'-6" 5'-3"
    Metric
    25 x 4.8 1046 860
    32 x 4.8 1420 1270
    38 x 4.8 1670 1600

  • Aluminum Bar Grating Stair Tread


  • Recommended bearing bar sizes
    Bearing Bar Size Maximum Length of Tread @ 1-3/16" (30mm)
    Plain Serrated
    Imperial
    1" x 3/16" 2'-4" Not Recomended
    1-1/4" x 3/16" 2'-10" 2'-7"
    1-1/2" x 3/16" 3'-6" 3'-2"
    Metric
    25 x 4.8 710 Not Recomended
    32 x 4.8 860 790
    38 x 4.8 1070 970