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Bar Grating
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Steel & Stainless Steel Bar Grating Stair Treads

Welded

•Maximum Tread Lengths
•End Plate Dimensions
•Tread Width Including Nosing
•Weight Table Per Inch of Tread Length

 

Maximum Tread Lengths

19W4/19P4/19S4
19SW4/19SP4/19SS4
1-3/16" Center to Center of Bearing Bars
Bearing Bar Size Plain Serrated

3/4" x 3/16"

2'-4"

1'-11"

1" x 3/16"

3'-5"

2'-10"

1-1/4" x 3/16"

4'-8"

4'-2"

1-1/2" x 3/16"

5'-6"

5'-3"

*Maximum tread length based on 300 lb. concentrated load on front 5 in. of tread at center of tread length and deflection limitation of 1/240 length.

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End Plate Dimensions

19W4/19P4/19S4
19SW4/19SP4/19SS4
1-3/16" Center to Center of Bearing Bars
Grating Depth Up to 1-1/4" 1-1/2" to 1-3/4"

Dimension "B"

1-3/4"

2-1/4"

Dimension "C"

2-1/2"

3"

Dimension "A":  See Tread Width

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Tread Width Including Nosing

19W4/19P4/19S4
19SW4/19SP4/19SS4
1-3/16" Center to Center of Bearing Bars

No. of Bearing Bars

 Bearing Bar Depth

Bolt Hole Spacing
Dimension "A"
1/8" 3/16"

Tread Width

5

6-1/8"

6-3/16"

2-1/2"
6

7-5/16"

7-3/8"

4-1/2"
7

8-1/2"

8-9/16"

4-1/2"
8

9-11/16"

9-3/4"

7"
9

10-7/8"

10-15/16"

7"
10

12-1/6"

12-1/8"

7"

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Weight Table per Inch of Tread Length

19W4/19P4/19S4
19SW4/19SP4/19SS4
1-3/16" Center to Center of Bearing Bars

No. of Bearing Bars

Nosing*

3/4" x 3/16"

1" x 3/16"

1-1/4" x 3/16"

1-1/2" x 3/16"
5

CP/SN

 .31 .36 .41 .48
CA .41 .46 .51 .56
6 CP/SN .36 .43 .49 .55
CA .46 .53 .59 .65
7 CP/SN .41 .50 .57 .64
CA .51 .59 .67 .74
8 CP/SN .46 .56 .65 .73
CA .56 .66 .75 .83
9 CP/SN .52 .63 .73 .83
CA .62 .73 .83 .93
10 CP/SN .58 .70 .81 .92
CA .68 .80 .90 1.02

*CP/SN = Checker Plate Nosing, Slip-Not Nosing; CA = Cast Iron/Aluminum Abrasive Nosing

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