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Brown-Campbell Company
Brown-Campbell Company
800-472-8464
Specialty Steel Manufacturer,
Fabricator & Distributor Since 1952
Product Information

Bar Grating Stair Treads

Steel & Stainless Steel - Tread Length Design Details

Steel & Stainless Steel - Tread Length Design Details

Welded

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 of length.

Weight Per Inch of Tread Length (lbs)
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/AC .31 .36 .41 .48
CA .41 .46 .51 .56
6 CP/AC .36 .43 .49 .55
CA .46 .53 .59 .65
7 CP/AC .41 .50 .57 .64
CA .51 .59 .67 .74
8 CP/AC .46 .56 .65 .73
CA .56 .66 .75 .83
9 CP/AC .52 .63 .73 .83
CA .62 .73 .83 .93
10 CP/AC .58 .70 .81 .92
CA .68 .80 .90 1.02

* CP/AC = Checker Plate/Abrasive Coated Nosing
* CA = Cast Aluminum Abrasive Nosing