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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

Aluminum Rectangular Bar - Tread Length Design Details

Aluminum Rectangular Bar - Tread Length Design Details

Swaged

Maximum Tread Lengths*
19AP4/19AS4/19AF4
1-3/16" Center to Center of Bearing Bars
Bearing
Bar Size
Plain Serrated
1” x 3/16” 2’-4” 2’-2””
1-1/4”x 3/16” 2’-10” 2’-7”
1-1/2” x 3/16” 3’-6” 3’-2”
1-3/4” x 3/16” 4’-3” 3’-10”

* 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)
19AP4/19AS4/19AF4
1-3/16" Center to Center of Bearing Bars
No. of
Bearing Bars
Nosing* 1” x 3/16” 1-1/4” x 3/16” 1-1/2” x 3/16” 1-3/4” x 3/16”
5 G/AC .13 .15 .18 .19
CA .17 .19 .21 .23
6 G/AC .16 .18 .21 .23
CA .19 .21 .24 .27
7 G/AC .18 .21 .24 .27
CA .22 .24 .28 .30
8 G/AC .21 .23 .28 .31
CA .24 .27 .31 .34
9 G/AC .23 .27 .31 .35
CA .26 .30 .34 .38
10 G/AC .25 .30 .35 .39
CA .29 .33 .38 .42

* G/AC = Grooved Nose/Abrasive Coated Nosing
* CA = Cast Aluminum Abrasive Nosing