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Bar Grating
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Accessories		 Light Duty Carbon Aluminum Stair Treads Bar Grating
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Stock List Types/Construction Heavy Duty Carbon Stainless Steel Load Tables How To Order 

Aluminum Rectangular Bar Stair Treads

Swaged

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

 

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 length.

 

End Plate Dimensions

19AP4/19AS4/19AF4
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

 

Tread Width Including Nosing

19AP4/19AS4/19AF4
1-3/16" Center to Center of Bearing Bars

No. of Bearing Bars

 Bearing Bar Depth

Bolt Hole Spacing
Dimension "A"
3/16"

Tread Width

5

6-3/16"

2-1/2"
6

7-3/8"

4-1/2"
7

8-9/16"

4-1/2"
8

9-3/4"

7"
9

10-15/16"

7"
10

12-1/8"

7"

 

Weight Table per Inch of Tread Length

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/SN

 .13 .15 .18 .19
CA .17 .19 .21 .23
6

G/SN

 .16 .18 .21 .23
CA .19 .21 .24 .27
7

G/SN

 .18 .21 .24 .27
CA .22 .24 .28 .30
8

G/SN

 .21 .23 .28 .31
CA .24 .27 .31 .34
9

G/SN

 .23 .27 .31 .35
CA .26 .30 .34 .38
10

G/SN

 .25 .30 .35 .39
CA .29 .33 .38 .42

*G/SN = Grooved Nose; CA = Cast Iron/Aluminum Abrasive Nosing

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