Structural Stair Treads - Robertson Grating Products - Fiberglass Grating, Bar Grating, Plank Grating, Handrail fittings, Perforated Metal

Structural Stair Treads

American Safety Tread structural stair treads and platforms are in use daily throughout the United States. The anti-slip granules embedded in the walking surface create a positive traction system that lasts for the life of the stairway.

Several designs are self-supporting, requiring no risers or bracing. Other designs are installed with carrier angles and risers. The choices are many.

When a heavy duty commuter stairway or industrial stairway is the design project, structural castings by American Safety Tread will provide the safety required by OSHA.

LONGEST WEARING: Effective anti-slip protection is guaranteed for the life of the stairway.

IMPACT RESISTANT: The alloys used in the manufacture of these cast structural treads and platforms create highly impact-resistant treads to accommodate heavy interior and exterior use.

ANTI-SLIP SURFACE: Whether wet or dry these treads afford maximum protection against slipping hazards. The proper blend of abrasive granules embedded in the exposed walking surface assures secure traction under foot.

ECONOMICAL: Available in four metals, these cast structural treads and platforms are the most economical on the market. Our advanced manufacturing equipment and special American Safety Tread molding process assure the lowest cost per unit.

Choice of Metals
ALUMACAST		Corrosion resistant, maintenance-free aluminum alloy for exterior and interior use.
lFERACAST		Cast iron all purpose usage. Withstands heavy industrial punishment.
BRONZACAST		Rich bronze finish makes this an ideal choice when fine architectural effects must be achieved and maintained.
NICKELCAST		A combination of cast nickel and bronze designed to blend with stainlesss steel architecture.


Tread Width - - - (Holes in end lugs for 1/2" diameter bolts)
4"	1 3/8"	1 1/4"	1 3/8"
5"	1 1/2"	2"	1 1/2"
6"	1 1/2"	3"	1 1/2"
7"	1 3/4"	3 1/2"	1 3/4"
8"	2"	4"	2"
9"	2"	5"	2"
10"	2"	6"	2"
11"	2"	7"	2"
12"	2"	8"	2"

Recommended Thickness for Structural Threads
	To	To	To
Span	3'0"	4'0"	5'0"
Thickness	7/16"	1/2"	5/8"
Thickness is for foundry casting purposes and may not be adequate for structural strength.

Style 805

Style 806

Style 807

Style 817A

Style 800

Style 801

Style 802

Style 803

Style 804

Style 806A

Style 807A

Style 817