Type 4701 Ribbed Abrasive Stair Nosing - Steel Pan Stairs
|Type Number: ||4701 |
|Description: ||For steel pan or wood stairs. |
|Width: ||4" |
|Lip: ||1-3/8" |
|Thickness: ||1/4" |
|Anchor Options: ||Drilled for screws. |
Stair nosings shall be Type No._________ as manufactured by American Safety Tread Company, Pelham, Alabama 35124. Telephone 1-800-245-4881. The base shall consist of heat treated extruded aluminum alloy 6063-T6. The abrasive filler shall consist of a mixture of aluminum oxide and silicon carbide granules in an epoxy matrix locked into the extruded channels of the base. The abrasive ribs shall project a minimum of 1/16” above the extruded channels. Nosings shall terminate not more than 3″ from ends of steps for poured concrete stairs; for concrete filled steel pan stairs, nosings shall be full length of steps less 1/8″ clearance.