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CAST TREADS, NOSINGS, AND THRESHOLDS
FOR PROTECTION AND LONG WEAR
Wooster quality cast treads, nosings
and thresholds contain an even distribution
of abrasive grit integrally cast into the surface
for anti-slip protection and long wear. Width
and length to order. Nosings that are set flush
generally should be 3" (76.2 mm), 4"
(101.6 mm)or 6" (152.4 mm) in width.
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FERROGRIT STRUCTURAL TREADS
STAIRMASTER LANDING TREADS |
ABRASIVE CASTINGS
SPECIFICATION:
Provide Alumogrit, Ferrogrit type ____, size _____, safety
treads/nosings as manufactured by Wooster
Products Inc. for interior and exterior stairs.
Abrasive shall be #20 virgin grain Aluminum
Oxide (AL2O3)
abrasive, integrally cast into the walking
surface to a minimum depth of
1/32 inch (.79 mm).
Safety nosings up to 6" (152.4 mm) deep
with cross-hatched surface being installed
into wet concrete shall have a feature strip
along the back edge.
Concealed type
anchors shall be slotted rivet type,
integrally cast into the body of the nosing
a minimum of 3/8" (9.53 mm).
(Not mushroom type.)
Cast metals used shall conform to the
following specification:
Alumogrit (Abrasive cast Aluminum):
No. 43 prime and secondary ingot;
low copper content; corrosion resistant.
Ferrogrit (abrasive cast iron):
Class 20 iron; high silicon; machinable,
hyper-euctectic.
Any holes or countersinks shall be machine-
made, cored holes or countersinks are not
acceptable. Screwheads shall not protrude
above tread surface.
All Metal types shall
have shot-blasted finish; Ferrogrit treads and
nosings to have one coat shop-black paint.
Cross hatching and fluting shall be 1/16 inch
(1.59 mm) deep minimum and shall be clean
and well defined; treads and nosings shall be
manufactured, packed and shipped so as to
arrive at the jobsite in good condition.
Nosings shall terminate not more than 4"
(101.6 mm) from ends of steps for poured
concrete stairs; for concrete filled pan stairs,
nosings shall be full length of steps less 1/8"
(3.05 mm) clearance.
NOTE: Safety nosings going into new poured
concrete or cement fill shall be installed before
"Initial Set" of the concrete or cement occurs.
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TYPE 950 LADDER TREAD
BACK BY POPULAR DEMAND
- Quick Installation
- Anti-Slip Protection
- Interior / Exterior Use
- Durable Cast Aluminum
- 2" wide X 18" long
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Click Cast Nosing Type For Approval Sheet
View Picture and Details for each Cast: Structural Product
View Picture and Details for each Cast: Thresholds Product
View Picture and Details for each Cast: Misc Product
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