Tread Grip Safety Grating Specifications
Notes to architect
- Tread Grip is intended for general purpose use in plants and process facilities by industry, commerce, and public facilities, for both mobile and stationary equipment.
- Tread Grip stair treads are intended for utility stairs and fire escapes in commercial, public and private buildings where local code permits.
- These specifications are presented as a general guide to the architect or structural engineer in preparing project specifications.
- Allowable loads, spans and other limiting conditions presented in this catalog offer product data for use in design and construction.
- All supports should provide a smooth, level, 1 1/2” minimum bearing surface, free of burrs, bridging, welds or other irregularities.
- Random cut ends and diagonal or circular cut exposed edges should be banded with a bar at least 1 /8” thick and equal to the overall side channel depth of grating welded at contact points at the discretion of the design engineer.
- Bolted connections, except stair or ladder tread attachment to stringer channels, may be replaced by welded connections that develop the same strength.
Part 1: General
- Scope: The contractor shall furnish and install Tread Grip as specified and shown on the drawings.
- Qualifications: Tread Grip sheets, planks, ladder rungs, stair treads and accessories, unless otherwise indicated, shall be manufactured by
B-Line, and shall be installed in accordance with its current printed directions. Safety surface shall be slip-resistant in all directions.
- Submittals: The contractor shall furnish shop drawings of grating layout, framing and supports, unit dimensions and sections, type and
location of fasteners and welds.
- Storage and Handling: All materials shall be stored and handled to avoid damage. Damaged materials shall be removed from the premises
Part 2: Products
2.1 Flooring Materials
a. Type: Tread Grip Flooring
b. Metal and Finish: (carbon steel — hot rolled, pickled and oiled, ASTM A1011) (aluminum, alloy 5052-H32)
c. Metal gauge: (14-ga. HRPO steel) (13-ga. HRPO steel) (12-ga. HRPO steel) (11-ga. HRPO steel) (16-ga. HRPO steel)
(14-ga. stainless steel) ( .125” aluminum)
d. Sheet Size: (36” x 120”)
2.2 Plank Grating
a. Type: Tread Grip Plank
b. Metal Gauge and Type: (11 and 13 gauge carbon steel — hot rolled, pickled and oiled, ASTM A1011) (11 and 13 gauge mill-galvanized steel — ASTM A924), (.125” aluminum, alloy 5052-H32)
2.3 Ladder Rungs
a. Type: Tread Grip Ladder Rungs
b. Metal Gauge and Type: (13 gauge mill-galvanized steel, ASTM A924) (13 gauge carbon steel — hot rolled, pickled and oiled, ASTM A1011) (.125” aluminum, alloy 5052-H32) (14 gauge stainless steel, alloy Types 304-2B/D)
c. Width: (11/4”) (15/8”) (21/4”)
d. Length: (48”) (60”)
Part 3: Execution
3.1 Condition of surfaces
Prior to Tread Grip installation, contractor shall inspect supports for correct size, layout and alignment and verify thats urfaces
to receive grating are free of debris. The contractor shall report to the design or consulting engineer or ownesr’ agent in writing any
defects considered detrimental to proper application of tread grip so defects can be remedied before grating is applied.
3.2 Tread Grip installation
Install TREAD GRIP in accordance with manufacturer’s recommendations and shop drawings. Sheet goods by their nature are
intended to cover surface only. They require adequate support and hold down. Position tread grip planks flat and square with
ends bearing min. 11/2” on supporting structure. Keep tread grip sections at least 1/4” away from vertical steel sections and 1/2”
from concrete walls. Installation clearances are built into this product. Allow clearance at joints between sections of max1. /4” at side
channels and max. 3/8” at ends. When specified, band random cut ends and diagonal or circular cut exposed edges with a min.
1/8” thick bar welded at contact points.
3.3 Stair Tread Installation
Install Tread Grip stair treads as shown on the drawings. Fasten treads to stair stringers with 3/8” x 1” machine bolts and nuts.
a. For stair treads, intermediate stringer is recommended for spans over 4 feet.