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How to Order Diamond Safety Grating

Catalog number code

The catalog number code given below will assist you in ordering the material according to the specifications required.

  1. Steel:
    First numeral is width. “5” denotes 5-diamond or 113/4” width.
    Second and third numerals denote channel size. “20” denotes 2”, “15” denotes 11/2”, etc.
    Last two numbers denote gauge. “12” denotes 12 gauge, “14” denotes 14 gauge.
    Standard material is mill galvanized G-90 (ASTM A653)
    Example: 52014 = 5-Diamond, 113/4” wide, 2” channel, 14 gauge
  1. Aluminum:
    First numeral is width. “5” denotes 5-diamond or 113/4” width.
    Second and third numerals denote channel size. “20” denotes 2”, “15” denotes 11/2”, etc.
    Last two numbers denote gauge. “10” denotes .100” thick, “12” denotes .080” thick.
    Material -A: Denotes aluminum.
    Example: 52012-A = 5-Diamond, 113/4” wide, 2” channel, .080 thick, aluminum
  1. Stainless Steel:
    First numeral is width. “5” denotes 5-diamond or 113/4” width.
    Second and third numerals denote channel size. “20” denotes 2”, “15” denotes 11/2”, etc.
    Last two numbers denote gauge. “16” denotes 16 gauge.
    Material – S = Type 304, SL = 316L
    Example: 52016-S = 5-Diamond, 113/4” wide, 2” channel, 16 gauge, Type 304 stainless
  1. Stair Treads:
    Any of the above numbers preceded by “T-”
    Example: T-42014 = 4-Diamond, 91/2” wide, 2” channel, 14 gauge, steel stair tread
  1. Plain:
    For ordering purposes, any catalog number followed by “B” signifies plain unpainted steel (HRP&O).
    Example: 52012-B = 5-Diamond, 113/4” wide, 2” channel, 12 gauge, plain steel
  1. Special Products:
    Consult local diamond safety grating distributor for identification and order placement of special products not herein identified.

Standard Sizes:
Length: (nominal 10’-0” and 12’-0”)

Tolerances:
Planks: Standard 10’-0” and 12’-0” lengths are 120” and 144” respectively, with a tolerance of -0” +1/4”.
Special lengths are available.
Treads: Standard stair tread lengths are as shown in this catalog with tolerances of ± 1/8”.

Raw Materials:
Finishes:
a. Steel:

  1. Pre-galvanized – ASTM A525
  2. 14 gauge: hot rolled, commercial quality, oiled black steel and commercial quality, commercial coating, chemically treated galvanized steel
  3. 12 gauge: hot rolled, pickled and oiled, commercial quality black steel and commercial quality, commercial coating, chemically treated galvanized steel

b. Aluminum: Alloy 5052 H-32 mill finish

c. Stainless Steel: 2B finish – 316L (light, cold rolled) — 2D finish – 304 (cold rolled)

Fabrication service: On large jobs, we estimate, quote, detail, and fabricate to your requirements. Lump-sum quotations are made from submitted plans and specifications. After receipt of order, a bill of materials and necessary layout drawings are prepared. Grating is supplied with special cutting, banding and toe plates installed where needed. Stair treads are also available fabricated and non-serrated.

Installation Recommendations

General Installation Recommendations

Recommended Clearance

Steel: 1/4” minimum is recommended at perimeter and 3/8” maximum at end joints. Maximum between panels is 1/4”; 1/8” is generally used.

Concrete: Concrete form deflection calls for slightly greater perimeter clearance. 1/2” is recommended.
(Maximum between panels is 1/4”).

Bearing Surfaces

Recommended minimum bearing 11/2”. Surfaces supporting diamond safety grating must be smooth and level to insure that adjoining sections provide a safe, even walking surface.

Permanent Installation

Diamond safety grating is easily welded to supports for permanent installations. Channels are quickly welded together between supports to provide uniform deflection in adjacent panels.

For welded-attachment, secure side channels to supports by fusion welding with 1/8” fillet welds, 1” long. Weld adjacent planks together with 1/8” fillet welds, 1” long, 24” on center staggered top and bottom.

Install diamond safety grating according to details as shown on individual job drawings, or as follows:

  1. Single width applications. Utilizing the anchoring device or weldings, attach diamond safety grating plank at every point of contact with supporting structure around perimeter of plank.
  2. Multiple width applications. Utilizing the diamond safety grating anchoring device or welded as recommended by A.I.S.I., attach grating plank around the perimeter at each point of contact with supporting structure. In field of platform, attach plank to supporting structure with a minimum of one attachment at each end of plank on alternate sides.

When span exceeds 8 feet, weld or bolt side channels of adjacent planks together at midpoint of span.
(When spans exceed 6 feet, consider similar treatment.)

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