Aluminum Grating, Stainless Steel Gratings, Fiberglass Grating

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GRATING 1. Description a. Aluminum: – ALUMINUM FLUSH TOP SGF Series – Aluminum Rectangular Bar SG Series – Aluminum I-Bar SGI Series – Aluminum Dove Tail ADT Series – Aluminum Riveted AR Series – Aluminum Plank Series b. Heavy Duty Steel – Heavy Duty Welded Steel W Series – Heavy Duty Welded Steel WH Series – Heavy Duty Riveted Steel R Series c. Light Duty Steel – Welded Carbon Steel W Series – Dove Tail Carbon Steel DT Series – Swaged Carbon Steel SGCS Series – Swaged Stainless Steel SGSS Series – Riveted Carbon Steel R Series 2. Size and Type (Bar grating): a. Bearing bar size b. Bearing bar spacing, center-to-center (face-to-face for riveted grating) c. Cross bar or rivet spacing, center-to-center 3. Surface a. Plain b. Serrated c. Striated (I-Bar) d. Slip Resistant Surface 4. Size and Punch/Pattern (Aluminum Plank grating): a. Plank size and type b. Unpunched c. Rectangular Punched – Upset Pattern (OGI) – Upset Pattern (WACO) – Plain Pattern d. Square Punched – Upset Pattern – Plain Pattern e. Round Punched – 13/16½ Diameter In-Line Pattern – 1½ Diameter Staggered Pattern 5. A drawing (if layout is complicated) showing: a. Area to be covered b. Span (direction of bearing bars) c. Method of support d. All critical dimensions e. Banding or toeplate 6. Type of Anchorage a. Grating clamp b. Plank clip c. Saddle clip d. Anchor block e. Countersunk land (aluminum only) f. Tack weld g. Z clip h. Plank lug	7. Finish: a. Aluminum: – Mill Finish – Cleaned & Etched – A-31 1/2 hour Clear Anodizing – A-41 1 hour Clear Anodizing b. Carbon Steel – Mill Finish – Manufacturer’s Standard Black Paint – Galvanized c. Stainless Steel – Mill Finish – Sandblast (used to help minimize the discoloration caused by welding Heavy Duty Stainless Steel grating) STAIR TREADS 1. Description: See Grating, Item 1 2. Size and Type (Bar grating): See Grating, Item 2 3. Surface: See Grating, Item 3 4. Size and Punch/Pattern (Aluminum Plank grating): a. See Grating, Item 4 b. Type “F” 5. Type of Nosing a. Checker plate – standard for carbon steel treads b. Cast aluminum – an abrasive nosing available on aluminum, carbon steel or stainless steel treads c. Grooved – an extruded nosing standard on aluminum treads d. Slip-Not – a special nose for aluminum or carbon steel treads by request 6. Dimensions a. Width of tread, including nosing b. Span (length of bearing bars) c. End plate dimensions “A” and “B” (see page 105) 7. Number of treads 8. Finish: See Grating, Item 7 ALUMINUM GRATING FRAMES 1. Frame Size (corresponds with grating size) 2. Description a. Stock lengths b. A detailed drawing or accurate measurements for fabricated frames 3. Supplementary anchor straps and spacing, if required 4. Finish a. Mill Finish b. Bituminous Paint 5. Nail holes and location, if required Note: Grating should always be held down by some positive means. See Anchoring Devices.

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