Bar Grating
SURFACES：
SMOOTH SURFACES
Smooth surface steel grating is available in a wide variety of materials for man applications.
SERRATED SURFACES
Serrated surfaces are available on many types of grating. The serrated surface provide a safe, slip-resistant surface. These surfaces offer more secure footing where a variet of liquids such as oil, chemicals, or water are present.
Open Steel Grating
Conforms to Specifications RR-G-661b and MIL-G-18014.
Bearing bars and cross bars are joined by automatic forge-welding machines which control heat, pressure and electric current. Result: sturdy, one-piece grating with flush top surface. Welded grating is widely used for walkways, fire escapes, floors, decks, etc. Avail- able plain, painted, galvanized or vinyl coated, regular or with serrated edges, spiral-drawn or smooth round cross bars.
 
 
WEIGHT IN LBS. PER SQ. FT.
Bearing Bars |
Cross Bars |
Type 19-W-4 |
Type 19-W-2 |
Type 15-W-4 |
Type 15-W-2 |
3/4 x 1/8 |
1/4 |
3.99 |
4.63 |
4.95 |
5.59 |
3/4 x 316 |
1/4 |
5.67 |
6.31 |
7.11 |
7.75 |
1 x 1/8 |
1/4 |
5.15 |
5.79 |
6.44 |
7.08 |
1 x 3/16 |
1/4 |
7.35 |
7.99 |
9.27 |
9.91 |
1-1/4 x 1/8 |
1/4 |
6.20 |
6.84 |
7.79 |
8.43 |
1-1/4 x 3/16 |
1/4 |
9.03 |
9.67 |
11.43 |
12.07 |
1-1/2 x 1/8 |
1/4 |
7.35 |
7.99 |
9.27 |
9.91 |
1-1/2 x 3/16 |
5/16 |
10.94 |
11.80 |
13.82 |
14.68 |
1-3/4 x 3/16 |
5/16 |
12.62 |
13.48 |
15.98 |
16.84 |
2 x 3/16 |
5/16 |
14.30 |
15.16 |
18.14 |
19.00 |
2-1/4 x 3/16 |
5/16 |
15.87 |
16.74 |
20.16 |
21.03 |
BANDING BAR A flat bar welded to the end of a panel of grating. The bar is usually the same thickness and depth as the bearing bar.
BEARING BAR The main load carrying bar which runs the same direction as the span.
CIRCULAR CUT-BAND The circular cutting and banding of a panel to conform to a specific layout. Ex. grating going around a tank or pipe.
CROSS BARS The connecting bars made from steel strip or rolled bars which extend across the bearing bars, usually perpendicular to them. They are welded, forged or mechanically locked.
NOSING L-shaped section, usually made of checker plate or cast iron and aluminum abrasive material.
SERRATED GRATING Grating which has the top surfaces of the bearing bar notched, which provides non- skid footing.
SPAN The distance between points of grating support. Mostly direction of bearing bar.
STRAIGHT CUT The cutting of grating along a straight edge. Mostly figured when cutting around columns or posts.
TOE PLATE A flat bar attached flat against the outer edge of grating and projecting above the top surface of grating to form lip or curve. |
