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.

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 —An 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.