Glossary

This term refers to the grating size that is compatable with the endplate selected. For example, a CP 420 Carrier Plate would be compatable with a Grip Strut_R 420 plank (4 diamond, 2" channel).

This refers to the part of the description of a Carrier Plate that identifies it's size and mounting hole placement. Some examples are CP420 and CP520.

To pass wire cloth through a pair of rollers to reduce thickness or flatten intersections of wires and provide a smooth surface. Also called rolled.

A slight bow which can occur during manufacturing and results in an out-of-square condition.

Fittings used to finish off the end of a rail or post

In handrail components, the height of the end cap as viewed in profile.

Components used to cap the ends of pipe or tube used as railing or posts

Sold in pairs and typically punched with a slot and a hole for mounting to stringers, these accessories are "U" shaped to fit into the channel of Plank Grating and used to fabricate stair treads.

The identifying number used in McNichol's catalogs.

The term Category represents the fourth level in McNICHOLS product hierarchy and allows for the grouping of similar items within a Class.

This characteristic helps describe the way pipe or tube bends at its centerline, and is expressed as the dimension of the radius of the curve.

This characteristic is used within the Product Line of Handrail Components. It identifies the distance from the wall to the centerline of the pipe or tube as it rests on the saddle of the handrail bracket.

A structural shape produced with two legs typically set at 90 degrees against a plate to form a channel.

This characteristic identifies the depth, in inches, of the side channel for Plank Grating items.

The depth of a channel, typically used in reference to the structural shape of Channel.

The width of a channel, typically used in reference to the structural shape of Channel.

The term class represents the third level in McNICHOLS product hierarchy and allows for the grouping of items within Product Types.

Cold Rolled Sheet and coil rated as Class 1 is intended for exposed applications where surface appearance is primary.

Cold Rolled Sheet and coil rated as Class 2 is mainly used for unexposed applications and can have more surface blemishes.

Clear span is the distance between the grating's supporting members measured from the inside point of one support to the inside point of the next support. Said a different way: clear span is the

section of the grating. Clear span is a critical factor in determing a grating’s load characteristics.

These accessories are used to attach primary products, typically Gratings, to a supporting structure.

Wire cloth with mesh count of less than 30x30.

Changing the structure and shape of steel by applying stress at low temperature.

The standard colors are gray, yellow or green. Other colors are available upon special request.

Steel with a carbon limit at 0.15 max. A Standard Quality Carbon Steel Sheet. The characteristics of commercial quality steel are defined by the American Society for Testing Materials (ASTM).

This is a brief description of the type of handrail component.

The individual items of a trench drain system that may be purchased separately outside of a kit.

Components used when two pieces of pipe or tube are connected together, either end to end or at an angle.

This characteristic identifies how the bearing bars in Bar Grating are attached to the Cross Bars - Welded, Press Locked, Locked by Swaging, Riveted or Clinched.

Identifies how wire mesh is constructed and identifies the type of weave for woven products.

The number of openings per linear inch, measured from the center of any wire.

Pultruded fiberglass grating is available in several colors that normally correspond to the specific type of resin system being used. Typical colors are gray or yellow.

This refers to the size of the cross bar used in items of Pultruded Fiberglass Grating. The size and type of cross bar may vary depending on the size, shape and spacing of the bearing bars.

Center to center cross bar spacing is the distance from the center of one cross bar to the center of next cross bar.

Pultruded fiberglass grating is available with a flush top cross bar in some of the grating series. In this case, the cross bars have a flat top surface that is normally finished to match the bearing bars, either with a smooth or grit surface.

There are a number of different types of cross bars  that are used in the manufacture of bar grating and pultruded fiberglass grating. These vary depending on the size and spacing of the grating as well as the method of manufacture. Some common types are round, rectangular and twisted square rod. 

The wires in wire cloth that run parallel to the width (i.e., the short side of the roll or sheet). opposite of line wire.