W- Shape

A hot rolled member with parallel flanges.

Wainscot

Wall material, used in the lower portion of a wall, that is different from the material in the rest of the wall. 

Walk Door

See “Personnel Door”.

Wall Covering

The exterior wall surface consisting of panels.

Web

That portion of a structural member between the flanges.

Web Stiffener

See “Stiffener”.

Wheel Base

Distance from center-to-center of outermost crane wheels.

Wheel Load

The vertical force without impact produced on a crane wheel bearing on a runway rail or suspended from a runway beam. Maximum wheel load occurs with the crane at rated capacity and the trolley positioned to provide maximum vertical force at one set of wheels.

Width

Dimension of the building measured parallel to the main framing from sidewall to sidewall (outside face of girt to outside face of girt).

Wind Bent

See “Portal Frame”.

Wind Column

A vertical member designed to withstand horizontal wind loads. 

Wind Load

The load caused by the wind from any horizontal direction.