Wall Tie
A rigid metal strip with a plate on one end which attaches racking which is prone to over-turning to a concrete wall unit. Before adding wall ties to a system, an engineer should be consulted.Wedge Anchor
A special, removable bolt used to fasten uprights to the floor.Weed Wacker Holder
A square tube with a bracket on one end that attaches over the beam. The opposite end of the tube has a bent wire piece which can cradle a weed eater for display.
Weld
The application of heat and gases to fuse two pieces of metal together.
Whiz Bolt
(whiz nut) A bolt or nut with a serrated flat section that grips the surface it is being attached to.Wind Load
Added force on a rack system caused by wind.
Wire Decking
Grids of wire welded together that rest on the steps of the beams to form a shelf.
Wood Decking
(stickers) Wooden boards which rest on a pair of beams and form a shelf.
Wood Spacer Strips
(sticker spacers) A metal band with relief areas for wood to nest into for separation of wooden decking. Spaces stickers so that water can flow through in the event of fire.Yield
The point at which a piece of steel is stretched and will not return to its original size. The point at which an overloaded component will take a permanent set.
Zinc
Metallic coating applied to racking components to add weather resistance. (galvanizing)
Zones
(seismic, earthquake zones) A reference to certain areas of the country with different seismic activity.
ex. Zone 1 – Least amount of seismic activity Zone 4: Greatest amount of seismic activity