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Terminology Explained

Decking Guide Illustration

GLOSSARY OF TERMS: 

Actual Dimensions - The exact measurements of a piece of lumber.

Attached Deck - A deck with one or more sides supported by a ledger and attached to a house  

Baluster - One of a series of vertical supports used between posts of a railing

Beam - A horizontal support member on which joists rest

Block Plane - A plane used to finish off edges of a deck

Bottom Rail - A rail attached to the bottom of the balusters

Bracing - Structural supports that provide stability to the structure

Bridging Boards - Placed perpendicularly between joists to stiffen them

Buglehead Screw - A screw that doesn't tear the wood when screwed down flush with the surface

Cantilever - The allowable overhang past the joists  

Cap Rail - The top horizontal piece of a railing

Carriage Bolt - A bolt used to hold structural pieces together

Conduit Metal - Pipes used to contain electrical wiring in outdoor settings

Decking Boards - Used for the surface of a deck

Elevated Deck - A deck requiring a structure of beams and posts to raise it off the ground to the desired level

Fascia Board - The boards used to cover the fronting of the joists

Footing - The support of a deck's post that is below ground

Freestanding Platform Deck - A deck supported entirely by its own structure, typically used for remote decks

Grade-Level Deck - A deck that is flush with the ground level

Inset - Part of the deck that has been cut out to for landscape elements such as trees

Joist - Horizontal framing pieces that support decking

Ledger - A board that is horizontally attached to the side of a house and holds up one edge of a deck

Line Load - The weight a deck is designed to support

Linear Feet - The total length of required lumber

Load Area - The area found by multiplying the beam spacing by the post spacing to determine the post thickness required by building codes

Multilevel Deck - A deck that has several areas at different levels

Post - The vertical structural that supports the beam

Post Anchor - A metal piece that keeps the post from being exposed to moisture in the ground

Post Cap - A small piece of wood attached to the top of the post to cover it

Pressure Treated Wood - Wood subjected to a high-pressure treatment of chemicals as a preservative against rot and insects

Rail Post - A vertical structural support for the railing

Remote Deck - A freestanding platform located away from the house

Rim Joist - A board fastened to the end of the joists

Rise - The distance in height between one stair tread to another

Riser - The up right piece between two stair steps

Run - The distance in length from one stair riser to another

Shade Structure - A structure built above a deck that provides a shaded area

Skirt - A decorative board placed around the bottom of the deck to hide the support structure

Span - The distance between supports

Top Plate - Attaches to the Top Rail to support it

Top Rail - The horizontal rail installed on the edge of the deck

Tread - The surface of each step in a staircase 

Deck Boards - Patterned designs such as Herringbone, Chequerboard, Parallel or Chevron will require purchasing up to a further 10% to account for cutting down of the deck boards.