CAD-Architecture Inst: Mr. Johnston Logan High School Decks CAD-Architecture Inst: Mr. Johnston Logan High School

Goal: Students will become familiar with the different types of decks and framing methods associated with them.

Composite Decks composite made from fine, dry oak sawdust from post- industrial sources extruded into a variety of shapes including solids, hollows, and asymmetrical shapes for railings, posts, planks, stair treads, fascia, and risers. about $5 per square foot

Treated Wood Wolmanized wood to resist these wood- destroying elements. The preservative is fixed in the wood, you can use Wolmanized wood safely in virtually all your outdoor projects, from a picnic table to playground equipment

Western Red Cedar Is one of the few woods with its own preservative oils, its freedom from pitch and resin makes it an excellent base for protective coatings. It is the most stable of British Columbia's softwoods, so Western Red Cedar decks stay flat and straight and resist checking.

Western Red Cedar Western Red Cedar decks are firm but resilient underfoot, not hard and unyielding. The wood is light weight, easily worked and ideal for almost all types of finishes. It has an elegance that complements any architectural style and a beauty that blends into all landscapes.

Building Tips Before you begin nailing, lay out your lumber with the best- looking face exposed. Decide which pieces you want for visible areas, and which pieces for understructure. Separate deck boards as follows to allow for expansion and contraction. If heavy and wet, separate boards no more than 1/16" as some shrinkage will occur. If light and dry, separate boards no more than 1/8".

Notice spaces between deck lumber.

Building Tips Avoid long spans in construction. Use enough nails. Skimping doesn't pay. Nails and other hardware should be hot-dipped zinc- coated or equally well protected material. If a board is bowed, install it with the crown up.

Coating and Sealing Wait six months before applying paint. Water repellent coating is not needed for two years and then should be reapplied only every two years.

Footings

Raising the Posts Note Drift Pins

Installing Beams

Install Joists

Installing Deck Boards

References: http://www.buildinggreen.com/products/smartdeck.html http://www.wolmanizedwood.com/building.html http://www.deckorators.com/ http://www.hometime.com/projects/howto/deck/pc2dk07.htm