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 postindustrial 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 wooddestroying 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 bestlooking 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
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 zinccoated 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/sm
artdeck.html
• http://www.wolmanizedwood.com/building.
html
• http://www.deckorators.com/
• http://www.hometime.com/projects/howto/d
eck/pc2dk07.htm