Tempo:
(2 in. nominal) thick if supported at 600 mm (24 in.) centres. Common widths are 89 and 140 mm (4 and 6 in.). Low-level decks must be built so that the bottoms of the deck joists are at least 150 mm (6 in.) above the ground to prevent moisture being transferred to the decking from grass or ground cover. Wood materials should be pressure treated or made from durable species like eastern or western cedar.
All deck planks should be oriented so that the ends of the annual rings on the ends of the planks face down. Thus, any cupping that takes place will drain rather than puddle. Provide a 3 mm (1⁄8 in.) space between the deck planks to permit drainage and drying. Because decks, balconies, verandas and similar platforms support people, they are considered to be parts of buildings. Usually, pier-type columns are used to support decks.
175 Wood deck detail Guards Height of deck ≤ 600 mm (2 ft.) > 600 mm (2 ft.) ≤ 1,800 mm (5 ft. 11 in.) > 1 800 mm (5 ft. -11 in.)
100 mm (4 in.) maximum opening
Guard height guard not required 900 mm (36 in.) 1 070 mm (42 in.)
guard height
handrail (or cap) baluster post slope away from building decking overhangs rim joist 1" joists
height of deck
beam post bolted to joists post bolted through block between joists to rim joist angle bracket 140 x 140 mm (6 x 6 in.) post
200 mm (8 in.) above grade depth of foundation
post saddle concrete pier supported by rock, drained granular material or below the frost line for decks > 600 mm (2 ft.) above ground or with more than 3 risers
All deck planks should be oriented so that the ends of the annual rings on the ends of the planks face down. Thus, any cupping that takes place will drain rather than puddle. Provide a 3 mm (1⁄8 in.) space between the deck planks to permit drainage and drying. Because decks, balconies, verandas and similar platforms support people, they are considered to be parts of buildings. Usually, pier-type columns are used to support decks.
175 Wood deck detail Guards Height of deck ≤ 600 mm (2 ft.) > 600 mm (2 ft.) ≤ 1,800 mm (5 ft. 11 in.) > 1 800 mm (5 ft. -11 in.)
100 mm (4 in.) maximum opening
Guard height guard not required 900 mm (36 in.) 1 070 mm (42 in.)
guard height
handrail (or cap) baluster post slope away from building decking overhangs rim joist 1" joists
height of deck
beam post bolted to joists post bolted through block between joists to rim joist angle bracket 140 x 140 mm (6 x 6 in.) post
200 mm (8 in.) above grade depth of foundation
post saddle concrete pier supported by rock, drained granular material or below the frost line for decks > 600 mm (2 ft.) above ground or with more than 3 risers
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