Joists And Beams After
Determining Their Correct
If the floor joists are
supported by a built up wood beam with
supporting posts, or a load bearing wall; refer to the beam span and
joist span tables in the building code to determine the correct
size and spans of the beams and joists. See figure 21 for
joist and beam spans and dimensions. If the floor joists are to
cover a floor 8 metres (26.25 Feet) wide and 8 metres (26.25 Feet)
long, Pages 413 and 426 of the BC Building Code 1998 will give the
correct joist and beam span lengths. If a joist
on page 413, Table A-1, Maximum Span For Floor Joists; made out of
number 1 spruce, with a size of 38 by 235 mm, with strapping,
a joist spacing of 300 mm is chosen; the joist span would be
metres. Page 426, Table A-8, Maximum Spans For Built
Up Floor Beams Supporting Not More Than One Floor; will give the
span. If spruce select structural, with a beam size of 4 - 38
by 235 mm, supported length of 4.2 metres is chosen; the beam
span would be
4.10 metres. One post would be needed to support the beam half way
across the length of the floor.
Joist And Beam
Spans, And Bearing Dimensions
Floors: Fasten The Sill
Plate To The Foundation
Wall With Anchor Bolts.
Fasten Joists & Beams After Determining The Correct
Floors: Layout & Install The Floor Joists.
Floors: Frame Any Floor Openings.
Floors: Frame Any L Shaped Floor
Floors: Install Cross Bridging Or Blocking.
Floors: Apply A Plywood Panel Subfloor To The Floor
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images and text are copyright Ronald Hunter 2005 to 2011