LOAD
HEIGHT
BRACING
Wind load only
Up to 10 feet
One row at mid-height
Over 10 feet
Rows 5'-0" o.c. maximum
Axial load
Up to 10 feet
Two rows at 1/3 points
Over 10 feet
Rows 3'-4" o.c. maximum
3.2.3
Joists and Trusses
Locate each joist or truss directly above a stud. Provide doubled joists
under parallel partitions wherever partition length exceeds 1/2 of joist
span. Joists shall have at least 60 mm 2.50 inches of bearing on steel, 100
mm 4 inches on masonry, and shall be reinforced over bearings where
required to prevent web crippling. Splice joists over bearings only. Lap
and weld splices as indicated. Provide manufacturer's standard bridging
which shall not be less than the following:
CLEAR SPAN
Up to 4200
mm
One row near center
4200 mm to
6000 mm
Two rows at 1/3 points
6000 mm to
7800 mm
Three rows at 1/4 points
7800 mm to
10600 mm
Four rows at 1/5 points
CLEAR SPAN
Up
to
14
feet
One row near center
14
to
20
feet
Two rows at 1/3 points
20
to
26
feet
Three rows at 1/4 points
26
to
32
feet
Four rows at 1/5 points
Temporary bracing shall be provided and remain in place until work is
permanently stabilized.
3.2.4
Erection Tolerances
a.
wallboard, plaster, or ceramic tile set in a mortar setting bed,
shall be within the following limits:
(1) Layout of walls and partitions:
6 mm 1/4 inch from intended
position;
(2) Plates and runners:
6 mm in 2400 mm 1/4 inch in 8 feet from
a straight line;
(3) Studs: 6 mm in 2400 mm 1/4 inch in 8 feet out of plumb, not
cumulative; and
(4) Face of framing members:
6 mm in 2400 mm 1/4 inch in 8 feet
from a true plane.
b.
Framing members which will be covered by ceramic tile set in
dry-set mortar, latex-portland cement mortar, or organic adhesive
shall be within the following limits:
(1)
Layout of walls and partitions:
6 mm 1/4 inch from intended
SECTION 05400
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