Tempo:
(Figure 62). All manufacturers provide technical information that describes these requirements, and their directions must be followed.
may be acceptable. Conversely, if floor depth is not a limitation, deeper joists at 600 mm (24 in.) spacing may prove more economical.
Where a sill plate is used, joists are installed after the sill plates have been levelled, caulked and anchored to the foundation wall. The joists are located and spaced according to the design.
A joist with a bow edgewise should be placed with the crown on top—it will tend to straighten when the subfloor and floor loads are applied.
Joist spacing of 400 mm (16 in.) on centre is the most common. For heavy loads or when floor depth is limited, joists spaced 300 mm (12 in.)
A rim joist is end-nailed or toe-nailed to each joist. The joists, including the end joist parallel to the exterior walls, are toe-nailed to the sill plate (Figure 63). The inner portions of the joists
62 Load transfer requirements for wood I-joists Rim framing transfers exterior wall loads around the I-joists to the wall below Blocking transfers point loads and interior wall loads around I-joists to the wall or beam below Squash blocks are used to transfer point loads from columns or framing around doors and windows from one floor to the next without loading the I-joists. Web stiffeners may be required if the load on the joist exceeds the design capacity of the joist without web stiffeners.
63 Floor framing panel joint over joist joist under partitions parallel to joists joists lapped over beam blocking floor joists toenailed to sill plate
anchored sill plate joists parallel to foundation
cross-bridging continuous wood strapping sub floor nailed or screwed to joists (field-gluing will improve floor performance)
rim joist end nailed to joist rim joist toenailed to sill plate
may be acceptable. Conversely, if floor depth is not a limitation, deeper joists at 600 mm (24 in.) spacing may prove more economical.
Where a sill plate is used, joists are installed after the sill plates have been levelled, caulked and anchored to the foundation wall. The joists are located and spaced according to the design.
A joist with a bow edgewise should be placed with the crown on top—it will tend to straighten when the subfloor and floor loads are applied.
Joist spacing of 400 mm (16 in.) on centre is the most common. For heavy loads or when floor depth is limited, joists spaced 300 mm (12 in.)
A rim joist is end-nailed or toe-nailed to each joist. The joists, including the end joist parallel to the exterior walls, are toe-nailed to the sill plate (Figure 63). The inner portions of the joists
62 Load transfer requirements for wood I-joists Rim framing transfers exterior wall loads around the I-joists to the wall below Blocking transfers point loads and interior wall loads around I-joists to the wall or beam below Squash blocks are used to transfer point loads from columns or framing around doors and windows from one floor to the next without loading the I-joists. Web stiffeners may be required if the load on the joist exceeds the design capacity of the joist without web stiffeners.
63 Floor framing panel joint over joist joist under partitions parallel to joists joists lapped over beam blocking floor joists toenailed to sill plate
anchored sill plate joists parallel to foundation
cross-bridging continuous wood strapping sub floor nailed or screwed to joists (field-gluing will improve floor performance)
rim joist end nailed to joist rim joist toenailed to sill plate
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