Table 45 — Bottom Plates Lower Storey | AS 1684.2 | Structopedia

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AS 1684.2 · Timber Framing

Table 45 — Bottom Plates (Lower Storey of Two Storey)

Selections

Wind

Grade

Lower Joist sp.

Upper FLW

Upper Joist sp.

Roof

Wind Classification

Timber Grade

Lower Floor Joist Spacing (mm)

Upper Floor Load Width (mm)

Upper Floor Joist Spacing (mm)

Roof Type

Maximum Roof Load Width (mm) Select all inputs above

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Figure 6.18(b) — Bottom Plates Lower Storey

Table 45 Notes

Maximum roof load widths are based on a maximum total sheet roof, framing and ceiling mass of 40 kg/m², tile roof 90 kg/m² and a maximum flooring mass of 40 kg/m². Refer to Appendix A for guidance.
Where the bottom plate is continuously supported by a concrete slab or solid nogging, or where wall studs are directly in line with floor joists, the bottom plate may be a minimum of 35 mm deep.
Where bottom plates support studs supporting concentrated loads, posts or jamb studs, the load shall be supported directly over a floor joist or over solid blocking between plate and bearer.
Plates may be trenched up to a maximum of 3 mm.
Multiple plates shall be nailed together as per Clause 2.5.

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Clause reference: AS 1684.2 Cl. 6.4.3 · Table 45