NCC 2019 Volume Two
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Part 3.4.3 Timber framing

Part 3.4.3 Timber framing

Appropriate Performance Requirements

Appropriate Performance Requirements

Where an alternative timber framing design is proposed as a Performance Solution to that described in Part 3.4.3, that proposal must comply with—

  1. Performance RequirementP2.1.1; and
  2. the relevant Performance Requirements determined in accordance with A2.2(3) and A2.4(3) as applicable.

3.4.3.0

Performance RequirementP2.1.1 is satisfied for a timber frame if it is designed and constructed in accordance with the following, as appropriate:

(a)

Design of timber structures: AS 1720.1.

(b)

Design of nailplated timber roof trusses: AS 1720.5.

(c)

Residential timber-framed construction – non-cyclonic areas: AS 1684.2.

(d)

Residential timber-framed construction – cyclonic areas: AS 1684.3.

(e)

Residential timber-framed construction – non-cyclonic areas (simplified): AS 1684.4.

(f)

Installation of particleboard flooring: AS 1860.2.

State and Territory Variations

State and Territory Variations

State and Territory Variations

In Queensland after 3.4.3.0(f) insert Qld 3.4.3.0(g) as follows:

Qld 3.4.3.0(g) Timber Species

(g)
Timber Species

In addition to sub-clauses (a) to (f) above, timber used for structural purposes must be a species scheduled for the appropriate use in Schedules A, B or C of Book 2 of the December 2017 version of the "Queensland Government, Department of Agriculture, Fisheries and Forestry - Construction timbers in Queensland, Book 1 and Book 2: Properties and specifications for satisfactory performance of construction timbers in Queensland - Class 1 and 10 buildings (Houses, carports, garages, greenhouses and sheds)".

Explanatory information:

Explanatory information:
  1. Design requirements for other materials used in combination with timber framing, including the use of concrete floors, structural steel support beams, etc. are described in Part 3.0 — Structural provisions or Part 3.4.4 — Structural steel members.
  2. The weight of roof or ceiling insulation, particularly if additional ceiling insulation is used for compliance with the energy efficiency provisions, needs to be considered in the selection of plasterboard, plasterboard fixings and building framing.