Instrument

Schedule 8 List of Roof Truss Information

Sets out the information related to roof trusses that must be provided with a development application for approval.

Documents

Current

Historic

No historic versions available

About this document

The following information must be provided with an application for building rules consent for building work that involves the installation, alteration, relocation or removal and reinstatement of roof trusses.

A structural design report that includes:

  • the name of the software program or standards used
  • truss spacing
  • top and bottom chord restraint spacing
  • overhang, eaves type and fascia type
  • roofing and ceiling type.
  • roof pitch
  • the inputs and discretionary parameters used in the design, for example:
    • importance level for building type
    • wind load and internal pressure coefficient
    • special loads or conditions considered, such as:
      • water tank
      • air-conditioner
      • solar system
      • corrosion
      • attached structures

Drawings showing:

  • roof frame layout plan showing truss locations, spans, station for truncated girder truss
  • layout plans of wall framing and floor framing
  • girder truss locations, boot details and lateral restraint
  • top chord bracing details – layout and fixing
  • top chord restraint – spacing, fixing and splicing, intermediate ties for valley truss
  • bottom chord restraint – spacing, size and bracing, direct fix
  • tie down details and location
  • overhang details – eave supported or non-supported, structural or non-structural fascia
  • hip end framing and connection details
  • gable end truss – supported or free spanning
  • bearing widths (70 mm minimum)
  • details including truss to truss connections, web bracing, non-load bearing braced wall connections, internal supports or tie downs, laminations
  • special loads such as solar heating, air-conditioning, hot water service or attached structures
  • concentrated or critical load paths to support framing (including girder trusses) and internal load bearing walls or supports.

Details showing:

  • Trusses:
    • elevation of each truss showing dimensions, member layout, connections, support points (at panel points), web bracing (including details), lamination details, critical design information
    • details indicating support points (correlating with framing layout plans)
    • girder truss – imposed loads are detailed and accounted for
    • loads and connections from conventional roof have been accounted for and certified by structural engineer
    • details to show that the existing structure is adequate to support new roof
  • Hybrid roof and additions:
    • loads and connections from conventional roof have been accounted for and certified by structural engineer
    • details to show that the existing structure is adequate to support new roof.

The Minister’s Schedule 8 List of Roof Truss Information is determined for the purposes of section 119(1)(c) of the Planning, Development and Infrastructure Act 2016 and Schedule 8 Clause 4(7) of the Planning, Development and Infrastructure (General) Regulations 2017.