Victorian variations and additions to NCC 2025 released

VIC A2G2 variation relates to Performance Solutions and reflects the current NCC 2022 clause retaining the use of Expert Judgment and VIC variation (5) but amends the limitations and note at the end of the clause.

Limitations

Where compliance with B1P1(2) or H1P1(2) is proposed to be satisfied by a Performance Solution for materials included in B1D4(a) to (f) or clauses 2.2.4(d) and 2.2.4(g) to (k) of the ABCB Housing Provisions, the Performance Solution must be— 

(a) achieved by demonstrating the solution is at least equivalent to the Deemed-to-Satisfy Provisions in accordance with A2G2(1)(b); and 

(b) shown to comply with the Performance Requirements through A2G2(2)(d). 

Note: 

The limitation above does not take effect until one year after the adoption date for NCC 2025.

Definitions:

VIC Flashing 

The VIC variation has been deleted and the NCC 2022/2025 version is now applicable.

The part of the Vic variation that has been removed is:

(c) Roof flashing: a rigid or flexible material, usually metal, fixed over, against or built into an abutment to form a weathertight joint. 

The BPC has indicated that this variation has been amended. However, it is not clear what the amendment is as the wording is the same as NCC 2022 variation.

(1) Performance Requirement H2P1 is satisfied for gutters and downpipes if they are designed and constructed in accordance with AS/NZS 3500.3.

(3) This subclause is deleted and does not apply in VIC. 

This VIC variation adds to the NCC 2025 clause list of High Hazards requiring individual protection:

(x) A water point installed adjacent to a water closet that is not connected to a sanitary fixture (e.g. handheld douche spray). 

This VIC variation clause has been amended to remove “annual recurrence probability” and include “an annual exceedance probability” to the clause

A roof drainage system must dispose of stormwater flows from rainfall events having an annual exceedance probability average recurrence interval appropriate to:

(a) The importance of the building.

(b) The severity of potential damage to property, loss of amenity, illness or injury that would result from the failure of the system. 

This VIC variation has been amended to aid in quantification.

A roof drainage system must have an appropriate overflow device to transfer stormwater flows so that it avoids damage to property or hazard to people from a storm with an annual exceedance probability of 1%. 

This VIC addition has been amended to remove the words subsurface drainage:

Buildings and their surroundings are to be provided with a surface drainage installation and be constructed in such a manner as to provide protection for people, property and the environment from the adverse effects of stormwater. 

This VIC addition has been amended to remove subsurface drainage:

The design, construction, installation, replacement, repair, alteration and maintenance of surface drainage systems must be in accordance with AS/NZS 3500.3.