Calculators and tools

H1 Calculation method tool

This tool automatically applies the calculation method of H1/AS1 5th edition amendment 1 and generates a results page that can be used to demonstrate compliance.

Build Insights tool

Build Insights is an online tool that brings together trusted economic data and insights from across the building and construction sector.

NECO2 - National Embodied Carbon Repository

New Zealand’s National Embodied Carbon Repository, NECO2, is now freely available – providing BRANZ-verified carbon data.

BRANZ House insulation guide 6th edition

Construction R-values for common construction options for compliance under H1/AS1 and H1/VM1 5th edition.

BRANZ Resource recovery map

Search an address or a region to view information about the resource recovery sites nearby. Filtering by accepted waste streams is also available.

BRANZ Artisan: Building inspection app

This aims to improve the building consent authority building inspection process. Artisan is a digital solution that enables each key step in the residential build inspection process to be prescribed, seen, assessed, verified and recorded.

LCAQuick: Life cycle assessment tool

LCAQuick is a free tool developed by BRANZ that helps architects, designers and structural engineers make sustainable design decisions. It evaluates the carbon footprint and other environmental impacts of a building design.

B-RISK: Design fire tool

B-RISK fire risk modelling software allows fire simulation results to be presented in a probabilistic form and allows the variability and uncertainty associated with the predictions of the fire environment to be quantified.

LCAPlay

Compares the impact of different building forms, structural systems, façade and HVAC systems in commercial buildings.

BRANZ Maps: Zone information tool

This shows a range of information for a given address, including earthquake zone, exposure zone and climate zone.

Lintels and Beams

This Lintels and Beams spreadsheet is available to assist in making calculations while the online tool is under review.

H1 Schedule method tool

This tool checks for compliance of housing and small buildings with the schedule method of H1/AS1 5th edition amendment 1.

CO₂MPARE

Provides building carbon benchmarks and carbon budgets based on BRANZ's research that can be used for setting targets at the start of a project.

CO₂RE

Compares the impact and R-values of common residential construction.

H1 Hub

A collaborative initiative between BRANZ, MBIE, ADNZ, NZIA, WGANZ, IAoNZ, NZGBC, and FTMA. It provides H1 related search results across all our websites.

MyBRANZ Knowledge

A smart search tool that uses the profile you've created and your search query to return personalised responses across all BRANZ websites and content.

Bracing calculation sheets

Bracing calculation sheets for foundations and walls for use with NZS 3604:2011.

Download [PDF, 400KB]

BRANZ TR8 Concrete floor systems

TR8 software is a model to predict the fire resistance of concrete slabs and floor systems and can be used for the design of reinforced or prestressed concrete floor systems when required to have fire resistance.

BRANZ TR9 Timber-framed wall or floor/ceiling systems

TR9 software is a model to extrapolate the results of a fire resistance test on a light timber framed wall or floor/ceiling to a greater height or span and/or loading.

P21 A wall bracing test and evaluation procedure

This outlines the P21 test method for wall bracing elements, which is called up in NZS 3604:2011 Timber-framed buildings as the means to determine wind and earthquake ratings of timber-framed sheet-lined bracing elements for buildings.

Passive fire protection risk assessment tool

This tool has been designed to provide a basis for assessing the means of escape from fire risk caused by defective passive fire construction and whether it is reasonable and practicable to repair.

Download [XLS, 203KB]

Photovoltaic generation calculator

Use this calculator to determine the average yearly electricity generation capability of your photovoltaic (PV) system.

Prefab toolkit

This enables costs to be combined with time in order to assess the merits of prefabrication at the start of the design and construction process.

Download [XLSM, 4.1MB]

Thermal bridging calculation tool

This tool determines the thermal performance of cavity insulated timber-framed walls. It may also be used to determine the steady state R-value (U-value) and compare results.

Download [ZIP, 26MB]

Note: National Embodied Carbon Data Repository is now live 📢