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 Lintels and Beams Calculator

The BRANZ Lintels and Beams Calculator is intended for use on buildings within the scope of NZS 3604:2011 Timber framed buildings, but the range of applications, loads and spans goes beyond what is in the standard. Read more about the engineering basis (PDF 551kB).

Go to the Lintels and Beams Calculator. Log into MyBRANZ to access this tool. See link at top of page.

It's easy to use:
1. Create a project (including project name, project reference, client, site address, wind zone, snow load).
2. Do a calculation.

Choose a beam application:
- Lintel supporting a roof only
- Lintel supporting roof and wall
- Lintel supporting roof, wall and floor
- Veranda beam
- Floor beam
- Deck support beam
- Roof beam (ridge or intermediate)
- Garage door lintel

Select a beam design:
- MSG/VSG8 sawn timber - 45 mm thick
- MSG/VSG8 sawn timber - 70 mm thick
- MSG/VSG8 sawn timber - 2/45 mm, laminated as per NZS 3604
- MSG/VSG8 sawn timber - 90 mm thick
- Laminated veneer lumber (LVL) - 45 mm, 63 mm or 90 mm thick
- Glulam - 65 mm or 90 mm thick
- Hot rolled steel sections - universal beams
- Hot rolled steel sections - parallel flanged channels
- FB15L Mitek flitch beam
- 150PF6 Pryda flitch beam

3. Save the calculation to a printable summary schedule. You can save calculations for other beams/lintels for the same project in one schedule, and you can make changes. Each calculation will be saved on the BRANZ Lintels and Beams Calculator website for 6 months for FREE.
4. Buy the calculation. Purchase full calculation schedules to include in consent application documents. We suggest you also submit the engineering basis (PDF 757kB). (Any calculation not purchased within 6 months will be deleted from the BRANZ Lintels and Beams Calculator website.) Lintels and Beams calculations are available to purchase singly or in multiples. One calculation costs $35, two cost $34 each, three cost $33 each - up to 100 at $15 each.

Please note: The purchase of a calculation includes a PS1 covering the development of the software. A project-specific PS1 prepared by the project designer is required by the building consent authority (BCA). For some BCAs, the date of each PS1 must be no older than 90 days from submission of a consent application.