Timber Houses and Buildings in New Zealand

Timber Houses and Buildings in New Zealand Graeme Beattie, Principal Structural Engineer, BRANZ (graeme.beattie@branz.co.nz) Presentation at CTT CORMA 14 May 2010

Timber Buildings ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Timber Framed Houses Older houses – before 1980

Timber Framed Houses New houses – since 1980

Timber Framed Houses Pressed metal roof tiles Brick as a cladding – not structural

[object Object],[object Object],[object Object],[object Object],Typical Framing

Typical Timber Framing Truss Wall frame Timber floor

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Regulations

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],NZS 3604:1999

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],NZS 3604:1999

Wall Bracing Test (BRANZ P21) Jack and loadcell Test Specimen (Drywall) Load Load is cyclic to increasing Displacements www.branz.co.nz

Wall Bracing Hold down Concrete Floor on ground 25mm x 1mm strap wrapped under plate and nailed to stud 12mm bolt and 50mm square washer

[object Object],Wall Bracing Hold down alternative Sheet Lining

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Multistorey Timber Buildings

Joints Between Tenancies Important to maintain continuity of floor diaphragm Floor Topping Plasterboard

[object Object],[object Object],[object Object],Multistorey - Heavy Sections LVL Box Beam LVL Box Column Post tensioning cable

Multistorey - Heavy Sections University of Canterbury STIC Project www.stic.co.nz for other information/videos

[object Object],[object Object],[object Object],[object Object],Conclusions

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Timber Houses and Buildings in New Zealand

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Timber Houses and Buildings in New Zealand