Understanding loads
Enquiries to the BRANZ helpline show that the meanings of characteristic strength, capacity, ultimate load and serviceability load are not well understood. We take a look at what the various terms mean.
Loadings
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Changes to barrier loadings
Recent changes to the loading standards will mean changes to the design of barriers.
Loaded dimension for bearers
Several readers recently asked how to interpret loaded dimension for bearers under external loadbearing walls. Here’s what you do.
Seismic design for suspended ceilings
Suspended ceilings fared poorly in recent earthquakes. In response, the relevant standard was revised, and there are stringent design and installation requirements to prevent collapse in a 1-in-500-year event.
Loaded dimension
A Build reader has asked what is the correct loaded dimension for a lintel supporting a hip roof. The correct answer is, it depends.
Joining roof trusses
Most timber trusses are delivered to site as one-piece building components. However, occasionally they are delivered in sections and must be joined on site. Correct installation of these is critical to maintain the designed load paths.
Selecting joists for cantilevered balconies
Changes to timber treatments mean revisiting the joist sizes needed to build a safe cantilevered balcony.
Loaded dimension – a guide
‘Loaded dimension’ is an important term to understand when designing timber framed buildings. It ensures that the correct size of load-bearing timber is selected for each situation.
