A recent air leakage test on one of our Passive House projects achieved 0.24 ACH@50 (air changes per hour at 50 pascals pressure), well under the 0.6 ACH@50 required to achieve Passive House certification! Compared to the typical range of 5.0 to 15.0 ACH@50 for houses constructed under the energy efficiency requirements of NCC2019, this…
Significant challenges were encountered in the design of this 100m tall Ø600mm pipe riser, with the initial 1000kN pipe anchor loads (gravity + bellows thrust) exceeding the limits that could be supported by the existing concrete building core. A detailed analysis of pipe thermal effects, construction sequencing and design building movements enabled a reduction in the…
Seismic design, without bracing! AS1170.4 provides simple, static force-based methods for determining earthquake design actions on building services. But there’s nothing static about an earthquake. Seismic ground motions are dynamic events that shake buildings in dynamic ways, and the standard allows for the design of buildings and building services using dynamic methods. Dynamic analysis of suspended…
