Wind loads on a typical low-rise house.

Bibliography: p. 20-21

A wind tunnel model study was carried out to determine the wind loads on a typical low-rise house. The measured loads were satisfactorily enveloped by the pressure coefficients prescribed in AS1170.2 on most areas of the building except in the region immediately downwind of the ridge for oblique approach winds. The underestimation of pressure at the ridge for oblique approach winds by AS1170.2 can be avoided by increasing the local pressure factors Kl. The roof truss experiencing the largest wind load was identified as the second from the windward gable end. Selected load effects (ie. hold down forces etc.) determined using the covariance integration method were generally smaller than the design values obtained from using pressure coefficients prescribed in AS1170.2. The full scale testing procedure employed at the CSTS, by applying pressures from AS1170.2 gererated larger load effects compared with those derived from wind tunnel data. The equivalent static pressure distributions obtained for selected load effects on the truss experiencing the largest wind loads were contained within the peak pressures derived from AS1170.2