Abstract In this paper, an integrated methodology is introduced for estimating the static vertical subgrade reaction modulus from CPT for shallow foundations on cohesionless soils. The proposed methodology relies on fundamental concepts of soil mechanics and foundation engineering applicable to flexible foundations. The methodology returns…
Abstract The Light Weight Deflectometer (LWD) is a portable device that measures the onsite dynamic or resilient modulus (Evd) of subgrade soils and pavements. The LWD, which has been used extensively in Europe and the United States, has become popular for assessing the stiffness of…
Abstract Liquefaction has been reported following upwards of 13 recent and historical earthquakes in New Zealand. Collating reports outlining the extents of liquefaction manifestation following these events provides insights into the distributions of sediments with low cyclic resistances to liquefaction, and enables liquefaction hazard assessments…
Abstract A case study of performance based seismic design (PBD) for a critical wharf facility is presented and compared to conventional design methods. The Oil Wharf at the Lyttelton Port is a critical infrastructure link for New Zealand’s South Island. The wharf suffered extensive damage…
Abstract Christchurch City and its surrounds experienced a series of damaging earthquakes in 2010 and 2011. During the 22 February 2011 earthquake, extensive cracking and movement of the ground occurred in some areas of the Port Hills. We have used a geological modelling package, Leapfrog3D®,…
Abstract Watercare Services Limited (WSL) operate a very large municipal wastewater treatment plant at Mangere, Auckland. A by-product of the treatment process is the creation of a stabilised biosolid. Through a review of operations an opportunity was identified to rehabilitate a retired quarry on the…
Abstract The earthquakes that hit the region of Canterbury, New Zealand, in 2010-2011 resulted in severe damage to buildings and infrastructure due to widespread liquefaction of natural clean sand and silty sand deposits of fluvial origin. Despite the significant hazard posed by earthquake-induced liquefaction to…
Abstract The four-lane, 21.8-km long, Hamilton Section of the Waikato Expressway is the largest road project undertaken in the Waikato region’s history and one of the larger highway projects currently being undertaken in New Zealand. Many of the seventeen expressway bridges in the Hamilton Section…
Abstract The four-lane, 21.8 kilometre long, Hamilton Section of the Waikato Expressway is the largest roading project undertaken in this region’s history and one of the larger projects currently being undertaken in New Zealand. Many of the seventeen expressway bridges in the Hamilton Section are…
Abstract The foundation of the Administration and Operations Building of Lyttelton Port of Christchurch (LPC) required the installation of 81 driven steel piles, of which 8 were tested using high strain dynamic testing (PDA). The majority of these high strain dynamic tests were conducted remotely,…