Re: Cantilever Pole Retaining Walls, John Wood I read John Wood’s excellent feature article on the above topic with interest and found that John has provided answers to many questions that, as a designer, I have been keen to see addressed and where possible resolved….
The sequence of strong earthquakes in Canterbury in 2010 to 2011, most notably the devastating Mw 6.2 earthquake on 22 February 2011, the source of which was located within Christchurch, resulted in 185 fatalities and extensive damage to buildings and infrastructure. Liquefaction occurred on several…
ABSTRACT The current SH1 alignment at Bulli Point follows the eastern margin of Lake Taupo and is situated directly above the lake at the toe of a sharp ridge. The site has a history of low speed crashes due to an ignimbrite bluff overhanging…
Abstract Cantilever timber pole walls are one of the most commonly used forms of retaining wall construction used in New Zealand for low to moderate retained heights. Pole walls in New Zealand have mainly been designed using the isolated pile theory (Broms) or by continuous embedded…
This paper was prepared for the NZGS 2020 Symposium and will be presented at the rescheduled meeting ABSTRACT Sumner Road between Lyttelton to Evans Pass was severely affected by rockfall as a result of the 2010-2011 Canterbury Earthquake Sequence. Approximately 2 km of Sumner Road…
Prepared for the 69th Highway Geology Symposium, September, 2018 ABSTRACT The November 2016 M7.8 Kaikoura earthquake resulted in excess of 40 landslides that directly impacted the key road and rail corridor on New Zealand’s South Island. Within two months, the New Zealand Government formed the…
Lecture Summary There is a growing emphasis on Displacement Based Earthquake Design (DBD) analysis for buildings, retaining walls and bridge structures. DBD is specified as the preferred design method for highway structures in a draft revision of Section 5 of the Bridge Manual (NZ Transport…
Abstract The 14 November 2016 Mw 7.8 Kaikōura earthquake triggered thousands of large landslides and caused severe disruption to the state highway and local road network in the North Canterbury and Marlborough regions. Damage to the network included landslides, debris flows, rock falls, failure of…
Abstract Soil nailing is a common type of construction for retaining walls. For retaining wall structures with “passive” nails, mobilisation of the nails is required in order to retain the ground. An approximately 400 m long vertical soil nail retaining wall of up to 7.5…
Abstract Building control authorities use producer statements throughout the building consent and certification process. When it comes to geotechnical matters, acceptance of a producer statement may not be a reliable indication that the works comply with the building code. There is often a lack of…
