An entry from Deb Robertson's blog for 3 February 2013 entitled, "This and that...".
An entry from Deb Robertson's blog for 10 May 2013 entitled, "Taking a detour....".
An entry from Deb Robertson's blog for 8 January 2013 entitled, "Venturing into the central city....".
An entry from Deb Robertson's blog for 27 May 2013 entitled, "The Hottie Project 2013".
An entry from Deb Robertson's blog for 21 June 2013 entitled, "Buying New Zealand Made...".
An entry from Deb Robertson's blog for 11 July 2013 entitled, "Do you ever feel like you are walking through deep sand?".
An entry from Deb Robertson's blog for 16 November 2013 entitled, "Tidying up odds and ends...".
An entry from Deb Robertson's blog for 6 October 2013 entitled, "Earthquake Repairs Day is here!!!".
An entry from Deb Robertson's blog for 19 October 2013 entitled, "discombobulated".
An entry from Deb Robertson's blog for 27 September 2013 entitled, "Just so you know....".
An entry from Deb Robertson's blog for 11 November 2013 entitled, "Keeping it real...".
The connections between walls of unreinforced masonry (URM) buildings and flexible timber diaphragms are critical building components that must perform adequately before desirable earthquake response of URM buildings may be achieved. Field observations made during the initial reconnaissance and the subsequent damage surveys of clay brick URM buildings following the 2010/2011 Canterbury, New Zealand earthquakes revealed numerous cases where anchor connections joining masonry walls or parapets with roof or floor diaphragms appeared to have failed prematurely. These observations were more frequent for the case of adhesive anchor connections than for the case of through-bolt connections (i.e. anchorages having plates on the exterior façade of the masonry walls). Subsequently, an in-field test program was undertaken in an attempt to evaluate the performance of adhesive anchor connections between unreinforced clay brick URM walls and roof or floor diaphragm. The study consisted of a total of almost 400 anchor tests conducted in eleven existing URM buildings located in Christchurch, Whanganui and Auckland. Specific objectives of the study included the identification of failure modes of adhesive anchors in existing URM walls and the influence of the following variables on anchor load-displacement response: adhesive type, strength of the masonry materials (brick and mortar), anchor embedment depth, anchor rod diameter, overburden level, anchor rod type, quality of installation and the use of metal foil sleeve. In addition, the comparative performance of bent anchors (installed at an angle of minimum 22.5o to the perpendicular projection from the wall surface) and anchors positioned horizontally was investigated. Observations on the performance of wall-to-diaphragm connections in the 2010/2011 Canterbury earthquakes and a snapshot of the performed experimental program and the test results are presented herein. http://hdl.handle.net/2292/21050
The city of Christchurch has experienced over 10,000 aftershocks since the 4th of September 2010 earthquake of which approximately 50 have been greater than magnitude 5. The damage caused to URM buildings in Christchurch over this sequence of earthquakes has been well documented. Due to the similarity in age and construction of URM buildings in Adelaide, South Australia and Christchurch (they are sister cities, of similar age and heritage), an investigation was conducted to learn lessons for Adelaide based on the Christchurch experience. To this end, the number of URM buildings in the central business districts of both cities, the extent of seismic strengthening that exists in both cities, and the relative earthquake hazards for both cities were considered. This paper will report on these findings and recommend strategies that the city of Adelaide could consider to significantly reduce the seismic risk posed by URM buildings in future earthquake.
Friday 22 February 2013. File reference: CCL-2013 -02-22- IMG_4088 From the collection of Christchurch City Libraries.
Friday 22 February 2013. File reference: CCL-2013 -02-22-IMG_4082 From the collection of Christchurch City Libraries.
Friday 22 February 2013. File reference: CCL-2013 -02-22-IMG_4046 From the collection of Christchurch City Libraries.
Friday 22 February 2013. File reference: CCL-2013 -02-22-IMG_3965 From the collection of Christchurch City Libraries.
Friday 22 February 2013. File reference: CCL-2013 -02-22-IMG_3949 From the collection of Christchurch City Libraries.
Friday 22 February 2013. File reference: CCL-2013 -02-22-IMG_3961 From the collection of Christchurch City Libraries.
Friday 22 February 2013. File reference: CCL-2013 -02-22-IMG_3970 From the collection of Christchurch City Libraries.
Friday 22 February 2013. File reference: CCL-2013-02-22-River-of-FlowersDSC_03413.JPG From the collection of Christchurch City Libraries.
Friday 22 February 2013. File reference: CCL-2013 -02-22-IMG_4038 From the collection of Christchurch City Libraries.
Friday 22 February 2013. File reference: CCL-2013 -02-22-IMG_4077 From the collection of Christchurch City Libraries.
Friday 22 February 2013. File reference: CCL-2013 -02-22-IMG_4036 From the collection of Christchurch City Libraries.
Friday 22 February 2013. Horseshoe Lake, Christchurch. File reference: CCL-2013-02-22-River-of-FlowersDSC_03402.JPG From the collection of Christchurch City Libraries.
Friday 22 February 2013. File reference: CCL-2013 -02-22- IMG_4081 From the collection of Christchurch City Libraries.
Friday 22 February 2013. File reference: CCL-2013 -02-22-IMG_4043 From the collection of Christchurch City Libraries.
Friday 22 February 2013. File reference: CCL-2013 -02-22- IMG_4045 From the collection of Christchurch City Libraries.
Friday 22 February 2013. File reference: CCL-2013 -02-22-IMG_4085 From the collection of Christchurch City Libraries.
Friday 22 February 2013. File reference: CCL-2013 -02-22-IMG_4072 From the collection of Christchurch City Libraries.