The final stage of the test anchor programme at Hazelmere dam is nearing completion with the installation of the fifth test anchor (referred to as the dress rehearsal anchor) in the crest of the dam. The four previous test anchors were designed and constructed at various locations in and around the stilling basin to quantify the geotechnical capacity of the ground for design purposes. The objective of the dress rehearsal anchor was to provide an opportunity for the specialist anchor contractor to demonstrate their abilities to execute a fully corrosion protected anchor in the location of the proposed production anchors. This anchor is effectively the first full scale anchor installed in the crest of the dam and its installation was meticulously scrutinised by specialist anchor consultant Dr Devon Mothersille. Over the next month the grouted tendon will cure until it acquires the appropriate levels of strength before the stressing and testing of the anchor will take place and this is scheduled for mid-July 2016.
Photograph shows Dr Mothersille standing next to the 61 strand, 80m long dress rehearsal anchor.
After months of dedicated endeavor, ISO/TC 182/WG 3 has completed a comprehensive review of prEN ISO22477-5 (Geotechnical investigation and testing – Testing of grouted anchors) under the guidance of Convenor Dr Devon Mothersille. After addressing some 392 comments on a provisional draft in April 2015, the group tackled 67 comments at a sub-group meeting in Leuven, Belgium in April 2016 and further 98 comments at a working group meeting held at the British Standards Institution (BSI) in London in June 2016. The document has been submitted to BSI and who will then submit it for public enquiry.
Photograph shows Dr Mothersille with Mr Klaus Dietz (Chairman of the German Anchor Group) deliberating over some difficult clauses
Photograph below shows the 6 members who attended the meeting: from left to right Ole Moller (Denmark), Chris Irvin (UK), Dr Devon Mothersille (UK), Tarmo Tarkkio (Finland), Jad Diab (France), Klaus Dietz (Germany)