46
the original stone. So we did that and it showed that we’d done it properly.” The courtrooms were vacant at the start of the project but the
cells on the lower ground floor were still being used and this con- tinued throughout the first few months of construction. This limited survey time as the design progressed. Gifford overcame this using laser scanning, while for the team at contractor Kier, detailed planning became essential. The team did not have the original design calculations and the
the stone down, address the steelwork and replace the steel or grind off the rust then spray.” When Kier’s team came to put back the existing external
materials, the location of the original stone became a hot topic. James adds: “We had a few discussions about whether we had put the stone back properly. Then our stonemasons suggested we look on Google Street Map, which showed the location of
building did not have any vertical braced bays but the steelwork connections and high relative stiffness of the internal masonry partitions meant that lateral wind loads are transferred into these partition walls. Forder adds: “Design calculations to proportion the load share
between remaining existing walls have shown that new reinforced concrete shear walls need to be installed in the building, laced through the upper floor tied into the existing foundations.” The 46-metre clock tower that stands above the grand hall
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