Alresford Lodge is an existing swimming pool building constructed from green oak in Essex.
Fluid Structures were appointed to investigate and propose remedial works to the existing glass gable wall which had failed extensively.
The results of our analysis showed that for peak wind conditions the existing timber frame was likely to move up to 17mm laterally and it was concluded that the extensive cracking to the existing glazed faÃ§ade was a part result of this lateral movement, in conjunction with drying out movement in the green oak frame. In addition the cracking may well have been attributable to thermal shock as the elevation is south facing and the four existing top to bottom units were structurally inadequate.
Fluid investigated a number of options to stiffen the end gable and developed a solution whereby the posts, and truss timbers of the last bay were replaced with steelwork. The steel work sections were small enough so that they could be over clad in timber to appear similar to the original construction.
Each of the new lower glass units are some 3.6m wide x 3.0m high and are restrained by the bottom chord of the truss. The upper units sit on the lower units.