From direct measurements of salient points (anchorages, mast tops and bases), this was fed into a form-finding program developed by Peter Kneen - also a founding member of LSAA.
The next stage was to produce cutting patterns which were joined to form a 1:25 scale model.
The final structure was fabricated by Bert Bilsborough. Bert was still keen on using both sewn and welded seams in the early 1980s but most PVC coated membranes from that time just used high frequency welding. George Clark developed much of the structural details of the supporting structure - masts, cables and anchorages.
Some images of the first structure erected in the domain follow: