by Hotchkiss A R, Edwards M J. (01-Jan-1988)
NB This pdf is a scanned copy of the original report so is not as clear as pdfs created as such.
Bison's first housing contracts using their own complete systems started in 1963 with a scheme at Kidderminster. Prior to this, Concrete Ltd, the manufacturers of Bison concrete products, had produced concrete components such as floor units, columns and beams, for incorporation into other buildings. In common with other large panel systems, those produced by Bison arc based upon large storey-height precast reinforced concrete panels. The edge details of the panels and floor units form cavities which are filled with in-situ concrete. These in-situ joints are provided with reinforcement to tie the precast panels together, and give a degree of continuity to the structure.
Bison produced three basic systems (Wall Frame, Crosswall and Preferred Dimension Frame), which were evolved and developed over a period of years. Bison buildings therefore differ from each other in constructional detail and external appearance. The photographs in this report illustrate the variety of Bison buildings and the difficulty of identification by external appearance alone. This report describes the basic systems and their methods of construction, as far as available information permits. It also describes the individual elements manufactured by Bison (Appendix A), so that 'hybrid' construction may be identified.