Prefab. sunken sewerage shaft reinforced concrete sections - have rebates and plates in wall sections on bottom frame flanges

摘要

Prefab. rectangular reinforced-concrete components are joined together flush by interlocking end lugs, to make up a sunken shaft for sewerage installations. At the bottom it has a frame-type cutting shoe with peripheral horizontal support profile (7), and protruding support flanges for flat rectangular walling pieces (5',6) accommodating side or end shaft wall sections. These pieces have rectangular-sectioned folds (7,8), of breadth and depth enabling them to be assembled together flush, as the correct angle, in the shaft peripheral line. At the four inner corners steel plates are installed for attachment of corner angle pieces (32), providing form connection. The components are readily transportable and easily assembled, proving adequate stability for continuous sinking, in a rapid process.