| 摘要 |
A method of manufacturing precast concrete units (C), such as prison cells, culverts, lift shaft or staircase sections or the like, employs a main frame (10) to which side and/or end wall panels (87, 52, R & F) are hingedly connected. The wall panels (51, 52, R & F) are cast in the horizontal moulds (20-23) and when the concrete is cured, the moulds (20-23) are raised to a vertical position, where the panels (51, 52, R & F) are supported by internal and external corner forms (13, 14, 24-27), to enable connection and grouting to each other and floor or roof panels (CF). The main frame (10) is retracted and the completed unit (C) is lifted free and the cycle is repeated. |
