| 摘要 |
The stairs are produced by means of a form consisting of a mold bed 16 on which the mold's long side pieces 20 can be at any distance from each other. Between these long side pieces 20 plate supports 22 are arranged which at the upper side have recesses 33 for mounting of plane and set step- forming plates 28, 29 which together form the bottom of the mold. The mold end pieces 31, 32 are also installed between the long side pieces 20 in enagement with the plate supports 22 and at a distance from each other which corresponds to the length of the stairs. In this mold formed by long side pieces 20, end pieces 31, 32, and plates 28, 29, concrete is poured and after the curing of the concrete, complete stairs can be removed from the mold. <IMAGE> |
