| 摘要 |
1,253,033. Moulding concrete columns. SANDERS & FORSTER Ltd., and M.H. BRIGGS. 2 Jan., 1969 [23 Jan., 1968], No. 3566/68. Heading B5A. [Also in Divisions E1-E2] A column with attachment nuts 132, 134 embedded therein is cast in a mould 130, the nuts being secured by bolts 131, 133 to the flanges 135 of a cruciform re-inforcing member as shown. The nuts 132, 134 may be aligned by unthreaded bolts or the ends of the bolts may be taped or greased to assist in their withdrawal. |
