| 摘要 |
A method of making a composite prestressed structural member in the inverted position, comprising a support member being built up of two vertical joined I-beams (11,13) lying above, and a mould (25,27) for the concrete slab (41) lying beneath. The mould (25,27) is being deflected. The support member has a flange at or near the neutral axis, with respect to this load conditions. |
