| 摘要 |
<p>A formwork system comprising a plurality of vertically disposable main legs (10), ledger frames (12) and bracing (26, 28) has each main leg provided with an end plate (38) to which is securable a rotatable female threaded element (44) of a screw jack (20). A releasable metal retainer plate (48) is securable to the end plate (38) to engage a flange portion (46) of the female element (44) whereby the female element is retained captive to the end plate (38) in freely rotatable relation thereto.</p> |
