| 摘要 |
<p>The novel method for constructing a formwork for cast concrete stair flights consists of the steps of carrying out an on-site survey in the course of which the exact characteristic data of the stair flight to be erected are determined, selecting an optimum pair of values of step height (sh) and stair step (ss) from a range of available predetermined set of values, preparing at least two form templates (2) of a length covering the total length of the stair flight to be erected, fixing, temporarily and provisionally, one of the form templates (2) to the wall surface confining the inner side of the stair flight to be erected and comparing, in situ, the correct shape and size of the stair flight and the form template (2) prepared for use in the formwork, removing the form template (2) from the wall and placing on and fixing the at least two form templates (2) to a form panel (fp), placing and fixing at least one side panel (sp) determining the at least one exposed side surface plane of the stair flight to the form templates (2), inserting and arranging reinforcing steel members providing the reinforcement structure of the stair flight within the formwork, arranging and fixing the cross panels (cp determining the front surfaces and the step height (sh) of the individual stairs of the stair flight to be erected, inserting, if any, sanitary engineering and electric fittings as well as receiving members such as internally threaded wall dowels (wd) for fixing various building structure members e.g. handrail supports etc. into the formwork, and fixing and securing the formwork members at their prescribed locations. The form template (2) of the invention is confined, on the top side of its position in the formwork, by perpendicular vertical and horizontal edge sections determining the characteristic sizes, especially the selected values of step height (sh) and stair step (ss) of the stair flight to be erected.</p> |
