Upper Framed Panel Form
The upper part consists of three main elements: (1) framed panel form, (2) supporting brace, and (3) working platforms. The framed panel form consists of a plywood face supported by two or more strongbacks. The frame panel form and the stongbacks are supported by an adjustable pipe brace. The brace is used for plumbing and stripping of the frame panel form. The strongback beams and the pipe brace are rested and connected to a horizontal beam that is anchored to the top of the concrete wall underneath the wall being poured. The strongbacks, brace, and the horizontal beam are forming a truss system that supports the freshly placed concrete. Another function of the horizontal beam is to support the walkway under the lower working platform.
After the concrete gains enough strength to support its own weight, the framed panel form is moved away from the concrete wall to allow the attachment of landing brackets for the next pouring position and to finish concrete patching. The framed panel form is moved away by either tilting or moving horizontally by rollers away from the concrete wall.
There are two working platforms in the upper framed panel form. The upper working platform is used to place and vibrate con-
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Upper Working Platform
Lower Working Platform
Figure 6.6 Jump form components. (Courtesy of SYMONS Corp.)
crete and to attach the landing bracket (jump shoe). The lower working platform has two functions: (1) to allow construction workers to remove form ties and anchor bolts and (2) to clean and re-oil form panels.