Falsework consists of temporary structures used in construction to support a permanent structure until its construction is sufficiently advanced to support itself. For arches, this is specifically called centering. Falsework includes temporary support structures for formwork used to mold concrete in the construction of buildings, bridges, and elevated roadways.
Arch ring and falsework, 1932
Falsework centering in the center arch of Monroe Street Bridge, Spokane, Washington, 1911
Fabrication
Placement
Formwork is molds into which concrete or similar materials are either precast or cast-in-place. In the context of concrete construction, the falsework supports the shuttering molds. In specialty applications formwork may be permanently incorporated into the final structure, adding insulation or helping reinforce the finished structure.
Modular steel frame formwork for a foundation. Rebar has been stubbed up out of the concrete slab to form the base of future columns
Timber formwork for a concrete column. Adjustable metal screw jacks both stabilize and plumb the form
Aluminum formwork system
Placing a wall form. A matching form will be placed on the opposite side to create the space to pour concrete into
