When constructing in-situ cast reinforced concrete or masonry arches, it is common practice to employ the use of temporary falsework until the structure is self-supporting.
Arch formers manufactured from lightweight Filcor (Expanded Polystyrene) are an economical method of providing temporary support to arched / curved masonry structures whilst in construction. In order to minimise costs, arch formers can be used in conjunction with traditional falsework e.g. scaffolding to support them at the required height.
Each former is designed to meet the specific requirements of the project including the size, shape, finish and number of re-uses. Using this information, our designers will select the most appropriate material for each former and create a 3D CAD model for approval, which when accepted will allow CNC machining of the finished formwork solution.
*Alternative materials are available upon request and can be supplied to achieve concrete finishes as outlined in the National Structural Concrete Specification (NSCS) Edition 4 guidance available below.
Used to provide temporary support to reinforced concrete or masonry arch structures during construction.
When developing an arch former design, the following factors should be considered in addition to reviewing any CAD drawings, 3D models, specifications etc that are available:
Once the project requirements have been confirmed, a conceptual design can be completed along with provision of a quotation confirming proposed material type, features, quantities, manufacturing lead time and costs.
Materials & Finishes:
Typically, Cordek arch formers are manufactured from one of the following material types:
One of the factors determining the most appropriate material used to manufacture an arch former is the required concrete finish. Further information in relation to the classification of concrete finishes can be found within the National Structural Concrete Specification (NSCS) Edition 4 guidance, a copy of which can be downloaded from the Certification, Guidance and Approval section below.
Once approved, the agreed 3D CAD Model will be converted in to CAM data allowing accurate manufacture of the arch former via CNC hot wire cutting and / or 5-axis routing dependant on factors such as material type, complexity of shape / profile and required tolerances.
In some instances, due to the required dimensions of the arch former, it may comprise of a number of individual units that require assembly on site