Graphical Construction Glossary >> Temporary Work. >> formwork >> Back Propping
The structural engineer may require that a newly poured concrete slab should be supported by props for a certain amount of time until it has gained enough strength to support the loads to be imposed upon it.
At the same time the builder wants to strip the formwork and use it on the next slab.
The answer is to remove the formwork while at the same time never leaving the slab unsupported.
This is a fairly easy task, but it does take longer than just simply stripping the slab in the normal way and then sticking a few props up after everything has been cleared out.
For this reason or maybe because of ignorance a lot of formworkers do not back-prop correctly.
For non glossary articles of a general and how to nature go to the formwork section on this site.
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