bn:01914848n
Noun Concept
Categories: Tools, Sand, Arches and vaults, Civil engineering stubs
EN
sand box  sand-box  sand-pit  sand table  sandbox
EN
A sand box or sand jack is a device used for removing the centering of an arch. Each prop is mounted on a sand box. Wikipedia
English:
civil engineering
Definitions
Sources
EN
A sand box or sand jack is a device used for removing the centering of an arch. Each prop is mounted on a sand box. Wikipedia
A device to remove centring Wikipedia Disambiguation
term Wikidata
A box used for holding sand, for the purpose of young children playing in it. OmegaWiki