An apparatus for depositing and consolidating concrete under water, essentially a tube of wood or sheet metal with a hooperlike top. It is usually handled by a crane.
device for placing concrete underwater; consists of a large metal tube with a hopper at the top end and a valve arrangement at the submerged end
(1) (verb)To place concrete below water level though a pile, the lower end of which is kept immersed in fresh concrete so that the rising concrete from the bottom displaces the water without washing out the cement content. (2) (noun) The hopper and drop pipe used to place the concrete underwater.
A tube with removable sections and a funnel at the top used in concrete application. The bottom is kept beneath the surface of the concrete and raised as the form is filled and is used to pour concrete underwater.
A pipe through which concrete may be placed under water, having at its upper end a hopper for filling, and a bale which permits handling of the assembly by a derrick.
A device used to place concrete or grout under water.