| 摘要 |
PROBLEM TO BE SOLVED: To provide a resin mortar invert easily and minutely adjustable in installation work and for finishing when installed for the solution of problems in a concrete house-inlet and dispensing with time and labor for finishing an invert ditch to permit rapid and accurate channel formation. SOLUTION: This resin mortar invert 1 is applied to a concrete house-inlet constituted in such a way that the invert 1 communicating with a sewage inflow port 12 and outflow port 13 provided at a house-inlet body 11 is installed in the house inlet body 11 and that concrete is placed on the outside of the invert 1, and the invert 1 is formed of resin mortar provided with a ditch communicating with the inflow port 12 and outflow port 13.
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