CONSTRUCTION METHOD OF MANHOLE BATHOLITH INVERT

摘要

PURPOSE: To enhance working efficiency and secure construction safety as well. ;CONSTITUTION: An expanded plastic molded item 1 having a shape which runs along a flow passage used as a form. The form is installed and set to suit with the positions of pipelines 3a and 3b connected to a manhole 2. Then, mortar 4 is poured thereto. After the mortar 4 is cured, the molded item 1 is removed, thereby shaping up a batholith invert having a flow channel slope. This construction makes it possible to eliminate any need for sophisticated technique to assemble the form and construct the invert without handing any heavy weight item.;COPYRIGHT: (C)1995,JPO