PROCESS FOR MAKING TUBE-SHAPED OPENINGS IN CONCRETE OR STEEL CONCRETE ELEMENTS

摘要

the invention refers to a process for making holes in reinforced concrete hollow prefabricated elements, in order to montarii of plumbing electrical installations, in particular.the process to achieve the goals in the hollow concrete or reinforced concrete, according to the invention, comprises a phase pensulare coating with a liquid preventing adhesion.preferably oil, a tube of cofrare consisting of an elastic material, preferably rubber, followed by a phase of cofrare mounting tube according to a route presatabilit,some doses between mounted in advance in a pattern frame, before or after this phase.