Tag Archives: penetrants

Spotlight on membrane penetrations

A couple of weeks ago, I received the following email… “Please review the inspectors deficiency report and provide us an Engineering Judgment similar to what you sent me just for a 1″ insulated copper pipe, but it penetrates only one side … Continue reading

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Spotlight on firestopping conduit risers

Firestopping conduit risers has always been a challenge for electrical contractors on high-rise construction projects. Typically anywhere from 8-20, 4″ conduits rise through the building, originating in the basement and continuing up the building through fire-rated floors.  There are a … Continue reading

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