manhole Archives

Safety Moment – City Engineer Loses His Life After Entering A Manhole To Retrieve A Flow Meter

By admin | |

On May 28, 2003 a 32 year old city engineer entered a 7’4” deep manhole to retrieve a flow meter and lost his life. Air quality monitoring performed in the manhole at the time the fire department retrieved his body indicated an oxygen concentration of only 2.1% and flammable vapors over 60%.

What’s a Packaged Metering Manhole?

By bdalton | |

The Packaged Metering Manhole was introduced to the wastewater market by Plasti-Fab, Inc. in 1982. In its simplest form it consists of a flume molded into a composite (FRP) manhole. The full range of flumes may be integrally molded into the composite manhole, along with inlet and outlet adapters, pipe stubs, and monitoring accessories for…