Construction specifications to consider when selecting manholes and manhole covers include materials of construction, shape, and application. Common materials of construction include precast concrete, ...

Precast Concrete Precast manholes are usually made of concrete produced in sections at a factory and assembled at the site. Fiberglass Fiberglass is used with plastics to create an environmentally ...

This article was originally published by Autodesk's Redshift publication as "Realizing Architectural Dreams Through Design-Assist and Precast Concrete." Ancient Romans mixed lime and volcanic rock ...

OEM parts are often more reliable and more expensive than aftermarket parts. Aftermarket parts are more widely available and cheaper than OEM parts. Whether an OEM or aftermarket part is best ...

The forward section was brought too low beneath the surface so that when wakes from passing boats washed over the hull, water got into the submarine through an open manhole. The submarine ...

NEW YORK - Dramatic video captures the moment part of a sidewalk buckled in New York City after a manhole explosion ... on to pop up beneath her feet. Parts of the sidewalk that she had just ...

The 38-year-old Bangladeshi was struck by a precast concrete drain channel that was being lifted by an excavator. He was pronounced dead at the scene by a paramedic from the Singapore Civil ...

A Navy investigation blamed shipyard employees for negligence, as both the sonar dome’s manhole cover and a protective cofferdam had been removed during repairs, allowing water to flood the ...