Questions From the Field
Questions from the Field is a selection of questions NPCA Technical Services engineers received from calls, […]
Questions from the Field
Questions from the Field is a selection of questions NPCA Technical Services engineers received from calls, […]
Questions from the Field
Questions from the Field is a selection of questions NPCA Technical Services engineers received from calls, […]
Thinking Outside the Circle
In a world of round manholes, sometimes it’s hip to be square. By Eric Carleton, P.E. […]
The Danger That Lurks Below
In June, city workers conducting regular maintenance in downtown Indianapolis detected an underground sinkhole that, thankfully, […]
Manhole Sizing: A Science and an Art
A frequent question NPCA Technical Services engineers receive is, “What manhole diameter is used for a […]
Questions from the Field
Questions from the Field is a selection of questions NPCA Technical Services engineers received from calls, […]
Are Exterior Manhole Coatings Necessary?
Modern concrete used in precast manhole structures is strong, dense and durable. However, in aggressive environments, […]
Utility Structures Fire/Explosion Mitigation Steps and Measures
Every day, you pass over cast iron manhole covers in the road without a thought of […]
Precast Lighthouse
Provides stunning Great Lakes view. By Mark Crawford Greg Druzbik always dreamed of owning a grand […]
Precast Rules the Roost
As night falls in the Pacific Northwest, thousands of small, dark birds known as Vaux’s swifts […]
The Evolution of Manhole Vacuum Testing
ASTM C13.06 working to develop a new standard. By Eric Carleton, P.E. For the past five […]
