Does anyone have any information on ideal peak factors to use for sewer pump station design flows. Ten States has a chart for peak factors based on population but this is excessive and seems to be more aclimated to large plant flows. The state regulators here are now requiring a minimum of 4.0...
Is anyone aware of any regulations or rules of thumb on how close to existing underground pipelines blasting should be allowed. We have an existing 12" sewer force main which is about 8 feet from where a contractor is preparing to blast for a new 18" trunk sewer. The gravity sewer will be about...
I am looking for a solution to a problem I am having with new manhole construction. The lid frames are being knocked off of the new manholes by grading equipment. This is occuring after we have inspected and approved the new sewer line and manhole construction in many of the new developments...
