On a sanitary sewer project currently under construction, a new manhole has developed a slight leak between the gasket and the pre-cast concrete manhole wall. The manhole is 13' deep and is located approx. 125' from a creek; current ground water conditions are high. The inside of the next...
Is there a way to form a watertight sanitary service connection to a 36" PVC carrier pipe inside a 54" steel casing pipe? Spacers will be installed on the 36" carier pipe centering it within the 54" steel casing. A vertical service riser needs to extend through the top of the casing and connect...
We have a multi-million dollar sanitary sewer extension project that is currently under construction. The soil borings obtained during project design revealed extensive rock excavation would be required. Accordingly, language was incorporated into the specs to address a myriad of blasting...
We're in the design phase of a sanitary sewer upsizing/replacement project. The new sanitary sewer will be 36" and 30" diameter PVC. Steel casings (bored and jacked) are planned along several runs to help minimize disruptions/impacts to local businesses.
Two existing sanitary services need to...
Hi,
I'm designing a sanitary sewer that will include a 1,200' section extending through a slough. The slough is subjected to annual ice flows (shallow shields, typically 4" to 6" thick) from an adjacent river and I noticed many of the area trees are severely scarred due to abrasive action of...
Hi
The sewage treatment plant where I work plans to install a 650 gal. heated mixing tank to process grease and scum from the primary settling tanks. Currently, scum from the primary tanks passes through a grinder and is then pumped to a Walker Separator tank...
