That is exactly what is happening. We are going to have the contractor open cut the min slope gravity line just before the hill that was televised and showed isolated high spots and he will reinstall at min 1% grade (was originally directionally drilled) to ensure gravity flow to the hill and...
It was more intended as a unique design to advantage of our grade and implement both pressurized and gravity flow. The flow was intended to be forced to a high point by the pump station. From this high point (which is an open manhole / open atmosphere with an emergency overflow integrated into...
Let me be a little more specific....the model I attached is forcemain but treated as gravity the entire run down the hill and to the existing manhole it outlets into. My question is initially at the top of the hill at the open atmosphere air release manhole there is alot of surcharging...
I have a pump station that discharges to a high point and from that point forward runs gravity downhill and the gravity portion is backing up into the my high point (fortunately I have emergency overflow that sewage goes to). Basically similar concept as pumping uphill and then downhill (65’...
I ran a fire flow analysis on my WaterCAD model and cannot attain any available fire flow to any nodes in the system (0 gpm) thus not satisfying the flow constraints of 1,500 gpm. Does anyone know why I would have 0 gpm available fire flow throughout the entire system, would this have to do...
Am new to WATERCAD and have laid a hydraulic model for a community and attained hydrant flow test data. How do I calibrate the model to verify it matches field data? Do I just run fire flow analysis and adjust the global demand / roughness as the manual suggests until model matches field data...
Have laid a hydraulic model for a community and attained hydrant flow test data. How do I calibrate the model to verify it matches field data? Do I just run fire flow analysis and adjust the demand / roughness as the manual suggests until model matches field data? Do I include flows in my...
