An 18 inch PVC SDR 35 sanitary sewer line is to be installed. The installation will be completely below the groundwater level. What is the buoyancy force acting on the pipeline in terms of a force per linear foot?

Asharp-edged orifice is placed in a 10-in-diameter pipe carrying ammonia. if the volume flow rate is 25 gal/min, calculate the deflection of a water manometer (a) if the orifice diameter is 1.0 in and (b) if the orifice diameter is 7.0 in. the ammonia has a specific gravity of 0.83 and a dynamic viscosity of 2.5 x 10-6 lb s/t2