It will be necessary to fill a 300,000 yd3 depression, and the fill material must be compacted to 95% of the standard proctor (maximum) density. a 10% final moisture content is desired in either case. the unit weight of water is 62.4 lbf/ft3. (a). what would be the excavated volume of borrow from site a in place? (b). what would be the volume of borrow from site b in transport? (c). what soil would be cheaper to use? what’s the cost for the cheaper soil? (d). what is unit weight in transport from borrow site b?

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.

Abrake has a normal braking torque of 2.8 kip in and heat-dissipating cast-iron surfaces whose mass is 40 lbm. suppose a load is brought to rest in 8.0 s from an initial angular speed of 1600 rev/min using the normal braking torque; estimate the temperature rise of the heat dissipating surfaces.

Give heat transfer applications for the following, (i) gas turbines (propulsion) ) gas turbines (power generation). (iii) steam turbines. (iv) combined heat and power (chp). (v) automotive engines