Engineering, 27.11.2019 01:31 mgnbrnne

In laying water mains, utilities must be concerned with the possibility of freezing during cold periods. although the problem of determining the temperature in soil as a function of time is complicated by changing surface conditions, reasonable estimates can be based on the assumption of a constant surface temperature over a prolonged period of cold weather.

what minimum burial depth x would you recommend to avoid freezing under conditions for which soil, initially at uniform temperature of 20 oc, is subjected to a constant surface temperature of -15 oc for 60 days?

Answers: 2

Show answers

Another question on Engineering

Engineering, 04.07.2019 18:10

Atmospheric air has a temperature (dry bulb) of 80° f and a wet bulb temperature of 60° f when the barometric pressure is 14.696 psia. determine the specific humidity, grains/lb dry air. a. 11.4 c. 55.8 d. 22.5 b. 44.1

Answers: 1

Answer

Engineering, 04.07.2019 19:10

Asteam is contained in a rigid tank with a volume of 1 m3. initially, the pressure and temperature are 7 bar and 500 oc, respectively. the temperature drops due to cooling process. determine: (1) the temperature at which condensation begins in °c, (2) the fraction of the total mass that has condensed when the pressure decreased to 0.5 bar. (3) the volume in m3 occupied by saturated liquid at the final state?

Answers: 3

Answer

Engineering, 06.07.2019 03:20

What is the strain energy stored in a solid uniformly circular shaft of length 3.0 m and diameter 120 mm when subject to pure torsion if the maximum shear stress is 40 mpa? g-80gpa

Answers: 1

Answer

Engineering, 06.07.2019 03:30

Acubic shaped box has a side length of 1.0 ft and a mass of 10 lbm is sliding on a frictionless horizontal surface towards a 30 upward incline. the horizontal velocity of the box is 20 ft/s. determine how far up the incline the box will travel (report center of mass distance along the inclined surface, not vertical distance)

Answers: 1

Answer

You know the right answer?

In laying water mains, utilities must be concerned with the possibility of freezing during cold peri...

Questions