(Solved): EXAMPLE 4-6 Minimum Burial Depth of Water Pipes to Avoid Freezing In areas where the air temperature ...

EXAMPLE 4-6 Minimum Burial Depth of Water Pipes to Avoid Freezing In areas where the air temperature remains below

for prolonged periods of time, the freezing of water in underground pipes is a major concern. Fortunately, the soil remains relatively warm during those periods, and it takes weeks for the subfreezing temperatures to reach the water mains in the ground. Thus, the soil effectively serves as an insulation to protect the water from subfreezing temperatures in winter. The ground at a particular location is covered with snow pack at

for a continuous period of three months, and the average soil properties at that location are

and

(Fig. 4-33). Assuming an initial uniform temperature of

for the ground, determine the minimum scnemanc for example 4-0. burial depth to prevent the water pipes from freezing.