Chapter 4 Review

  1. A cylindrical water storage tank 90 feet in diameter is equipped with a sight glass to monitor the water depth in the tank. When full, the water in the tank is 38 feet deep. When the sight glass shows a piezometric surface of 29 feet, how many gallons of water are in the tank?
  2. Fill in the blanks to best explain the different levels of the piezometric surfaces in the diagram.
  3. In the figure, pressure gauge readings along a water line are shown in pounds per square inch gauge. From this information, locate and draw the HGL.
  4. Determine the head at points A and B in the following scenarios:
  5. Refer to the diagram of a simple water transmission system and answer the following:
    • With all valves open, the pressure head at gauge 3 is easily read off the gauge (16 psig). Calculate the pressure head in pounds per square inch gauge on valve 3 when valve 3 is closed and all the other valves are open.
    • If the valves 1, 2, and 3 are closed simultaneously (which could be done by remote control), what is the static pressure head in pounds per square inch gauge on each valve?File not found: /var/www/html/learnh2o-prod/web/../../../../../../../mnt/schwebdev/shared/learnh2o-simplyxml/Courses/06116 Basic Hydraulics/06116 05 Head and Head Loss.dita_image24 2.jpg
  6. In the workbook, you worked a head loss problem with a flow rate of 500,000 gpd to a treatment plant. Increase the flow rate to 1.0 mgd and compare the total friction head loss relationship with the example.