Utilities II - EN03890001
Utilities II - Continued
Introduction - EN03890003
Lesson 1. Electric Power Systems
Frequency
Constant Potential Systems
Figure 5. 12W 120V system.
Three Phase
Generators
Generator Selection
Table 1. Connected Loads for Military Structures
Table 2. Demand Factors for Military Installations
Table 3. Generator Factors
Generators Available
Table 4. Family of Engine-Generators
Generator Location
Substations
First requirement
Figure 10. For use with exercise 2.
Second requirement
Figure 11. For use with exercise 17.
Fifth requirement
Lesson 2. Electrical Distribution Systems
Figure 1. Typical high-voltage power system.
Figure 2. Ring system.
Distribution System Balancing
Balancing Single-Phase Systems
Solution - EN03890029
Phase Balance
Table 1. KVA Load-Carrying Capacity of Wire1
Figure 6. Line voltage drop.
Figure 7. Voltage drop and wire size chart for single phase, two-wire, 120-volt system.
Figure 8. Voltage drop and wire size chart
Figure 9. Voltage drop and wire size chart for three-phase, four-wire, 127/220 volt system.
Pole Selection
Table 2. Height and Class of Poles
Figure 10. National Electric Safety Code (NESC) minimum clearances.
Table 5. Line Wire Sag in Inches
Figure 12. Sag for one-half ultimate strength of bare hard-drawn copper conductors
Sag determination.
Figure 15. Wiring layout.
System Design
Load estimation - EN03890045
Branch line design
Exercises - EN03890047
Situation
Figure 19. Building layout for exercises 14 thorough 20.
Figure 20. Distribution layout for exercises 14 through 20.
Figure 21. For use with exercise 18.
Figure 22. For use with exercise 19.
Fifth requirement
Lesson 3. Water Distribution Systems
Figure 1. Direct intake with hose on bottom of water source.
Figure 2. Surface intake with hose buried in gravel-filled pit.
Figure 5. Baffle dam for protecting inlet strainer.
Figure 7. Gravel-filled gallery intake.
Inland Surface Water Sources
Springs
Rainwater
Evaluation of Sources
Table 2. Evaluation of Water Sources
Storage - EN03890064
Figure 10. Layout of a combination water system.
Fluid Fundamentals
Distribution System Design
Check for Excess Pressure - EN03890068
Figure 13. Nomograph for total peak water demands.
Pipe Size and Actual Headloss
Figure 14. Nomograph for determining pipe flow, friction loss, and velocity.
Figure 15. Nomograph for calculating pipe size, discharge, and head loss.
System Design Problem
Check for Excess Pressure - EN03890074
Sample Problem Allowable Headloss
Storage - EN03890076
Exercises - EN03890077
Exercises - Continued - EN03890078
Exercises - Continued - EN03890079
Lesson 4. Sewage Collection and Disposal
Characteristics of Sewage
Primary Treatment
Capacities.
Figure 3. Imhoff tank.
Drying beds without drains
Secondary Treatment
Figure 6. Cesspool.
Figure 7. Dosing tank.
Figure 8. Trickling filter.
Operation.
Figure 9. Oxidation pond.
Complete Treatment
Sewage Collection Systems
Building connections.
Figure 12. Sewerage system worksheet.
Sewer Layout Determination
Manhole Location
Slope Determination
Actual Velocity
Sample Design Problem
Figure 17. Sanitary system data sheet.
Figure 18. Sample design solution (issued as separate item).
Sample Design Problem - Continued
Exercises - EN03890104
Exercises - Continued - EN03890106
Correspondence Course of U.S. Army Engineer School - EN03890107
Table 1D. Solution to exercise 13.
Discussion - EN03890109
Correspondence Course of U.S. Army Engineer School - EN03890110
Discussion - EN03890111
Discussion - Continued - EN03890112
Table 1D. Solution to Exercise 18
Discussion - Continued - EN03890114
Correspondence Course of U.S. Army Engineer School - EN03890115
Discussion - EN03890116
Discussion - Continued - EN03890117
Correspondence Course of U.S. Army Engineer School - EN03890118
Discussion - EN03890119
Image
Figure 14. Les 4 Subcourse
Figure 14. Les 4 Subcourse - Continued - EN03890122
Figure 14. Les 4 Subcourse - Continued - EN03890123
Figure 16. Les 4 Subcourse
Figure 16. Les 4 Subcourse - Continued
Figure 16. Les 4 Subcourse - Continued
Figure 18. Les 4 Subcourse
Utilities II
Utilities II - Continued
Introduction - EN03890003
Lesson 1. Electric Power Systems
Frequency
Constant Potential Systems
Figure 5. 12W 120V system.
Three Phase
Generators
Generator Selection
Table 1. Connected Loads for Military Structures
Table 2. Demand Factors for Military Installations
Table 3. Generator Factors
Generators Available
Table 4. Family of Engine-Generators
Generator Location
Substations
First requirement
Figure 10. For use with exercise 2.
Second requirement
Figure 11. For use with exercise 17.
Fifth requirement
Lesson 2. Electrical Distribution Systems
Figure 1. Typical high-voltage power system.
Figure 2. Ring system.
Distribution System Balancing
Balancing Single-Phase Systems
Solution - EN03890029
Phase Balance
Table 1. KVA Load-Carrying Capacity of Wire1
Figure 6. Line voltage drop.
Figure 7. Voltage drop and wire size chart for single phase, two-wire, 120-volt system.
Figure 8. Voltage drop and wire size chart
Figure 9. Voltage drop and wire size chart for three-phase, four-wire, 127/220 volt system.
Pole Selection
Table 2. Height and Class of Poles
Figure 10. National Electric Safety Code (NESC) minimum clearances.
Table 5. Line Wire Sag in Inches
Figure 12. Sag for one-half ultimate strength of bare hard-drawn copper conductors
Sag determination.
Figure 15. Wiring layout.
System Design
Load estimation - EN03890045
Branch line design
Exercises - EN03890047
Situation
Figure 19. Building layout for exercises 14 thorough 20.
Figure 20. Distribution layout for exercises 14 through 20.
Figure 21. For use with exercise 18.
Figure 22. For use with exercise 19.
Fifth requirement
Lesson 3. Water Distribution Systems
Figure 1. Direct intake with hose on bottom of water source.
Figure 2. Surface intake with hose buried in gravel-filled pit.
Figure 5. Baffle dam for protecting inlet strainer.
Figure 7. Gravel-filled gallery intake.
Inland Surface Water Sources
Springs
Rainwater
Evaluation of Sources
Table 2. Evaluation of Water Sources
Storage - EN03890064
Figure 10. Layout of a combination water system.
Fluid Fundamentals
Distribution System Design
Check for Excess Pressure - EN03890068
Figure 13. Nomograph for total peak water demands.
Pipe Size and Actual Headloss
Figure 14. Nomograph for determining pipe flow, friction loss, and velocity.
Figure 15. Nomograph for calculating pipe size, discharge, and head loss.
System Design Problem
Check for Excess Pressure - EN03890074
Sample Problem Allowable Headloss
Storage - EN03890076
Exercises - EN03890077
Exercises - Continued - EN03890078
Exercises - Continued - EN03890079
Lesson 4. Sewage Collection and Disposal
Characteristics of Sewage
Primary Treatment
Capacities.
Figure 3. Imhoff tank.
Drying beds without drains
Secondary Treatment
Figure 6. Cesspool.
Figure 7. Dosing tank.
Figure 8. Trickling filter.
Operation.
Figure 9. Oxidation pond.
Complete Treatment
Sewage Collection Systems
Building connections.
Figure 12. Sewerage system worksheet.
Sewer Layout Determination
Manhole Location
Slope Determination
Actual Velocity
Sample Design Problem
Figure 17. Sanitary system data sheet.
Figure 18. Sample design solution (issued as separate item).
Sample Design Problem - Continued
Exercises - EN03890104
Exercises - Continued - EN03890106
Correspondence Course of U.S. Army Engineer School - EN03890107
Table 1D. Solution to exercise 13.
Discussion - EN03890109
Correspondence Course of U.S. Army Engineer School - EN03890110
Discussion - EN03890111
Discussion - Continued - EN03890112
Table 1D. Solution to Exercise 18
Discussion - Continued - EN03890114
Correspondence Course of U.S. Army Engineer School - EN03890115
Discussion - EN03890116
Discussion - Continued - EN03890117
Correspondence Course of U.S. Army Engineer School - EN03890118
Discussion - EN03890119
Image
Figure 14. Les 4 Subcourse
Figure 14. Les 4 Subcourse - Continued - EN03890122
Figure 14. Les 4 Subcourse - Continued - EN03890123
Figure 16. Les 4 Subcourse
Figure 16. Les 4 Subcourse - Continued
Figure 16. Les 4 Subcourse - Continued
Figure 18. Les 4 Subcourse
Utilities II
