Purpose and scope.

Rainfall.

Figure 1. Design Storm Index 1 Hour Rainfall Intensity-Frequency Data

Figure 2. Standard Rainfall Intensity-Duration Curves or Standard Supply Curves

Rate of supply

Figure 3. Rates of Runoff and Rates of Supply Corresponding to Standard Supply Curves

Design procedures for the drainage system.

Storm-drain layout.

Typical design procedures.

Appendix B: Design Procedure

Figure B-1. Diagram For Estimating 2-Year 1-Hour Rainfall

Effective length.

Figure B-2. Rates of Runoff Versus Duration of Supply for Turfed Areas

Figure B-3. Rates of Runoff Versus Duration of Supply for Turfed Areas

Figure B-4. Rates of Runoff Versus Duration of Supply for Turfed Areas

Figure B-5. Computation of Hydrograph to Represent Runoff From Supply of Specified Duration

Figure B-6. Modification in L Required to Compensate For Differences in N and S

Table B-2. Coefficients of Roughness for Overland Flow

Figure B-7. Rates of Runoff Corresponding to Supply Curves No. 0.4 and 0.6

Figure B-8. Rates of Runoff Corresponding to Supply Curves No. 0.8 and 1.0

Figure B-9. Rates of Runoff Corresponding to Supply Curves No. 1.2 and 1.4

Figure B-10. Rates of Runoff Corresponding to Supply Curves No. 1.6 and 1.8

Figure B-11. Rates of Runoff Corresponding to Supply Curves No. 2.0 and 2.2

Figure B-12. Rates of Runoff Corresponding to Supply Curves No. 2.4 and 2.6

Figure B-13. Rates of Runoff Corresponding to Supply Curves No. 2.8 and 3.0

Figure B-14. Rates of Runoff Corresponding to Supply Curves No. 3.2 and 3.4

Table B-3. Rates of Runoff Corresponding to Intensites and Durations of Supply Represented

Figure B-15. Consolidated Design Curve Composite of Peak Runoff Rates and Critical Durations

Storage.

Figure B-16. Sample Computations of Storage Required With Selected Drain-Inlet Capacity

Table B-4. Design example.

Figure B-17. Drain-Inlet Capacity Versus Maximum Surface Storage L = 0 and 40 Feet

Figure B-18. Drain-Inlet Capacity Versus Maximum Surface Storage L = 100 and 200 Feet

Figure B-19. Drain-Inlet Capacity Versus Maximum Surface Storage L = 300 and 400 Feet

Figure B-20. Drain-Inlet Capacity Versus Maximum Surface Storage L = 600 and 800 Feet

Figure B-21. Drain-Inlet Capacity Versus Maximum Surface Storage L = 1,000 and 1,200 Feet

Drain-inlet and drain capacities.

Figure B-22. Nomograph for Computing Required Size of Circular Drain Smooth Interior, Flowing Full, n = 0.012

Figure B-23. Nomograph for Computing Required Size of Circular Standard Corrugated

Figure B-24. Nomograph For Computing Required Size of Circular Standard

Figure B-25. Nomograph For Computing Required Size of Circular Structural Plate Pipe

Appendix C: Design Example

Figure C-1. Sample Computations of Layout of Primary Storm Drainage System

Table C-1. Airfield Drainage Drain-Inlet Capacities Required To Limit Ponding to Permissible Volumes

Table C-1. Airfield Drainage Drain-Inlet Capacities Required To Limit Ponding to Permissible Volumes - Continued - ufc_3_230_15fa0053

Table C-1. Airfield Drainage Drain-Inlet Capacities Required To Limit Ponding to Permissible Volumes - Continued - ufc_3_230_15fa0054

Table C-1. Airfield Drainage Drain-Inlet Capacities Required To Limit Ponding to Permissible Volumes - Continued - ufc_3_230_15fa0055

Table C-2. Airfield Drainage Size and Profile of Underground Storm Drains

Table C-2. Airfield Drainage Size and Profile of Underground Storm Drains - Continued - ufc_3_230_15fa0057

Table C-2. Airfield Drainage Size and Profile of Underground Storm Drains - Continued - ufc_3_230_15fa0058

Table C-3. Hydraulic Design Data on Underground Storm Drains Where Ponding is Permissible

Table C-3. Hydraulic Design Data on Underground Storm Drains Where Ponding is Permissible - Continued - ufc_3_230_15fa0060

Table C-3. Hydraulic Design Data on Underground Storm Drains Where Ponding is Permissible - Continued - ufc_3_230_15fa0061

Table C-3. Hydraulic Design Data on Underground Storm Drains Where Ponding is Permissible - Continued - ufc_3_230_15fa0062

Table C-3. Hydraulic Design Data on Underground Storm Drains Where Ponding is Permissible - Continued - ufc_3_230_15fa0063

Table C-4. Airfield Drainage Drain-Inlet Capacities Required to Limit Ponding to Permissible

Table C-4. Airfield Drainage Drain-Inlet Capacities Required to Limit Ponding to Permissible - Continued

Table C-5. Airfield Drainage Size and Profile of Underground Storm Drains

Table C-5. Airfield Drainage Size and Profile of Underground Storm Drains - Continued

Table C-6. Hydraulic Design Data On Underground Storm Drains Where Ponding is not Acceptable

Table C-6. Hydraulic Design Data On Underground Storm Drains Where Ponding is not Acceptable - Continued

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