Section 5600 Storm Drainage Systems & Facilities

1 Kansas City Metropolitan ChapterAmerican Public Works AssociationStandard Specifications & Design CriteriaSection 5600 Storm Drainage Systems & FacilitiesFebruary 16, 2011 DIVISION V Section 5600 Storm Drainage Systems & Facilities (February 16, 2011) APWA 5600 February 16, 2011 DIVISION V DESIGN CRITERIA 5600 Storm Drainage Systems & Facilities APPROVED AND ADOPTED THIS 15 DAY OF DECEMBER 2010 KANSAS CITY METROPOLITAN CHAPTER OF THE AMERICAN PUBLIC WORKS ASSOCIATION TABLE OF CONTENTS Section Page Section 5601 ADMINISTRATIVE.

2 1 Introduction .. 1 Definitions .. 1 General Requirements and Applicability .. 4 Existing Drainage system .. 4 system Types and Applications .. 4 Waivers .. 7 Other Requirements .. 7 Levels of Service .. 7 Section 5602 HYDROLOGY .. 11 Scope .. 11 Computation Methods for Runoff .. 11 Runoff Coefficients .. 15 Rainfall Mass .. 17 Unit Hydrographs .. 17 Rainfall Intensity .. 17 Time of Concentration and Lag Time .. 18 Hydrograph Routing .. 22 Calibration and Model Verification .. 22 Section 5603 HYDRAULICS.

3 27 Hydraulic Calculations for Pipes, Culverts, and Open Channels .. 27 Analysis of Systems by Computer Models .. 31 Section 5604 INLETS, MANHOLES AND JUNCTION BOXES .. 47 Inlet Design .. 47 Gutter Flow .. 47 Gutter Capacity .. 48 Freeboard Requirements .. 48 Inverts and Pipes .. 48 Loading Conditions for Structures .. 48 Street Grade on Vertical Curves .. 48 Curb Inlet Intercept Equations .. 49 Section 5605 NATURAL STREAMS .. 62 Scope .. 62 Natural Stream Benefits and Characteristics: .. 62 APWA 5600 i February 16, 2011 Stream Preservation and Buffers Zones.

4 64 In Stream Construction - General Requirements .. 65 Stream Assessment .. 65 Discharge Outfalls .. 72 Culverts, Bridges, and Above Grade Crossings .. 72 Below Grade Stream Crossings .. 73 Grade Control .. 73 Floodplain Fills: .. 75 Flood Control Projects: .. 75 Bank Stabilization Projects .. 75 Stream Restoration .. 77 Comprehensive Stream Management: .. 77 Section 5606 ENCLOSED PIPE Systems .. 81 Easements .. 81 Capacity .. 81 Pressure Flow .. 82 Energy Dissipation: .. 82 Velocity within the system .

5 84 Loading .. 84 Section 5607 ENGINEERED CHANNELS .. 85 Introduction .. 85 Easements .. 85 Freeboard .. 85 Channel Linings .. 85 Lining Material .. 85 Side Slopes .. 90 Alignment Changes .. 90 Vertical Wall Channels .. 90 Energy Management .. 90 Section 5608 STORMWATER DETENTION AND RETENTION .. 91 Scope .. 91 Access and Easements .. 91 Maintenance and Continued Performance .. 91 Performance Criteria .. 91 Detention Methods: .. 94 Required Submittals: .. 96 Additional Requirements .. 96 Section 5609 PLAN REQUIREMENTS.

6 97 Scope .. 97 General .. 97 Type of Sheets in Plans .. 97 Sheet Sizes .. 97 Scales .. 97 Required Information for Title Sheet: .. 98 Required Information for General Layout Sheet: .. 98 Required Information for Plan and Profile Sheets: .. 99 Cross- Section Sheets .. 99 Drainage Area Map .. 100 Standard and Special Detail Sheets .. 100 Traffic Control Plans (if required) .. 100 Temporary Erosion Control Plan Sheets .. 100 APWA 5600 ii February 16, 2011 Grading Plan Sheets (if required) .. 100 Property Line and Easement Sheets.

7 100 Section 5610 REFERENCES .. 101 APPENDIX A Microsoft Visual Basic Function for Inlet Interception Calculations * * * * * LIST OF FIGURES Figure Page Figure 5601-1: Guide to Stormwater Management for Site Developmet .. 10 Figure 5602-1: Intensity-Duration-Frequency (IDF) Curves for Kansas City, Missouri .. 19 Figure 5602-2: Overland Flow (Inlet) Time Nomograph .. 20 Figure 5602-3: Channel Flow Time Nomograph .. 21 Figure 5602-4: 100-year Discharge per Kansas Rural Regression Formula (2000) and Gage Estimates .. 23 Figure 5602-5: 100-year Discharge per Missouri Rural Regression Formula and Gage Estimates.

8 24 Figure 5602-6: Documented Extreme Streamflows (no return period estimates) in Kansas City and the Region, as Discharges per Unit Drainage Area .. 25 Figure 5602-7: Documented Extreme Streamflows (no return period estimated) in Kansas City and the Region, as Absolute Discharges .. 26 Figure 5603-1: Headwater Depth for Box Culverts with Inlet Control .. 33 Figure 5603-2: Headwater Depth for Concrete Pipe Culverts with Inlet Control .. 34 Figure 5603-3: Headwater Depth for Oval Concrete Pipe Culverts, Long Axis Horizontal with Inlet Control.

9 35 Figure 5603-4: Headwater Depth for Oval Concrete Pipe Culverts, Long Axis Vertical with Inlet Control .. 36 Figure 5603-5: Headwater Depth for Corrugated Metal Pipe Culverts with Inlet Control .. 37 Figure 5603-6: Headwater Depth for Corrugate Metal Pipe Arch Culvert with Inlet 38 Figure 5603-7: Headwater Depth for Circular Pipe Culverts with Beveled Ring Inlet Control .. 39 Figure 5603-8: Head for Concrete Pipe Culverts Flowing Full (n= ) .. 40 Figure 5603-9: Head for Concrete Box Culverts Flowing Full (n= ) .. 41 Figure 5603-10: Head for Oval Concrete Pipe Culverts, Long Axis Horizontal or Vertical Flowing Full (n= ).

10 42 Figure 5603-11: Head for Standard Corrugate Metal Pipe Culverts Flowing Full (n= ) .. 43 Figure 5603-12: Head for Standard Corrugated Metal Pipe-Arch Culverts Flowing Full (n= ) .. 44 Figure 5603-13: Head for Structural Plate Corrugated Metal Pipe Culverts Flowing Full (n= to ) .. 45 Figure 5603-14: Head for Structural Plate Corrugated Metal Pipe Arch Culverts, 18 inch Corner Radius, Flowing Full (n= to ) .. 46 Figure 5604-1: Curb Inlet (10 Throat) Minimum Hydraulic Dimensions .. 50 Figure 5604-2: Type CG-1 Curb, Sx=2%, So=.