1986-10-07_PERMIT FILE - C1981008A

• Permit No: C1981008A
• IBM Index Class Name: PERMIT FILE
• Doc Date: 10/7/1986
• Doc Name: Dodson & Associates Hydraulic Programs TRAP PIPE
• Section_Exhibit Name: Tab 13 Attachment J
• Media Type: D
• Archive: Yes

TABLE OF CONTENTS
1. Values of Manning's Roughness Coefficient . . . . . . . . . . . 79
a. Sources of Information for Manning's Roughness Coefficients 79
b. Values of Manning's 'n' for Excavated or Dredged Channels . 79
c. Values of Manning's 'n' for Lined or Built-Up Channels . . . 80
d. Values of 'n' for Closed Conduits Flowing Partly Full . . . . 81
e. Values of Manning's 'n' for Corrugated Metal Pipe . . . . . . 82
2. Entrance Loss Coefficient . . . . . . . . . . . . . . . . . . . 83
a. Purpose of Entrance Loss Coefficient . . . . . . . . . . . . 83
b. Values of Entrance Loss Coefficient for Box Culverts . . . . 83
c. Values of Entrance Loss Coefficient for Pipe Culverts . . . . 83
3. Values for SCS Curve Number . . . . . . . . . . . . . . . . . . 84
a. Values of SCS Curve Number for Urban and Suburban Areas . . . 84
b. Values of SCS Curve Number for Rural Areas . . . . . . . . . 85
C. FEDERAL HIGHWAY ADMINISTRATION CULVERT CHARTS . . . . . . . . . . . 87
D. EXAMPLE HEC-2 COMPUTER OUTPUT . . . . . . . . . . . . . . . . . . . 103
E. INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
DODSON & ASSOCIATES, INC. THE DODSON HYDRAULICS LIBRARY