FLOOD06423

• County: Statewide
• Community: State of Colorado
• Basin: Statewide
• Title: Preparation of Input Data for Automatic Computation of State-Discharge Relations at Culverts
• Date: 1/1/2000
• Prepared By: Matthai, Stull, Davidian
• Floodplain - Doc Type: Educational/Technical/Reference Information

Il refaee ...........................
Abstracl . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inlrodu(;tion . . . .. . . . . . . . . .. . . . . . . . . .. .
Computer program. .. .. . . . . . .. . . . . . . . . .
Basic equations and computation
methods. . .. ~ . . . . . .. . .. . . . . . . . . . . . . . .
Part 1 ............ ..............
Part 2..........................
Part 3 ............:.. ............
Type 1 now...................
Type 2 now.'..................
Type 3 now. . . . . . . . . . . . . . . . . . .
Type 4 now.. . . . .. . . . . . . . . . ...
Type 5 now. . . . . . . . . . . . . . . . . . .
Type 6 flow. -,. . . . . . . .. . . . . . . . . . .
Procedures. . . . . . . . . . . . . . . . . . . . . . . .
Field data. . . . . . . . . . . . . . . . . . . . . . .
Roughness coefficients. .. . .. . . . . . . ..
Coefficients of discharge .........".
Adjustment for degree of con-

traction. . . . . . .. .. . . . . . . . . . . . . . . .
Office computations. . . . .. . . . . . . . . .
Preparation of data. . . . . . . . . . . . . . .
Card 2 - Stream heading card . . .
Card 3 - Approach crosS- section

data....................... .
Card 4 - Subarea roughness
coefficients. . . . . . . . . . . . .. . . . . .
Card 5 - Discharges. . . .. . . . . . . . .
Card 6 - Tailwater elevations. . .

CONTENTS

Page

Hi
1
I
2

2
2
3
3
4
4
5
5
5
6
6
6
6
6

10.
10
10

7
7
7
8

Procedures- Continued
Preparation of data- Continued
Card 7 - Discharge coefficients-
types 1. 2, 3................
Card 8 - Discharge coefficients-
types 4. 5, 6................
Card 9 - Culvert barrel data. . . .
Checking input data. . . . .. . . . . . .
Transmittal . ~ . . . . . . . . . . . . . . . . . . . . .
Computation............ ."...........
Card deck . . . . . . . . . . . . . . . . . . . . . .
Printout. . . . . . . . . . . . . . . . . . . . . . . .
Application of results. . . . . . . . . . . . . . .
Special conditions. . . . .". . . . . . . . . . . . .
Mitered culverts. . .. . . . . . . . . . . . . ..
Culverts with 900 wingwalls . . .. . .
Unusual culvert" entrances. . . . . . . .
Culverts with fillets. .. . . . . . . . . . .
Multiple culverts. .. . . . . . .. . . . . . . .
Nonstandard conditions ..........
Example. . . . . . . . . . . . . . . . . . .. . . . . . . .
Messages. . . . . . . . . . . . . . . . . . . . . . . . .
Systems codes. . . . . . .. . . . . . . . . . . .
Input-card errors................
Edit-directed messages. .. .. . .. .
Numeric- check messages ......
Computational messages.. .. . . . .. . .
References. .. . . . . .. .. .. .... . . .. . . .. . . . . . . .
Symbols and units. . . . . . . . . .. . .. . . . . . .

Page

10

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12
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13
13
13
14
14
14
14
15
15
15
16
16
16
16
16
19
20
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22
23

Page

1. Classification of culvert now. ... . .. . . . . . .. . . . . . . . . . . .. .. . . . . . . . . . . . . . .., . . . . . . . . . . . . vi
2. Data-input form 9-1695, stage-discharge relation at culverts...................... 8
3. Completed data form. . .. . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . ., . . 17
4. Computer printout--properties of approach cross section. .. . .". . . . . . . .. . . . . . . . . .. . . 17
5. Computer printout--properties of culvert barrel:................................... 18
6. Computer printout--discharges, headwater and tailwater elevations, depths, types of
now, and discharge coefficients. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ~ . . 18
7. Stage- discharge relation derived from computer printout (figure 6) .... . . . . . . .. . . . . . . 19

9

FIGURES

TABLE

Page

1. Riveted and multiplate pipe- arch sizes to be used in culvert barrel description. . . . . . . 13

v