FLOOD01910

• County: Larimer
• Community: Fort Collins
• Stream Name: Spring Creek
• Title: Technical Addendum to Hydraulic Evaluation of the Centre Avenue Cridge at Spring Creek
• Date: 11/22/2000
• Prepared For: Fort Collins
• Prepared By: Anderson Consulting Engineers, Inc.
• Floodplain - Doc Type: Floodplain Report/Masterplan

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Centre Avenue Extensions
Extran Modeling. Culvert Information

fl!.ls,ting"sYSlem

Pipe Conveyance Elements

3010
30\9
3011
'!o~1
.:l/~O
!lo03

Deplh or Pipe Invert Elev Connecting Node (Pipe. Node) love' I Elev Equivalent
Pipe Diameter WIdth UfS 0/5 U1S 0/5 Length Hyd Rad Slope Mannings losses Mannings
No, Malerial (feel) (feel) In Qui Node 1 Node 2 lPI lP2 (feel) (N) ('Uft) 'n' k_enl k_form k exil 'n'
.- 1---<><>- 0---
..........- RCP 70 498005 4979,50 ?O.2<Y 1/...,.- \45 155 978 \75 o 0056 0013 050 000 100 0.0358
"'" RCP 70 498015 497950 IJIg' 1/% 000 155 978 175 o 0066 0013 050 000 100 0,0358
~ RCP 70 m 497860 4977 95 ;0->0 1'% 000 000 978 175 o 0066 0013 050 000 100 0,0358
~ RCP 30 497900 497805 ~" 2'tr JI }l 040 000 875 0'15 00109 0013 050 000 027 0.0194
...... RCP 35 m 497805 4977 99 ~I M ~u )"f 000 000 240 088 00025 0013 027 000 0,04 00231
......- RCP 40 4971 99 497200 ~O }-f' JJ<J' 000 070 9000 100 0.0067 0,013 0,04 000 100 0.0144

Noles'

(1) Junction Loss at node 12' 64 degree hend wilh shaping k_bend'" 0 54
Junction Loss al node 11 19 degree bend assume shaping k_bend = 007
(2) Shaded equivalenl roughness values were modified 10 simulate exisllng SWMM rating curve at ANRR
(3) ZP1 and ZP2 cards are required by EXTRAN model, and is the difference between the invert 01 the pIpe and
Ihe invelt of the node

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