Appendix E: Hydrologic & Hydraulic Report. Proposed Bridge Replacement SR 1008, Section 02B (Henry Road) Over Bushkill Creek

Transcription

1 Hydrologic & Hydraulic Report Proposed Bridge Replacement SR 1008, Section 02B (Henry Road) Over Bushkill Creek Appendix E: Existing Conditions Hydraulic Analysis

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3 425 Bushkill Creek Henry Woods WS 500-yr Crit 500-yr WS 50-yr Crit 100-yr WS 10-yr Crit 50-yr Crit 25-yr Crit 10-yr Main Channel Distance (ft)

4 HEC-RAS Plan: Existing River: Bushkill Creek Reach: Henry Woods Reach River Sta Profile Q Total Min Ch El W.S. Elev Crit W.S. E.G. Elev E.G. Slope Vel Chnl Flow Area Top Width Froude # Chl (cfs) (ft) (ft) (ft) (ft) (ft/ft) (ft/s) (sq ft) (ft) Henry Woods yr Henry Woods yr Henry Woods yr Henry Woods yr Henry Woods yr Henry Woods yr Henry Woods yr Henry Woods yr Henry Woods yr Henry Woods yr Henry Woods yr Henry Woods yr Henry Woods yr Henry Woods yr Henry Woods yr Henry Woods yr Henry Woods yr Henry Woods yr Henry Woods yr Henry Woods yr Henry Woods 1523 Bridge Henry Woods yr Henry Woods yr Henry Woods yr Henry Woods yr Henry Woods yr Henry Woods yr Henry Woods yr Henry Woods yr Henry Woods yr Henry Woods yr Henry Woods yr Henry Woods yr

5 HEC-RAS Plan: Existing River: Bushkill Creek Reach: Henry Woods (Continued) Reach River Sta Profile Q Total Min Ch El W.S. Elev Crit W.S. E.G. Elev E.G. Slope Vel Chnl Flow Area Top Width Froude # Chl (cfs) (ft) (ft) (ft) (ft) (ft/ft) (ft/s) (sq ft) (ft) Henry Woods yr Henry Woods yr Henry Woods yr Henry Woods yr Henry Woods yr Henry Woods yr Henry Woods yr Henry Woods yr

6 Hurricane Ivan El ft 500-Year Flood Hurricane Katrina El ft 10-Year Flood 25-Year Flood Roadway Overtopping El ft

7 Cross Section Cross Section

8 Cross Section Cross Section Crit 100-yr Crit 25-yr Ineff

9 Henry Woods Bridge Crit 100-yr Crit 25-yr Ineff Henry Woods Bridge Crit 100-yr Crit 25-yr Ineff

10 Cross Section Crit 100-yr Crit 25-yr Ineff Cross Section 6 Crit 100-yr 430 Crit 25-yr

11 Cross Section Cross Section Crit 100-yr Crit 25-yr

12 HEC-RAS Version May 2005 U.S. Army Corp of Engineers Hydrologic Engineering Center 609 Second Street Davis, California X X XXXXXX XXXX XXXX XX XXXX X X X X X X X X X X X X X X X X X X X XXXXXXX XXXX X XXX XXXX XXXXXX XXXX X X X X X X X X X X X X X X X X X X X X X XXXXXX XXXX X X X X XXXXX PROJECT DATA Project Title: Henry Woods Bridge - Revised Project File : Henry_rev.prj Run Date and Time: 9/12/2006 4:28:37 PM Project in English units PLAN DATA Plan Title: Existing Bridge Conditions Plan File : C:\Henry_rev.p01 Geometry Title: Existing Conditions Geometry File : C:\Henry_rev.g01 Flow Title Flow File : USGS NFF Discharge Data : C:\Henry_rev.f02 Plan Summary Information: Number of: Cross Sections = 8 Multiple Openings = 0 Culverts = 0 Inline Structures = 0 Bridges = 1 Lateral Structures = 0 Computational Information Water surface calculation tolerance = 0.01 Critical depth calculation tolerance = 0.01 Maximum number of iterations = 20 Maximum difference tolerance = 0.3 Flow tolerance factor = Computation Options Critical depth computed only where necessary Conveyance Calculation Method: At breaks in n values only Friction Slope Method: Average Conveyance Computational Flow Regime: Subcritical Flow

13 FLOW DATA Flow Title: USGS NFF Discharge Data Flow File : C:\Henry_rev.f02 Flow Data (cfs) River Reach RS 10-yr 25-yr 50-yr 100-yr 500-yr Bushkill Creek Henry Woods Boundary Conditions River Reach Profile Upstream Downstream Bushkill Creek Henry Woods Normal S = Bushkill Creek Henry Woods Normal S = Bushkill Creek Henry Woods Normal S = Bushkill Creek Henry Woods Normal S = Bushkill Creek Henry Woods Normal S = yr 25-yr 50-yr 100-yr 500-yr GEOMETRY DATA Geometry Title: Existing Conditions Geometry File : C:\Henry_rev.g01 CROSS SECTION RIVER: Bushkill Creek REACH: Henry Woods RS: 2000 INPUT Description: Cross Section 1 Station Elevation Data num= Sta n Val Sta n Val Sta n Val

14 : Left Right Lengths: Left Channel Right Coeff Contr. Expan CROSS SECTION RIVER: Bushkill Creek REACH: Henry Woods RS: 1840 INPUT Description: Cross Section 2 Station Elevation Data num= Sta n Val Sta n Val Sta n Val : Left Right Lengths: Left Channel Right Coeff Contr. Expan CROSS SECTION RIVER: Bushkill Creek REACH: Henry Woods RS: 1645 INPUT Description: Cross Section 3 Station Elevation Data num= Sta n Val Sta n Val Sta n Val : Left Right Lengths: Left Channel Right Coeff Contr. Expan CROSS SECTION RIVER: Bushkill Creek REACH: Henry Woods RS: 1528 INPUT Description: Cross Section 4

15 Station Elevation Data num= Sta n Val Sta n Val Sta n Val : Left Right Lengths: Left Channel Right Coeff Contr. Expan Ineffective Flow num= 2 Sta L Sta R Elev Permanent F F BRIDGE RIVER: Bushkill Creek REACH: Henry Woods RS: 1523 INPUT Description: Henry Woods Bridge Distance from Upstream XS = 5 Deck/Roadway Width = 21 Weir Coefficient = 2.6 Upstream Deck/Roadway Coordinates num= 30 Sta Hi Cord Lo Cord Sta Hi Cord Lo Cord Sta Hi Cord Lo Cord Upstream Bridge Cross Section Data Station Elevation Data num=

16 Sta n Val Sta n Val Sta n Val : Left Right Coeff Contr. Expan Ineffective Flow num= 2 Sta L Sta R Elev Permanent F F Downstream Deck/Roadway Coordinates num= 29 Sta Hi Cord Lo Cord Sta Hi Cord Lo Cord Sta Hi Cord Lo Cord Downstream Bridge Cross Section Data Station Elevation Data num= Sta n Val Sta n Val Sta n Val : Left Right Coeff Contr. Expan Ineffective Flow num= 2 Sta L Sta R Elev Permanent F F Upstream Embankment side slope = 0 horiz. to 1.0 vertical Downstream Embankment side slope = 0 horiz. to 1.0 vertical Maximum allowable submergence for weir flow =.95 Elevation at which weir flow begins = Energy head used in spillway design = Spillway height used in design = Weir crest shape = Broad Crested Number of Bridge Coefficient Sets = 1 Low Flow Methods and Data Energy

17 Selected Low Flow Methods = Highest Energy Answer High Flow Method Pressure and Weir flow Submerged Inlet Cd = Submerged Inlet + Outlet Cd =.8 Max Low Cord = Additional Bridge Parameters Add Friction component to Momentum Do not add Weight component to Momentum Class B flow critical depth computations use critical depth inside the bridge at the upstream end Criteria to check for pressure flow = Upstream energy grade line CROSS SECTION RIVER: Bushkill Creek REACH: Henry Woods RS: 1485 INPUT Description: Cross Section 5 Station Elevation Data num= Sta n Val Sta n Val Sta n Val : Left Right Lengths: Left Channel Right Coeff Contr. Expan Ineffective Flow num= 2 Sta L Sta R Elev Permanent F F CROSS SECTION RIVER: Bushkill Creek REACH: Henry Woods RS: 1295 INPUT Description: Cross Section 6 Station Elevation Data num=

18 Sta n Val Sta n Val Sta n Val : Left Right Lengths: Left Channel Right Coeff Contr. Expan CROSS SECTION RIVER: Bushkill Creek REACH: Henry Woods RS: 1200 INPUT Description: Cross Section 7 Station Elevation Data num= Sta n Val Sta n Val Sta n Val : Left Right Lengths: Left Channel Right Coeff Contr. Expan CROSS SECTION RIVER: Bushkill Creek REACH: Henry Woods RS: 1100 INPUT Description: Cross Section 8 Station Elevation Data num= Sta n Val Sta n Val Sta n Val : Left Right Coeff Contr. Expan SUMMARY OF MANNING'S N VALUES

19 River:Bushkill Creek Reach River Sta. n1 n2 n3 Henry Woods 2000 Henry Woods 1840 Henry Woods 1645 Henry Woods 1528 Henry Woods 1523 Bridge Henry Woods 1485 Henry Woods 1295 Henry Woods 1200 Henry Woods 1100 SUMMARY OF REACH LENGTHS River: Bushkill Creek Reach River Sta. Left Channel Right Henry Woods Henry Woods Henry Woods Henry Woods Henry Woods 1523 Bridge Henry Woods Henry Woods Henry Woods Henry Woods 1100 SUMMARY OF CONTRACTION AND EXPANSION COEFFICIENTS River: Bushkill Creek Reach River Sta. Contr. Expan. Henry Woods Henry Woods Henry Woods Henry Woods Henry Woods 1523 Bridge Henry Woods Henry Woods Henry Woods Henry Woods