Lindsay Anne Estatees e Flow Analysis · A model of the proposed water system was created utilizing...

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TABLE OF CONTENTS PURPOSE OF REPORT PROJECT LOCATION/DESCRIPTION REGULATORY DESIGN CRITERIA

CALCULATION METHODOLOGY RESULTS APPENDIX 1-0 PRELIMINARY WATER PLAN APPENDIX 2-0 HYDRANT FLOW CURVE REPORT APPENDIX 3-0 EXISTING FLOW TEST DATA

1

LINDSAY ANNE ESTATES FIRE FLOW ANALYSIS

PURPOSE OF REPORT The purpose of this report is to analyze the water system and ensure that there are sufficient volumes of water at adequate pressures to satisfy maximum expected consumption plus fire flows for the proposed development. This report documents the criteria for which the water system for this site is designed to meet, the sources of information on which the analysis is based, the calculation methodology, and the results of the analysis.

PROJECT LOCATION/DESCRIPTION

The proposed development is located on Tax Lot 1300, Clackamas County Map 3 2E 18. The project site is located at 19799 Leland Road in City of Oregon City. The existing site area is approximately 6.77 acres.

REGULATORY DESIGN CRITERIA

Per Section B105.1 of the 2006 International Fire Code, the site shall provide water pressure of 20 psi or a flow rate of 1000 gpm during a fire event.

CALCULATION METHODOLOGY

A model of the proposed water system was created utilizing Bentley’s WaterCAD software.

Existing pressure and available flow were determined through field hydrant test data from an existing hydrant at the east side of Leland Road (across from 19871 Leland Road). The test indicated a static pressure of 66 psi and a residual pressure of 58 psi at flow of 1,230 gpm. This information was utilized in the WaterCAD model to simulate a connection to the existing 12” water main in Leland Road through the use of reservoir and pump nodes.

Hydrant nodes were placed throughout the WaterCAD model. The fire flow analysis parameters were set within the model to require a fire flow of 1,000 gpm with a residual system-wide pressure of at least 20 psi. The analysis is a steady state analysis since the demands are based on peak hour demands, not normal demands.

RESULTS

The results of the analysis indicate that at any of the proposed hydrant locations or junctions, the minimum fire flow is available while still providing a system-wide residual pressure of 20 psi. The flow is approximately 1,936 gpm at junction H-2, located at the intersection of proposed Lindsay Anne Lane and Cedarwood Way. This exceeds the requirements of Section B105.1 of the 2006 International Fire Code; therefore the fire flow requirements for this subdivision are met.

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Page 1 of 127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666

9/5/2013

Bentley WaterCAD V8i (SELECTseries 3)[08.11.03.17]

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Project Inventory: 3589 FIREFLOW 2.wtg

Lindsay Anne EstatesTitleVNEngineerAKS EngineeringCompany9/5/2013Date

Notes

Scenario Summary

1IDBaseLabel

NotesBase Active TopologyActive TopologyBase PhysicalPhysicalBase DemandDemandBase Initial SettingsInitial SettingsBase OperationalOperationalBase AgeAgeBase ConstituentConstituentBase TraceTraceBase Fire FlowFire FlowBase FlushingFlushingBase Energy CostEnergy CostBase TransientTransientBase Pressure Dependent DemandPressure Dependent DemandBase Failure HistoryFailure HistoryBase User Data ExtensionsUser Data Extensions

Base Calculation OptionsSteady State/EPS Solver Calculation Options

Base Calculation OptionsTransient Solver Calculation Options

Network Inventory

15Pipes 1-Constant Speed - No Pump Curve

11Junctions 0-Constant Speed - Pump Curve

3Hydrants 0-Shut Down After Time Delay0Tanks 0-Variable Speed/Torque0-Circular 0-Pump Start - Variable

Speed/Torque0-Non-Circular 0Variable Speed Pump

Batteries0-Variable Area 0Pump Stations1Reservoirs 0PRV's1Pumps 0PSV's0-Constant Power 0PBV's0-Custom Extended 0FCV's0-Design Point (1 Point) 0TCV's0-Multiple Point 0GPV's1-Standard (3 Point) 0Isolation Valves0-Standard Extended 0Spot Elevations

Transient Network Inventory


9/5/2013



Project Inventory: 3589 FIREFLOW 2.wtg

Transient Network Inventory

0Air Valves 0Rupture Disks0-Double Acting 0Surge Valves0-Slow Closing 0Surge Tanks0-Triple Acting 0-Simple0-Vacuum Breaker 0-Differential0Discharges to Atmosphere 0-Variable Area0Orifice 0Turbines0Rating Curve 0Valves With Linear Area

Change0Valve 0Periodic Head-Flows0Check Valves 0-Sinusoidal (Head)0-Towards Wye 0-Not Sinusoidal (Head)0-Away from Wye 0-Sinusoidal (Flow)0Hydropneumatic Tanks 0-Not Sinusoidal (Flow)0Orifices Between Pipes

Pressure Pipes Inventory

ft996.0 (in) ft8224.0 (in)ft1,4008.0 (in) ft2,606All Diametersft1,02612.0 (in)


9/5/2013



Hydrant Flow Curve Detailed Report - Hydrant Flow Curve - 9

Element Details

Hydrant Flow Curve - 9Label gpm1,000Nominal Hydrant Flow

H-2Hydrant/Junction 10Number of Intervals

Time(hours)

0.000

0.000 hoursPressure

(psi)

0.000 hoursFlow

(gpm)

65.8065.610065.120064.330063.240062.050060.560058.770056.880054.690052.21,00049.61,10046.81,20043.81,30040.61,40037.21,50033.61,60029.81,70025.81,80021.61,90017.22,00012.72,1008.02,2003.02,3000.02,359


9/5/2013



Hydrant Flow Curve Detailed Report - Hydrant Flow Curve - 9

Hydrant Flow Curve - 9

Pres

sure

(ps

i)

75.0

68.8

62.5

56.3

50.0

43.8

37.5

31.3

25.0

18.8

12.5

6.3

0.0

Flow (gpm)2,0001,5001,0005000


9/5/2013



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Lindsay Anne Estatees e Flow Analysis · A model of the proposed water system was created utilizing...

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