Las Delicias Water Project: Piping System Design

Las Delicias Water Project:Piping System DesignEWB-MAPCompiled by: Richard CairncrossDate 1/12/2012Update: 2/2/2012

Map of Current Water System (section relevant for EWB-MAP modifications)RED lines supply lines to tank (uphill by pump)BLUE lines distributions lines by gravityDOWNHILL

Proposed update to Water System (section relevant for EWB-MAP modifications)RED lines supply lines to tank (uphill by pump)BLUE lines distributions lines by gravityNEW SUPPLY LINE 1NEW DISTRIBUTION LINE 2cNEW DISTRIBUTION LINE 2aNEW DISTRIBUTION LINE 2bNEW TANKABCDEFDOWNHILLPiping System LayoutNew PipelinesSupply Line 1 to new tank (A-B-C)Length = 365 m + tank connection (assume + 10 m) = 375 m1 bend, 1 tee, 3 elbow, 2 valves, 1 exit17 m elevation rise + tank heightHill rises to 643 m then valley falls t0 640 m on connecting road (D-B)~175 gpm flowrateDistribution line connection 2a from lower Tramo 3b to lower Tramo 6 (E-F)105 m length, elevation change unclear, guess 10 m dropDistribution connection 2b from upper Tramo 3b to upper Tramo 6 (B-D)120 m length, 8 meter drop with low point at 640 m (3 m below D)Distribution line 2c from new tank to new connections (C-B-E)255 m length, 11 meter elevation dropWaypointsPointLocationElevationACalle Principal638 mBIntersection at Field651 mCNew tank 655 mDEnd of upper Tramo 6643 mEEnd of lower Tramo 3b640 mFEnd of lower Tramo 6?? Guess 630 m

Proposed update to Water System (section relevant for EWB-MAP modifications)RED lines supply lines to tank (uphill by pump)BLUE lines distributions lines by gravityNEW SUPPLY LINE 1NEW TANKABC105 m20 m240 mDOWNHILLEstimate of head losses in supply pipe 1 (smooth PVC)4 PVC sufficient to keep major and minor losses to >10% of the elevation change

Assumptions for Supply Pipe 1 Calculation

Supply Pipe 1 Pipe Profile(not to scale)

NEW TANKABC105 m20 m240 mD638 m640 m643 m651 mElevation:640 m655 mTee connect to 6 pipeGate Valve45 Elbow90 ElbowGate Valve90 Elbow90 ElbowPipe ExitPIPE FITTINGSSupply Pipe 1 TrenchingBased on recommendations from EWB Water Resource Guidelines:45 cm trench depth10 cm bedding (2-12 mm soil) if stones/rocks present in trenchBack-fill with soil that is free of lumps, from stones (>3 cm), and from organic matterPVC pipe joined in trench and cure for >10 hr prior to pressurizing. Keep joints exposed to check for leaksFor road crossing, bury PVC pipe inside steel or concrete pipe (ID > diameter of PVC joints) and bury at same depth as standard trench45 cm trench depth10 cm beddingValve BoxesObtain pre-cast valve boxes with lockable lids locally Or find company locally who can make them

Specifications4 Pipe centered about 35 cm below ground levelBox should extend 10 cm above ground levelInternal dimensions roughly 45cmx45cmPlace support under valve

Thrust Anchors for Elbows &Tees

From Russ Turner, TetratechThrust Anchor Dimensions

Based on 4 PVC PIPE 45 cm Trench Depth

Height of Anchor 22.5 cm

Length of Anchor Backing against undisturbed material: 90 BEND: L = 83 cm 45 BEND: L = 41 cm Tee: L = 41 cmReaction Backing (Thrust Anchor) for turns in Supply Pipe 1

From Michael SwankReaction Backing

Reaction Backing

Reaction Backing for Tee

Supply Pipe 1 Materials List4 PVC pipe (Schedule 40) in 6 m lengths 62 pieces4 PVC 45 Elbow 1 piece4 PVC 90 Elbow 1 pieceTee connector & Adapter from 6 PVC main to 4 branch line 1 piecePVC primer, PVC cement, applicators, and cleanupGate/Ball valves (PVC or steel ?) 2 pieces4 Steel Pipe (5 m) 1 piece4 Steel 90 Elbow 2 pieces4 PVC-Steel Pipe Connector 1 pieceBed material for trench (2-12 mm), if necessaryFill material, if necessaryConcrete for Anchoring Piping at BendsConcrete/Rebar for Valve boxes and lidsTools for cutting, de-burring, connecting pipeEPA-NET Simulation for Supply Line 1 Matches Excel Calculations

DOWNHILLQuestions about Supply Pipe 1Depth of trench for buried pipeAlong side of roadRoad crossingWhat is situation for connection to existing pipingFor supply pipe at point A (Evaluate during May 2012 trip and make connection if possible)For distribution pipe at points D and BFor distribution pipe at points E and FDesign of valve boxesDetails of connection from pipeline to tank (Lisa and Brian)Prices of available PVC pipe in ESNeed for an air bleed at high-point between points A-DNeed for expansion fittings to accommodate settlement where, how?Design of Distribution lines 2a, 2b, 2cSee following map of community and assessment of change in number of homes served by tanks in current and proposed water systemDuring implementation trip will connect Tramo 6 to Tramo 3b (points D-B) in same trench as new supply pipe and gather data about flowrates supplied to homes from new tankPlan to use EPANet software to model distribution to households and assess needs for pipe sizes after gathering flowrate data supplied by new tank

DOWNHILLSummary of Existing Water System

Modified water system

Summary of changes in water distribution systemCURRENT SYSTEMStorageTanque 1: 35,000 galTanque 2: 11,000 galTanque 3: 25,000 galPump supplies water to Tanques 1 & 3 at 175 gpm, ~3 days per weekSpring supplies water to Tanque 2 (and other tanques)Homes serviced by Tanques29133260PROPOSED MODIFICATIONStorageTanque 1: 35,000 galTanque 2: 11,000 galTanque 3: 25,000 galNew Tank: 28,600 galOld Pump supplies water to Tanques 1 & 3 at 175 gpmNew pump supplies water to new tank at 175 gpm with much lower headHomes serviced by Tanques15433117New: 280

New tank reduces demand of water from Tanques 1&2 (which require high head) by roughly 50%

260 Homes Served by Tanque 3 33 Homes Served by Tanque 2291 Homes Served by Tanque 1Current Water Distribution SystemDOWNHILL

117 Homes Served by Tanque 3

33 Homes Served by Tanque 2154 Homes Served by Tanque 1Proposed Water Distribution System280 Homes Served by New TankDOWNHILLSupply Line 1Las Delicias Water ProjectEstimations of head required for pumping water between water main on Calle Principal and new proposed storage tankAssumptionsFlow175gallons/minFlow0.011m3/shttp://www.engineeringtoolbox.com/flow-units-converter-d_405.htmlmu0.001Ns/m2http://www.engineeringtoolbox.com/water-dynamic-kinematic-viscosity-d_596.htmlrho1000kg/m3roughness0Length375msum K_L fittings12.48conservative estimate: 5 90 elbow, 1 45 elbow, pipe exit, 2 open valvesPump-to-Tank Elevation Change77mItem1"1-1/4"1-1/2"2"2-1/2"3"3-1/2"4"D_pipe (in)1.0291.361.592.0472.4453.0423.5213.998D_pipe (m)0.0260.0350.0400.0520.0620.0770.0890.102A (m^2)5.37E-049.37E-041.28E-032.12E-033.03E-034.69E-036.28E-038.10E-03A (cm^2)5.379.3712.8121.2330.2946.8962.8280.99V (m/s)20.5011.748.595.183.632.351.751.36Re5.36E+054.05E+053.47E+052.69E+052.26E+051.81E+051.57E+051.38E+05Turbulentf0.01170.01250.01300.01390.01450.01530.01590.0164Blasius formula (estimates low for this Re)

h_L major (m)3593.8955.5454.9137.058.920.910.45.7h_L minor (m)267.787.747.017.18.43.52.01.2h_L major (% of z) 4667.3%1240.9%590.8%177.9%76.5%27.1%13.5%7.4%based on pump-to-tank elevationh_L minor (% of z)347.6%113.9%61.0%22.2%10.9%4.6%2.5%1.5%

Sheet2

Sheet3

Supply Line 1Las Delicias Water ProjectEstimations of head required for pumping water between water main on Calle Principal and new proposed storage tankAssumptionsFlow175gallons/minFlow0.011m3/shttp://www.engineeringtoolbox.com/flow-units-converter-d_405.htmlmu0.001Ns/m2http://www.engineeringtoolbox.com/water-dynamic-kinematic-viscosity-d_596.htmlrho1000kg/m3roughness0Length375msum K_L fittings12.48conservative estimate: 5 90 elbow, 1 45 elbow, pipe exit, 2 open valvesPump-to-Tank Elevation Change77mItem1"1-1/4"1-1/2"2"2-1/2"3"3-1/2"4"D_pipe (in)1.0291.361.592.0472.4453.0423.5213.998D_pipe (m)0.0260.0350.0400.0520.0620.0770.0890.102A (m^2)5.37E-049.37E-041.28E-032.12E-033.03E-034.69E-036.28E-038.10E-03A (cm^2)5.379.3712.8121.2330.2946.8962.8280.99V (m/s)20.5011.748.595.183.632.351.751.36Re5.36E+054.05E+053.47E+052.69E+052.26E+051.81E+051.57E+051.38E+05Turbulentf0.01170.01250.01300.01390.01450.01530.01590.0164Blasius formula (estimates low for this Re)

h_L major (m)3593.8955.5454.9137.058.920.910.45.7h_L minor (m)267.787.747.017.18.43.52.01.2h_L major (% of z) 4667.3%1240.9%590.8%177.9%76.5%27.1%13.5%7.4%based on pump-to-tank elevationh_L minor (% of z)347.6%113.9%61.0%22.2%10.9%4.6%2.5%1.5%

Sheet2

Sheet3

Supply Line 1Las Delicias Water ProjectEstimations of head required for pumping water between water main on Calle Principal and new proposed storage tankAssumptionsFlow175gallons/minFlow0.011m3/shttp://www.engineeringtoolbox.com/flow-units-converter-d_405.htmlmu0.001Ns/m2http://www.engineeringtoolbox.com/water-dynamic-kinematic-viscosity-d_596.htmlrho1000kg/m3roughness0Length375msum K_L fittings12.48conservative estimate: 5 90 elbow, 1 45 elbow, pipe exit, 2 open valvesPump-to-Tank Elevation Change77mItem1"1-1/4"1-1/2"2"2-1/2"3"3-1/2"4"D_pipe (in)1.0291.361.592.0472.4453.0423.5213.998D_pipe (m)0.0260.0350.0400.0520.0620.0770.0890.102A (m^2)5.37E-049.37E-041.28E-032.12E-033.03E-034.69E-036.28E-038.10E-03A (cm^2)5.379.3712.8121.2330.2946.8962.8280.99V (m/s)20.5011.748.595.183.632.351.751.360.7 to 2 m/s recommendedRe5.36E+054.05E+053.47E+052.69E+052.26E+051.81E+051.57E+051.38E+05Turbulentf0.01170.01250.01300.01390.01450.01530.01590.0164Blasius formula (estimates low for this Re)f 0.01290.01360.01400.01470.01520.01580.01630.0167from EWB document

h_L major (m)3593.8955.5454.9137.058.920.910.45.7h_L major (m)5317.31367.2638.8186.678.627.113.37.2Hazen-Williamsh_L minor (m)267.787.747.017.18.43.52.01.2h_L major (% of z) 4667.3%1240.9%590.8%177.9%76.5%27.1%13.5%7.4%based on pump-to-tank elevationh_L minor (% of z)347.6%113.9%61.0%22.2%10.9%4.6%2.5%1.5%

MaterialsQuantityPricefrom Vidri San Salvador http://www.vidri.com.sv Pipe4" PVC370m length$16.9080 psi PVCUnion Couple 4" PVC$3.70Tee6" to 4"1$9.954" PVCGate Valve245 ElbowPVC1$2.804" PVC90 ElbowPVC1$7.49250 psi 4" PVC

PVC PrimerPVC CementPipe4" Steel5 m length90 ElbowSteel2PVC-Steel Adapter4"1

Distribution SystemOVERALL COMMUNITY OF LAS DELICIASCURRENT FROM TANK 1CURRENT FROM TANK 2CURRENT FROM TANK 3PROPOSED FROM NEW TANKPROPOSED FROM NEW TANKADJUSTED FROM TANK 1ADJUSTED FROM TANK 3# homes =584430Assumptions# homes =291# homes =33# homes =260# homes =137# homes =280# homes =154# homes =117# people =262819354.5people/house# people =1310# people =148.5# people =1170# people =617# people =1260# people =693# people =526.5Demand gal/day65,70048,37525gal/dayDemand gal/day32,738Demand gal/day3,713Demand gal/day29,250Demand gal/day15,413Demand gal/day31,500Demand gal/day17,325Demand gal/day13,163175gal/minpump rateTank Volume35,000Tank Volume11,000Tank Volume25,000Tanks Volume26,000Tanks Volume26,000Tank Volume35,000Tank Volume25,000time to fill (h)3.33time to fill (h)18time to fill (h)2.38time to fill (h)2.48time to fill (h)2.48time to fill (h)3.33time to fill (h)2.38 from well from spring from well from well from well from well from wellOVERALLin 2011from 2007 mapSupplied by Tanque 1Supplied by Tanque 2Supplied by Tanque 3WITHOUT CONNECTION "B"WITH CONNECTION "B"Supplied by Tanque 1 Supplied by Tanque 3TRAMO ## Homes in 2011# Homes in 2007 from mapDemand gallons 2011Pipe Diameter inchesDistance from map metersSupplied by Tanque # on mapviaTRAMO # from Tank 1# Homes3TRAMO # from Tank 2# Homes5TRAMO # from Tank 3# Homes7Accessible?TRAMO from new tank# HomesAccessible?2Tramo from New with B# Homes2Tramo #2HomesTramo #3Homes21 upper15221688231111 upper1500001 upper15001 lower8900271011 upper1 lower800001 lower800248515400254611 upper2480000248002a767881137122a700002a7002b25272813242112a2b2500002b25002c9810131144122c900002c900342374725214012 & 1 lower?3420000342003a404645001.25298133a4000Yes3a40Yes3a4000003b18920251.25160133b1800Yes3b18Yes3b1800006 upper3729416321441CallePrin Upper6 upper3700Yes6 upper37Yes6 upper3700006 lower0149216 lower000Yes6 lower0Yes6 lower000006a666751226166a600Yes6a6Yes6a6000010171619131.251301CallePrin Upper101700Yes1017Yes10170000111914213813421CallePrin Lower111900Yes1119Yes111900004134146319020413000000052021225029792052000000007 upper1642180024293007 upper1600007 upper167 lower424725257237 upper007 lower4200007 lower42810141125136237 upper008100000810918182025245537 lower0091800009189a212250.512539009a200009a29b79788123639009b700009b712109112512323CallePrin Lower0012100Yes12100000Calle Prin Upper22412475246837 lower00Calle Prin Upper220000Calle Prin Upper22CallePrin Lower32360023773CallePrin Upper00CallePrin Lower320YesCallePrin Lower320000NewNW5764133CallePrin Lower00NewNW570YesNewNW570000NewSW4449503CallePrin Lower00NewSW440YesNewSW440000

Supply Line 1Las Delicias Water ProjectEstimations of head required for pumping water between water main on Calle Principal and new proposed storage tankAssumptionsFlow175gallons/minFlow0.011m3/shttp://www.engineeringtoolbox.com/flow-units-converter-d_405.htmlmu0.001Ns/m2http://www.engineeringtoolbox.com/water-dynamic-kinematic-viscosity-d_596.htmlrho1000kg/m3roughness0Length375msum K_L fittings12.48conservative estimate: 5 90 elbow, 1 45 elbow, pipe exit, 2 open valvesPump-to-Tank Elevation Change77mItem1"1-1/4"1-1/2"2"2-1/2"3"3-1/2"4"D_pipe (in)1.0291.361.592.0472.4453.0423.5213.998D_pipe (m)0.0260.0350.0400.0520.0620.0770.0890.102A (m^2)5.37E-049.37E-041.28E-032.12E-033.03E-034.69E-036.28E-038.10E-03A (cm^2)5.379.3712.8121.2330.2946.8962.8280.99V (m/s)20.5011.748.595.183.632.351.751.360.7 to 2 m/s recommendedRe5.36E+054.05E+053.47E+052.69E+052.26E+051.81E+051.57E+051.38E+05Turbulentf0.01170.01250.01300.01390.01450.01530.01590.0164Blasius formula (estimates low for this Re)f 0.01290.01360.01400.01470.01520.01580.01630.0167from EWB document

h_L major (m)3593.8955.5454.9137.058.920.910.45.7h_L major (m)5317.31367.2638.8186.678.627.113.37.2Hazen-Williamsh_L minor (m)267.787.747.017.18.43.52.01.2h_L major (% of z) 4667.3%1240.9%590.8%177.9%76.5%27.1%13.5%7.4%based on pump-to-tank elevationh_L minor (% of z)347.6%113.9%61.0%22.2%10.9%4.6%2.5%1.5%

MaterialsQuantityPricefrom Vidri San Salvador http://www.vidri.com.sv Pipe4" PVC370m length$16.9080 psi PVCUnion Couple 4" PVC$3.70Tee6" to 4"1$9.954" PVCGate Valve245 ElbowPVC1$2.804" PVC90 ElbowPVC1$7.49250 psi 4" PVC

PVC PrimerPVC CementPipe4" Steel5 m length90 ElbowSteel2PVC-Steel Adapter4"1

Distribution SystemOVERALL COMMUNITY OF LAS DELICIASCURRENT FROM TANK 1CURRENT FROM TANK 2CURRENT FROM TANK 3PROPOSED FROM NEW TANKPROPOSED FROM NEW TANKADJUSTED FROM TANK 1ADJUSTED FROM TANK 3# homes =584430Assumptions# homes =291# homes =33# homes =260# homes =137# homes =280# homes =154# homes =117# people =262819354.5people/house# people =1310# people =148.5# people =1170# people =617# people =1260# people =693# people =526.5Demand gal/day65,70048,37525gal/dayDemand gal/day32,738Demand gal/day3,713Demand gal/day29,250Demand gal/day15,413Demand gal/day31,500Demand gal/day17,325Demand gal/day13,163175gal/minpump rateTank Volume35,000Tank Volume11,000Tank Volume25,000Tanks Volume26,000Tanks Volume26,000Tank Volume35,000Tank Volume25,000time to fill (h)3.33time to fill (h)18time to fill (h)2.38time to fill (h)2.48time to fill (h)2.48time to fill (h)3.33time to fill (h)2.38 from well from spring from well from well from well from well from wellOVERALLin 2011from 2007 mapSupplied by Tanque 1Supplied by Tanque 2Supplied by Tanque 3WITHOUT CONNECTION "B"WITH CONNECTION "B"Supplied by Tanque 1 Supplied by Tanque 3TRAMO ## Homes in 2011# Homes in 2007 from mapDemand gallons 2011Pipe Diameter inchesDistance from map metersSupplied by Tanque # on mapviaTRAMO # from Tank 1# Homes3TRAMO # from Tank 2# Homes5TRAMO # from Tank 3# Homes7Accessible?TRAMO from new tank# HomesAccessible?2Tramo from New with B# Homes2Tramo #2HomesTramo #3Homes21 upper15221688231111 upper1500001 upper15001 lower8900271011 upper1 lower800001 lower800248515400254611 upper2480000248002a767881137122a700002a7002b25272813242112a2b2500002b25002c9810131144122c900002c900342374725214012 & 1 lower?3420000342003a404645001.25298133a4000Yes3a40Yes3a4000003b18920251.25160133b1800Yes3b18Yes3b1800006 upper3729416321441CallePrin Upper6 upper3700Yes6 upper37Yes6 upper3700006 lower0149216 lower000Yes6 lower0Yes6 lower000006a666751226166a600Yes6a6Yes6a6000010171619131.251301CallePrin Upper101700Yes1017Yes10170000111914213813421CallePrin Lower111900Yes1119Yes111900004134146319020413000000052021225029792052000000007 upper1642180024293007 upper1600007 upper167 lower424725257237 upper007 lower4200007 lower42810141125136237 upper008100000810918182025245537 lower0091800009189a212250.512539009a200009a29b79788123639009b700009b712109112512323CallePrin Lower0012100Yes12100000Calle Prin Upper22412475246837 lower00Calle Prin Upper220000Calle Prin Upper22CallePrin Lower32360023773CallePrin Upper00CallePrin Lower320YesCallePrin Lower320000NewNW5764133CallePrin Lower00NewNW570YesNewNW570000NewSW4449503CallePrin Lower00NewSW440YesNewSW440000