Sump Pit Calculation 1

hdng

HYDRAULIC CALCULATIONforPUMPS

By : LAMAH EST.

SUPPLIER

LAMAH EST.P.O. BOX : 4814 RIYADH 11412 KSATEL: 4788650 FAX : 4769138

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QTY0Table of Fixtures Fixture type : private / public FIXTURES / POINT NO.Main villa BasementMain villa G.F.Main villa F.F.Main villa RoofAnnexesTotal Fixtures

Water closet (flush tank)1271415Water Bidet0Hose for W.C1271415Lavatory41061425Shower341412Bath tub55Kitchen sink12126Dishwashing machine0Laundry11Ablution0

demTOTAL DEMAND CALCULATIONPUMPS0Floor FIXTURESFixture unit Demand QuantityTotalPublicPrivateColdHotTotalColdHotTotalColdHotTotalPublicPrivatePublicPrivatePublicPrivatePublicPrivatePART (ALL)Water closet (flush tank)505303206000060Water Bidet1.51.520.750.75120015015020Hose for W.C1.51.520.750.751067050.25050.25067Lavatory1.51.520.750.751082061.5061.5082Shower3341.51.52010015015020Bath tub3341.51.52017025.5025.5034Kitchen sink3341.51.52028042042056Dishwashing machine111106000606Laundry3341.51.52080012001200160Ablution111.50.750.75101000750750100Total Fixture Units0464.250410.250605Total Fixture Units464.25410.25605WATER DEMAND ( GPM )143.9WATER DEMAND ( m3/ h )32.67

Pump selection for potable water and fire system : GRUNDFOS 2 CR8-50 with 200 L Pressure tank Flexcon / USA.

flush tankvalve605143.9157.12000652786.52710827129.228.61410.430.21611.631.81812.833.42014352517383020413522.543.84024.846.5452749502951.5603255703558.5803862904164.810043.567.51204872.514052.577.51605782.518061872006591.522570972507510127580105.53008511040010512650012514275017017810002082081250240240150026726717502942942000321321225034834825003753752750402402300043243240005255255000593593600064364370006856858000718718900074574510000769769

loss-BLOCATION : MAIN HOSPITALEAST RIYADH-500 BED HOSPITALHEAD LOSS CALCULATION ( COLBROOK formula )PUMP HEAD CALCULATION FOR SUMP PIT NO. 1no. part of pipeDN Nominal diameterID Pipe Inner diameterL Pipe lengthK Pipe roughnessQ Flow rateLocal factors of fittingsGH Static healV Mean Velocity RE Reynolds numberF Liner loss factorLoss m per 100 mdh(1) Liner lossdh(2) Local lossDH Total lossTotal heal (DH+GH) / pipeAccumulative Pressuregate valvecheck valveelbow ( 45 leg.)elbow ( 90 leg.)teedischarge outletreducerStrainerTotal local factors

no.DNmmmmmGPMl/s0.220.20.30.910.521/1mm/s1/11/1mmmmmm500A-B63pvc53.62.50.01503.1511111451.396018241174826.5777223090.01993415913.69416520250.09235413010.39732251360.48967664375.48967664375.48967664370.0265460130.01938183630.0199974659B-C110pvc93.68.50.01503.1530.90.457792817942849.40775551030.02196964260.25071833230.02131105820.00961349840.03092455660.03092455660.03092455660.02720837290.02142719280.0220447732ERROR:#DIV/0!ERROR:#DIV/0!ERROR:#DIV/0!ERROR:#DIV/0!ERROR:#DIV/0!ERROR:#DIV/0!ERROR:#DIV/0!ERROR:#DIV/0!ERROR:#DIV/0!ERROR:#DIV/0!ERROR:#DIV/0!ERROR:#DIV/0!ERROR:#DIV/0!ERROR:#DIV/0!ERROR:#DIV/0!ERROR:#DIV/0!ERROR:#DIV/0!ERROR:#DIV/0!ERROR:#DIV/0!ERROR:#DIV/0!ERROR:#DIV/0!ERROR:#DIV/0!ERROR:#DIV/0!ERROR:#DIV/0!ERROR:#DIV/0!ERROR:#DIV/0!ERROR:#DIV/0!ERROR:#DIV/0!ERROR:#DIV/0!ERROR:#DIV/0! TOTAL111104011050.11366518830.4069360120.52060120035.52

PUMP SELECTION :Static head=5.00m50 GPM @ 12 MTRS HEAD EACH PUMPtotal friction loss=0.52m1 DUTY & 1 STANDBYtotal dynamic head=5.52m6.07m 10% Safety Factor

K Pipe roughnessPVC0.01PEX0.01cop0.01l/s1m3/h2GI0.1gpm3DI0.1m3/s4

nominalout-diathick.in-dia16 pvc161.213.620 pvc201.51725 pvc251.921.232 pvc322.427.240 pvc4033450 pvc503.742.663 pvc634.753.675 pvc755.663.890 pvc906.776.6110 pvc1108.293.6125 pvc1259.3106.4140 pvc14010.4119.2160 pvc16011.9136.2200 pvc20014.9170.2225 pvc22516.7191.6250 pvc25018.6212.8280 pvc28020.8238.4315 pvc31523.8267.4355 pvc35526.3302.4400 pvc40029.7340.612 PEX122816 PEX162.311.420 PEX202.814.425 PEX253.51832 PEX324.52340 PEX405.628.850 PEX507.135.863 PEX635.751.690 PEX908.273.6110 PEX1101090NEPRO "CPVC" ASTM F 441 SCH40SCH801/2" PVC21.21.717.821.342.773.733/4" PVC26.61.922.826.672.873.911" PVC33.42.22933.43.384.551 1/4" PVC42.22.736.842.163.564.851 1/2" PVC48.13.141.948.263.685.082" PVC60.23.952.460.323.915.543" PVC88.75.777.388.95.497.624" PVC114.17.399.5114.36.028.566" PVC16810.8146.4168.287.1110.978" PVC218.812.6193.6219.088.1812.71/4" COP9.5250.8897.7470.035
**: **:WALL THICKNESS0.375
**: **:OUT SIDE DIAMETER(IN)

3/8" COP12.71.244610.21080.0490.51/2" COP15.8751.244613.38580.0490.6255/8" COP19.051.244616.56080.0490.753/4" COP22.2251.65118.9230.0650.8751" COP28.5751.65125.2730.0651.1251 1/4" COP34.9251.65131.6230.0651.3751 1/2" COP41.2751.828837.61740.0721.6252" COP53.9752.108249.75860.0832.1252 1/2" COP66.6752.41361.8490.0952.6253" COP79.3752.768673.83780.1093.1253 1/2" COP92.0753.04885.9790.123.6254" COP104.7753.403697.96780.1344.1255" COP130.1754.064122.0470.165.1256" COP155.5754.8768145.82140.1926.12580 DI9868086100 DI1186.1100105.8125 DI1446.2125131.6150 DI1706.3150157.4200 DI2226.4200209.2250 DI2746.8250260.4300 DI3267.2300311.6350 DI3787.7350362.6400 DI4298.1400412.8450 DI4808.6450462.8500 DI5329500514600 DI6359.9600615.2700 DI73810.8700716.4800 DI84211.7800818.6

1/2" GI21.32.7715.763/4" GI26.72.8720.961" GI33.43.3826.641 1/4" GI42.23.5635.081 1/2" GI48.33.6840.942" GI60.33.9152.482 1/2" GI735.1662.683" GI88.95.4977.923 1/2" GI101.65.7490.124" GI114.36.02102.265" GI141.36.55128.26" GI168.37.11154.088" GI219.18.18202.7410" GI2739.27254.4612" GI323.810.31303.1814" GI355.611.13333.3416" GI406.412.738118" GI457.214.27428.6620" GI50815.09477.8224" GI609.617.48574.64

head calculation1_x0001_2_x0002_Project :Page ( 1 )3_x0003_4_x0004_5_x0005_Head Loss Calculations :6_x0006_7_x0007_8_x0008_The total friction loss Hs Consist of:910

Hs=Hs1 + Hs2 . (1)11_x000B_12_x000C_Where:Hs1: Friction loss Inside pipes13_x000D_Hs2: Friction loss inside fittings14_x000E_15_x000F_Linear friction loss equation:16_x0010_17_x0011_Hs = J . L ... .... (2)18_x0012_19_x0013_J = l . V / ( 2 g D ) .... (3)20_x0014_21_x0015_Where:J: linear loss factor22_x0016_L: length Of the pipe (m.)23_x0017_l : friction loss factor (COLBROOK-WHITE formula)24_x0018_V: velocity of water (m/s)25_x0019_g: gravity acceleration (9.81 m/s)26_x001A_D: pipe inside diameter (m.)27_x001B_28_x001C_COLBROOK WHITE formula:.. ( 4 )29_x001D_30_x001E_31_x001F_1 = - 2 x log [k+2.51)32 sqr(l)3.7 x DRe x sqr( l )33!34"35#Where:K: pipe inside Surface roughness (m.)36$D: pipe inside diameter (m.)37%RE: REYNOLDS no. is given as follows: (1/1)38&39'RE = V x D / n . ( 5 )40(41)Where:n: water viscosity= ( n = 0.000001 m2/s)42*V: velocity of water (m/s)43+D: pipe inside diameter (m.)44,45-46.V = Q / A .... ( 6 )47/480Where:Q: flow rate (m/s)491A: cross section are of the pipe (m)502 513Data for the first pipe :110pvcPipe type & size110524110mmOut side diameter (mm)5358.2mmWall thickness (mm)546557D =0.0936m: pipe inside diameter (m.)568K =0.00001m: pipe inside Surface roughness (m.)57958:59;6063?64@Flow : Q = 50.0 GPM = 03.15 l/s = 0.00315 m/sec65A66BA =p x D2 / 4 =3.14 x 0.094 / 4 = 0.00688 m67C68DV =Q / A =1.396m/s69E70FRe = V x D / n =1.396 x 0.0936 / 0.000001 = 74826.5871G72H1 = - 2 log [0.00001+2.51 ]73Isqr(l)3.7 x 0.09474826.6x sqr( l )74J75KBy solving above equation :76L77Ml =0.0199378N79O J = l . V / ( 2 g D ) = 0.01993 x 1.396 x 1.396 = 0.03694 m/m80P 2 x 9.81 x 0.093681Q82RLoss m per 100 m = J x 100 =0.03694 x 100 m = 3.694 m / 100m83S84TPipe length L = 2.5 m85U86Vdh(1) Liner loss = J x L = 0.03694 x 2.5 = 0.092 m87W88XLocal losses equation is given as follows:89Y90ZHS2 = SUM ZE . V / ( 2 . G ) .... (7)91[92\Where:G: Gravity acceleration (9.81 m/s)93]V: Velocity of water (m/s)94^SUM ZE : Sum of local loss factors95_96`SUM ZE = gate valve1 x 0.2=0.297acheck valve1 x 2=298belbow ( 45 leg.)0 x 0.2=099celbow ( 90 leg.)1 x 0.3=0.3100dtee0 x 0.9=0101edischarge outlet1 x 1=1102freducer1 x 0.5=0.5103gStrainer0 x 2=0104hTotal local factors=4.00105i106jHS2=SUM ZE . V / ( 2 . g )107k108l HS(2) = SUM ZE.x V / ( 2 g ) = 4 x 1.396 X 1.396 = 0.3973 m109m 2 x 9.81 110n111oDH Total loss = HS1 + HS2 = 0.092 + 0.397 = 0.49 m 112p113qTotal heal (DH+GH) / pipe = Static head + Friction losses . ( 8 )114r115s= 5.0 + 0.49 = 5.49 m116t117uOther pipes are calculated same as above , All data and results are arranged in the following table :118v119w120x121y122z6123{10124|16125}25126~351277012895129120130150131185132240133300134400135136137138251392514001412514260143100144200145300146500147750148100014920001503000151 152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255255

QTY20 Flow rate through the piping system to the farthest point /PUMPSERROR:#REF!

Table of fixturesFixture type :: private / public FIXTURES / POINT NO.fuK-LJ-KI-JH-IG-HF-GE-FD-EC-DB-CA-BPumps to A: private / publicAddT.Fix.Total f.uAddT.Fix.Total f.uAddT.Fix.Total f.uAddT.Fix.Total f.uAddT.Fix.Total f.uAddT.Fix.Total f.uAddT.Fix.Total f.uAddT.Fix.Total f.uAddT.Fix.Total f.uAddT.Fix.Total f.uAddT.Fix.Total f.uAddT.Fix.Total f.uWater closet (flush tank)3113126139141215151618172118241927110301113311236Water Bidet1111122133144155166177188199110101111111212Hose for W.C1111122133144155166177188199110101111111212Lavatory1111122133144155166177188199110101111111212Shower211212413614815101612171418161918110201112211224Bath tub211212413614815101612171418161918110201112211224Kitchen sink211212413614815101612171418161918110201112211224Dishwashing machine1111122133144155166177188199110101111111212Laundry211212413614815101612171418161918110201112211224Ablution1111122133144155166177188199110101111111212SUM Total f.u.163248648096112128144160176192Flow rate ( gpm )122128333843465053576063

108.0006586.5108129.21410.41611.61812.82014251730203522.54024.845275029603270358038904110043.51204814052.51605718061200652257025075275803008540010550012575017010002081250240150026717502942000321225034825003752750402300043240005255000593600064370006858000718900074510000769

loss-FERROR:#REF!HEAD LOSS CALCULATION ( COLBROOK formula ) 0no. part of pipeDN Nominal diameterID Pipe Inner diameterL Pipe lengthK Pipe roughnessQ Flow rateLocal factors of fittingsGH Static healV Mean Velocity RE Reynolds numberl Liner loss factorLoss m per 100 mdh(1) Liner lossdh(2) Local lossDH Total lossTotal heal (DH+GH) / pipeAccumulative Pressuregate valvecheck valveelbow ( 45 leg.)elbow ( 90 leg.)teedischarge outletreducerStrainerTotal local factors

no.DNmmmmmGPMl/s0.220.20.30.910.521/1mm/s1/11/1mmmmmm500Suction40PVC34800.01553.46522667.463.8164143793129758.0888972750.01869957940.828644018532.66291521485.49343213538.156347349844.156347349844.15634734980.02585634230.01826253650.0187361457 TOTAL8022660000632.66291521485.49343213538.156347349844.16

outlet pressure=total static head=6.00 ( Including suction head )total friction loss=38.16total dynamic head=44.16

K Pipe roughnessPVC0.01PEX0.01GI0.1l/s1DI0.1m3/h2gpm3m3/s4

nominalout-diathick.in-dia100016 pvc161.213.60020 pvc201.5176525 pvc251.921.286.532 pvc322.427.210840 pvc40334129.250 pvc503.742.61410.463 pvc634.753.61611.675 pvc755.663.81812.890 pvc906.776.62014110 pvc1108.293.62517125 pvc1259.3106.43020140 pvc14010.4119.23522.5160 pvc16011.9136.24024.8200 pvc20014.9170.24527225 pvc22516.7191.65029250 pvc25018.6212.86032280 pvc28020.8238.47035315 pvc31523.8267.48038355 pvc35526.3302.49041400 pvc40029.7340.610043.512 PEX12281204816 PEX162.311.414052.520 PEX202.814.41605725 PEX253.5181806132 PEX324.5232006540 PEX405.628.82257050 PEX507.135.82507563 PEX635.751.62758090 PEX908.273.630085110 PEX11010904001051/2" PVC21.21.717.85001253/4" PVC26.61.922.87501701" PVC33.42.22910002081 1/4" PVC42.22.736.812502401 1/2" PVC48.13.141.915002672" PVC60.23.952.417502943" PVC88.75.777.320003214" PVC114.17.399.522503486" PVC16810.8146.425003758" PVC218.812.6193.627504021/2" GI21.32.7715.7630004323/4" GI26.72.8720.9640005251" GI33.43.3826.6450005931 1/4" GI42.23.5635.0860006431 1/2" GI48.33.6840.9470006852" GI60.33.9152.4880007182 1/2" GI735.1662.6890007453" GI88.95.4977.92100007693 1/2" GI101.65.7490.124" GI114.36.02102.265" GI141.36.55128.26" GI168.37.11154.088" GI219.18.18202.7410" GI2739.27254.4612" GI323.810.31303.1814" GI355.611.13333.3416" GI406.412.738118" GI457.214.27428.6620" GI50815.09477.8224" GI609.617.48574.64

sewage flowTotal sewage flow rate

FIXTURESDemand l/sQuantityTotalWater closet (flush tank/valve)1.51015.00Arabic W.C.(flush tank)2.00.00Water Bidet0.4104.00Lavatory0.4104.00Shower0.785.60Bath tub0.80.00Kitchen sink1.044.00Dishwashing machine0.40.00Laundry0.742.80Urinal ( flush tank )0.70.00Urinal ( flush valve )1.00.00Floor drain0.542.000.00Total flow l/sl/s37.40Estimated flow l/s (from chart)l/s7.65m3/h27.54gpm121.337.407.7001121.732.142.4552.7563.0573.383.5593.75104205.5306.8407.95508.9609.87010.58011.29011.7510012.3110131201413015

loss-IRERROR:#REF!HEAD LOSS CALCULATION ( COLBROOK formula ) 0no. part of pipeDN Nominal diameterID Pipe Inner diameterL Pipe lengthK Pipe roughnessQ Flow rateLocal factors of fittingsGH Static healV Mean Velocity RE Reynolds numberF Liner loss factorLoss m per 100 mdh(1) Liner lossdh(2) Local lossDH Total lossTotal heal (DH+GH) / pipeAccumulative Pressuregate valvecheck valveelbow ( 45 leg.)elbow ( 90 leg.)teedischarge outletreducerStrainerTotal local factors

no.DNmmmmmgpml/s0.220.20.30.910.521/1mm/s1/11/1mmmmmm500Suction6"GI154.0850.110.0631121116.230.0033787661520.60028114170.07995640350.00003019420.00000150970.00000360750.00000511723.00000511723.00000511720.10651633480.07502594420.0816194508pumps to A160PVC136.2200.0110.0631211.70.0043241072588.94340174970.07585079160.00005307340.00001061470.00000162010.00001223480.00001223483.00001735240.11065149570.06986050630.0778524414A-B160PVC136.2122.50.0110.0631113.10.0043241072588.94340174970.07585079160.00005307340.00006501490.00000295430.00006796920.00006796923.000085321224.50.11065149570.06986050630.0778524414B-C160PVC136.257.50.0110.063111.20.0043241072588.94340174970.07585079160.00005307340.00003051720.00000114360.00003166080.00003166083.00011698211.50.11065149570.06986050630.0778524414C-D110PVC93.6820.0110.063111.40.0091558564856.98815511020.06590786240.00030085710.00024670290.00000598170.00025268460.00025268463.000369666616.40.10487354490.05994055180.0677379809D-E110PVC93.632.50.0110.06310.90.0091558564856.98815511020.06590786240.00030085710.00009777860.00000384540.0001016240.0001016243.00047129066.50.10487354490.05994055180.0677379809E-F110PVC93.68.50.0110.06310.90.0091558564856.98815511020.06590786240.00030085710.00002557290.00000384540.00002941830.00002941833.00050070891.70.10487354490.05994055180.0677379809F-G110PVC93.6480.0110.06310.90.0091558564856.98815511020.06590786240.00030085710.00014441140.00000384540.00014825680.00014825683.00064896579.60.10487354490.05994055180.0677379809G-H110PVC93.642.50.0110.06321.80.0091558564856.98815511020.06590786240.00030085710.00012786430.00000769080.00013555510.00013555513.00078452088.50.10487354490.05994055180.0677379809H-I110PVC93.6101.50.0110.06343.60.0091558564856.98815511020.06590786240.00030085710.000305370.00001538160.00032075160.00032075163.001105272420.30.10487354490.05994055180.0677379809I-J110PVC93.6138.50.0110.06321.80.0091558564856.98815511020.06590786240.00030085710.00041668710.00000769080.00042437790.00042437793.001529650327.70.10487354490.05994055180.0677379809J-K50PVC42.6195.50.0110.063111.20.04420093641882.95989010130.05036786520.01177356220.02301731410.00011949370.02313680780.02313680783.024666458139.10.09886791680.04464930150.0518534888K-L32PVC27.2150.0110.063141113.80.1084208632949.04747493810.04388392970.09666367970.0144995520.00227672360.01677627560.01677627563.041442733730.09794685490.03844796490.0451677603 TOTAL869420101813130.03898890960.0024538240.04144273373.04

outlet pressure=0.00total static head=3.00 ( Including suction head )total friction loss=0.04total dynamic head=3.04

K Pipe roughnessl/s1PVC0.01m3/h2PEX0.01gpm3GI0.1m3/s4DI0.1

nominalout-diathick.in-dia100016 pvc161.213.60020 pvc201.5176525 pvc251.921.286.532 pvc322.427.210840 pvc40334129.250 pvc503.742.61410.463 pvc634.753.61611.675 pvc755.663.81812.890 pvc906.776.62014110 pvc1108.293.62517125 pvc1259.3106.43020140 pvc14010.4119.23522.5160 pvc16011.9136.24024.8200 pvc20014.9170.24527225 pvc22516.7191.65029250 pvc25018.6212.86032280 pvc28020.8238.47035315 pvc31523.8267.48038355 pvc35526.3302.49041400 pvc40029.7340.610043.512 PEX12281204816 PEX162.311.414052.520 PEX202.814.41605725 PEX253.5181806132 PEX324.5232006540 PEX405.628.82257050 PEX507.135.82507563 PEX635.751.62758090 PEX908.273.630085110 PEX11010904001051/2" PVC21.21.717.85001253/4" PVC26.61.922.87501701" PVC33.42.22910002081 1/4" PVC42.22.736.812502401 1/2" PVC48.13.141.915002672" PVC60.23.952.417502943" PVC88.75.777.320003214" PVC114.17.399.522503486" PVC16810.8146.425003758" PVC218.812.6193.627504021/2" GI21.32.7715.7630004323/4" GI26.72.8720.9640005251" GI33.43.3826.6450005931 1/4" GI42.23.5635.0860006431 1/2" GI48.33.6840.9470006852" GI60.33.9152.4880007182 1/2" GI735.1662.6890007453" GI88.95.4977.92100007693 1/2" GI101.65.7490.124" GI114.36.02102.265" GI141.36.55128.26" GI168.37.11154.088" GI219.18.18202.7410" GI2739.27254.4612" GI323.810.31303.1814" GI355.611.13333.3416" GI406.412.738118" GI457.214.27428.6620" GI50815.09477.8224" GI609.617.48574.64

loss-sewageHEAD LOSS CALCULATION ( COLBROOK formula )

no. part of pipeDN Nominal diameterID Pipe Inner diameterL Pipe lengthK Pipe roughnessQ Flow rateLocal factors of fittingsGH Static healV Mean Velocity RE Reynolds numberF Liner loss factorLoss m per 100 mdh(1) Liner lossdh(2) Local lossDH Total lossTotal head (DH+GH) / pipegate valvecheck valveelbow ( 45 leg.)elbow ( 90 leg.)teedischarge outletreducerStrainerTotal local factors

no.DNmmmmmGPMl/s0.220.20.30.910.521/1mm/s1/11/1mmmmmpumps to manhole75PVC63.8400.01382.394114115.360.748846677547776.41802658280.02163470640.96920833070.38768333230.15148257570.5391659086.5391659080.02858891330.02097635720.0217212786 TOTAL401104110060.38768333230.15148257570.5391659086.54

K Pipe roughnessPVC0.01PEX0.01GI0.1DI0.1

l/s1m3/h2gpm3m3/s4

nominalout-diathick.in-dia100016 pvc161.213.60020 pvc201.5176525 pvc251.921.286.532 pvc322.427.210840 pvc40334129.250 pvc503.742.61410.463 pvc634.753.61611.675 pvc755.663.81812.890 pvc906.776.62014110 pvc1108.293.62517125 pvc1259.3106.43020140 pvc14010.4119.23522.5160 pvc16011.9136.24024.8200 pvc20014.9170.24527225 pvc22516.7191.65029250 pvc25018.6212.86032280 pvc28020.8238.47035315 pvc31523.8267.48038355 pvc35526.3302.49041400 pvc40029.7340.610043.512 PEX12281204816 PEX162.311.414052.520 PEX202.814.41605725 PEX253.5181806132 PEX324.5232006540 PEX405.628.82257050 PEX507.135.82507563 PEX635.751.62758090 PEX908.273.630085110 PEX1101090400105NEPRO "CPVC" ASTM F 441 SCH40SCH801/2" PVC21.21.717.850012521.342.773.733/4" PVC26.61.922.875017026.672.873.911" PVC33.42.229100020833.43.384.551 1/4" PVC42.22.736.8125024042.163.564.851 1/2" PVC48.13.141.9150026748.263.685.082" PVC60.23.952.4175029460.323.915.543" PVC88.75.777.3200032188.95.497.624" PVC114.17.399.52250348114.36.028.566" PVC16810.8146.42500375168.287.1110.978" PVC218.812.6193.62750402219.088.1812.71/2" GI21.32.7715.7630004323/4" GI26.72.8720.9640005251" GI33.43.3826.6450005931 1/4" GI42.23.5635.0860006431 1/2" GI48.33.6840.9470006852" GI60.33.9152.4880007182 1/2" GI735.1662.6890007453" GI88.95.4977.92100007693 1/2" GI101.65.7490.124" GI114.36.02102.265" GI141.36.55128.26" GI168.37.11154.088" GI219.18.18202.7410" GI2739.27254.4612" GI323.810.31303.1814" GI355.611.13333.3416" GI406.412.738118" GI457.214.27428.6620" GI50815.09477.8224" GI609.617.48574.64

PS-2Total sewage flow rateDIWANIA : SUMP PUMP NO. 2

FIXTURESDemand l/sQuantityTotalWater closet (flush tank)1.534.50Water closet (flush valve)1.50.00Arabic W.C.(flush tank)2.00.00Arabic W.C.(flush valve)2.00.00Water Bidet0.431.20Lavatory0.431.20Shower0.732.10Bath tub0.80.00Kitchen sink ( H < 13 cm )0.70.00Kitchen sink ( H > 13 cm )1.00.00Dishwashing machine0.40.00Laundry0.70.00Urinal ( single tap )2.00.00Urinal ( flush tank )0.70.00Urinal ( flush valve )1.00.00Floor drain ( size 40 mm )0.573.50Floor drain ( size 50 mm )0.80.00Total primary flow l/sl/s12.50Estimated flow l/s (from chart)l/s4.38m3/h15.75gpm69.412.504.4001121.732.142.4552.7563.0573.383.5593.75104205.5306.8407.95508.9609.87010.58011.29011.7510012.3110131201413015

PT

Project :

Calculating the Pressure Tank Size

Pressure Tank Size Formula is given as follows :

Drawdown volumesize = (cut-out pressure - cut-in pressure)cut-out pressure + 1

Drawdown is based on pump capacity and the number of start/stops per hour and amount of water which can be taken from the tank before the pump starts.

Drawdown in liters = 250 x QI

Tank size in liters = (250 x Q x (cut-out pressure + 1))I x ( cut-out pressure - cut-in pressure )

Where :Q is the average pump flow in m3/hIis the number of starts/stops per hour.cut in & cut out : pressure is indicated in bars.

Data :Pump type & model :GRUNDFOS MODEL : CR8-40Motor power rating P =15k wNumber of starts/stopsI =201 / h ( from pump manufacturer )Average pump flowQ =34m3/hcut in pressure=9barcut out pressure =11.5bar

Tank size in liters = (250 x 34. x ( 11.5 + 1 )) =2125liters20. x ( 11.5 - 9. )

The available standard size is :3000liters

Recommended tank size is :3000liters

Note :

The standard sizes of pressure tanks are : 25; 60; 100; 200; 300; 500; 750; 1000 and 2000 liters.

252502560100200300500750100020003000