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Note de calculAlimentation en eau potableI. Introduction Le systme hydraulique de la zone dtude est constitu de deux sous systmes bien distincts. Lun maill quon appellera tout au long de cette note systme A et lautre ramifi quon dsignera par le systme B.I.1 Systme ACest un systme existant dont lobjectif est de vrifier sil pourra ou non satisfaire les besoins en eau potable de la population quil dessert vu les projections futures que subira la zone dtude en question. Ce systme est constitu de deux (02) mailles. La mthode de calcul utilise et dite la mthode Hardy-Cross, elle repose sur les deux lois suivantes:1re loi: en un nud quelconque de conduite, la somme des dbits qui arrivent ce nud est gale la somme des dbits qui en sortent.2me loi: le long dun parcours orient et ferm, la somme algbrique des pertes de charge est nulle. Cette loi est applique au contour ferm o lorientation positive est donne par le sens du dplacement des aiguilles dune montre.Le calcul du rseau maill seffectue par ajustements successifs.I.2 Systme BCest un systme entirement projet de type ramifi. Il ncessite un calcul pour dterminer les diffrents dbits vhiculs par les tronons afin de subvenir aux besoins de la zone quil doit desservir.Remarque sur les nouvelles dotations Les travaux du groupe GTZ pour le compte du ministre des ressources en eau et vu la situation de la ressource en eau que connat notre pays, indiquent quil est plus exact dtablir de nouvelles dotations. Systme A: Rseau maill1. Besoins domestiqueNombre dhabitants desservir 3915 hab.Dotation brute

150 l/j/hab.Besoins

3915 * 0.15 = 587.25 m3/j2. Autres besoinsEquipementBesoin en eau(m3/j)

Sige APC3

Garde communale3

CFPA3

Hpital 35

Maison de jeunes2

Ecole primaire10

Sous total56

Les besoins totaux en eau potable sont

587.25 + 56 = 643.25 m3/j3. Etude de la variation du dbitComme le rgime de consommation varie dans le temps on dtermine le dbit maximum journalier et le dbit de pointe (dbit du jour le plus charg de lanne). Dans ce sens, on cite diffrentes variations des dbits de consommation: variation annuelle suivant le dveloppement de la ville; variation mensuelle suivant les saisons; variation journalire; variation horaire (heure de pointe).Ces problmes poss par la variation de dbit ont trait aux points le coefficient Kj de lirrgularit de la consommation journalire. Qjmax = Kj x QjmoyO:Kj: coefficient de variation journalire Kj = 1.2AlorsQjmax = 1.2 x 643.25 = 771.90 m3/jUn autre coefficient aussi important que le Kj est le Kp; coefficient de variation horaire, cest le coefficient de lirrgularit de la consommation horaire.Qp = Kj x QjmoyO:Kp: coefficient de variation horaireKp = 2.1Alors

Qp = 2.1 * 643.25 = 1350.82 m3/jDo

Qp = 15.64 l/s4. Etude du rseau de distribution4.1 Dtermination des dbits aux nudsA) Dtermination des dbits concentrsqj: consommation journalire de ltablissementk: coefficient caractrisant la variation horairet: temps de travail de ltablissement en heure.EquipementDbit max.Journalier(m3/j)Kmaxt(h)qc(l/s)

Sige APC31.580.16

Garde communale31.5240.05

CFPA31.580.16

Hpital 352.4240.97

Maison de jeunes2180.07

Ecole primaire101.580.52

Total1.93

B) Dtermination des dbits en route

B.1) Dtermination du dbit spcifiqueltr : la somme des longeurs des trononsqsp = 0.00838 l/s.mlB.2) Calcul du dbit en route de chaque trononTrononLongueur(m)qr = qsp x Li

1 -- 2650.92

2 -- 3151.52.16

3 -- 42313.29

4 -- 51151.64

5 -- 61842.62

6 -- 11822.59

6 -- 31702.42

Total 15.64

B.3) Dtermination du dbit nudal qn = 0.5qr + qconLe calcul est effectu pour chaque noeud du rseauNudTrononsqr0.5qrqconqn

11--2 0.920.27

1--62.590.76

21--20.920.270.100.37

2--32.160.64

32--32.160.64

3--43.290.97

6--32.420.71

43--43.290.97

4--51.640.48

54--51.640.48

5--62.620.77

65--62.620.770.791.56

6--12.590.76

4.2 Calcul des diamtres et vitesses par la mthode Hardy-CrossHypotse de calculRugosit absolue ()

: 0.1 mmCoefficient de perte de charge : 10 %Temprature de leau

: 10 CVitesse moyenne relle

: 1 m/sCas Normal

Schma synoptique simplifi avant correctionTableau des rsultatsMailleTrononTrononAdjacentQ transitCorrig(l/s)Longueur(m)DN (Int/Ext)(mm)Vitesse(m/s)P.D.H.(m)Q transitInitial(l/s)

I1-25.03165.0081.4090.000.9671.019005.095

2-33.741151.5081.4090.000.7191.360883.805

3-6II-3.687170.0081.4090.000.7081.48609-4.065

6-1-12.539182.00144.60160.000.7640.89366-12.475

II6-3I3.687170.0081.4090.000.7081.486094.065

3-42.848231.0067.8075.000.7893.109063.290

4-5-2.082115.0057.0063.000.8162.05395-1.640

5-6-4.702184.0081.4090.000.9042.53903-4.260

Schma synoptique simplifi aprs correctionNombre de correction

: 06DQ1

: -0.000058SDH1

: 0.00DQ2

: 0.000358SDH2

: 0.002Cas d'Incendie

Schma synoptique simplifi avant correctionTableau des rsultatsMailleTrononTrononadjacentQ transitCorrig(l/s)Longueur(m)DN (Int/Ext)(mm)Vitesse(m/s)P.D.H.(m)Q transitInitial(l/s)

I1-28.93565.0081.4090.001.7173.0421712.095

2-37.645151.5081.4090.001.4695.2598710.805

3-6II-7.413170.0081.4090.001.4245.56467-7.650

6-1-22.635182.00144.60160.001.3782.73720-19.475

II6-3I7.413170.0081.4090.001.4245.564677.650

3-410.477231.0067.8075.002.90237.4675513.790

4-5-8.453115.0057.0063.003.31330.02272-5.140

5-6-11.073184.0081.4090.002.12813.01347-7.760

Schma synoptique simplifi aprs correctionNombre de correction

: 09DQ1

: -0.0000414SDH1

: 0.00017DQ2

: 0.000219SDH2

: 0.00397Etude des pressions au solCas normalTrononCTN Amont(m)CTN Aval(m)PDC(m)CP Amont(m)CP Aval(m)PointPression(m)

1--2189.38179.751.01900229.61228.59100140.23000

2--3179.75175.501.36088228.59100227.23012247.82200

3--4175.50172.303.10906227.23012224.12106350.36924

4--5172.30175.102.05395224.12106222.06711448.71200

5--6175.10180.602.53903222.06711219.52808544.91316

6--1180.60189.380.89366219.52808218.63442636.38905

Cas dincendieTrononCTN Amont(m)CTN Aval(m)PDC(m)CP Amont(m)CP Aval(m)PointPression(m)

1--2189.38179.753.04217229.61226.56783140.23000

2--3179.75175.505.25987226.56783221.30796243.77566

3--4175.50172.3037.46755221.30796183.84041340.54809

4--5172.30175.1030.02272183.84041153.81769425.92714

5--6175.10180.6013.01347153.81769140.80422551.30503

6--1180.60189.382.73720140.80422138.06702652.80925

Dans les deux cas on a des pressions au sol de bonne envergure. Il est tout fait claire quils sont trs satisfaisant, du moment que la zone tudie compte des habitation de type R+3, et daprs lauteur Dupont, la pression doit tre de telle sorte quelle soit de lordre [4+(R+3)*4] dans un paraeil cas. Avec cette formule la pression minimale doit tre entre 20 et 24 mtres et ne doit en aucun cas dpasse les 6 bars.Systme B: Rseau ramifiLe systme B comme on la dcrit plus haut est un systme ramifi, il est constitu de plusieurs ramifications les unes indpendantes des autres. Donc nous procdons au calcul par sous systme. Chaque sous systme se verra attribu un nombre. Au total on a pu dcortiquer le systme B en 4 sous systmes. Le mode de calcul est le mme. La dmarche consiste en:1. recenser la population qui devra tre desservie par le sous systme;2. dterminer les besoins en eau potable; la dotation brute tant de 150l/j/hab.;3. dtermination du dbit de pointe4. calcul du dbit spcifique

;5. calcul du dbit en route

;6. dtermination du dbit transit

6.1 cas conomique

6.2 cas non conomique

avec

La dtermination des dbits de pointes est rgie par les mmes lois que celle quon a expos dans la partie du rseau maill. A cet effet, on rappelle les formules de calcul:Pour dterminer le dbit maximum journalier on applique Qjmax = Kj * Qjmoyavec Kj = 1.2Et pour le calcul du dbit de point on applique Qp = Kp * Qjmoyavec Kp = 2.1Systme B: Rseau ramifiSous systme B.1

Habitats: 49 maisons individuellesHabitants

: 49 x 7 = 343 habitants.Besoins

: 0.150 x 252 = 51.45 m3/jQjmax = 1.2 x 51.45 = 61.74 m3/jQp = 2.1 x 51.45 = 108.05 m3/jQp = 1.25 l/sLe dbit spcifique Qs = 1.25/343 = 3.65 x 10-3 l/s.habLa somme des longueurs = 533 mA) Normal Qs = 3.65 x 10-3 l/s.habCas conomiqueTrononLongueur(m)Dbit de route(l/s)Dbit de Transite(l/s)Dim Calc(mm)Dim Int(mm)Dim Ext(mm)Vitesse(m/s)J0(m/ml)HL(m)HS(m)HT(m)

A-B100,0371,92949,5756,6630,7670,00920,09180,01380,1056

B-C550,2011,81948,1356,6630,7230,00820,44870,06730,5160

C-D400,1461,64345,7456,6630,6530,00670,26620,03990,3061

D-E300,1100,72530,3845500,4560,00410,12230,01830,1406

D-H1060,3870,61427,9735,2400,6320,01001,06050,15911,2196

H-I1100,4020,22116,7727,2320,3800,00470,51620,07740,5936

E-F900,3290,51625,6535,2400,5310,00710,63650,09550,7320

F-G920,3360,18515,3427,2320,3180,00330,30200,04530,3473

Cas non conomiqueTrononLongueur(m)Dbit de route(l/s)Dbit de Transite(l/s)Dim Calc(mm)Dim Int(mm)Dim Ext(mm)Vitesse(m/s)J0(m/ml)HL(m)HS(m)HT(m)

A-B100,0371,94549,7856,6630,7740,00930,09340,01400,1074

B-C550,2011,90949,3156,6630,7590,00900,49440,07420,5685

C-D400,1461,70846,6556,6630,6790,00720,28790,04320,3311

D-E300,1100,77431,4045500,4870,00460,13950,02090,1604

D-H1060,3870,78831,6935,2400,8110,01651,74690,26202,0089

H-I1100,4020,40222,6227,2320,6910,01551,70640,25601,9624

E-F900,3290,66429,0935,2400,6830,01171,05300,15801,2110

F-G920,3360,33620,6827,2320,5780,01090,99830,14981,1481

B) Incendie Q = 1.25 + 16.67 = 17.92 l/s donc Qs = 0.052 l/s.habCas conomiqueTrononLongueur(m)Dbit de route(l/s)Dbit de Transite(l/s)Dim Calc(mm)Dim Int(mm)Dim Ext(mm)Vitesse(m/s)J0(m/ml)HL(m)HS(m)HT(m)

A-B100,52027,196187,11184,62001,0270,00500,05050,00760,0581

B-C552,86024,336181,67184,62000,9690,00450,24680,03700,2838

C-D402,08022,256172,65184,62000,8750,00370,14640,02200,1683

D-E301,5609,464114,671281400,8030,00440,13330,02000,1533

D-H1065,5125,720105,591131250,8730,00600,63130,09470,7260

H-I1105,7200,00063,3167,8750,8720,00991,08880,16331,2521

E-F904,6804,78468.2099,401100,7750,00480,43350,06500,4985

F-G924,7840,00057,9067,8750,7290,00690,63700,09550,7325


A-B100,52027,196187,90184,62001,0360,00510,05130,00770,0590

B-C552,86024,336186,13184,62001,0170,00490,27190,04080,3127

C-D402,08022,256176,07184,62000,9100,00400,15830,02370,1821

D-E301,5609,464118,501281400,8570,00510,15200,02280,1748

D-H1065,5125,720119,621281400,8730,00530,55760,08360,6413

H-I1105,7200,00085,3699,41100,7370,00480,53140,07970,6111

E-F904,6804,784109,801281400,7360,00370,33610,05040,3866

F-G924,7840,00078,0781,4900,9200,00920,84420,12660,9708

Sous systme B.2

Autres besoins:

Salle de cinma ( 3m3/j

Salle de sport (3m3/j

Centre culturel(3m3/j

Salle des ftes(1m3/j

Piscine

(5m3/j

----------------------------------------

Total

(15m3/jQjmax = 1.2 x 15 = 18 m3/jQp = 2.1 x 15 = 31.5 m3/jQp = 0.36 l/sLe dbit spcifique Qs = 0.36/287 = 1.25 x 10-3 l/s.mlLa somme des longueurs = 287mA) Normal Qs = 1.25 x 10-3l/s.habCas conomiqueTrononLongueur(m)Dbit de route(l/s)Dbit de Transite(l/s)Dim Calc(mm)Dim Int(mm)Dim Ext(mm)Vitesse(m/s)J0(m/ml)HL(m)HS(m)HT(m)

A-B2050,2560,24317,6127,2320,4190,00571,16910,17541,3445

B-C820,1030,0568,4727,2320,0970,00030,02510,00380,0288


A-B2050,2560,35921,3827,2320,6180,01242,53900,38092,9199

B-C820,1030,10311,4327,2320,1760,00100,08290,01240,0953

B) Normal Q = 0.36 + 16.67 = 17.03l/s donc Qs = 0.059 l/s.habCas conomiqueTrononLongueur(m)Dbit de route(l/s)Dbit de Transite(l/s)Dim Calc(mm)Dim Int(mm)Dim Ext(mm)Vitesse(m/s)J0(m/ml)HL(m)HS(m)HT(m)

A-B20512,0954,838120,981281400,8930,00551,12860,16931,2979

B-C824,8380,00058,2267,8750,7370,00710,58060,08710,6677


A-B20512,0954,838146,87147,61600,9900,00591,20220,18031,3825

B-C824,8380,00078,5181,4900,9300,00940,76950,11540,8849

Sous systme B.3

Habitats: 32 blocs type R+3Habitants: 32 x (3+1) x 2 x 7 = 1792 habitants.Besoins : 0.150 x 1792 = 268.8 m3/jQjmax = 1.2 x 268.8 = 322.56 m3/jQp = 2.1 x 268.8 = 564.48 m3/jQp = 6.53 l/sLe dbit spcifique Qs = 6.53/1792 = 3.646 x 10-3 l/s.habLa somme des longueurs = 416 mA) Normal Qs = 3.646 x 10-3l/s.habCas conomiqueTrononLongueur(m)Dbit de route(l/s)Dbit de Transite(l/s)Dim Calc(mm)Dim Int(mm)Dim Ext(mm)Vitesse(m/s)J0(m/ml)HL(m)HS(m)HT(m)

A-B2310,8431,13938,0956,6630,4530,00320,73920,11090,8500

B-C080,0290,66229,0445500,4170,00340,02720,00410,0313

C-D850,3100,50625,4035,2400,5210,00680,57800,08670,6647

D-E920,3360,18515,3427,2320,3180,00330,30200,04530,3473


A-B2310,8431,51843,9856,6630,6040,00571,31360,19701,5107

B-C080,0290,67529,3345500,4250,00350,02830,00420,0326

C-D850,3100,64628,6935,2400,6640,01110,94060,14111,0817

D-E920,3360,33620,6827,2320,5780,01090,99830,14981,1481


A-B2313,0032,40571,8981,4900,7800,00661,52400,22861,7526

B-C80,1042,30154,8156,6630,9380,01370,10970,01650,1262

C-D851,1051,19647,9456,6630,7170,00800,68210,10230,7844

D-E921,1960,00028,9545500,4140,00340,30910,04640,3555


A-B2313,0032,40583,0099,41100,6970,00430,99750,14961,1472

B-C80,1042,30155,3567,8750,6660,00580,04630,00690,0532

C-D851,1051,19654,1467,8750,6380,00530,45010,06750,5176

D-E921,1960,00039,0345500,7520,01111,02180,15331,1751

Sous systme B.4

Habitats: 10 blocs type R+3Habitants: 10 x (1+3) x 2 x 7 = 560 habitants.Besoins : 0.150 x 560 = 84 m3/jQjmax = 1.2 x 84 = 100.8 m3/jQp = 2.1 x 84 = 176.4 m/jQp = 2.042 l/sLe dbit spcifique Qs = 2.042/560 = 3.646 x 10-3 l/s.habLa somme des longueurs = 168 mA) Normal Qs = 3.646 x 10-3l/s.habCas conomiqueTrononLongueur(m)Dbit de route(l/s)Dbit de Transite(l/s)Dim Calc(mm)Dim Int(mm)Dim Ext(mm)Vitesse(m/s)J0(m/ml)HL(m)HS(m)HT(m)

A-B470,2060,60627,7845500,3810,00290,13400,02010,1541

B-C530,1930,10611,6435,2400,1090,00030,01590,00240,0183

B-D110,0400,28118,9335,2400,2890,00210,02310,00350,0265

D-E710,2590,14313,4735,2400,1470,00050,03820,00570,0440


A-B470,2060,49329,8335,2400,7180,01290,60820,09120,6994

B-C530,1930,00015,7027,2320,3330,00360,19090,02860,2195

B-D110,0400,25919,5335,2400,3080,00240,02610,00390,0300

D-E710,2590,00018,1727,2320,4460,00650,45890,06880,5277


A-B471,5514,45582,2399,41100,6840,00420,19550,02930,2249

B-C531,7490,00035,0145500,6050,00720,38080,05710,4379

B-D110,3632,34356,9167,8750,7050,00650,07110,01070,0818

D-E712,3430,00040,5245500,8110,01290,91550,13731,0528


A-B471,5514,45587,4799,41100,7740,00530,25030,03750,2879

B-C531,7490,00047,2067,8750,4850,00310,16210,02430,1865

B-D110,3632,34358,7167,8750,7500,00730,08060,01210,0926

D-E712,3430,00054,6367,8750,6490,00550,38980,05850,4483

Sous systme B.5

Habitats: 54 blocs type R+1

: 01 bloc administratif

: 120 lots (logements individuels)Habitants: 54 x (1+1) x 2 x 7 = 1512 habitants.Besoins : 0.150 x 1512 = 226.8 m3/jAutres besoins: 1 m3/jBesoins totaux: 227.8 m3/jQjmax = 1.2 x 227.8 = 273.36 m3/jQp = 2.1 x 84 = 478.38 m3/jQp = 5.54 l/sLe dbit spcifique Qs = 5.54/1900 = 2.92 x 10-3 l/s.habLa somme des longueurs = 1900 mA) Normal Qs = 2.92 x 10-3l/s.habCas conomiqueTrononLongueur(m)Dbit de route(l/s)Dbit de Transite(l/s)Dim Calc(mm)Dim Int(mm)Dim Ext(mm)Vitesse(m/s)J0(m/ml)HL(m)HS(m)HT(m)

A-B3801,1103,77869,3881,4900,7260,00572,17500,32632,5013

B-C1130,3301,06036,7545500,6670,00870,98660,14801,1346

C-D630,1840,38122,0527,2320,6570,01400,88240,13241,0147

D-E960,2800,15414,0127,2320,2650,00230,21960,03290,2525

C-F1100,3210,77531,4345500,4880,00470,51330,07700,5903

F-G2050,5990,32920,4827,2320,5670,01042,13840,32082,4591

B-H470,1372,36554,8956,6630,9400,01380,64830,09720,7455

H-I2070,6040,33220,5827,2320,5720,01062,20160,33022,5318

H-J320,0931,73647,0356,6630,6900,00740,23790,03570,2736

J-K2000,5840,32120,2327,2320,5530,00991,98570,29792,2835

J-L350,1021,15738,3945500,7280,01040,36380,05460,4184

L-M1920,5610,30819,8227,2320,5310,00921,75680,26352,0203

L-N350,1020,59627,5635,2400,6130,00940,33010,04950,3796

N-O1850,5400,29719,4527,2320,5120,00851,57160,23571,8073


A-B3801,1104,27873,8281,4900,8220,00732,78790,41823,2061

B-C1130,3301,20939,2445500,7600,01131,28220,19231,4745

C-D630,1840,46424,3227,2320,7990,02071,30690,19601,5029

D-E960,2800,28018,9027,2320,4830,00760,72600,10890,8348

C-F1100,3210,92034,2345500,5790,00660,72260,10840,8310

F-G2050,5990,59927,6135,2400,6150,00951,94750,29212,2397

B-H470,1372,42755,6056,6630,9650,01450,68260,10240,7850

H-I2070,6040,60427,7535,2400,6210,00972,00510,30082,3059

H-J320,0931,77847,6056,6630,7070,00780,24960,03740,2870

J-K2000,5840,58427,2835,2400,6000,00901,80850,27132,0798

J-L350,1021,20339,1545500,7570,01120,39330,05900,4523

L-M1920,5610,56126,7227,2320,9650,03025,80760,87116,6787

L-N350,1020,64228,6135,2400,6600,01090,38290,05740,4404

N-O1850,5400,54026,2327,2320,9300,02815,19530,77935,9746


A-B3804,56015,528140,64147,61600,9080,00491,87390,28112,1550

B-C1131,3564,35874,5181,4900,8380,00760,86030,12900,9894

C-D630,7561,56844,6945500,9860,01911,20240,18041,3827

D-E961,1520,63428,4135,2400,6510,01061,02180,15331,1751

C-F1101,3203,18663,7167,8750,8830,01021,11660,16751,2841

F-G2052,4601,35341,5245500,8510,01422,91380,43713,3509

B-H470,5649,718111,261131250,9700,00730,34520,05180,3970

H-I2072,4841,36641,7245500,8590,01452,99990,45003,4499

H-J320,3847,13595,3499,41100,9200,00750,24050,03610,2766

J-K2002,4001,32041,0145500,8300,01352,70570,40593,1116

J-L350,4204,75577,8381,4900,9140,00910,31730,04760,3649

L-M1922,3041,26740,1845500,7970,01252,39390,35912,7530

L-N350,4202,45155,8856,6630,9750,01480,51860,07780,5964

N-O1852,2201,22139,4445500,7680,01162,14150,32122,4627


A-B3804,56017,580149,65184,62000,6570,00210,78490,11770,9027

B-C1131,3564,96879,5581,4900,9550,00991,11810,16771,2858

C-D630,7561,90849,3056,6600,7590,00900,56570,08490,6506

D-E961,1521,15238,3145500,7250,01030,98920,14841,1376

C-F1101,3203,78069,3981,4900,7270,00570,63010,09450,7246

F-G2052,4602,46055,9856,6630,9780,01493,05990,45903,5189

B-H470,5649,972112,711131250,9950,00770,36340,05450,4180

H-I2072,4842,48456,2556,6630,9880,01523,15040,47263,6229

H-J320,3847,30896,4999,41100,9420,00790,25230,03790,2902

J-K2002,4002,40055,2956,6630,9540,01422,84150,42623,2677

J-L350,4204,94479,3681,4900,9510,00980,34300,05140,3944

L-M1922,3042,30454,1856,6630,9160,01312,51390,37712,8910

L-N350,4202,64057,9967,8750,7320,00700,24390,03660,2805

N-O1852,2202,22053,1856,6630,8830,01222,24890,33732,5862

Etude de la conduite damene du rservoir au point A:NB: cette conduite ne concerne que les sous systmes B.1et B.3Le point A est le point dentre des sous systmes 1 et 3Q= 1.25 + 6.53 = 7.78 l/sSachant que et que V = 1m/s alors D = 99.70mm do Dn = 110mm Donc Vmoy relle = 0.82m/s Calcul des pressions au sol[Cas conomique]sous systmeTrononCte du terrain naturel (m) PDH(m)Cte pizomtrique (m)PointPression(m)

Amont Aval AmontAvalNcessairedisponible

B.1A-B197,900197,2000,106203,716203,610A>35,82

B6,52

B-C197,200197,2500,516203,610203,094C6,41

C-D197,250197,4100,306203,094202,788D5,84

D-E197,410197,3000,141202,788202,648E5,38

D-H197,410197,1201,220202,788201,569H5,38

H-I196,520196,4500,594201,569200,975I5,05

E-F197,300196,5000,732202,648201,916F5,35

F-G196,500196,2300,347201,916201,568G5,42

B.2A-B197,56194,81,3445204,3100202,9655A>36,75

B9,51

B-C194,8194,50,0288202,966202,937C8,17

B.3A-B197,900186,1000,8500204,3100203,4600A6,41

B>1618,21

B-C186,100185,750,0313203,460203,429C17,36

B-D185,75184,60,6647203,429202,7640D17,68

D-E184,6184,250,3473202,7640202,4167E18,16

B.4A-B204,600202,80,1689207,2500207,0811A2,65

B>37,05

B-C202,8200,20,9254207,081206,156C4,28

B-D202,8198,60,1828206,156205,973D3,36

C-E200,2198,520,0491206,156206,107E5,96

B.5A-B187,3179,62,1550201,810199,655A>1214,51

B-C179,6180,10,9894199,655198,666B20,05

C-D180,1180,31,3827198,666197,283C18,57

D-E180,3176,651,1751197,283196,108D16,98

C-F180,1176,51,2841198,666197,381

F-G176,5176,63,3509197,381194,031F20,88

B-H179,6178,20,3970199,655199,258H21,06

H-I178,2177,83,4499199,258195,808I18,01

H-J178,2178,250,2766199,258198,981J20,73

J-K178,25177,93,1116198,981195,870K17,97

J-L178,25178,680,3649198,981198,617L19,94

L-M178,68178,12,7530198,617195,864M17,76

L-N178,1178,40,5964198,617198,020N19,62

N-O178,4176,92,4627198,020195,557O18,66

[Cas non conomique]sous systmeTrononCte du terrain naturel (m) PDH(m)

Cte pizomtrique (m)

Point

Pression(m)

Amont Aval

AmontAvalNcessairedisponible

B.1A-B197,900197,2000,107204,810204,703A>46,91

B7,61

B-C197,200197,2500,569204,703204,372C7,50

C-D197,250197,4100,331204,372204,211D7,12

D-E197,410197,3000,160204,211202,202E6,80

D-H197,410197,1202,009204,211202,249H6,80

H-I196,520196,4501,962202,249201,038I5,73

E-F197,300196,5001,211202,202201,054F4,90

F-G196,500196,2301,148201,054201,054G4,55

B.2A-B197,56194,82,9200204,3100201,3900A>36,75

B9,51

B-C194,8194,50,0900201,390201,300C6,59

B.3A-B197,900186,1001,5100204,3100202,8000A6,41

B>1618,21

B-C186,100185,750,0320202,800202,768C16,70

C-D185,75184,61,0800202,768201,6880D17,02

D-E184,6184,251,1400201,6880200,5480E17,09

B.4A-B204,600202,80,6900207,2500206,5600A2,65

B>167,05

B-C202,8200,20,2200206,560206,340C3,76

B-D202,8198,60,0300206,340206,310D3,54

D-E200,2198,520,5200206,340205,820E6,14

B.5A-B187,3179,60,9027201,810200,907A>1214,51

B-C179,6180,11,2858200,907199,621B21,31

C-D180,1180,30,6506199,621198,971C19,52

D-E180,3176,651,1376198,971197,833D18,67

C-F180,1176,50,7246199,621198,897

F-G176,5176,63,5189198,897195,378F22,40

B-H179,6178,20,4180200,907200,489H22,29

H-I178,2177,83,6229200,489196,866I19,07

H-J178,2178,250,2902200,489200,199J21,95

J-K178,25177,93,2677200,199196,931K19,03

J-L178,25178,680,3944200,199199,805L21,12

L-M178,68178,12,8910199,805196,914M18,81

L-N178,1178,40,2805199,805199,524N21,12

N-O178,4176,92,5862199,524196,938O20,04

Les pressions au sol sont assurs sauf pour le sous systme B-4. Pour remdier cela on prvoit:1. Soit la ralisation dune bche eau dune capacit de 50m3, qui devra tre place de telle sorte que son niveau pizomtrique doit dpass le point le plus dfavorable du sous systme B-4, en loccurrence le point D, dau moins 14m deau, c'est--dire qui pourra donn au point de jonction A une cte pizomtrique dau moins 220m (schma n 1). Sous systme B.4

Schma n12. Soit amener leau depuis le rservoir qui se situe plus dun kilomtre du site et sur une cte assez leve qui, sana doute, pourra desservir le sous-systme B.4 sans aucun problme (schma n 2).

Schma n2Equipement du rseauA. Tuyauterie Notre rseau est constitu de conduites de diffrents diamtres allant du 27 au 75. Les conduites sont de type PVC. Les tuyaux en (PVC) polychlorure de vinyle non plastifi sont opaques et de couleur gris fonc.B. Organes accessoires Une canalisation exige divers organes accessoires, dont les rpincipaux sont:1. Robinets-vannes opercule2. Vanens papillons3. Dispositif de scurit de tte de canalisation4. Manoeuvre des robinets5. Colliers de prise en charge6. Robinets de branchement7. Clapets de retenue8. Crpines.Liste bibliographique1. La distribution deau dans les agglomrations urbaines et rurale; Cyril GOMELLA et Henri GUERREE; dition EYROLLES 1980.2. Hydraulique Urbaine; DUPONT; dition EYROLLES.3. Hydraulique gnrale et applique; M. CARLIER; ; dition EYROLLES. EMBED Equation.3

EMBED Equation.3

1

2

3

4

5

6

65m

5.095 l/s

151.5m

3.805 l/s

231m

3.29 l/s

115m

1.64 l/s

184m

4.26 l/s

182m

12.475 l/s

170m

4.065 l/s

17.57 l/s

1.56 l/s

0.37 l/s

1

2

3

4

5

6

65m

5.031 l/s

151.5m

3.741 l/s

231m

2.848 l/s

115m

2.082 l/s

184m

4.702 l/s

182m

12.539 l/s

170m

3.687 l/s

17.57 l/s

1.56 l/s

0.37 l/s

1

2

3

4

5

6

65m

12.095 l/s

151.5m

10.805 l/s

231m

13.79 l/s

115m

5.14 l/s

184m

7.76 l/s

182m

19.475 l/s

170m

7.565 l/s

31.57 l/s

1.56 l/s

0.37 l/s

1

2

3

4

5

6

65m

8.935 l/s

151.5m

7.645 l/s

231m

10.477 l/s

115m

8.453 l/s

184m

11.073 l/s

182m

22.635 l/s

170m

7.413 l/s

31.57 l/s

1.56 l/s

0.37 l/s

40m

30m

R2000

E

C

55m

90m

106m

B

10m

A

F

92m

110m

D

H

I

G

R2000

205m

B

A

82m

C

E

R2000

A

B

D

231m

C

8m

85m

92m

R2000

C

A

B

D

E

53m

47m

11m

71m

R2000

C

A

B

D

E

63m

380m

113m

96m

D

F

G

110m

205m

H

J

L

M

K

I

N

O

47m

32m

35m

35m

185m

192m

200m

207m

R2000

C

A

B

D

E

53m

47m

11m

71m

B.E

R2000

C

A

B

D

53m

47m

11m

71m

SP

R2000

E

Perte de charge en mtre

_1353379067.unknown

_1353379069.unknown

_1353379070.unknown

_1353379072.unknown

_1353379068.unknown

_1353379065.unknown

_1353379066.unknown

_1353379064.unknown

calc

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