do an cap thoat nuoc trong nha

Chng 1

Thuyt minh n mn hc mng li cp thot nc trong nh GVHD: ThS. V THANH HUNH ANH

MC LC

Chng 1Trang

GII THIU CHUNG

1.1 NHIM V THIT K3

1.2 C IM CN H3

1.3 S LIU THIT K3

1.3.1 H thng cp nc3

1.3.2 H thng thot nc3

1.4 CU TRC BO CO4

Chng 2

TNH TON THIT K H THNG CP NC

2.1 THNG S THIT K BAN U5

2.2 VCH TUYN MNG LI CP NC BN TRONG NH5

2.3 XC NH LU LNG DNG NC CA NGI NH5

2.4 CHN NG H O NC6

2.5 TNH TON THY LC MNG LI NG NG6

Chng 3

TNH TON THIT K H THNG THOT NC

3.1 TNH TON THY LC NG THOT NC THI9

3.1.1 ng nhnh A1A thot nc t chu ra mt v hng sen10

3.1.2 ng nhnh A3A thot nc t chu git10

3.1.3 Tnh ng ng AB10

3.1.4 Tnh ng nhnh B1B thot nc t chu ra mt10

3.1.5 Tnh ng nhnh B2B thot nc t bn tm10

3.1.6 Tnh ng ng BC11

3.1.7 Tnh ng nhnh C1C thot nc t chu ra mt v hng sen11

3.1.8 Tnh ng ng CD11

3.1.9 Tnh on ng D1D11

3.1.10 Tnh on ng D1E12

3.1.11 Tnh ng nhnh E2E thot nc t chu ra mt v hng sen12

3.1.12 Tnh on ng EF12

3.2 TNH TON THY LC NG THOT PHN12

3.2.1 ng knh ng nhnh thot phn12

3.2.2 ng knh ng ng thot phn AD13

3.3 NG THNG HI13

3.4 NG X14

3.4.1 ng x DEE3 dn phn t h x tng 2, 3, 4 ti b t hoi14

3.4.2 ng x EF dn nc thi ca ton b ngi nh14

3.5 TNH TON B T HOI14

3.6 TNH TON H THNG THOT NC MA TRN MI16

3.6.1 Xc nh lu lng nc ma, ng knh ng ng thu nc ma16

3.6.2 Tnh ton mng dn nc (Sn)16

Chng 4

TNH TON KINH T

4.1 TNH TON CHI PH CP NC18

4.2 TNH TON CHI PH THOT NC 19

4.3 CHI PH B T HOI, GING THM19

4.4 CHI PH KHC19

4.5 TNG CHI PH19

TI LIU THAM KHO20

Chng 1

GII THIU CHUNG1.1 NHIM V THIT K

Nc l mt nhu cu khng th thiu i vi s tn ti, i sng sinh hot, i sng cng nghip, sn xut ca con ngi. Chnh v vy trong bt c th no, hay n v th no, vn cp thot nc lun l mt trong nhng vn nhn c s quan tm hng u. Vi tnh hnh thc t hin nay, vn cp thot nc trong nh ca mi h gia nh trn a bn thnh ph H Ch Minh cng ang gp nhiu kh khn, lng nc cp hng ngy vn cn thiu hoc do p lc nc khng mnh.Thit k h thng cp thot nc trong nh c nhim v a nc t mng li ngoi nh n mi thit b, dng c v sinh hoc my mc sn xut trong nh cung cp cho ngi tiu dng v cho my mc sn xut. ng thi c nhim v thu v dn nc thi t cc thit b, dng c v sinh hoc my mc sn xut trong nh v nc ma t trn mi nh ra khi nh.

V vy, n ny c thc hin vi mc ch gp mt kin trong vic a ra nhng gii php kh thi gip gii quyt vn trn. n ny s thit k h thng cp thot nc cho cn h gia nh vi qui m 3 tng v 1 tng mi.1.2 C IM CN H

Cn h gm 4 tng lu, mt tng mi.

Tiu chun dng nc 200 l/ng.ng

Dng c v sinh:

Chu ra mt:4 ci

Chu ra bp:1 ci

X bt:4 ci

Vi sen:3 ci

Chu git:1 ci

Bn tm:1 ci

1.3 S LIU THIT K1.3.1 H thng cp nc

p lc ng ng bn ngoi: H = 20 m (Hc).

ng knh ng cp nc bn ngoi: D = 500 mm (Dc).

Chiu cao t trc ng ng cp nc bn ngoi n mt ng 1 m (hc-).

Chiu di t trc ng ng cp nc bn ngoi n mp mng nh 7 m (Lc).

1.3.2 H thng thot nc

ng ng thot nc bn ngoi: D = 1000 m

Chiu cao t trc ng ng thot nc bn ngoi n mt ng: h = 2 m.

Chiu di t trc ng ng thot nc bn ngoi n mp mng nh 8 m.

1.4 CU TRC BO COChng 1 GII THIU CHUNGChng 2 TNH TON MNG LI CP NC

Chng 3 TNH TON MNG LI THOT NC Chng 4 TNH TON KINH TChng 2

TNH TON THIT K H THNG CP NC

2.1 THNG S THIT K BAN U

Theo nh gi s b, cc thng s thit k ban u nh sau.

H thng cp nc cho ngi nh

Hc =20 m

Dc =500 m

hc- =1 m

Lc =7 m

Nh c 4 tng lu. Theo gio trnh cp thot nc (Cp thot nc, Trn Hiu Nhu), p lc s b ca cn nh l 16 m.

Ct p ca ng ng cp nc bn ngoi nh l 20 m. Theo ct p ny, dng h thng cp nc n gin v p lc ng ng cp nc bn ngoi nh hon ton m bo a nc n mi thit b v sinh trong nh, k c nhng thit b v sinh cao nht v xa nht ca ngi nh.

Hnh 2.1 S h thng cp nc.

Trong n ny, ta thit k h thng cp nc cho cn h theo phng n h thng cp nc n gin. H thng ny c p dng trong trng hp p lc ng ng cp nc bn ngoi nh hon ton m bo a nc dn,n mi thit b v sinhbn trong nh, k c nhng dng c v sinh v tr cao v xa nht ca ngi nh (dng c v sinh bt li nht).

2.2 VCH TUYN MNG LI CP NC BN TRONG NHDa theo c im cn h v s lng cc thit b v sinh bn trong cn h, tin hnh vch tuyn ng ng cp nc cho ngi nh. Phn vch tuyn ng ng cp nc v v s khng gian c th hin trong bng v k thut.

2.3 XC NH LU LNG DNG NC CA NGI NHi vi nh gia nh, lu lng nc c tnh nh sau:

Trong

q: Lu lng nc tnh ton cho tng on ng, l/s

a: i lng ph thuc vo tiu chun dng nc, i vi tiu chun dung nc l 200 l/ng.ng, gi tr ca a = 2,14.

N: tng s ng lng ca cc thit b v sinh, c trnh by trong bng 2.1

Bng 2.1 Tng s ng lng ca cc thit b v sinhThit b v sinhS lngng lng (N)

Chu ra mt40,331,32

H x c thng ra40,52

Chu ra nh bp111

Vi tm hng sen30,672,01

Chu git111

Bn tm11,51,5

Tng cng148,83

K: h s iu chnh ph thuc vo tng s ng lng N, ly theo bng 18.3 (Cp thot nc, Trn Hiu Nhu) , K = 0,002.

Thay vo (1), ta c lu lng nc cn l:

2.4 CHN NG H O NCng h o nc cn phi da vo kh nng vn chuyn ca n. Kh nng vn chuyn ca mi loi ng h o nc khc nhau v thng biu hin bng lu lng c trng ca ng h, phi tha mn iu kin sau.Qng 2 QtrTrong :

Qng: lu lng nc ngy m ca ngi nh, m3/ng;

Qtr: lu lng nc c trng ca ng h o nc , m3/h.

Chn ng h o nc theo lu lng tnh ton da vo bng 17.1 (Trn Hiu Nhu, Cp Thot Nc, NXB Khoa hc v K thut, 2007, trang 206).

Qmin = 0,04 (l/s) < qtt = 0,57 (l/s) < qmax = 0,7 (l/s)( ta chn ng h loi cnh qut (BK) v c ng h l 20 mm.

Theo bng 17.2 (Trn Hiu Nhu, Cp Thot Nc, NXB Khoa hc v K thut, 2007, trang 206), ng h BK20 c sc khng S = 5,2, tn tht p lc qua ng h:

Nh vy chn ng h BK20 l hp l.

2.5 TNH TON THY LC MNG LI NG NG

T s lng cc thit b v sinh trn tng ng ng, ta c ng lng ca cc on ng => dng cng thc (1) tnh ca tng on ng.

Dng bng tra thy lc dng cho ng nha tng hp ta chn ng knh ng theo vn tc kinh t 0,5 m/s < v < 1,5 m/s, t bit c gi tr tn tht p lc trn tng on ng.Bng 2.2 Bng tnh ton thy lc ng ngon ngS lng thit b v sinhNqtt(l/s)d

(mm)v

(m/s)iL(m)h = i.l(m)

A1-A21 RM0.330.120200.60.0440.700.03

A2-A1 RM + 1 HS10.202201.240.1610.800.13

A3-A41 CG10.202201.240.1610.900.14

A4-A1 CG + 1 HX1.50.245201.490.2221.000.22

A-B1 CG + 1 HX + 1 RM + 1 HS2.50.312251.070.0913.300.30

B1-B1 RM0.330.120200.60.0440.800.03

B2-B31 BT1.50.245201.490.2220.700.16

B3-B1 BT + 1 HX1.830.269201.490.2221.000.22

B-C1 CG + 2 HX + 2 RM + 1 BT + 1 HS4.830.427251.380.1433.600.51

C1-C21 RM0.330.120200.60.0440.700.03

C2-C1 RM + 1 HS0.830.185200.940.0990.800.08

C3-C1 HX0.50.146200.750.0650.900.06

C-D1 CG + 3 HX + 3 RM + 1 BT + 2 HS6.330.486320.930.0523.300.17

D1-D1 CG + 3 HX + 3 RM + 1 BT + 2 HS6.330.486320.930.0522.000.10

E-D11 CG + 3 HX + 3 RM + 1 BT + 2 HS + 1 CB7.330.522321.020.0620.800.05

E3-E21 HX0.50.146200.750.0650.700.05

E2-E11 HX + 1 HS1.170.218201.240.1610.700.11

E1-E1 HX + 1 HS + 1 RM1.50.245201.240.1610.400.06

E-F1 CG + 4 HX + 4 RM + 1 BT + 3 HS + 1 CB8.830.571321.110.07210.700.77

ThS.Nguyn Th Hng, Cc bng tnh ton thy lc, NXB Xy dng, 2007,

Trong :

CG:chu git

HX:h x c thng ra

RM:chu ra mt

BT:bn tm

HS:hng sen trong phng ring

CB:chu ra nh bp

p lc cn thit ca ngi nh tnh ton nh sau:

H = hhh + hh + ht + h + hcbTrong

: p lc cn thit ca ngi nh (m);

: cao hnh hc a nc t trc ng ng cp nc bn ngoi n dng c v sinh bt li nht (cao nht v xa nht) (m), hhh tnh n thit b s dng nc cao nht v xa nht l chu git;

: Tn tht p lc qua ng h o nc (m), hh = 1,69 m;

: p lc t do cn thit cc dng c v sinh hoc cc my mc dng nc, c chn theo tiu chun (m), htd = 3 m;

h: Tng tn tht p lc do ma st theo chiu di ca mng li cp nc trong nh theo tuyn tnh bt li nht (m);

: Tn tht p lc cc b theo tuyn ng tnh ton bt li nht ca mng li cp nc bn trong nh (m).

hhh = hc- + hL1 + hL2 + hL3 + hCG = 1+ 3,3 + 3,6 + 3,3 + 1 = 12,2 (m)

hc-:chiu cao t trc ng n mt ng= 1 m.

hL1:chiu cao t mt t n sn tng 1= 3,3 m.

hL2:chiu cao t sn tng 1 n sn tng 2= 3,6 m.

hL3:chiu cao t sn tng 2 n sn tng 3= 3,3 m.

hCG:chiu cao ca chu git= 1 m.

Chiu di bt li nht (hbl)= FE + ED1 + D1D + DC + CB + BA + AA4 + A4A3

= 10,7+ 0,8+ 2 + 3,3+ 3,6 + 3,3 + 1 + 0,9 = 25,6 (m).

Ta c h = (5 20)% hbl, chn 10%:

h = 10% hbl = 10% x 25,6 = 2,56 (m).

Ta c hcb = (20 30)% h, chn 20%:

Hcb = 20% h = 20% x 2,56 = 0,51 (m).

H = hhh+ hh + htd + h+ hcb

= 12,2+ 1,69+ 3 + 2,56+ 0,51 = 19,69 (m).

H = 19,69 (m) < Hc = 20 m

Vy h thng cp nc trn l hp l.

Chng 3

TNH TON THIT K H THNG THOT NC

3.1 TNH TON THY LC NG THOT NC THI

ng thot nc thi chia thnh hai ng chnh, mt ng thot nc thi sinh hot v mt ng thot phn. Cch b tr h thng thot nc thi v thot phn c th hin trong bn v k thut s h thng thot nc thi v thot phn.

Lu lng nc tnh ton cc on ng thot nc trong nh c xc nh theo cng thc:

Trong :

qtt: lu lng nc thi tnh ton (l/s);

qc: lu lng nc cp tnh ton theo cng thc ;

: lu lng nc thi ca thit b v sinh c lu lng nc thi ln nht ca on ng tnh ton ly theo bng 23.2 (Cp thot nc, Trn Hiu Nhu, 2007, trang 295).Ta c lu lng nc thi tnh ton ca cc thit b v sinh:Thit b v sinhLu lng nc thi

(l/s)

Chu ra mt0,1

H x c thng ra1,6

Chu ra nh bp1

Vi tm hng sen0,2

Chu git0,33

Bn tm1,1

(Cp thot nc, Trn Hiu Nhu, 2007, bng 23.2, trang 295).

3.1.1 ng nhnh A1A thot nc t chu ra mt v hng sen

Chn ng knh ng l 50 mm, y ti a 0,5d, dc i = 0,035

(qnt = 1,52 l/s, vnt = 0,78 m/s

Da vo biu h/D, xc nh li h/D = 0,34 < 0,5, tha iu kin.

Tra biu hnh c ( B = 0,8 ( vtt = B x vnt = 0,8 x 0,78 = 0,624 m/s.

3.1.2 ng nhnh A3A thot nc t chu git


( qnt = 1,52 l/s, vnt = 0,78 m/s


Tra biu h/D ( B = 0,9 ( vtt = B x vnt = 0,9 x 0,78 = 0,702 m/s > 0,7m/s.

Nh vy ng knh ng nhnh A3A = 50 mm l t yu cu.

3.1.3 Tnh ng ng AB

Lu lng nc thi trong ng ng

Tra bng xc nh cc thng s cho ng ng ta chn ng ng c ng knh d = 75 mm, vn tc nc trong ng ng v = 1 m/s < 4 m/s.3.1.4 Tnh ng nhnh B1B thot nc t chu ra mt


(qnt = 1,52 l/s, vnt = 0,78 m/s


Tra biu h/D ( B = 0,7 ( vtt = B x vnt = 0,7 x 0,78 = 0,55 m/s.

3.1.5 Tnh ng nhnh B2B thot nc t bn tm


(qnt = 3,78 l/s, vnt = 0,85 m/s


Tra biu h/D ( B = 0,4 ( vtt = B x vnt = 0,9 x 0,78 = 0,702 m/s > 0,7m/s.

3.1.6 Tnh ng ng BC


Tra bng xc nh cc thng s cho ng ng ta chn ng ng c ng knh d = 75 mm, vn tc nc trong ng ng v = 1,5 m/s < 4 m/s.

3.1.7 Tnh ng nhnh C1C thot nc t chu ra mt v hng sen

Chn ng knh ng l 50 mm, y ti a 0,5d; dc i = 0,035

( qnt = 1,52 l/s, vnt = 0,78 m/s


Tra biu h/D ( B = 0,8 ( vtt = B x vnt = 0,8 x 0,78 = 0,624 m/s.3.1.8 Tnh ng ng CD


Tra bng xc nh cc thng s cho ng ng ta chn ng ng c ng knh d = 75 mm, vn tc nc trong ng ng v = 1,5 m/s < 4 m/s.

3.1.9 Tnh on ng D1D


( qnt = 4,43 l/s, vnt = 1,02 m/s


Tra biu h/D ( B = 0,92 ( vtt = B x vnt = 0,92 x 1,02 = 0,938 m/s.3.1.10 Tnh on ng D1E

Chn ng knh ng l 75 mm, y ti a 0,5d; dc i = 0,035 ( qnt = 4,43 l/s, vnt = 1,02 m/s


Tra biu h/D ( B = 0,92 ( vtt = B x vnt = 0,92 x 1,02 = 0,938 m/s.3.1.11 Tnh ng nhnh E2E thot nc t chu ra mt v hng sen


( qnt = 1,52 l/s, vnt = 0,78 m/s


Tra biu h/D ( B = 0,8 ( vtt = B x vnt = 0,85 x 0,78 = 0,663 m/s.3.1.12 Tnh on ng EF


( qnt = 4,43 l/s, vnt = 1,02 m/s


Tra biu h/D ( B = 0,94 ( vtt = B x vnt = 0,94 x 1,02 = 0,96 m/s.3.2 TNH TON THY LC NG THOT PHN

3.2.1 ng knh ng nhnh thot phn

S lng h x cc tng bng nhau, v vy tnh ton thy lc cho ng nhnh thot phn cc tng (A4A, B3B, C3C v E3E) tng t nh nhau.

.

= 1,5 (l/s)

(

Chn ng knh ng nhnh thot phn l 100 mm, y cho php ti a 0,5d, dc tiu chun 0,02.( qnt = 7,44 l/s, vnt = 0,93 m/s.


Tra biu hnh h/D ( B = 0,78 ( vtt = B x vnt = 0,78 x 0,93 = 0,73 m/s > 0,73m/s.

Nh vy ng knh ng nhnh thot phn d = 50 mm l t yu cu.

3.2.2 ng knh ng ng thot phn ADChn ng knh ng ng thot phn bng nhau t trn xung di

.

= 1,5 (l/s).(

Chn ng knh ng ng thot phn l 100 mm.

Gc ni gia ng nhnh v ng ng l 45oC.

3.3 NG THNG HITheo quy nh ng knh ng thng hi nh hn hoc bng ng knh ng ng thot nc.

Chn ng knh ng thng hi D = 50 mm.

Trn nc ng thng hi c mt chp hnh nn che ma bng l thp dy 1,5 mm, v c ca thng hi.

ng thng hi t cao hn nc nh 0,7 m.

3.4 NG X3.4.1 ng x DEE3 dn phn t h x tng 2, 3, 4 ti b t hoi

Chn ng knh ng x d = 100 mm, i = 0,02 ( qnt = 7,44 l/s, vnt = 0,93 m/sqtt = 1,75 l/s;


Tra biu hnh c ( B = 0, 8 ( vtt = B x vnt = 0,8 x 0,93= 0,744 m/s > 0,7m/s.

Nh vy ng knh ng nhnh thot phn d = 100 mm l t yu cu.3.4.2 ng x EF dn nc thi ca ton b ngi nh

ng knh ng x chn ln hn ng knh ng ng, chn ng knh ng x dEF = 125 mm, dc i = 0,015, y h/D = 0,5d.( qnt = 11,16 l/s, vnt = 0,91 m/s

qc = 0,571 (l/s),

= 1,5 (l/s).(


Tra biu hnh c ( B = 0,74 ( vtt = B x vnt = 0,74 x 0,91 = 0,81 m/s > 0,7m/s.

Nh vy ng knh ng nhnh thot phn d = 125 mm l t yu cu.

3.5 TNH TON B T HOI

S dng b t hoi khng ngn lc, nc thi ca ng dn phn vo b trc khi thot ra ngoi ng ng thot nc thnh ph.

Dung tch b t hoi

Wb = Wn + Wc

Trong :

Wn : th tch nc ca b (m3)

Wc : Th tch cn ca b (m3)

Wn c th ly bng 1 3 ln lu lng nc thi ngy m chy vo hm t hoi (Wn).

Lng nc thi vo hm t hoi gm nc thi t h x.

H x m hm t hoi phc v l 4.

Gi n l s ln i v sinh m 1 ngi i trong mt ngy, chn n = 4.

Lu lng nc thi ngy m:

Vi qo: lu lng nc thi mt ln s dng h x qo = 6 8 lt (theo ph lc 1 TCVN 4513 : 1988)

Wn c th ly bng 1 3 ln lng nc thi ngy m ty thuc vo yu cu v sinh v l do kinh t. Ta chn Wn = 3Qt, do :

Wn = 3 x Qt = 3 x 0,128 = 0,384 (m3)

Th tch cn ca b

Wc =

Trong

a:lng cn trung bnh ca mt ngi thi ra mt ngy, a = 0,5 l/ng.ng, chn a = 0,8 l/ng.ng.

T:thi gian gia 2 ln ly cn, chn T = 3 nm = 1080 ngy.

W1, W2: m cn ti vo b v ca cn khi ln men tng ng l 95% v 90%.

b:h s k n vic gim th tch cn khi ln men (gim 30%) v ly 0,7.

c:h s k n vic li 1 phn cn ln men khi ht cn gi li vi sinh vt gip cho qu trnh ln men cn c nhanh chng, d dng, li 20%; c= 1,2.

N:s ngi m b phc v, N= 6 ngi

Chiu su ti thiu ca b l 1,3 m

( W = Wn + Wc = 0,4 + 2,2 = 2,6 (m3) < 10 m3Thit k b t hoi khng ngn lc c 2 ngn (1 ngn cha v 1 ngn lng) vi cc thng s thit k nh sau:

Chiu su b H = 1,5 m.

Chiu cao phn thu kh h = 0,5 m.

Chiu rng b B = 1 m.

Chiu su lp nc hn = 1 m.

Chiu di b L = 1,8 m.

Chiu di ngn lng th 1 L1 = 1 m.

Chiu di ngn lng th 1 L2 = 0,8 m.3.6 TNH TON H THNG THOT NC MA TRN MI

3.6.1 Xc nh lu lng nc ma, ng knh ng ng thu nc ma

Lu lng tnh ton nc ma trn din tch mi:

Trong

Q:lu lng nc ma, l/s.

F:din tch thu nc ma, m2. K:h s, ly bng 2.

q5:cng ma l/s.ha tnh cho a phng c lng ma 5 pht v chu k vt qua cng ma tnh ton l 1 nm. Ti Tp H Ch Minh cng ma q5 = 496 l/s.ha.

F = (3,700 x 3,730) + (3,090 x 3,730) = 25,3 (m2)

Thit k 1 ng ng ng thot nc ma c ng knh d = 100 mm( q = 20 l/s (lu lng nc ma ti a i vi ng d = 100).

q : Lu lng tnh ton ca 1 ng ng thu nc ma theo bng 9 (TCVN 4474 :1987).

Q < q ( chn 1 ng ng ng thot nc ma trn mi l hp l.

3.6.2 Tnh ton mng dn nc (Sn)

Mng dn nc ca cng trnh c thit k bng btng ct thp c dng hnh ch nht. Kch thc mng dn nc trn c s lng nc ma thc t chy trn mng dn n phu thu v phi da trn c s tnh ton thc t.

Lu lng nc ma tnh ton qm chy n phu thu c xc nh theo cng thc sau:

Trong :

F : din tch mi thc t trn mt bng m mt phu phc v, tc l din tch thu nc ca mt ng ng.

: h s dng chy trn mi ly bng 1.

h5 : lp nc ma tnh ton ng vi thi gian ma 5 pht v chu k vt qu cng tnh ton p = 1 nm. Ti thnh ph H Ch Minh h5 = 10 cm = 0,1 m.

(

T qm tra biu tnh ton thy lc cho mng ch nht btng trt va hnh 24.10 (Gio trnh cp thot nc trong nh, 2007, trang 308), ta xc nh cc ch s ca mng nh sau:

- Chiu rng mng :

b = 50 cm

- su u tin ca mng: h = 5 cm

- Vn tc dng chy : v = 0,4m/s

- dc lng mng : i = 0,002

Chng 4

TNH TON KINH T

4.1 TNH TON CHI PH CP NCChi ph tnh ton da vo bng gi ng nha HDPE ca cng ty nha Bnh Minh a ra ngy 15/11/2010.

Bng 4.1 Chi ph mua ng cp ncon ngChiu di

(m)d

(mm)n gi

(ng/mt)Thnh tin

A1-A20,70208.5806.006

A2-A0,80208.6006.880

A3-A40,90208.6007.740

A4-A1,00208.6008.600

A-B3,302513.64045.012

B1-B0,80208.6006.880

B2-B30,70208.6006.020

B3-B1,00208.6008.600

B-C3,602513.64049.104

C1-C20,70208.6006.020

C2-C0,80208.6006.880

C3-C0,90208.6007.740

C-D3,303221.01069.333

D1-D2,003221.01042.020

E-D10,803221.01016.808

E3-E20,70208.6006.020

E2-E10,70208.6006.020

E1-E0,40208.6003.440

E-F10,703221.010224.807

Tng cng533.930

4.2 TNH TON CHI PH THOT NC Bng 4.2 Chi ph mua ng thot ncon ngChiu di(m)d

(mm)n gi(ng/mt)Thnh tin

A1-A1,505050.93076.395

A3-A1,905050.93096.767

A-B3,3075114.290377.157

B1-B0,805050.93040.744

B2-B1,7075114.290194.293

B-C3,6075114.290411.444

C1-C1,505050.93076.395

C-D3,3075114.290377.157

D1-D2,0075114.290228.580

E-D10,8075114.29091.432

E2-E1,105050.93056.023

E-F11,7075114.2901.337.193

Tng cng3.363.580

4.3 CHI PH B T HOI, GING THM

Chi ph xy dng b t hoi:1,500,000 (VN)

Chi ph xy dng ging thm:1,500,000 (VN/ging)

4.4 CHI PH KHC

ng h: 500,000 VN

Cc chi ph mua t, ct, van,: 1,000,000 (VN)

4.5 TNG CHI PH

Tng chi ph cp thot nc trong nh:

533.930 + 3.363.580+ 1.500.000 + 1.500.000 x 2 + 500.000 + 1.000.000 = 9.897.510(VN)TI LIU THAM KHO

1. Nhu, 2002, Cp Thot Nc, Nh xut bn Khoa hc v K thut.

2. B xy dng, 2008, Gio Trnh Cp Thot Nc Trong Nh, Nh xut bn Xy dng, H Ni.

3. Uyn, 2003, Cc Bng Tnh Ton Thy Lc Cng V Mng Thot Nc, Nh xut bn Xy dng, H Ni.

4. TCVN 4513 : 1988 Cp nc bn trong Tiu chun thit k.

5. TCVN 4474 : 1987 Thot nc bn trong Tiu chun thit k.

6. Catologe cc loi ng ca Cng ty nha Bnh Minh.

Thit b v sinh

ng h

Nc vo

SVTH: NG QUANG TRUNG14

_1353605620.unknown

_1354706771.unknown

_1354709393.unknown

_1354709846.unknown

_1354818727.unknown

_1354818736.unknown

_1354819648.unknown

_1354819653.unknown

_1354818774.unknown

_1354818734.unknown

_1354816078.unknown

_1354818720.unknown

_1354818643.unknown

_1354799449.unknown

_1354709682.unknown

_1354709694.unknown

_1354709675.unknown

_1354708702.unknown

_1354708931.unknown

_1354709348.unknown

_1354708792.unknown

_1354708474.unknown

_1354708683.unknown

_1354708251.unknown

_1354445874.unknown

_1354706070.unknown

_1354706076.unknown

_1354448444.unknown

_1354705568.unknown

_1353957804.unknown

_1353957993.unknown

_1353959931.unknown

_1353961154.unknown

_1353959923.unknown

_1353957985.unknown

_1353651426.unknown

_1353652096.unknown

_1353606184.unknown

_1353606272.unknown

_1353435581.unknown

_1353603742.unknown

_1353603808.unknown

_1353605599.unknown

_1353605319.unknown

_1353603793.unknown

_1353498080.unknown

_1353502119.unknown

_1353435658.unknown

_1352223259.unknown

_1352223262.unknown

_1352223313.unknown

_1353398172.unknown

_1352223323.unknown

_1352223265.unknown

_1352223261.unknown

_1352223256.unknown

_1352223258.unknown

_1352223254.unknown

do an cap thoat nuoc trong nha

Documents