1、住宅給水設計秒流量計算例1：生活給水設計計算草圖如圖1所示，立管A和B服務于每層六戶的10層普通住宅n型，每戶一廚一衛，生活熱水由家用燃氣熱水器供應，每戶的衛生器具及當量為：洗滌盆1只（N=1.0）;坐便器1具（N=0.5）;洗臉盆1只（N=0.75）;淋浴器1具（N=0.75 ）;洗衣 機水嘴1個（N=1.0）。立管C和D服務于每層四戶的10層普通住宅出型，每戶兩衛一廚， 生活熱水由家用燃氣熱水器供應，每戶的衛生器具及當量為：洗滌盆1只（N=1.0）;坐便器2 具（N=0.5*1 =1）;洗臉盆 2 只（N=0.75*2=1.5 ）;浴盆 1 只（N=1.2）,淋浴器 1 具（N=0.75

2、）; 洗衣機水嘴1個（N=1.0）。計算給水設計秒流量。S1：計算期計算：立管A和B：查表221,取生活用水定額：250L/人？天；用水時間24小時；時變化 系數2.8。設戶均人數3.5人。查表2.1.1,小計戶當量 Ng=4.0。最大用水時衛生器具給水當量平均出流概率為：250* 3,5* 2.8Uo=0.03540.2* 4* 24* 3600查表 2.3.1; a c=0.02413立管C和D:查表2.2.1,取生活用水定額：280L/人？天；用水時間24小時；時變 化系數2.5。設戶均人數4人。查表2.1.1,小計戶當量 Ng=6.45。最大用水時衛生器具給水當量平均出流概率為：280

3、* 4* 2.5U0= =0.02510.2* 6,45* 24* 3600查表 2.3.1; a c=0.01522管段23的最大用水時衛生器具給水當量平均出流概率為:4* 6* 10* 2* 0.0354 6.45* 4* 10* 0.0251U 0(23)0.03184* 6*10* 2 6.45* 4* 10查表 2.3.1; a c=0.02095管段34的最大用水時衛生器具給水當量平均出流概率為：U 0(23)4* 6* 10* 2* 0.0354 6.45* 4* 10* 2* 0.0251 -八=0.03014* 6*10* 2 6.45* 4* 10* 2查表 2.3.1;

4、a c=0.01947設計秒流量計算如下表：浴盆(1.20)坐便器 (0.5 )洗臉 盆(0.75洗滌盆淋浴器洗衣機 (1.0)匯NgUo (%)a cU(%)q(L/s)(1.0)(0.75)入戶管A00.50.7510.75140.03540.024130.52070.42A1A2034.564.56240.03540.024130.22701.09A2A306912912480.03540.024130.16731.61A3A40913.51813.518720.03540.024130.14082.03A4A501218241824960.03540.024130.12502.40A5

5、A601522.53022.5301200.03540.024130.11422.74A6A7018273627361440.03540.024130.10623.06A7A802131.54231.5421680.03540.024130.10003.36A8A9024364836481920.03540.024130.09503.65A9A1002740.55440.5542160.03540.024130.09093.93A101030456045602400.03540.024130.08734.191206090120901204800.03540.024130.06836.56入戶

6、管C1.211.510.7516.450.02510.015220.40750.53C1C24.84643425.80.02510.015220.21131.09C2C39.681286851.60.02510.015220.15371.59C3C414.412181291277.40.02510.015220.12811.98C4C519.21624161216103.20.02510.015220.11292.33C5C62420302015201290.02510.015220.10252.64C6C728.82436241824154.80.02510.015220.09482.94C

7、7C833.62842282128180.60.02510.015220.08883.21C8C938.43248322432206.40.02510.015220.08403.47C9C1043.23654362736232.20.02510.015220.08003.72C1024840604030402580.02510.015220.07663.9523481001501601201607380.03180.020950.05648.3334961402102001502009960.03010.019470.04999.93例2:有一 26層高級賓館， 6層至26層為客房，給水采用分

8、區供水， -1層至5層為低區, 6層至15層為中區，16層至26層為高區，高區和中區通過屋頂水箱分別供水， 衛生間平面 和計算簡圖如圖，計算中區給水設計秒流量。B2:計算熊計算：查表222,取用水定額：400L/人？天；用水時間24小時;時變化系數2.0。總床位數為462床，中區和tWj區最tWj日最tWj時生活用水量為:400*462* 2.0Qh=15.4m3/h24*1000中區設計秒流量計算：Qg=0.2*a*“=2.5浴盆 (1.0)坐便器 (0.5)洗臉盆 (0.5 )匯Ngq(L/s)浴盆 (1.0)坐便器 (0.5)洗臉盆 (0.5 )匯Ngq(L/s)標準間10.50.520

9、.409101899363.001221140.801011201010403.162342281.411112402020804.4734633121.7312136030301205.4845844162.0013148040401606.32561055202.24141510050502007.07671266242.45151612060602407.75781477282.65161722011011044010.49891688322.83* x 、r， I r a .4層，計3: 一刃、公餒公共衛生何件直如卜，2至4層小段尢障礙衛生問，算各管段給水設計秒流量。辦公樓給水設計秒流

10、量計算計算：Qg=0.2*a*、;N7“ =1.5坐便器蹲便器拖布池小便斗洗臉盆Vl'NIn計算設計(0.5)(6.0)(1.0 )(0.5 )(0.5 )乙Ngq(L/s)q(L/s)1200000.50.50.210.1230000110.300.23400.50011.51.571.4450100121.621.625601.50012.51.671.67670310151.871.877804.52017.52.022.029100010010.300.2101100.51001.51.571.411120110021.621.6212601.51002.51.671.6717

11、180000.500.50.210.118190.5000.5010.300.2201900000.50.50.210.119210.5000.50.51.50.370.3222300000.50.50.210.123210000110.300.221240.5000.51.52.50.470.4724250.50011.530.520.5225260.5001.51.53.50.560.5626270.50021.540.600.627280.5002.51.54.50.640.64AB04.522210.52.172.17BC09444212.572.57CE013.566631.52.8

12、82.88CD018888423.143.14DE0.522.51010.510.5543.403.4例4:某市體育館運動員休息室衛生間平面布置如圖，計算給水設計秒流量。平面布置圖計算：qg=' q°Nob查表2.3.7,同時給水百分數為：洗滌池(qo=0.3,b=15%),洗手盆(qo=0.1,b=70%),洗臉盆 (qo=0.1,b=80%),淋浴器(qo=0.1,b=100%),大便器自閉式沖洗閥(q0=1.2,b=2%),1 2: qg=1*0.1*0.7=0.07,取 qg=0.1L/s23: qg=0.1 L/s34: qg=1*0.1*0.7+1*0.1*1=0

13、.17 L/s,45: qg=1*0.1*0.7+2*0.1*1=0.27 L/s,56: qg=1*0.1*0.7+3*0.1*1=0.37 L/s,67: qg=2*0.1*0.7+3*0.1*1=0.44 L/s,78: qgi=1*0.1*0.8+2*0.1*0.7+3*0.1*1=0.52 L/s, qg2=1.2*2*0.02=0.048, 取 qg2=1.2L/s qg=0.52+1.2=1.72L/s89: qg1=1*0.1*0.8+4*0.1*0.7+3*0.1*1=0.62 L/s,qg2=1.2*5*0.02=0.12,取 qg2=1.2L/sqg=0.62+1.2=1

14、.82L/s水力計算:沿程損失計算:浴盆坐便器洗臉盆匯Ng( 1.00 )( 0.5 )(0.5 )qD(mm)i(m/m)V(m/s)L(m)h(m)1a1b000.50.50.10150.0340.573.200.141b1c00.50.510.20200.0300.640.700.031c110.50.520.40200.1091.270.600.091-221140.80320.0401.003.600.192342281.41400.0391.133.600.1834633121.73400.0561.383.600.2645844162.00500.0251.023.600.125

15、61055202.24500.0301.143.60045650.0100.743.600.05781477282.65650.0120.803.600.05891688322.83650.0130.853.600.069101899363.00650.0150.903.600.071011201010403.16650.0160.9512.000.251112402020804.47800.0110.894.500.1312136030301205.48800.0161.099.000.1913148040401606.321000.0070.819.200.01141510050502007.071000.0090.901.000.08151612060602407.751000.0100.997.000.14161722011011044010.491000.0181.3410.700.25171822011011044010.491000.0181.3449.301.163.60局部損失計算：hj=0.3*3.6=1.08m 匯 h=1.08+3.60=4.68m最不利點(洗臉盆)流出水頭為5m屋頂水箱底標高為104.30m1 節點標高為23.50m， 10節點標高為55.9