管道布置与安装课件

3、适用于住宅、集体宿舍、旅馆、宾馆、医院、门诊部、幼儿园、办公楼、学校等建筑的计算公式：

式中：qg━━计算管段的给水设计秒流量（L/s）；Ng━━计算管段的卫生器具给水当量总数；α、k━━根据建筑物用途而定的系数

根据建筑物用途而定的系数值表4--6建筑物名称α值K值住宅有大便器、洗涤盆和无沐浴设备1.050.0050有大便器、洗涤盆和沐浴设备1.020.0045有大便器、洗涤盆、沐浴设备和热水供应1.10.0050幼儿园、托儿所1.20门诊部、诊疗所1.4办公楼、商场1.5学校1.8医疗、疗养院、休养所2.0集体宿舍、旅馆2.5部队营房3.04、适用于工业企业生活间、公共浴室、洗衣房、公共食堂、体育场等建筑的计算公式：工业企业生活间、公共浴室、洗衣房卫生器具同时给水百分数表4--7卫生器具名称同时给水水百分数%工业企业生活间公共浴室洗衣房洗涤盆（池）如无工艺要求时采用331525～40洗脸盆、盥洗槽水龙头60～10050～10060浴盆—50—淋浴器100100100大便器冲洗水箱302030大便器自动闭式冲洗阀534大便槽自动冲洗水箱100——小便器手动冲洗阀50——小便器自动冲洗水箱100——小便槽多孔冲洗管100——公共饮食卫生器具和设备同时给水百分数

卫生器具和设备名称同时给水百分数%

污水盆（池）、洗涤盆（池）50洗脸盆60淋浴器100大便冲洗水箱60小便器50生产性洗涤机40器皿洗涤机90开水器90第三节管道水力计算一、管径的计算Q=AV管道的控制流速：支管的流速为0.6~1.2m/s干、立、横管的流速为1。0~1.8m/s消防管的流速为不大于2.5m/s按卫生器具当量数确定管径管径15202532405070当量数361220305075例:一户住宅的水表连接管道的管径家庭洗衣机的给水当量为1.2二、管道的水头损失h=il管道的沿程水头损失计算管道的局部水头损失计算按不同管道的沿程水头损失的百分数表示。附表给水钢管（水煤气管）水力计算表（流量qg为L/s、管径为mm、流速υ为m/s、单位管长的水头损失i为0.1m(H2O）/m)qgDN15DN20DN25DN32DN40υiυiυiυiυi0.050.070.100.120.140.160.180.200.250.300.350.400.450.500.550.600.650.700.750.290.410.580.700.820.941.051.171.461.76

0.2840.5180.9851.371.822.342.913.545.517.93

0.220.310.370.430.500.560.620.780.931.091.241.401.551.711.862.02

0.1110.2080.2880.380.4850.6010.7271.091.532.042.633.334.114.975.916.94

0.230.260.300.340.380.470.560.660.750.850.941.041.131.221.321.41

0.0860.1130.1430.1760.2130.3180.4420.5860.7480.9321.131.351.591.852.142.79

0.210.260.320.370.420.470.530.580.630.680.740.79

0.0520.0770.1070.1410.1790.2210.2670.3180.3730.4310.4950.562

0.200.240.280.320.360.400.440.480.520.560.60

0.0390.0540.0800.0890.1110.1340.1590.1840.2150.2460.283qgDN15DN20DN25DN32DN40υiυiυiυiυi0.050.070.100.120.140.160.180.200.250.300.350.400.450.500.550.600.650.700.750.290.410.580.700.820.941.051.171.461.76

0.2840.5180.9851.371.822.342.913.545.517.93

0.220.310.370.430.500.560.620.780.931.091.241.401.551.711.862.02

0.1110.2080.2880.380.4850.6010.7271.091.532.042.633.334.114.975.916.94

0.230.260.300.340.380.470.560.660.750.850.941.041.131.221.321.41

0.0860.1130.1430.1760.2130.3180.4420.5860.7480.9321.131.351.591.852.142.79

0.210.260.320.370.420.470.530.580.630.680.740.79

0.0520.0770.1070.1410.1790.2210.2670.3180.3730.4310.4950.562

0.200.240.280.320.360.400.440.480.520.560.60

0.0390.0540.0800.0890.1110.1340.1590.1840.2150.2460.283第四节给水管网的布置和安装一、引入管和水表节点最大用水量根数埋深水表用水量的