单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,*,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：,q,g,计算管段的给水设计秒流量（,L/s）；,N,g,计算管段的卫生器具给水当量总数；,、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,值,K,值,住宅,有大便器、洗涤盆和无沐浴设备,1.05,0.0050,有大便器、洗涤盆和沐浴设备,1.02,0.0045,有大便器、洗涤盆、沐浴设备和热水供应,1.1,0.0050,幼儿园、托儿所,1.2,0,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,3.0,4、,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,33,15,25,40,洗脸盆、盥洗槽水龙头,60,100,50,100,60,浴盆,50,淋浴器,100,100,100,大便器冲洗水箱,30,20,30,大便器自动闭式冲洗阀,5,3,4,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=A V,管道的控制流速：,支管的流速为0.61.2,m/s,干、立、横管的流速为1。01.8,m/s,消防管的流速为不大于2.5,m/s,按卫生器具当量数确定管径,管径,15,20,25,32,40,50,70,当量数,3,6,12,20,30,50,75,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,q,g,为,L/s、,管径为,mm、,流速,为,m/s、,单位管长的水头损失,i,为0.1,m(H,2,O）/m),q,g,DN15,DN20,DN25,DN32,DN40,i,i,i,i,i,0.05,0.07,0.10,0.12,0.14,0.16,0.18,0.20,0.25,0.30,0.35,0.40,0.45,0.50,0.55,0.60,0.65,0.70,0.75,0.29,0.41,0.58,0.70,0.82,0.94,1.05,1.17,1.46,1.76,0.284,0.518,0.985,1.37,1.82,2.34,2.91,3.54,5.51,7.93,0.22,0.31,0.37,0.43,0.50,0.56,0.62,0.78,0.93,1.09,1.24,1.40,1.55,1.71,1.86,2.02,0.111,0.208,0.288,0.38,0.485,0.601,0.727,1.09,1.53,2.04,2.63,3.33,4.11,4.97,5.91,6.94,0.23,0.26,0.30,0.34,0.38,0.47,0.56,0.66,0.75,0.85,0.94,1.04,1.13,1.22,1.32,1.41,0.086,0.113,0.143,0.176,0.213,0.318,0.442,0.586,0.748,0.932,1.13,1.35,1.59,1.85,2.14,2.79,0.21,0.26,0.32,0.37,0.42,0.47,0.53,0.58,0.63,0.68,0.74,0.79,0.052,0.077,0.107,0.141,0.179,0.221,0.267,0.318,0.373,0.431,0.495,0.562,0.20,0.24,0.28,0.32,0.36,0.40,0.44,0.48,0.52,0.56,0.60,0.039,0.054,0.080,0.089,0.111,0.134,0.159,0.184,0.215,0.246,0.283,q,g,DN15,DN20,DN25,DN32,DN40,i,i,i,i,i,0.05,0.07,0.10,0.12,0.14,0.16,0.18,0.20,0.25,0.30,0.35,0.40,0.45,0.50,0.55,0.60,0.65,0.70,0.75,0.29,0.41,0.58,0.70,0.82,0.94,1.05,1.17,1.46,1.76,0.284,0.518,0.985,1.37,1.82,2.34,2.91,3.54,5.51,7.93,0.22,0.31,0.37,0.43,0.50,0.56,0.62,0.78,0.93,1.09,1.24,1.40,1.55,1.71,1.86,2.02,0.111,0.208,0.288,0.38,0.485,0.601,0.727,1.09,1.53,2.04,2.63,3.33,4.11,4.97,5.91,6.94,0.23,0.26,0.30,0.34,0.38,0.47,0.56,0.66,0.75,0.85,0.94,1.04,1.13,1.22,1.32,1.41,0.086,0.113,0.143,0.176,0.213,0.318,0.442,0.586,0.748,0.932,1.13,1.35,1.59,1.85,2.14,2.79,0.21,0.26,0.32,0.37,0.42,0.47,0.53,0.58,0.63,0.68,0.74,0.79,0.052,0.077,0.107,0.141,0.179,0.221,0.267,0.318,0.373,0.431,0.495,0.562,0.20,0.24,0.28,0.32,0.36,0.40,0.44,0.48,0.52,0.56,0.60,0.039,0.054,0.080,0.089,0.111,0.134,0.159,0.184,0.215,0.246,0.283,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,水表用水量的计量,阀门,管道穿越基础的做法,二、管网布置和安装,1、管网布置原则：,确保供水安全和良好的水力条件,保护管道不受损坏,不影响建筑物的使用和生产安全,便于安装、维修,2、管道的敷设：,明装,暗装,管道连接,管道试压,3、管道的固定方法,管道支、吊架,4、管道的防护措施,管道防腐,管道的保温防冻,管道的防结露,防噪声,