1、1施工机械需用量的综合计算1、 施工机械需要用量的综合计算N=式中：N施工机械需用数量（台）Q工程量K施工不均衡系数，见表 1.4.6-6A有效作业天数S机械台班产量定额B每天工作班数（班）机械工作系数（包括完好率和利用率等，见表 1.4.6-7 、表 1.4.6-8）表 1.4.6-6 施工现场不均衡系数 K不均衡系数序号 项目名称年度 季度1 土方工程 1.51.8 1.21.42 砂浆 1.51.8 1.21.43 混凝土 1.51.8 1.21.44 砖块 151.6 1.21.75 钢筋 151.6 1.21.36 模板 151.6 1.21.37 吊装 1.31.4 1.11.28
2、 道路地坪 151.6 1.11.29 屋面 1.31.4 1.11.210 机电设备安装 1.21.3 1.11.211 电器、卫生设备及管道 1.31.4 1.11.212 公路运输 1.21.5 1.11.213 铁路运输 1.52.0 1.31.521.4.6-7 机械工作系数16t/m 履带式、轨道式及塔式起重机1 斗容量的挖土机500L 的混凝土及砂浆搅拌机5t 压路机0.60.70.60.70.60.70.60.720.75 斗容量的挖土机3000.51.21.01.61.52.52.53.02.53.014（m/s） ） 管径75 100 150 200 250流量（L/S）i
3、 v i v i v i v i v24681012141618202224262830323436387.9828.461.5109.0171.0246.00.460.931.391.862.332.761.946.6914.023.936.552.671.693.5118.0146.0177.00.260.520.731.041.301.561.822.082.342.602.861.873.144.696.558.7111.113.916.920.224.128.332.837.742.884.452.260.40.340.460.570.690.800.921.031.151.261.
4、381.491.611.721.841.952.062.180.7651.131.582.082.643.283.974.735.566.647.388.49.4610.611.813.00.260.320.390.450.510.580.640.710.770.840.900.961.031.091.161.220.5290.6950.8861.091.321.571.832.122.422.753.093.453.834.230.250.290.330.370.410.450.490.530.570.620.660.700.740.7815表 1.4.6-18 给水钢管计算表（注：v表示（
5、m/s)；i 表示压力损失（m/s) ）管径（mm）25 40 50 70 80流量（L/S）i v i v i v i v i v0.20.40.60.81.01.21.41.61.82.02.63.03.64.04.65.05.621.374.815927943762985611180.380.751.131.511.882.262.643.018.9618.431.447.366.388.41141441783014005770.320.480.640.800.951.111.271.431.592.072.392.8612.91823.730.437.84674.999.81441772352773480.470.560.660.750.850.941.221.411.691.882.172.352.643.765.186.838.710.7132127.438.446.861.272.390.70.280.340.400.450.510.570.740.851.021.131.301.421.591.612.272.973.764.665.629.0311.716.319.825.730370.200.240.280.320.360.400.520.600.720.810.931.011.13166.0 399 2.82 104 1.70 42.1 1.21
