镀锌铁皮风管面积厚度计算书序号名称及规格单位数量1镀锌风管m0.000.502镀锌风管m0.000.503镀锌风管m0.000.504镀锌风管m0.000.505镀锌风管m0.000.506镀锌风管m0.000.507镀锌风管m0.000.508镀锌风管m0.000.509镀锌风管m0.000.5010镀锌风管m0.000.5011镀锌风管m0.000.5012镀锌风管m0.000.5013镀锌风管m0.000.5014镀锌风管m0.000.5015镀锌风管m0.000.5016镀锌风管m0.000.5017镀锌风管m0.000.5018镀锌风管m0.000.5019镀锌风管m0.000.5020镀锌风管m0.000.5021镀锌风管m0.000.5022镀锌风管m0.000.5023镀锌风管m0.000.501风管堵头块0.000.502风管堵头块0.000.503风管堵头块0.000.504风管堵头块0.000.50小计0.00２排烟系统风管钢板厚度可按高压系统．长(m)宽(m)面积(㎡)板厚(㎜)１螺旋风管的钢板厚度可适当减小1０％～１５％．３特殊除尘系统风管钢板厚度应符合设计要求．４不适用于地下人防与防火隔墙的预埋管．风口风阀周长计算书序号名称及规格数量10.000020.000030.000040.000050.000060.000070.000080.000090.0000100.0000长(mm)宽(mm)面积(m2)
