eatowallareaCm建筑物地上居住部分外墙面上的窗及阳台门(含露台、晒台等出入口)的洞口总面积与建筑物地上居住部分外墙立面的总面积之比。3抗风压性能3.0.1建筑外门窗抗风压性能的技术设计标准风压值Wk及工程检测值P3应符合表3.0.1的Pk值规定。表3.0.1外门窗抗风压性能限值单位.kN/m2地区类别安装高度(m)一类地区二类地区三类地区三沙市Pk对应分级Pk对应分级Pk对应分级Pk对应分级5≥1.001≥1.532≥1.842≥3.89610≥1.001≥1.532≥2.093≥4.42715≥1.001≥1.692≥2.273≥4.82820≥1.001≥1.802≥2.403≥5.09930≥1.001≥1.992≥2.614≥5.529Pk40≥1.001≥2.153≥2.764≥5.849Pk50≥1.081≥2.373≥2.874≥6.089Pk60≥1.15l≥2.453≥2.974≥6.309Pk70≥1.211≥2.544≥3.105≥6.559Pk80≥1.271≥2.614≥3.185≥6.739Pk90≥1.321≥2.704≥3.255≥6.889Pk100≥1.371≥2.984≥3.325≥7.039Pk150≥1.582≥3.215≥3.596≥7.609Pk200≥1.742≥3.395≥3.826≥8.109Pk250≥1.902≥3.546≥4.007≥8.109Pk300≥2.023≥3.696≥4.167≥8.109Pk350≥2.153≥3.696≥4.167≥8.109Pk400≥2.253≥3.696≥4.167≥8.109Pk≥450≥2.363≥3.696≥4.167≥8.109Pk当外门窗安装高度在表3.0.1两档之间时,其抗风压性能控制指标值Pk可取高一档数值或按下列公式计算,Pk值与性能检测P3值相对应: