Estimating Overall Forces Fig.2.8 Comparing of cuboid and prismatic form b 力分布的决定因雾① b 风：面积 地震：质量 db ccdb- ccdbh/2 长方体形式 →是>· 2d oc2db cc2db 海 oc 2d o2dbh -ccdh 3 棱柱体形式 ①：假定两个建筑形式的受风面积与质叠均相等，Estimating Overall Forces Fig. 2.8 Comparing of cuboid and prismatic form