海量资源,尽在掌握
 【例】 如图29所示柱间支撑,试求其制作工程量。图29 柱间支撑【解】 ①∅89×3.5钢管:(2.5-0.06×2)×7.38kg=17.56kg=0.0176t②∅70×3.0钢管:1.42×2×2×4.96kg=28.17kg=0.0282t③-220×6:0.22×0.32×0.006×7.85×4t=0.01326t④-270×6:0.27×0.415×0.006×7.85 (共 392 字) [阅读本文] >>