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(1)V=0.25×0.5×(5.2×2+4.06-0.4×2-0.45)=1.65(立方米)
(2)梁上部筋:L=(5.2×2+4.06-0.45+1.2×34×0.020+0.12×2+15×0.02×2)×2=31.33(m)
质量=31.33×2.47=77.39(kg)
梁下部筋:
单根L=(5.2-0.45/2+0.12+15×0.022+34×0.022)×2+(4.06-0.4+34×0.022×2)=17.50(m)
三根=17.50×3=52.5(m)
质量=52.5×2.98=156.45(kg)
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