水泥和钢筋变得严重不足(但两者都有兴盛的黑市)。
Cement and steel rods have become scarcer (there is a thriving black market in both).
再者是梁、板主筋位置不准确、钢筋搭接位置不正确，导致构件承载力不足发生质量事故。
Second is the inaccurate main steel bars' position of beam or plate or wrong bonding position of steel bars causing the reduce of bearing strength.
某工业厂房现浇混凝土楼面由于混凝土抗压强度偏低和负弯距钢筋下移，造成了抗弯承载力不足，出现了大量裂缝。
The low grade of concrete and negative moment reinforcement descending cause the appearance of concrete crack in a workshop floor.
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