Abstract：
In addition to strength and supporting span, early dismantlement construction shall also take the influences of concrete strength class and floor slab thickness into consideration. Based on applicable specifications, the following two methods, including cracking bending moment of plain concrete beam and cross-section stress of component taken as material with average elasticity (only plain concrete), etc., are adopted to calculate and analyze the structural surface stress under self-weight of floor slab. It is suggested that early dismantlement calculation and control of cast-in-place concrete floor slab shall be carried out according to 50% of the design strength.
