If it is removed from both ends to the middle of the span, it is the columns at both ends and the formwork in the middle of the span that bear the load of the beam. When the mid-span formwork is removed, the beam is likely to crack and damage.

A, what is the strength requirement of beam and slab form removal?

1, beam and slab form removal is determined by strength. When the span of plate member is less than 2m, the concrete strength must exceed 50% before formwork removal. If the construction span is more than 2m but less than 8m, the formwork can only be removed if the strength exceeds 75%. When the span of members exceeds 8m, the formwork can only be removed when the strength exceeds 100%.

2. If the formwork is removed at will, it will bring great hidden dangers to the engineering quality and construction safety. There are many factors that affect the strength of concrete. For example, the maturity of concrete will increase with time, and the higher the temperature, the faster the growth rate. If the temperature is low, the growth rate will slow down.