Civil Engineering MCQAE Level Civil Engineering
As per IS 456:2000, the minimum period after casting before formwork (shuttering) of vertical faces of columns and walls may be removed is:
Construction ManagementFormwork StrikingMEDIUM
Choose the correct answer
A
6 hours
B
16–24 hours
C
3 days
D
7 days
Correct Answer
B. 16–24 hours
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IS 456:2000 Table 5 (Stripping times): Vertical faces of beams and columns = 16–24 hrs. Soffit of slabs (with props) = 3 days. Soffit of beams (props remaining) = 7 days. Removal of props for beams spanning ≤6 m = 14 days. Earlier stripping risks cold joint and surface damage.
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