Question

As per IS 456:2000, minimum period before striking form work for vertical surface of the columns
1. 1 days
2. 7 days
3. 14 days
4. 28 days

Answer 1

Correct Answer - Option 1 : 1 days

Explanation:

As per Clause 11.3.1 of IS:456-2000

Type of Formwork	Minimum Period Before Striking Formwork
Vertical formwork to columns, walls, beams.	16 - 24 h (1 Day)
Soffit formwork to slabs	3 days
Soffit formwork to beams	7 days
Props to slabs a. Spanning up to 4.5 m b. Spanning over 4.5 m	7 days 14 days
Props to beams and arches a. Spanning up to 6 m b. Spanning over 6 m	14 days 21 days