Tolerance in the installation of sliding formworks in Vietnam

01:28, 11/07/2024

Circular 11/2017/TT-BXD was issued by the Ministry of Construction on October 16, 2017, stipulating specific tolerance in the installation of sliding formworks in Vietnam

Accordingly, the tolerance in the installation of sliding formworks is regulated by Circular 11 through the following table:

Unit: millimeters

Technical Specifications	Tolerance
1. Position of the center axis of the formwork relative to the design position of the corresponding structural axis requiring sliding	± 3
2. Size of the formwork opening compared to the design requirement (considering taper): - Upper opening - Lower opening	- 3 + 5
3. Position of the waler compared to the design requirement: - Horizontally - Vertically	± 3 ± 3
4. Elevation of the waler or work platform compared to the standard elevation	± 10
5. Verticality of the lifting frame	± 3
6. Relative height difference between the horizontal beams of the lifting frame	± 5
7. Distance between jacks	± 10
8. Diameter size of circular formwork or the side length of square formwork compared to the design requirement	± 5

See details in Circular 11/2017/TT-BXD effective from December 1, 2017.

-Thao Uyen-

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