◆FORMWORK◆
Formwork is a temporary structure. There are two types of formwork shuttering and centering. The type of formwork, which is not in direct contact of structure is called shuttering.
●The part of formwork, which is used to support the shuttering is called centering.
●Stripping time may be reduced to 40% in the case of rapid hardening cement Shoring is the construction of a temporary structure to support temporarily on unsafe structure.
●The process of placing a New foundation under an existing one/strengthening an existing foundation is called underpinning of foundations.
●Cost of formwork/shuttering may be upto (20-25)% of the cost of structure in the building work Trestle scaffolding is used for painting and repair work inside the room up to a height of 15 meters
(a) Vertical formwork to beams, columns, walls =16-24 h
(b) Soffit formwork to slabs (props to be refixed immediately after removal of formwork) =3 days
(c) Soffit formwork to beams (Props to be refixed immediately after removal of formwork) =7 days
(d) Props to slabs
(i) Spanning up to 4.5m =7 days
(ii) Spanning over 4.5m =14 days
(e) Props to beams and arches
(i) Spanning up to 6 m =14 days
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