Checklist for beam shuttering./What are the points to be checked in beam formwork?
1. Formwork quality:
The minimum thickness of the plywood should be 12mm. for the beam formwork. For the heavier structural beams, plywood of thickness 18 mm. or above should be used to avoid bulging.
The plywood should be fastened with adequate wooden batten ( Patti ) at the appropriate intervals as shown above. The inner surface of the shutter mold should be clean & even, without having any concrete particles adhered to it.
Before the installation of the beam formwork, shuttering oil should be applied to the inner plywood surface. The oil helps in easy de-shuttering work & provides a good surface finish to the beam concrete.
3. Beam size:
The length, breadth & depth of the individual beam as required should be checked at both ends of the beam. By using the string line, the top edge of the shutter should be checked for its alignment & straight line.
4. Plumb of vertical formwork:
The formwork of the beam should be checked for its verticality by using the plumb bob or spirit levels. The measurement of the string distance should be taken from the plywood surface at the top & bottom levels of the formwork. The shutter should be adjusted for its verticality until we get an equal measurement (say y ) at the top & bottom plywood area.
5Before the installation of the beam formwork, shuttering oil should be applied to the inner plywood surface. The oil helps in easy de-shuttering work & provides a good surface finish to the beam concrete.
3. Beam size:
The length, breadth & depth of the individual beam as required should be checked at both ends of the beam. By using the string line, the top edge of the shutter should be checked for its alignment & straight line.
4. Plumb of vertical formwork:
The formwork of the beam should be checked for its verticality by using the plumb bob or spirit levels. The measurement of the string distance should be taken from the plywood surface at the top & bottom levels of the formwork. The shutter should be adjusted for its verticality until we get an equal measurement (say y ) at the top & bottom plywood area.
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