Chapter: Civil : Construction Techniques, Equipment And Practices : Construction Practices

Centering and shuttering

Shuttering is the temporary ancillary construction used as a mould for the structures In which the concrete is placed and allowed to hardened

Centering and shuttering

Shuttering is the temporary ancillary construction used as a mould for the structures In which the concrete is placed and allowed to hardened

These are classified as steel wooden plywood combined woods steel, reinforced concrete and plain concrete

Requirements of shuttering

The material should be cheap and should be suitable for re use several times

It should be practically water proof so that it should not observe water from concrete

It should be strong enough to with stand all loads coming on it

It should be stiff enough so that deflection is minimum

The surface of the formwork should smooth and it should afford easy stripping

Loads on form work

Live load due to labour etc

Dead weight of wet concrete

Hydrostatic pressure of the fluid concrete

Impact due t pouring concrete

Shuttering for column

Components

Sheeting or column shutter all around the column Yokes

Wedges bolt

Shuttering for beam and slab floor

The slab is continous over the beam

The slab is supported on 2.5 cm thick sheeting laid parallel to the main beam

The boarding may be 4 to 5 cm thick for walls up to 3to 4m high

The boards are fixed to 5cmX10cm posts known as struts are soldiers

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Civil : Construction Techniques, Equipment And Practices : Construction Practices : Centering and shuttering |