TYPES OF FORMWORK

1.Timber Formwork

 

                                  Timber used for shuttering for exposed concrete work should have smooth and even surface on all faces which come in contact with concrete. 

It should be

1. Well seasoned
2. Light in weight
3. Easily workable with nails without splitting
4. Free from loose knots

 2.Plywood Formwork

 

            Resin bonded plywood sheets are attached to timber frames to make up panels of required sizes. The cost of plywood formwork compares favourably with that of timber shuttering and it may even prove cheaper in certain cases

 3.Steel Formwork

 

                                This consist of panels fabricated out of thin steel plates stiffened along the edges by small steel angles. The panel units can be held together through the use of suitable clamps or bolts and nuts. The panels can be fabricated in large number in any desired modular shape or size. Steel forms are largely used in large projects or in situation where large number reuses of the shuttering is possible. This type of shuttering is considered most suitable for circular or curved structures.