It contains a short information about FORMWORK, SCAFFOLDING, CENTERING

2. TOPIC
FORMWORK, CENTERING
& SCAFFOLDING

3.  Formwork is a mould including all supporting
structure , used to shape and support the concrete
until it attains sufficient strength to carry its own
weight.
 It should be capable of carrying all imposed dead &
live loads apart from its own weight.
FORMWORK

4. Formwork is commonly made
of
* Steel
* Timber

5. STEEL FORMWORK

6. TIMBER FORMWORK

7.  Formwork has been in use since the beginning of
concrete construction.
 New materials such as steel, plastics & fibreglass are
used in formwork.
 Greater attention is being given to the design,
fabrication, erection, and dismantling of formwork
 Formwork is designed according to the ACI document
SP-4.

8. FIBREGLASS FORMWORK

9.  It should be water tight.
 It should be strong.
 It should be according to the size of member.
 Its contact surface should be uniform.
* Qualities of formwork

10.  The material should be cheap and reusable.
 Swelling and shrinkage should be minimum.
 Deflection should be minimum.
 Light in weight , so that easy to transfer.
* Requirement of Formwork

11.  Wall * Chimneys
 Column * Water tank
 Slabs & Beams * Cooling towers
 Stairs etc…….
* Uses of Formwork

12.  A temporary elevated platform to stand safely and
carry on the construction.
 Provide platform to keep necessary materials of
construction , tools such as bricks, mortar, trowel,
plumb bob, etc…
 Scaffolding is also needed for the repairs or even
demolition of a building.
SCAFFOLDING

13. SCAFFOLDING

14.  Standards
 Ledgers
 Braces
 Putlog
 Boarding
 Guard board
 Tie board
Components of scaffolding