Hi friends i m mudassir khan student of architecture this presentation is helpful for form and materials for speedy construction

1. FORMS AND MATERIALS FOR
SPEEDY CONSTRUCTION
Submitted by
Mohd kaif
Vijay kishor
Kamal kant
Jitendra saini
Mudassir khan

2. INTRODUCTION
 Formwork in construction is the use of support structures
and moulds to create structures out of concrete which is
poured into the moulds. Formwork can be made using
moulds out of steel, wood, aluminium and/or prefabricated
forms.

 Formwork systems are among the key factors determining
the success of a construction project in terms of speed,
quality, cost and safety of works.
 The operation of removing the formwork is known as
stripping. Stripped formwork can be reused. Reusable
forms are known as panel forms and non-usable are called
stationary forms.

3. Formwork
 Formwork is the temporary structure that enables
moulding of concrete into desired shape and size
 Holds it in the correct position until it has hardened
sufficiently and is able to support the loads imposed
on it.
 The structural system of temporary supports that
holds the formwork in position is termed as false
work.
 The operation of removing the formwork is known
as stripping. Stripped formwork can be reused.
 Reusable forms are known as panel forms and non-
usable ones are called stationary forms.

4. A GOOD QUALITY OF FORM WORK SATISFY
THE FOLLOWING REQUIREMENTS
• Strong enough to withstand all types of dead and live loads
•Rigidly constructed and efficiently propped and braced both
horizontally and vertically, so as to retain its shape
•The joints in the formwork should be tight against leakage
of cement grout
•Construction of formwork should permit removal of various
parts in desired sequences without damage to the concrete
•Material of the formwork should be cheap, easily available and
should be suitable for reuse
•Material of the formwork should not warp or get distorted
when exposed to the elements

5. Classification of Formwork
 Different types of construction require the use of different
types of formworks as
 STEEL FORMWORK IS MADE OF
 Steel Formwork
 Aluminum Formwork
 Wooden Form work
 Plastic Formwork

6. Steel Formwork
 Steel formwork
 Steel forms are stronger, durable and have longer
life than timber formwork and their reuses are more
in number
 Steel forms can be installed and dismantled with
greater ease and speed.
 The quality of exposed concrete surface by using
steel forms is good and such surfaces need no
further treatment.
 Steel formwork does not absorb moisture from
concrete.
 Steel formwork does not shrink or warp

8. ALUMINIUM FORMWORK
 Often used in pre-fabricated formwork, that
is put together on site.
 Aluminium is strong and light, and
consequently fewer supports and ties are
required.
 The lighter sections will deflect more, but
this can be avoided by simply following the
manufacturer’s recommendations.

10. Plywood formwork
- This is by far the most common material used for the facing
panel. It is easily cut to shape on site, and if handled and stored
carefully, it can be used many times.
- A standard plywood thickness on site is 18mm.This is usually
sufficient for most pours.
- However, if the formwork is curved, a thinner plywood is used to
facilitate bending.
- Thicker plywood may be used when the weight
of concrete causes a standard thickness plywood to bow out,
distorting the concrete face.

12. PLASTIC FORMWORK
 Glass reinforced plastics (GRP) and vacuum
formed plastics are used when complicated
concrete shapes are required (e.g. waffle floors).
 Although vacuum formed plastics will always
need support, GRP can be fabricated with
integral bearers making it self-supporting.
 Like steel, plastic formwork can be re-used
many times, as long as care is taken not to scour
the surface whilst vibrating the concrete.

14. FAILURE OF FORMWORK

15.  Generally some unexpected event causes one member to fail, then
others become overloaded or misaligned and the entire formwork
structure collapses
 Improper stripping and shore removal
 Unstable soil under mudsills, shoring not plumb
 Inadequate control of concrete placement
 Lack of attention to formwork details
 Inadequate cross bracing and horizontal bracing of shores
 Forms sometime collapse when their shores/ jack are displaced by
the vibration caused by:
 movement of workers & equipment on the formwork

17. READY MIX CONCRETE RMC)

18. READY MIX CONCRETE (RMC)
 Ready-mix concrete (RMC) is a type of concrete
which is manufactured in a cement factory, or
specifically known as the batching plant,
according to a given set of proportions, and then
delivered to a work site, by truck mounted with
mixers.This results in a precise mixture, allowing
specialty concrete mixtures to be developed and
implemented on construction sites.

19. READY MIX VS SITE MIX CONCRETE
 READY MIX
 1. ConsistentQuality- concrete is made in high tech batching plants
in a computerized environment.
 2. Construction in double quick time.
 3. Raw materials are chosen after strict quality checks
 4. Large quantities of concrete can be ordered.This allows you to
upgrade yourself and handle projects of any size.
 5. No wastage of raw materials at your site. Everything is pre-mixed
at our plants, based on your needs.
 6. No hassle of managing labor on site.We supply ready-to-use
concrete. well-equipped technical crew will handle the pouring and
patching of concrete at the site.
 7. Safe work practices – no disruption in your schedule
 8.You don’t have to stock materials and watch over them.There’s no
worry about pilferage as the concrete is directly supplied to your site
when you need it.

20.  SITE MIX
 Quality is inconsistent–because concrete is hand mixed.
 2. Manual mixing is time consuming. Projects take longer time to
finish.
 3. Quality of raw materials is manually checked. Or not checked at
all.
 4.Takes more time. Repeated mixing needs to be done for large
quantities as the mixer will be too small to handle the requirement
 5. High wastage of raw materials due to manual mixing.
 6. Involves the use of laborers for mixing the concrete on site.
Management of labor means more time, efforts and money.
 7. Highly unsafe. Unskilled and untrained laborers may work
carelessly resulting in dangerous working conditions
 8. Risk of pilferage of raw materials is high. Housekeeping could be
poor due to piles of stocks lying at the site

21. ADVANTAGE
• Better quality concrete is produced in lesser time.
• Elimination of storage space for basic materials at site.
• Elimination of Procurement / Hiring of plant and machinery
• Wastage of basic materials is avoided.
• Labor associated with production of concrete is eliminated.
• Time required is greatly reduced.
• Noise and dust pollution at site is reduced.
• Organization at site is more streamlined.

22. RMC PLANTS IN INDIA
COMPANY PLANTS ACROSS INDIA
UltraTech - Ready Mix
Concrete (RMC) Plants
103
LAFARGE 68
ACC LIMITED 92
RMC Ready-mix India 50
Relcon Infra Projects Ltd -
RDC -
Apollo Inffratech Private
Limited
-
The Ramco Cements Limited -
Wonder Ready-mixConcrete -

23. THANK YOU…..