advance construction and equipments slip formwork

1. SLIP FORMWROK
MADE BY : NEMIL GANDHI
ENROL NO. : 140070106030
SUBJECT : ADVANCE CONSTRUCTION & EQUIPMENTS
BATCH : B1
YEAR : 2016-2017
GUIDED BY : PROF. J. J. BHAVSAR
PRESENTATION ON

2. SLIP
FORMWORK

3. INTRODUCTION
The technique was in use by the early 20th century for building
silos and grain elevators.
In case of vertical constructions like chimneys and silos, using
slip-forming , concrete is continuously placed , compacted and
formwork is pulled up by hydraulic jacks , giving reaction
against main reinforcements.
Vertical slipform relies on the quick-setting properties of
concrete requiring a balance between early strength gain and
workability.

4. Slip form construction is a method for building large
towers or bridges from concrete. The name refers to the moving
form the concrete is poured into, which moves along the project
as the previously poured concrete hardens behind it. The
technique has also been applied to road construction.
The technique is generally adopted for tall structures like
chimneys and silos. It is also adopted for pavement construction
CONCEPT BEHIND SLIP FORMWORK

5. INTRODUCTION
Concrete needs to be workable enough to be placed to the
formwork and strong enough to develop early strength so that
the form can slip upwards without any disturbance to the freshly
placed concrete.
The rate of slipping of formwork depends upon the temperature
and strenght development of concrete to withstand without the
support of formwork. This technique is suitable for uniform
shaped structures. However, it can be adopted for irregular
shaped structures with certain precautions.

6. Picture with Caption Layout
Caption

7.  Distribution and working deck
 Hanging scaffold
 Screw for adjusting wall
thickness
 Horizontal turnbuckles
 Lifting yoke
 Jackrod
 Hydraulic device PA 14/10
 Climbing rod extractor KU 32
 Working deck
 Radius screw
 Screw for adjusting inclination
 Spider beam
 3-t interform slipform jack
 Reinforcing steel
 Hydraulic device PAP 10

8. This technique was adopted for the core construction of
bombay stock exchange building having irregular shape and
many openings. The core of 380 feet tall structure was
completed in 38 days with formwork slipping rate of about 12.5
cm per hour.
The slip form paving method was first time adopted in Delhi-
mathura concrete road construction in 1990. in the Mumbai-
pune six lane express highway construction and abad-baroda
expressway construction slip form pavers were used.

9. FAMOUS CONSTRUCTIONS USING SLIPFORM
A notable use of the method
was the Skylon Tower in
Niagara Falls, Ontario, which
was completed in 1965. The
technique was soon utilized to
build the Inco Superstack in
Sudbury, Ontario and the CN
Tower in Toronto. It is the most
common method for
construction of tall buildings in
Australia.

10. ADVANTAGES OF SLIP FORM
 Construction of joints is eliminated. Hence , for structures which
must be watertight the slipform construction is most desirable
 The construction work can be carried out easily
 There is considerable saving in cost of forms as there is less wastage
of forms and they can be used several times

11. USE OF SLIPFORM TECHNIQUE
 Construction of chimneys, silos, piers, towers etc
 Construction of RCC highways, expressways
 Construction of missile launching bases, water reservoirs

12. Add a Slide Title - 4

13. From foundation to rooftop of even the very tallest projects, with the
system’s hydraulic jacks, installing steel reinforcement and pouring
concrete become much easier and faster, plus can be more efficiently
controlled to assure the highest quality finished cement structure.
SLIPFORM technology virtually eliminates unnecessary waste and
hazards, making this construction system even more efficient and
economical.

14. the constructor - slipform construction
NBM construction information – slipform techniques for accelerated construction
YouTube- https://www.youtube.com/watch?v=TK_G09erxqQ
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