This presentation is based on my industrial internship at SOBHA DREAM ACRES.

1. PRE-CAST BUILDING
A Modern Era of construction practice…
~ Shanmukha Srinivas B G
(R131026)

2. CONTENTS
• INTRODUCTION
• PRE-CAST TECHNOLOGY
 CODE OF PRACTICE
 PRODUCTION
 ERECTION
 GROUTING
 TOPPING
 FINISHING
 MARKETING
• NON CONVENTIONAL TERMINOLOGY
• SHIM PAD
• HALF SLAB or LATTICE GIRDER SLAB
• PALATE
• ERP
• CONCLUSION

3. INTRODUCTION
• Pre-cast technology is a growing method of construction
practice all over the world.
• Although the technology is in India from a long time, there is
very less lean towards this mode due to its many construction
drawbacks.
• SOBHA constructions for the first time has almost minimized
the lose and started its first ever Pre-cast construction in
Bangalore.

4. PRE-CAST TECHNOLOGY
• No Brick is seen in site.
• Organized planning and execution
• Every element is manufactured in a Plant beforehand.
• And can be tested even before placing.
• Attach elements likewise and grouted for its fixture.
• No Plastering required
• Faster pace in construction
• Placing of elements is the only man power required.

5. CODE OF PRACTICE
INDIAN STANDARD
• IS 15916
• Building Design and
Erection Using Prefabricated
Concrete - Code of Practice
• Section Name: Planning,
Housing and pre-fabricated
construction (CED 51)
HONG KONG STANDARD
• Code of Practice for Precast
Construction 2003
• Section Name: Code of
Practice for Precast
Construction 2003
• Currently used in the site of
Dreamacres

6. PRODUCTION
• Elements (Walls and Slabs) are manufactured in the plant located
in the site itself or somewhere near.
• Manufactured in two systems:
• Circulatory System
• Stationary System
• Palates: These are the platforms on which the manufacturing
process is done.
• Circulatory system is for elements of depth less than 300 mm.
• Stationary system is for elements of depth more than 300 mm.

7. ERECTION
• Once the elements are ready, they are barcoded and are sent
to the site for construction.
• The process of placing and fixing of those elements is known
as erection.
• Tower or Mobile cranes are used to lift the elements.
• Anchors are placed in the elements for lifting.
• Grouting plays an important role in the erection.
• The Dowel tubes in the Dowel bars of the adjoining elements
are grouted to impart strength and connection.
• Push-Pull supports, Doka Supports, Hinge Supports are used to
keep Elements in position till the setting time.

8. GROUTING
GROUT MIXER
DOWEL TUBE GROUTING
ELEMENT FIXTURE GROUTING

9. SHIM PAD
• Essential Erection Equipment
• To maintain the level of elements on the floor
• Has different thicknesses like 1,2,3,5 & 10 mm
• Made up of either plastic or stainless steel

10. TOPPING
• Also can be generalized as Moulding.
• Half-slabs are manufactured in the plant with a thickness of
65 mm and having Lattice Girders.
• Rest of the slab is filled in situ.
• The Electrical and Plumping conduits are easily placed in this
method of Topping.
 Before topping, the element loops has to be grouted with
grout material after placing a Shear rod.

11. LATTICE GIRDER SLAB

12. FINISHING
• No need for Plastering.
• Putty work is minimal
• Less leakages through walls.
• Mineral and Bitumen sheets are provided in order to reduce
the water seepage.
• Internal Design is very much similar to any conventional one.
 As the Dream acres is apartments for High Life style people,
the Finishing is very important and is being worked as such.

13. MARKETING

15. CONCLUSION
• Pre-cast is a brand mode of construction.
• It is faster and easier to construct compared to conventional
methods.
• Eco friendly.
• Earth Quake resistant to the maximum extent.
• Less labor is an asset for this construction.
• Efficient in most of the aspects.
• I enjoyed a lot during the Intern Period…!

16. REFERENCES
• https://archive.org/details/gov.in.is.15916.2011
• https://www.bd.gov.hk/english/documents/code/cppcc2003.
pdf
• Content RGUKT
• Project records – SOBHA LIMITED

17. ~ Shanmukha Srinivas B G