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EMT 157
           EM2D
Faerina Mohd Nasir

Izzah Atira Dolmat

Nik Nur Fatin Najwa Nik Hassan

Nur Hasimah Mahamood

Mohamad Syahir Md Azam
                                 FOUNDATION
Muhammad Ariff Khamzah
Definition



“A foundation is the base on which a building
 rests and its purpose is to safely transfer the
    load of a building to a suitable subsoil”
Factors need to consider when choosing
           the type of foundation


 Total loads of the building

 The capacity of the subsoil

 Cost involved
Type of loads of the building
  Total


                                Imposed
                                  Wind
                                  Dead
Factors need to consider when choosing
           the type of foundation


 Total loads of the building

 The capacity of the subsoil

 Cost involved
Wrong subsoil might cause
        movement of building


    The capacity of the subsoil
Wrong subsoil may release harmful material


    An adequate depth can help retain
          the building position


  Avoid shrinkage and sediment from soil
Types of Foundation
Shallow Foundation :
   Strip
   Pad
   Raft


Deep Foundation :
   Piling
What kind of soil suitable for Pad foundation?




                    Pad


            Non cohesive soil
Non cohesive soil


A soil such as gravel or sand in which the
particles do not stick together, as opposed to a
sticky clay or claylike silt.
How does it look like?




        Pad
Characteristic of Pad Foundation
• For buildings not more than 4 storey

• Made by using formwork

• Not for load bearing building

• Column stump is square shaped

• Usually made by concrete

• Transmit loads from column

• The more wider area, the more
  thicker the foundation
Site Visit
On the 23rd of March a survey has been done

• The site is for commercial building
• This project under MRCB
• For 8 months on August 2010 they started for soil investigation
• For 2 months on February 2011 they started for site investigation
• Now they are doing the process of foundation by steps
• Two types of foundation use for the project
       > Piling – for high rise building
       > Pad – for building less than 3 storey building
• Use reinforcement concrete
• Concrete mix of 1:3:6
Process in making Pad Foundation




  1. Clearing the site   2. Excavate : small excavation because pad
                            foundation requires small size of space
Process in making Pad Foundation




  3. Formwork for Pad   4. Install reinforcement : up to ground floor
     filling                                     : extra reinforcement called
                                                   starter bar
Process in making Pad Foundation




5. Pour concrete into the Formwork :   6. Let concrete cured then Earth
   column stump                           backfill
Process in making Pad Foundation




7. Place Formwork and install      8. Pour concrete then backfill slab
   reinforcement for ground beam   base and soil compaction
Advantages of Pad Foundation
         Economic due to control of size

     Shallow form of foundation needs little
                  excavation

     Shape can be designed to accommodate
                   tight sites


Disadvantages of Pad Foundation
            Can become very large if
            used for high point loads

       Limited to dealing with point loads
Conclusions


                  Easy to make


The right types of foundation in the right types of
        subsoil will prevent from cracking


                More economical
THANK YOU
It’s Q&A session

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Building Sem 2 (EMT 157)

  • 1. EMT 157 EM2D Faerina Mohd Nasir Izzah Atira Dolmat Nik Nur Fatin Najwa Nik Hassan Nur Hasimah Mahamood Mohamad Syahir Md Azam FOUNDATION Muhammad Ariff Khamzah
  • 2. Definition “A foundation is the base on which a building rests and its purpose is to safely transfer the load of a building to a suitable subsoil”
  • 3. Factors need to consider when choosing the type of foundation  Total loads of the building  The capacity of the subsoil  Cost involved
  • 4. Type of loads of the building Total Imposed Wind Dead
  • 5. Factors need to consider when choosing the type of foundation  Total loads of the building  The capacity of the subsoil  Cost involved
  • 6. Wrong subsoil might cause movement of building The capacity of the subsoil Wrong subsoil may release harmful material An adequate depth can help retain the building position Avoid shrinkage and sediment from soil
  • 7. Types of Foundation Shallow Foundation :  Strip  Pad  Raft Deep Foundation :  Piling
  • 8. What kind of soil suitable for Pad foundation? Pad Non cohesive soil
  • 9. Non cohesive soil A soil such as gravel or sand in which the particles do not stick together, as opposed to a sticky clay or claylike silt.
  • 10. How does it look like? Pad
  • 11. Characteristic of Pad Foundation • For buildings not more than 4 storey • Made by using formwork • Not for load bearing building • Column stump is square shaped • Usually made by concrete • Transmit loads from column • The more wider area, the more thicker the foundation
  • 12.
  • 13. Site Visit On the 23rd of March a survey has been done • The site is for commercial building • This project under MRCB • For 8 months on August 2010 they started for soil investigation • For 2 months on February 2011 they started for site investigation • Now they are doing the process of foundation by steps • Two types of foundation use for the project > Piling – for high rise building > Pad – for building less than 3 storey building • Use reinforcement concrete • Concrete mix of 1:3:6
  • 14. Process in making Pad Foundation 1. Clearing the site 2. Excavate : small excavation because pad foundation requires small size of space
  • 15. Process in making Pad Foundation 3. Formwork for Pad 4. Install reinforcement : up to ground floor filling : extra reinforcement called starter bar
  • 16. Process in making Pad Foundation 5. Pour concrete into the Formwork : 6. Let concrete cured then Earth column stump backfill
  • 17. Process in making Pad Foundation 7. Place Formwork and install 8. Pour concrete then backfill slab reinforcement for ground beam base and soil compaction
  • 18. Advantages of Pad Foundation Economic due to control of size Shallow form of foundation needs little excavation Shape can be designed to accommodate tight sites Disadvantages of Pad Foundation Can become very large if used for high point loads Limited to dealing with point loads
  • 19. Conclusions Easy to make The right types of foundation in the right types of subsoil will prevent from cracking More economical

Editor's Notes

  1. Square sh
  2. Charact
  3. It’s Q&A session