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Building Sem 2 (EMT 157)


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details on foundation....
site assignment
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Building Sem 2 (EMT 157)

  1. 1. EMT 157 EM2DFaerina Mohd NasirIzzah Atira DolmatNik Nur Fatin Najwa Nik HassanNur Hasimah MahamoodMohamad Syahir Md Azam FOUNDATIONMuhammad Ariff Khamzah
  2. 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. 3. Factors need to consider when choosing the type of foundation Total loads of the building The capacity of the subsoil Cost involved
  4. 4. Type of loads of the building Total Imposed Wind Dead
  5. 5. Factors need to consider when choosing the type of foundation Total loads of the building The capacity of the subsoil Cost involved
  6. 6. Wrong subsoil might cause movement of building The capacity of the subsoilWrong subsoil may release harmful material An adequate depth can help retain the building position Avoid shrinkage and sediment from soil
  7. 7. Types of FoundationShallow Foundation :  Strip  Pad  RaftDeep Foundation :  Piling
  8. 8. What kind of soil suitable for Pad foundation? Pad Non cohesive soil
  9. 9. Non cohesive soilA soil such as gravel or sand in which theparticles do not stick together, as opposed to asticky clay or claylike silt.
  10. 10. How does it look like? Pad
  11. 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. 12. Site VisitOn 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
  13. 13. Process in making Pad Foundation 1. Clearing the site 2. Excavate : small excavation because pad foundation requires small size of space
  14. 14. Process in making Pad Foundation 3. Formwork for Pad 4. Install reinforcement : up to ground floor filling : extra reinforcement called starter bar
  15. 15. Process in making Pad Foundation5. Pour concrete into the Formwork : 6. Let concrete cured then Earth column stump backfill
  16. 16. Process in making Pad Foundation7. Place Formwork and install 8. Pour concrete then backfill slab reinforcement for ground beam base and soil compaction
  17. 17. Advantages of Pad Foundation Economic due to control of size Shallow form of foundation needs little excavation Shape can be designed to accommodate tight sitesDisadvantages of Pad Foundation Can become very large if used for high point loads Limited to dealing with point loads
  18. 18. Conclusions Easy to makeThe right types of foundation in the right types of subsoil will prevent from cracking More economical
  19. 19. THANK YOUIt’s Q&A session