Eerc guidelines for erdd

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Eerc guidelines for erdd

  1. 1. Earthquake Engineering Research Centre International Institute of Information Technology Gachibowli, Hyderabad – 500 032 INDIA GUIDELINES FOR EARTHQUAKE RESISTANT DESIGN AND DETAILING
  2. 2. 1. Essentials of Earthquake Resistant Design  Configuration  Strength  Stiffness  Ductility 2. General Guidelines 2.1 SITE SELECTION Building should not be built on filled-up soil Building should be sufficiently away from steep slopes If unavoidable, use raft on pile
  3. 3. 2.2 PLAN OF BUILDING Asymmetric buildings undergo torsion and extreme corners are subjected to very large earthquake forces. Asymmetry should be avoided
  4. 4. 2.3 SHAPE OF BUILDING H/b<4 Very slender buildings should be avoided. Inverted pendulum type buildings are unstable
  5. 5. Sudden change of lateral stiffness should be avoided
  6. 6. 2.4 PROJECTIONS AND OVERHANGS Large overhangs and projects attract large earthquake forces
  7. 7. Load bearing- 15 mm RCC Frame - 20 mm Steel Frame - 30 mm 2.5 SEPARATION OF DISSIMILAR BUILDINGS To avoid collision Adjacent dissimilar buildings should be separated by a minimum gap 2.6 AVOID HEAVY MASS AT TOP Large water tanks should be avoided Small tanks, if provided, should be properly connected with the framing system
  8. 8. 2.7 OPEN GROUND STOREY
  9. 9. 3.0 Reinforcement Detailing Guidelines 3.1 Footing D o’s and D on’t
  10. 10. 3.2 Stirrup detail
  11. 11. 3.3 Stirrup detail
  12. 12. 3.4 Arranging stirrups in column
  13. 13. 3.5 Lapping reinforcement in column
  14. 14. 3.6 Stirrups in beam
  15. 15. 3.7 Stirrups in beam
  16. 16. 3.8 Rigid joint

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