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PERMISSIBLE FLEXURAL STRESSES IN TENDONS & CONCRETE ACCORDING TO ACI CODE PRESENTED BY TATHEER AKHLAQ 2006-MSC-CIVIL-STRU-08
Introduction ,[object Object],[object Object],[object Object],[object Object]
Introduction ,[object Object],[object Object],[object Object]
PERMISSIBLE STRESS IN CONCRETE
Permissible Stresses In Concrete ,[object Object],[object Object],[object Object],[object Object]
Stage 1:  Permissible Stresses After Transfer Of Prestress Force ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Table 1 Permissible Stresses After Transfer Of Prestress Force
Stage 2:  Service Load Stress Limit  ,[object Object]
Table 2:  Service Load Stress Limit   cover requirements are met.   with requirements stated elsewhere in the code, and where special    realtionships shows that immediate and long time deflections comply    on transformed cracked sections and on bilinear moment deflection    of members ( except two way slab systems ) where analysis based  12√Fci' c. Extreme fibre stress in tension in precompressed tensile zone  6√Fci' b. Extreme fibre stress in tension in precompressed tensile zone 0.45 F ci ' a. Extreme fibre stress in compression   shall not exceed the following   2. Stresses at service loads (after allowance for all prestress losses)
Stage 3:  Escape Clause ,[object Object],[object Object]
PERMISSIBLE STRESSES IN STEEL
Permissible Stresses In Steel ,[object Object],[object Object],[object Object],[object Object]
Table 3: Permissible Stresses In Steel
[object Object]
THANKS

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Concrete

  • 1. PERMISSIBLE FLEXURAL STRESSES IN TENDONS & CONCRETE ACCORDING TO ACI CODE PRESENTED BY TATHEER AKHLAQ 2006-MSC-CIVIL-STRU-08
  • 2.
  • 3.
  • 5.
  • 6.
  • 7. Table 1 Permissible Stresses After Transfer Of Prestress Force
  • 8.
  • 9. Table 2: Service Load Stress Limit   cover requirements are met.   with requirements stated elsewhere in the code, and where special   realtionships shows that immediate and long time deflections comply   on transformed cracked sections and on bilinear moment deflection   of members ( except two way slab systems ) where analysis based 12√Fci' c. Extreme fibre stress in tension in precompressed tensile zone 6√Fci' b. Extreme fibre stress in tension in precompressed tensile zone 0.45 F ci ' a. Extreme fibre stress in compression   shall not exceed the following   2. Stresses at service loads (after allowance for all prestress losses)
  • 10.
  • 12.
  • 13. Table 3: Permissible Stresses In Steel
  • 14.