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Found 5 results

  1. Concrete Exposed to Weather

    Concrete on the building exterior treated to an exterior finish e.g. paint is classified as concrete exposed to weather or not? I am facing this problem in placing the reinforcement, the exterior will be painted and weather protected, should I follow the cover requirements of concrete exposed to weather or not?
  2. I have modeled a simple 6m long concrete circular column of 760mm diameter. I have applied a joint live load at the top of the column. Selecting ACI-318 as design code with frame type as sway special, I get the flexural and shear reinforcement. However, when I change the design code to AASHTO Concrete 2007 in the design preferences with zone 3 in overwrites, I get nearly same flexural reinforcement as by ACI but I observe a huge difference in shear reinforcement. It is to be noted that I have used same combination while designing by both codes. Please check the file attached and explain. G.SDB
  3. Shear Strength Aci R11.1.2.1

    Dear members Salam in the commentary of point of ACI code 11.1.2.1 it is mentioned that when compressive strength of concrete increases 10,000psi web reinforcement increases also. we find shear strength 2*sqrt(compressive strength)*b*d, mathematically concrete shear strength(ACI 11.3.1.1) should be increased but it decreases.any reason that justify this suggestion of code??? Thanking in anticipation
  4. any one having the soft copy of this
  5. why crushing strength of concreat cylender is less then 25% of concreat cube
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