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  1. stillfan1

    Definition of spiral per ACI code

    The code, is very vague when it comes to the lateral tie spacing vs longitudinal bar requirements. When you read Sokai and Sheikh 1989 publication I think it becomes very apparent that more direction is needed in this area. 16db in my case allows for 22" transverse spacing with 6" longitudinal...
  2. stillfan1

    Definition of spiral per ACI code

    I have always been under the impression that if you have a continuous helix shaped transverse bar it was a spiral. Today I had an individual point out that the ACI318-14 R25.7.2.3 states that a circular continuously wound bar or wire is considered a spiral if it conforms to 25.7.3 (volumetric...
  3. stillfan1

    L-pile deflection to depth chart

    I have a reinforced drilled concrete pile that is free at the head and embedded into sandstone for 16 ft. When I view the Pile deflection to depth chart it is giving me a negative deflection of 2.4 in how is that possible with rock. I have attached the image. I would have suspected it to...

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