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Okay, I've searched everywhere though Chapter 12 of ACI 318-11, and cannot locate any guidelines for calculating the development length and lap length for welded plain wire reinforcement in compression. Sections 12.8 and 12.19 address development length and lap length for welded plain wire...

I appreciate the feedback, guys. The IBC is the in-effect building code in the project location, so we are bound to follow it. Thanks for pointing me at Section 104.11, I suspected that something like that lurked somewhere within IBC. I suspect that being at the mercy of the local building...

Greetings, First of all, a disclaimer: not much experience with deep foundations, I'm more of a design-above-the-foundation type of engineer. But on several recent projects where augercast piles have been used, my colleagues and I have been at odds over the rebar cage length needed to satisfy...

Thanks, jdgengineer. I agree, even if permitted by ACI there isn't much bang for the buck to be realized.

I don't want to derail the recent thread about the Section 12.5.3 modification factors for footing dowels, so pardon the semi-parallel subject. The specific case that has me a bit confused is when a hooked bar (hairpin) is used to provide the needed Appendix D reinforcement for anchors in...

Greetings, Have an ongoing project in the Middle East at a petrochem facility, we're installing slurry-displacement concrete piles for an ammonia tank foundation. This new tank is at the exact location of an old ammonia tank that was removed prior to us mobilizing on site. We've found out...

Greetings, A reinforced concrete structure that I'm designing will be subjected to a permanent, sustained temperature of -20F for its entire design life. I plan to use A615 Grade 60 rebar. To the best of my knowledge and research, there are no special precautions that I need to follow for the...