ACI 318-11 Shear Reinforcement
ACI 318-11 Shear Reinforcement
(OP)
It is very hard for me to understand chapter 11.4.7.5 to 11.4.7.8. Do you guys have a sketch or photograph what these look like?
When was the last time you drove down the highway without seeing a commercial truck hauling goods?
Download nowINTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS Come Join Us!Are you an
Engineering professional? Join Eng-Tips Forums!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting GuidelinesJobs |
ACI 318-11 Shear Reinforcement
|
ACI 318-11 Shear ReinforcementACI 318-11 Shear Reinforcement(OP)
It is very hard for me to understand chapter 11.4.7.5 to 11.4.7.8. Do you guys have a sketch or photograph what these look like?
Red Flag SubmittedThank you for helping keep Eng-Tips Forums free from inappropriate posts. Reply To This ThreadPosting in the Eng-Tips forums is a member-only feature.Click Here to join Eng-Tips and talk with other members! |
ResourcesThe world has changed considerably since the 1980s, when CAD first started displacing drafting tables. Download Now
Prototyping has always been a critical part of product development. Download Now
As the cloud is increasingly adopted for product development, questions remain as to just how cloud software tools compare to on-premise solutions. Download Now
Engineering-centric businesses face a number of challenges today, but unmanageable design and change processes don’t need to be counted among them. Download Now
|
RE: ACI 318-11 Shear Reinforcement
RE: ACI 318-11 Shear Reinforcement
RE: ACI 318-11 Shear Reinforcement
RE: ACI 318-11 Shear Reinforcement
Yes. Once the crack forms, the force to be dealt with is a vertical force. As such, vertical reinforcing is the most efficient way to go about resisting that force. If you sketch out a strut and tie model of the end of the beam treating the bent up bar(s) as a diagonal tension tie, you'll see it.
You use equation 11-16 with "s" as the horizontal spacing of the bent up bars.
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: ACI 318-11 Shear Reinforcement
The practice is now to use discrete, single-purpose bars in the form of top bars, bottom bar, and ties/stirrups. This results in more steel weight, but significant savings in cost for fabrication and placement. In buildings, the practice of using these bars has all but been abandoned.
There are even crazier configurations shown in the CRSI Vintage Steel Reinforcement book, including concentric hoops, overlapping hoops, and 3-, 4-, and 5-way reinforced slabs.