×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Special Reinforced Masonry Shear Wall

Special Reinforced Masonry Shear Wall

Special Reinforced Masonry Shear Wall

(OP)
Hi,

If you have a building in Seismic Design Category D, Special Reinforced Masonry Shear walls are required.  Per ACI 530, "1.13.2.2.5 c)Shear reinforcement shall be anchored around vertical reinforcing with a standard hook."

This makes me think that horizontal reinforcing needs to be via bond beam with rebar and not joint reinforcement.  What do you think?  Does every bar need to have a hook around the vertical reinforcing?  So if you have vertical reinforcing at 48" o.c. and your horizontal bars are #4 in a bond beam at 48" o.c. then every horizontal bar will be about 4' long with a hook at each end?  Or can they be about 8' long with a hook at each end?  

Is there a resource for special seismic detailing?  I have the 2006 IBC Seismic Design Manuals.  I did take a look at TEK 14-18A Prescriptive Seismic Reinforcing Requirements for Masonry Structures.

Are there any requirements for the maximum spacing of shear walls with a flexible diaphragm?  

I have no experience designing in SDC D and am quite nervous.  We do not have the project yet....  Thank you in advance for your advice.

-K

RE: Special Reinforced Masonry Shear Wall

I don't think the intent was to hook around each vertical bar.
Also, bond beams would be the conventional way to provide the horizontal shear reinforcement, but there are Ivany blocks available that have notches in them to allow for placement of horizontal steel.  The only problem is you have to grout it solid.

RE: Special Reinforced Masonry Shear Wall

If you are required to have shear reinforcement that is the masonry can't take the shear alone, the horizontal reinforcement must end with a standard hook around the vertical rebar at the ends of the shear wall.  My ACI 530 is at work there are limitations on rebar spacing regards of diaphragm type.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources