×
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

Masonry Anchorage

Masonry Anchorage

Masonry Anchorage

(OP)
I have a scenario where I am using 6x4x1/2 angle as a deck support anchored to a CMU. I was think an expansion anchor would be best suited for this application. The angle/wall is not heavily loaded supporting 100 PLF.

Attached is my concern,there are certain areas that the anchor is not acceptable (1 3/8'' on each side of the CMU block joint). Is there an easy way to combat this?

One thought that I had was to have slotted holes made in the angle w/ a plate washer, but the slot would have to be 4 1/4'' to accommodate the 1 3/8'' + 3/4'' anchor.

Thanks in advance for any help.

RE: Masonry Anchorage

Put your fasteners at multiples of 16". either all will be correct or none... Roll those Dice!

RE: Masonry Anchorage

You could punch a second set of holes, at the design spacing, 8" shifted from the original set. Then make it clear in your documents that it's not necessary to install bolts in all the holes.

On an unrelated note, 6x4x1/2 is kind of a monster angle for the application.

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: Masonry Anchorage

With few exceptions, it is typically advised to space anchors in CMU at masonry intervals of 8", 16", 24", etc...

I specify in my details / notes that, "ANCHOR MUST NOT BE INSTALLED WITHIN 1 1/4" OF VERTICAL CMU HEAD JOINT."

I also have provided a second set or "option" holes in an attempt to avoid either the veritcal head or horizontal bed joints.

RE: Masonry Anchorage

(OP)
Thanks for the advice, I have spaced the anchors at 24'' OC with the masonry dimension in mind. Seems like the best option is to have another set of holes offset to one side 3''.

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