×
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

Related Articles

Jobs

Garage Stem Walls Under Braced Wall Panels

Garage Stem Walls Under Braced Wall Panels

Garage Stem Walls Under Braced Wall Panels

(OP)
Around here (central NC), most garage foundation are built with 4" brick/4" CMU or 4" brick/8"CMU. The stud walls generally bear on the brick portion. Yeah, I know this is not ideal, but this is how it is done and it seems to work fine. Unfortunately, this is at odds with the IRC as far as stem walls under braced wall panels go. See the attached drawing. The upper detail is from the IRC and shows the brick as a water table with the studs bearing on the reinforced CMU. The lower details are how it is normally built. The field inspectors do not know this portion of the code well so this gets swept under the rug in almost all cases. The Architects and Builders do not want a water table detail. Does anyone have any suggestions how to build a stem wall that meets the needs of both the IRC and the Arch/Builders?
In some cases I have used a 2x8 stud wall and busted out the face of the 8" CMU top course to get some anchor bolt purchase (also shown on drawing)

Thanks!

RE: Garage Stem Walls Under Braced Wall Panels

Ughh... I see what you mean. If you truly engineer the thing, you don't have to comply with IRC, right?

This is surely just my own ignorance but, can they really embed anchor bolts in brick like that and have a quality end product?

RE: Garage Stem Walls Under Braced Wall Panels

(OP)

Quote (KootK)

Ughh... I see what you mean. If you truly engineer the thing, you don't have to comply with IRC, right?

Correct - hence my 2x8 stud wall method. Builders are OK with it on the front wall of the garage where it does not add much material but frown upon it in other braced wall areas. I usually let the other walls slide (no pun intended) as they are typically very long without openings.

Quote (KootK)

This is surely just my own ignorance but, can they really embed anchor bolts in brick like that and have a quality end product?

Welcome to the South! Yea, it is kind of a joke how these things are built.

Another similar issue is using a 2x4 wall on a monolithic slab. Most of the times, the bolts end up with about 1/2" of side cover!

RE: Garage Stem Walls Under Braced Wall Panels

We have been conditioned to think of brick as a non-structural veneer. I think that is mostly good practice, but in this case, from a strictly engineering mechanics point of view, I think an anchor embedded in the brick masonry is perfectly legitimate, but the problem is I think it would have very limited capacity because of the thin 4" wythe of brick. Then, even if you could develop a decent amount of anchor capacity, you would need quite a bit of 4" brick masonry to provide the dead load to resist the pullout. So, for those reasons, I don't think anchoring to the brick masonry works in practice. Not to mention the practicalities of constructability, how do you even embed a j- bolt in a single wythe of brick?... I guess with some creative chipping and of brick units?

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

White Paper: Industrial Control Basics: Contactors
A contactor is an electrical device used for switching an electrical circuit on or off. Considered to be a special type of relay, contactors are used in applications with higher current carrying capacity, while relays are used for lower current applications. Download Now
Research Report: State of IoT Adoption in Product Development 2019
This research report, based on a survey of 234 product development professionals, examines the current state of Internet of Things (IoT) adoption by product design teams, its perceived importance, and what features and capabilities teams consider important when making decision about adding IoT functionality to their products. Download Now
Research Report: Augmented Reality for Maintenance, Repair and Overhaul (MRO)
The term Industry 4.0 denotes a cluster of technologies that’s poised to fundamentally reshape manufacturing and bring about a new industrial revolution. These include 3D printing (AM), the Industrial Internet of Things (IIoT), artificial intelligence (AI) and mixed reality technologies, more commonly known as virtual reality (VR) and augmented reality (AR). Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close