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


Light Gauge Studs with precast flooring

Light Gauge Studs with precast flooring

Light Gauge Studs with precast flooring

Hi Everyone,

Wondering if anyone has experience with Light Gauge Steel Studs and precast (coreslab or other) decking. I have a project where we are using LGS and have typically seen/used comslab or other poured in place systems with LGS in the past. Contractor is quite adamant that coreslab is the better option for construction efficiency, etc. My concern is the comslab works well with the LGS as it is a Bailey product (designed for LGS applications) and I prefer the poured in place connections to the coreslab.

Has anyone ever had a positive experience with LGS and precast decking?

Thanks in advance.

RE: Light Gauge Studs with precast flooring

I've done it several times, both as EOR and as precaster. Certainly, it can be made to work with the right detailing. That said, I'm currently involved with one of these as a forensic case. So yeah, proceed with caution. I found this handy: Link. Structuremag also has a couple of articles on this.

My biggest beef with these things is when folks use a gypsum topping rather than a structural concrete topping. The lizard parts of my brain that still think engineering matters get offended. If you're on the east coast, there's a pretty good chance you'll get pushed in that direction, and hard.

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: Light Gauge Studs with precast flooring

My problem with all this mid-rise LGS construction is that there is a good chance the studs will not be braced properly - either from a design or construction perspective. Seen it too many times in the field. I feel it is one of those areas that is too complex for the average installer to install, the average inspector to inspect or the average design engineer to design.

RE: Light Gauge Studs with precast flooring

Great link KootK. I've not dealt with precast on top of LGS but I've seen a lot of LGS going up locally these days so I'm sure I will eventually get dragged into it.

I'm sure you can't comment in detail but, in very broad strokes, what component/area was it failed on the forensic case project? I'm guessing moisture related (it's always moisture...), whatever direction you can point me in would be great as I'd love to learn more about precast/LGS interaction and the pitfalls involved.

Ian Riley, PE, SE
Professional Engineer (ME, NH, MA) Structural Engineer (IL)
American Concrete Industries https://www.facebook.com/AmericanConcrete/

RE: Light Gauge Studs with precast flooring

The issues stem 100% from EOR incompetence I'm afraid. And a good chunk of that seems to have resulted from a lack of familiarity with the design and detailing issues that affect this kind of structure. Not rocket science either. Fifteen minutes of googling "hollow core on cold form" and 90% of the stuff would have been resolved.

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.

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!


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