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!

*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.

Jobs

4 1/4" x 16 1/4" glulam

4 1/4" x 16 1/4" glulam

(OP)
Hi,
I am to perform a site visit on a building with the above size glulams spaced 8' o.c. in San Diego to observe what the client says is a 4" sag and has been ponding. I have a framing plan with this size, dated 1962, but no specifications for these beams. Most glulams I have seen in the West are Doug Fir and sized 3 1/8"x and 5 1/8" x and up. I can't recall encountering this size before. I am wondering if this beam sizing might be familiar to someone and if you could guide me to additional engineering specs.

Thanks!

RE: 4 1/4" x 16 1/4" glulam

2
A 4.25 X 16.25 is listed in the "Douglas-Fir Use Book", page 64. One of my copies is from 1958. I will scan the page and post it later. Pages 20 through 25 also talk about glulams of the era. Page 10 lists some stress grades, but not glulams specifically. You might check to see if the beams are stamped with a stress grade such as shown on page 9.

Mike McCann
MMC Engineering

RE: 4 1/4" x 16 1/4" glulam

Here is the information:

FYI, in one of the calculation example pages for glu-lam arches, I did notice a reference to 2200 psi glulams, so they were around at the time and available. Whether they were used in your case is up to you to find out though. 1600 psi would be conservative for bending.

Mike McCann
MMC Engineering

RE: 4 1/4" x 16 1/4" glulam

(OP)
I really really appreciate that.

RE: 4 1/4" x 16 1/4" glulam

2
Triangled:
When you really really appreciate, someone who has been really really helpful, like Mike has; that’s what the {“little pink stars” Like this post? Star it!} are for. You’ll find that right below Mike’s attachment box, in his second post. Click on it and see where it takes you, his effort deserves a LPS, from you. smile

RE: 4 1/4" x 16 1/4" glulam

Thanks dhengr, and you're welcome Triangled.

Mike McCann
MMC Engineering

RE: 4 1/4" x 16 1/4" glulam

(OP)
downloads from msquared....
opens....
i'll be... there they are! 4 1/4 x 16 1/4

reads dhengr. i see, said the blind man.

find the pink stars smile

thank you too dhenger, i appreciate that too!

RE: 4 1/4" x 16 1/4" glulam

(OP)
Bought the book online for $4.
Thanks msquared.

RE: 4 1/4" x 16 1/4" glulam

You're welcome. You won't regret the purchase.

Mike McCann
MMC Engineering

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


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