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

Finding beams on wood roofs

Finding beams on wood roofs

(OP)
Hi, I am seeking advice from anyone with experience in large residential, flat wooden roofs. I want to map out the support beam structure under flat roofs without having to rip open the roofing. Pic below. Most old buildings in NY City don't have any blueprints. I'm looking for something better than the wooden mallet technique to locate the load bearing beams. Any reliable stud finders or other techniques you'd recommend? Thanks.

Note: This is for ballast mounting solar project. I'm in the process of gathering all data to be reviewed by a structural PE consultant.





RE: Finding beams on wood roofs

Well, I can read a couple of major beam lines from the photos. A site visit could tell much more from the deflection pattern of the roof.

Mike McCann, PE, SE (WA)


RE: Finding beams on wood roofs

(OP)
Interesting, thanks. Taking the liberty to add a few photos of the above sample roof.

Northern section of the roof:



Southern section of the roof:

RE: Finding beams on wood roofs

Thermal imaging cameras might pick up the beams. Depends on the thickness of the roofing. Might be better from underneath.

Check out Eng-Tips Forum's Policies here:
FAQ731-376: Eng-Tips.com Forum Policies

RE: Finding beams on wood roofs

Go in through the bottom. That's really the best thing to do. The structural will likely insist on seeing the actual wood anyway.

Please remember: we're not all guys!

RE: Finding beams on wood roofs

(OP)
Thanks JAE and SLTA. Agree, opening up the dry wall ceiling is probably easier than the roof.

Would still appreciate any product recommendation for a thermal imaging camera and stud-finder that worked well for you. Thanks!

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