Process for consulting with a structural engineer

7 years ago

We bought a house with a converted patio. We were hoping to eventually replace the run of fixed windows + patio door in the converted patio with a double sliding door. However, based on the location of the roofline, the height of the outside wall, and the likelihood that's it's load-bearing, DH thinks there's not enough space for an adequately sized header to support such a wide opening and is probably why the room is designed the way it is. We didn't notice this at any of our visits prior to purchase -- can't believe we didn't notice -- but too late now. I would like to consult with a structural engineer about what options might be open to us so we can start making new plans whatever they might be. Where do I start looking for this kind of expert?

Featured Answer

catinthehat

7 years ago

Hi melle,

I am a licensed civil engineer. What you are looking for is a licensed/registered civil engineer who specializes in structures and is familiar with your local residential building code. The common acronym is “PE”. A licensed structural engineer (or SE) is only required for very uncommon structures such as hospitals. No problem if they have their SE, but may be more expensive. Most major cities will maintain a list of registered businesses within their city limits offering professional services. They can usually be found online these days. Whichever you go with make sure you check/call references just like you would a contractor.

That being said, structural steel can make many designs possible where wood would not have the room. A competent civil engineer who is experienced should be able to tell you verbally what is possible within an hour or so of work. They will usually just roll that hour of work into your total fee if you want plans drawn and stamped. Don’t get stamped drawings until you’ve gotten a permit from the city though, you want your engineer to accommodate whatever their inspectors are interested in. Good luck!

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Comments (6)

PRO
GN Builders L.L.C
7 years ago
last modified: 7 years ago
How wide is the opening? Can you post a few pictures of the wall from the outside and inside.

There are many options and many types of headers can be used, not to mention they can be larger and recessed by removing the double plates, etc. Post a few pictures so you can get some suggestions.

That said, you can get any local architect who can calculate the load and provide the header size details.
melle_sacto thanked GN Builders L.L.C
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melle_sacto
Original Author
7 years ago
Thank you both! When I'm back at the house on Wednesday I'll take some photos to post. I really appreciate the guidance on who to bring in for a new plan!

This wall has really become a conundrum because it's also where we hoped to install a small dog door but the space below the windows is ever-so-short; DH is looking to do some creative customization at this point!
melle_sacto
Original Author
7 years ago
last modified: 7 years ago
I'm back with photos! Thanks for any thoughts or advice; for now we have to live with the space as-is (and it's a nice flex space for sure). Ultimately though, I would like to find a way to install double sliders because it could be so much nicer that way!

I still can't believe we didn't realize how short the door/window wall was :-0 I guess we could chalk that up to being short people LOL! Sorry for all the junk stowed in there, we are still working on the house.
PRO
GN Builders L.L.C
7 years ago
It is doable, you will have to do some roof rafter modification... just call a local architect and he will calculate the loads and come up with an appropriate header and all the details.

Get a slider that requires an opening with 80 1/2" height so you have room for a header.

Good luck
melle_sacto thanked GN Builders L.L.C
PRO
Charles Ross Homes
7 years ago
Hi, Melle,

For structural modifications not addressed in the prescriptive code, you'll be well served to have a licensed professional engineer produce sealed plans for you to submit to your building dept along with your permit application. Last time I checked, the majority of states did not have separate professional licensing for "structural" engineers, but your state may.

I also recommend you choose an engineer who does residential structural design work; they will be more familiar with the preferences and limitations of remodelers than an engineer who designs commercial structures.

Depending on how thorough your building inspectors are, you may also wish to have the engineer inspect the work after completion to confirm that it was performed according to the approved plans and specifications.

Best wishes for a successful project.
melle_sacto thanked Charles Ross Homes