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StructuralEng
StructuralEng, Consultant
Category: Structural Engineering
Satisfied Customers: 6682
Experience:  Structural Engineer
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I am going to put a gable style peaked roof, not a lean too

Customer Question

I am going to put a gable style peaked roof, not a lean too style because it would have little pitch over my deck which is 31ft 4in long and 18ft deep. Do I only need posts along the 31ft, what load rating per post. My plan is to have spacing 7ft-7ft-3ft4in-7ft-7ft. Do I need post at each location?
Submitted: 1 year ago.
Category: Structural Engineering
Expert:  StructuralEng replied 1 year ago.

Hello. How are you doing? I'll be happy to assist you

Customer: replied 1 year ago.
If I could get the plan for the posts, size, and headers needed to build the roof it would be great. If you need the spacing of my posts on each of the 18ft ends, let me know.
Expert:  StructuralEng replied 1 year ago.

A question is supposed to be limited to a single question. I can answer all of these and provide a .pdf plan as an additional service, if you want.

Expert:  StructuralEng replied 1 year ago.

drawings are not part of the basic service.

Expert:  StructuralEng replied 1 year ago.

I will also need additional information.

Expert:  StructuralEng replied 1 year ago.

Will you have joists connecting opposing rafters at the eave level or do you want a vaulted ceiling?

Customer: replied 1 year ago.
What service do I need to upgrade to for the plans?
Expert:  StructuralEng replied 1 year ago.

I will submit the additional service offer. Can you please upload a generic dimensioned hand sketch so I can get a complete understanding of what you're looking for.

Expert:  StructuralEng replied 1 year ago.

And also answer about the vaulted ceiling or joists.

What city and state so I can look at snow loading?

Customer: replied 1 year ago.
Might be nice to see vaulted and joists options. I am in Lancaster, PA. Hopefully the attached pictures and sketch helps. The pictures before deck tore down is only 24ft long and 18ft wide. Now will be 31ft 4in long and 18ft wide.
Customer: replied 1 year ago.
This is where the new deck will end roughly.
Expert:  StructuralEng replied 1 year ago.

The vaulted structure will be more robust.

Expert:  StructuralEng replied 1 year ago.

Will the new ridge be perpendicular to the existing ridge?

Expert:  StructuralEng replied 1 year ago.

Is the 18' direction parallel or perpendicular to the house?

Customer: replied 1 year ago.
Why will the vaulted structure be more robust?
Expert:  StructuralEng replied 1 year ago.

The vaulted ceiling requires a ridge beam instead of a ridge board.

Customer: replied 1 year ago.
Do you mean the ridge on the left or the offset from the end of house on left side? It is offset by one 10inch block.
Expert:  StructuralEng replied 1 year ago.

I don't understand your early comment on the spacing and asking if you need a post at each location. Can you clarify that?

Expert:  StructuralEng replied 1 year ago.

The ridge of the gable roof you want

Customer: replied 1 year ago.
If you look at the sketch I uploaded it shows where the house is and all the dimensions for the posts, railing, steps, etc.
Customer: replied 1 year ago.
If you mean the new peaked roof over the deck to be running perpendicular to the house roof only lower, then yes. I realize the one window on the 2nd story left may need to be moved a foot or so to the left depending on the pitch of the new roof.
Expert:  StructuralEng replied 1 year ago.

Please attach that again. I only see 4 photos

Customer: replied 1 year ago.
Here is the pdf sketch and one pic. I did send the pdf and 6 pictures earlier.
Expert:  StructuralEng replied 1 year ago.

You will need posts on the 18' side and on in the middle of the 31' side or a very big beam.

Do you want me to submit an offer for both options? It will be PDF plans only, not signed and sealed.

Customer: replied 1 year ago.
How much is it for the pdf plans each?
Expert:  StructuralEng replied 1 year ago.

I can't discuss cost in the chat. I will submit for one option only. If you want the other you can ask another question. The second will be less cost.

Customer: replied 1 year ago.
Attached is the sketch with more dimensions if helpful.
Customer: replied 1 year ago.
Can I get plans for a lean too roof option as well?
Customer: replied 1 year ago.
Ok, will you do the plan without the very large beam then please.
Expert:  StructuralEng replied 1 year ago.

I'm sending the offer now

Expert:  StructuralEng replied 1 year ago.

I see you said withOUT the large beam. I will do it without the vaulted ceiling, then.

Customer: replied 1 year ago.
just to clarify the vaulted ceiling is the one that requires a large beam... Correct? Then, yes do the option without the vaulted ceiling. I think I would like to do the lean too type roof as well, since that option would be simpler and cheaper... although the pitch on the roof will be small almost flat.
Customer: replied 1 year ago.
The offer you sent me is for a vaulted ceiling.
Customer: replied 1 year ago.
The more I think about it I believe I may rather just go with a lean to option. If I go with the lean too option will I need posts along both 18ft as well as the 31ft?
Expert:  StructuralEng replied 1 year ago.

Yes, I corrected that above after I sent the offer. If you go with the lean-to you will just need posts along the 31 ft side only or else a big beam spanning that 31'.

Expert:  StructuralEng replied 1 year ago.

Hello. Do you have any other questions on this topic? If you could rate my answer, I would appreciate it.

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