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14' x 32' Hip Roof building

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Forum topic by cyberdave posted 09-13-2020 08:54 PM 1143 views 0 times favorited 18 replies Add to Favorites Watch
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cyberdave

4 posts in 372 days


09-13-2020 08:54 PM

Topic tags/keywords: framing generalconstruction

I’m in the initial stages of designing what I hope to be my storage shed / workout room once finished.

I’d like to have as much ceiling room as possible to hang gymnastics rings and pull up bar from the ceiling. I plan to use collar ties and plywood plates with wood glue and nails at the ridge beam.

I live in florida zone 10a so there will be no snow load. I’m planning to use TimberLok screws along with hurricane clips and yellow wood glue to tie all roof members to the top joist.

So my question is do I need ceiling joists with a hip roof at this 14’ x 32’ dimension?


18 replies so far

View CaptainKlutz's profile

CaptainKlutz

4859 posts in 2707 days


#1 posted 09-14-2020 01:35 AM

Welcome to LumberJocks!

Suggest you contact a licensed architect, structural engineering service, or the local building code AHJ in your area.

Gymnastic equipment is considered a LIVE load, and presents different structural requirements than static (or snow loads). Florida also has higher wind loading requirements for habitable structures, than standard tables.
While you might be able to get away than minimum requirements, something recommended on random internet forum; failure to met proper code(s) will negate any/all insurance coverage for the structure in case of loss. DAMHIK

Be safe, not sorry!

-- If it wasn't for bad luck, I wouldn't have no luck at all, Doom, despair, agony on me… - Albert King - Born Under a Bad Sign released 1967

View gdaveg's profile

gdaveg

318 posts in 415 days


#2 posted 09-14-2020 02:03 AM

Cyber D,

Yes I would contact a structural engineer. If you call an architect he will tell you the same. I am a structural engineer now retired after 40 plus years.

Now that you already have it built the retrofit will be more difficult.

But do get an engineer involved and tell him your plans and wishes.

Dave

-- Dave, Vancouver, WA & Tucson, AZ

View ibewjon's profile

ibewjon

2594 posts in 4006 days


#3 posted 09-14-2020 12:37 PM

Think about this. Where have you seen a building without ceiling joists?? There needs to be something to pull the walls together against the down and out pressure from the roof. Have you seen any building like this near you? If not, that would be your answer. It would be common practice if it worked due to reduced material costs and gained open ceiling space. Talk to a structural engineer.

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tomsteve

1182 posts in 2432 days


#4 posted 09-14-2020 04:21 PM



Think about this. Where have you seen a building without ceiling joists?? There needs to be something to pull the walls together against the down and out pressure from the roof. Have you seen any building like this near you? If not, that would be your answer. It would be common practice if it worked due to reduced material costs and gained open ceiling space. Talk to a structural engineer.

- ibewjon

although using collar ties was mentioned codes in some areas may say the plywood gussets suffice. fla zone 10 might be one of those places codes say plywood gussets suffice,although id put in collar ties.

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JohnDon

180 posts in 2382 days


#5 posted 09-14-2020 05:09 PM

flying buttresses?

View ibewjon's profile

ibewjon

2594 posts in 4006 days


#6 posted 09-14-2020 06:41 PM

That would look great on a shed!

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AndyJ1s

485 posts in 968 days


#7 posted 09-14-2020 07:02 PM

Is there even a ridge beam in the pictured structure?

Definitely seek professional design/analysis help.

-- Andy - Arlington TX

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cyberdave

4 posts in 372 days


#8 posted 09-14-2020 07:14 PM

Just thought I would clear a few things up:
The first picture is the current sketchup model of what I plan to build.
The second picture is something I pulled off of a commercial shed building company’s website gallery showing the internal framing for a 14’x32’ shed. “Just using that second pic as an example of what I want to do.“
I do plan to overbuild the rafters, using 2×6 instead of 2×4. And I plan to have a ridge beam with collar ties and large gusset plates on the common rafters.

I’m working on the hip roof design in sketchup and I’ll have a better 2d picture similar to the first pic but with the roof framing soon.

Thanks to everyone for responding to my post so far! I may heed the advice to send this to an architect for review but I would really rather not engage an architect.

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ibewjon

2594 posts in 4006 days


#9 posted 09-14-2020 09:54 PM

Not getting professional advice on this is called Pay me now, or pay me later. There is a recent post about advice for a shed / shop in tennessee. The writer ended up tearing up all he had done and starting over. Very expensive mistakes in that case. At least we now know you have not started construction.

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cyberdave

4 posts in 372 days


#10 posted 09-14-2020 10:06 PM

This image is a 2d representation of my hip truss framing. Notice the interior wall which allows for some bearing of the ridge beam.

Another question is regarding making the walls higher by 1’, after adding the gussets I’m only left with a 9’6” ceiling.

View bigblockyeti's profile

bigblockyeti

7561 posts in 2934 days


#11 posted 09-15-2020 02:48 PM

Are you planning on paneling or otherwise sheathing the interior? If not, you have the option of using studs in length of 8’, 8’ precut, 9’ precut or 10’ adding only to the cost of the exterior as you go up. If you are putting something up inside, it would make sense to have the walls a height that would require minimal cutting of whatever you’re putting up inside.

-- "Lack of effort will result in failure with amazing predictability" - Me

View tvrgeek's profile

tvrgeek

2260 posts in 2862 days


#12 posted 07-29-2021 12:01 PM

I for sure would add ceiling joists. Another option is a scissors truss.

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tvrgeek

2260 posts in 2862 days


#13 posted 07-29-2021 12:06 PM



I for sure would add ceiling joists. Another option is a scissors truss. Maybe not every position so if you need room is one area, skip one or two and just use collar tie higher.

- tvrgeek


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tvrgeek

2260 posts in 2862 days


#14 posted 07-29-2021 12:29 PM

Wondering your selection if wood glue (PVA?) vs structural glue? Cost? If I ever built again, I am a fan of full gluing sheets to make walls “stressed skin” structures. Also helps infiltration. Always thought about skinning about one of every 5 trusses as both structure and fire block. I am a big fan of massive overbuilding.

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ibewjon

2594 posts in 4006 days


#15 posted 07-29-2021 02:50 PM

Why not use a single pitch, shed style roof? Less cutting and waste. You will need larger rafters for the span.

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