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SPECIFICATIONS
This lovely 18x12 timber frame pavilion plan is a perfect size to fit in practically any landscape, yet large enough for so many purposes. You could create a dining pavilion, great workshop or sweet backyard retreat. We actually give you two plans when you purchase this 18x12 timber frame pavilion! We include a full plan set designed as a standalone structure, and a second one planned as a porch to be attached to an exterior wall of your home. You will love showing off your skills with the gently curved braces and embellished rafter ends.
This structure measures 18 feet x 12 feet from outside to outside of the posts. It is a single bay design that creates a totally clear floor space. There are generous 2 foot overhangs. The top of the top plate stands at +9’-3” high,and the top of the rafters are +17’-7” high. The roof pitch is 8 in 12. This frame utilizes 2218 board feet including 8x8, 8x10, 6x8, and 6x10 timbers
As soon as you make your purchase, you will receive links to download the pdfs of the plan sets. They are formatted to print best on 11”x17” paper, but you can print a set from home on letter size paper for study purposes. Both plan sets include 10 pages full of all the information you need for success: 3D drawings, post and rafter plans, section drawings, and detail drawings of the more complex areas of the frame. Both piece drawings sets include 17 pages showing you every cut you will make on each timber. And the pieces are labeled to match the 3D drawings on the plan sets, so you know exactly where each one fits in the frame.
For more information about this plan please visit its shop page at 18×12 Timber Frame Pavilion Plan. This plan is included in our Plan Bundle.




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Important Information:
Timber Frame HQ provides plans for construction purposes but does not oversee the construction. The plan purchaser is responsible for assuring the plan meets local codes and regulations. It is the responsibility of the plan purchaser to obtain any and all structural analysis, engineering and specifications that may be required in the municipality in which it is to be built. Plan purchaser is to verify all lot conditions and measurements before construction. Purchaser is responsible for additional expenses incurred in order to meet local code and engineering requirements.
Customer understands that the following conditions in your specific area may require additional engineering:
- Wind / hurricane / tornado
- Seismic / earthquake
- Heavy snow
- Flood potential
- Soil instability
- Timber Frame Engineering
Customer understands that HVAC, Plumbing & Electrical will not be included in all plans.
Plan Licensing Agreement:
PLAN PURCHASES AND GRANT OF LICENSE
This Copyright License Agreement (herein “Agreement”) governs your license with regard to the plans provided to you by Timber Frame HQ (“Timber Frame”).
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Subject to the terms of this Agreement, Timber Frame grants you a non-exclusive, non-sub-licensable and non-transferable license to use the plans purchased from the Timber Frame website or otherwise provided to you by Timber Frame (the “License”).
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Use of License.
Only you may use the License, and such use shall be limited as stated above. While Timber Frame HQ provides plans under the License for construction purposes, Timber Frame does not oversee the construction. Your are responsible for assuring the plan meets local codes and regulations. It is your responsibility to obtain any and all structural analysis, engineering, and specifications that may be required in the municipality in which it is to be built. You are to verify all lot conditions and measurements before construction. You are responsible for additional expenses incurred in order to meet local code and engineering requirements.
When you purchase a set of plans, you are purchasing a limited copyright license for a design giving you the right to build that structure one time at your location. Your License was granted when you paid the purchase fee. You do not have the right to build the design a second time unless you have a signed agreement with Timber Frame HQ.
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This looks awesome!
Is it possible (would it be difficult) to double this up for an 18×24? That would be perfect for my workshop.
Mark
That would not be a problem, you would just need to mirror the frame. We are happy to make that adjustment in our custom design dept. or that would be easy to do in your shop.
What would the cost be for this plan to be modified to reflect an 18′ x 24′ pavillion? Thanks
We do take on custom projects and would like to talk to you further about yours. Check out our page, HERE, describing what we offer and the process of our custom design services.
Fill out the design questionnaire so we can understand your needs. That’s the best way to communicate with our team and get an estimate for design services. With that being said, extending a frame parallel with the ridge is one of the lesser expensive alterations.
What is the roofing sheathing typical for timber frame pavilions? It looks like some kind of 2x material and not plywood. Thank you in advance.
There are many options for roofing your timber frame. If you want to use tongue and groove so it looks amazing from the inside, here is what we recommend:
You can use 3/4″ T&G then put 2×4’s length-wise as a spacer, then put metal roofing straight on the 2x4s and screw them off. If using shingles you will need to add a layer of sheathing to give you the nail base on the 2×4’s. This will also give you space to run any electrical wires.
Alternatively, you can use 2x T&G and put the roofing straight onto that.
Could this be bumped out to 20ft wide and 24 ft long?
Yes it could, it would require quite a bit of custom design. Check out our page, HERE, describing what we offer and the process of our custom design services.
Can this be scaled down to 10×12 want to build this just a bit smaller!
We offer this 10×12 Shed Plan or if that doesn’t suit you we could help you through our Custom Design department.
Can this plan be scaled for 18×15, without adding another post in between?
The collar would need to be deeper, how deep depends on the snow load on the roof. However, a 15′ clear span could possibly work. If you would like help with the changes, please check out our Custom Design page.
Possible in 15 meters in large, for 20 meters in long?
That would be a custom design. Check out our page, HERE, describing what we offer and the process of our custom design services. Fill out the design questionnaire so we can understand your needs.