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18×24 Timber Frame with Purlins

18x24 Timber Frame Plan

This 18×24 timber frame with purlins has great architectural detailing. The struts and knee braces gently curve, creating a beautiful structure. The rafters and purlins of the steeply pitched 12 in-12 roof create their rhythm – top them with simple metal roofing or add a tongue-in-groove ceiling to make a wonderful space.

The 18×24 footprint is large enough for many different uses – a combination of an outdoor kitchen and dining pavilion, a sweet detached guest house, a beautiful carport, or even a generous great room addition to your home. Whatever you use it for, you will be proud to show off your cutting and framing skills when the project is done!

The 25-sheet PDF plan set is ready to download once you purchase it. The drawings for this 18×24 pavilion with purlins include renderings, a timber schedule, plan, elevation, and sectional drawings, along with piece drawings showing each cut on every timber. There are also 3D drawings so you can visualize the project. The plan set is formatted at 8 /2″ x 11″, so you can easily print it at home or your neighborhood copy shop.

Check out this plan in our shop: 18×24 Foot Timber Frame Pavilion Plan.

18x24 pavilion with purlins side view

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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:

  1. Wind / hurricane / tornado
  2. Seismic / earthquake
  3. Heavy snow
  4. Flood potential
  5. Soil instability
  6. Timber Frame Engineering

Customer understands that HVAC, Plumbing & Electrical will not be included in all plans.

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 copyright 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. Please note that copyright law protects “derivative works” the same as it protects the original design. That means that making some changes doesn’t make it a new design. We do not allow modifications of our designs by others, without permission. Your copyright license does not allow another professional to represent our design work as their own.

Timber Frame HQ retains all common law, statutory and other reserved rights, including the copyright. This applies even when you have participated in the development of the design to a significant degree.

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29 thoughts on “18×24 Timber Frame with Purlins”

  1. Does this come with different roof pitch?
    What is total length and width of structure?
    What is the total height?

  2. The total height is 18’8 1/16″ to the top of the ridge in the drawings. It is 18’wide x 24′ long from outside of post to outside of the post 2′ overhangs all the way around it. We don’t have this design in any other roof pitches. We can create one with a different roof pitch though, check out our custom design services page.

  3. Matthew Stevens

    Yes, you can use all mortise and tenons in this frame. The tie beam is in sustain tenon and so we recommend the all-thread connection.

  4. Would it be possible to see the timber requirnments. Kinda need to price these out first to make sure I can afford the timbers.

  5. Katrina Williams

    Hello Matt: we just sent you an email with the timber list. Thank you for your interest!

  6. I was hoping to see a cost breakdown for materials before buying the plans. Is this possible?

  7. Matthew Stevens

    We do not have a cost breakdown of the materials. It will depend greatly on what species you are using and your location.

  8. FRANCIS CAMPBELL

    Hi,
    I was wondering two things.
    Do you have a metric version of the plans?
    What is the internal floor area (in-between supports) ?

    Thank you

  9. FRANCIS CAMPBELL

    Hi,
    Do you have these plans in metric?

    And do you have the internal floor area?

    Thanks!

  10. Katrina Williams

    Francis, we do not offer this plan in metric at this time. There are many conversion sites on the internet that could help you, however.

    The dimensions are 18′ x 24′ from outside of post to outside of post. So the floor area is 432 square feet.

  11. I need a 18’ x 20’. I assume I could use this plan and make the appropriate adjustments.?.? Could I also get a timber list? I’m trying to get an idea of species cost difference. Thanks!

  12. Can this be done in a post and beam connector style? Is it as simple as doing the joinery with connectors?

  13. Matthew Stevens

    Yes, it can be converted to a post and beam plan. Some of the joints are in tension and I would recommend leaving the all-thread connection there.

  14. Is that something that’s easy to do or can I request an actual different version that specifies post and beam

  15. Katrina Williams

    Whether it’s easy or not depends on your level of experience with timber frame- but if you would like us to modify that as a post and beam, check out our Custom Design services.

  16. What is the clearance height to the first horizontal beam? I have a boat that needs 13’6″. Do you think this could work? Also, please send me the timber list.

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