Three Gable Timber Frame Garden or Patio Covering Pavilion

Build your own Three Gable Timber Frame style Pavilion.  Plans available for download in PDF Format.

See the How to Video.

My good friend Connor and his wife Sara asked me to help them build a pavilion in their back yard. They wanted a timber frame three gable structure so I modelled up a design in Sketchup and drew up some plans.


Build the Timber Frame Style Pavilion

Timber Frame Style Pavilion Gazebo for Backyard or Patio - post and beam
Watch this video on YouTube.

The Sketchup Model

The posts will sit on formed concrete piers. There’s two beams running North to South. And two beams running East to West. Corner braces add rigidity to the frame at the intersection of the beams and posts.

Animation of a Three Gable Timber Frame style Pavilion Gazebo Pergola
Sketchup model of pavilion

King posts sit mid span on the beams and support the upper ridge beams. Valley rafters run from the peak to the corners and support the jack rafters.

Animation of a Three Gable Timber Frame style Pavilion Gazebo Pergola
Valley and Jack Rafters

Common rafters finish the gable ends and the West facing roof slope.

Animation of a Three Gable Timber Frame style Pavilion Gazebo Pergola
Valley and Jack Rafters

Strapping is laid over these rafters and over the jack rafters on the Northeast and Southeast corners.

Animation of a Three Gable Timber Frame style Pavilion Gazebo Pergola
Valley and Jack Rafters

The roof is finished with plywood then metal sheet.

Animation of a Three Gable Timber Frame style Pavilion Gazebo Pergola
Metal roof panels over plywood

I have a full set of plans available for download. The overall dimensions are approximately 15’ x 14’ and 10’5” tall.

Building the Three Gable Timber Frame style Pavilion

Forms for the Footings and Piers

We cut into Connor’s deck and built batter boards to lay out the footings and concrete piers to support the structure. I used string drawn over the ledger boards to locate the center of each post.

batter boards used to position the concrete forms
Layout of post forms done with string and batter boards

The strings are kept taught with bricks. They can easily be adjusted or pulled out of the way if needed.

mason line hanging on bricks marking the center of the footing forms
Bricks hang from each end of the strings to keep lines tight

The string lines are squared so the posts are 10′ x 10′ on center.

On 10' x 10' centres
On 10′ x 10′ centers

I leveled the tops of all the forms so they would be on the same plane. I used a laser level to help with this.

Three Gable Timber Frame style Pavilion tops of forms on same level plane
With all post form tops on the same level I can then cut my posts all the same length

The pavilion is made from Douglas Fir rough sawn from a local mill.

The posts sit on adjustable galvanized saddles attached to an anchor bolt embedded in the concrete.

the post saddles and anchor bolts
Adjustable galvanized post saddles and anchor bolt

The plywood forms are coated on the inside with vegetable oil then concrete poured in.

poured concrete piers curing
Cement mixed in wheelbarrow, shoveled into pier forms, then anchor bolt worked in

They are covered with plastic and left to cure for several days.

poured concrete piers curing
Wet cement in pier forms covered with plastic to cure for several days

The screws are then removed and the forms stripped.

galvanized post saddles attached to concrete piers
Saddle attached to finished post pier
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