15×20 Pavilion Plans

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This step by step diy woodworking project is about a 15×20 outdoor pavilion plans. I have designed this rectangular pavilion made from 6×6 lumber. The frame of this pavilion is really sturdy and it also features a design that can match the style of any house. Take a look over the rest of our woodworking plans, if you want to get more building inspiration.

When buying the lumber, you should select the planks with great care, making sure they are straight and without any visible flaws (cracks, knots, twists, decay). Investing in cedar or other weather resistant lumber is a good idea, as it will pay off on the long run. Use a spirit level to plumb and align the components, before inserting the galvanized screws, otherwise the project won’t have a symmetrical look. If you have all the materials and tools required for the project, you could get the job done in about a day.

 

 

Projects made from these plans

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15×20 Pavilion Plans

Building a 15x20 pavilion

Building a 15×20 pavilion

 

  • A – 8 pieces of 6×6 lumber – 132″ long POSTS
  • B – 2 pieces of 6×6 lumber – 240″ long, 2 pieces of 6×6 lumber – 180″ long TOP PLATES
  • C – 16 pieces of 6×6 lumber – 36″ long BRACES
  • D – 2 pieces of 6×6 lumber – 42 1/4″ long, 1 piece – 240″ long, 2 pieces – 56″ long RIDGE BEAM

 One day

 

 

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How to build a 15×20 pavilion

Laying out the posts

Laying out the posts

The first step of the project is to layout the posts for the 15×20 pavilion. Use batter boards and string to determine the location of the posts. Apply the 3-4-5 rule to every corner of the pavilion, so you make sure they are right angled. Moreover measure the diagonals and make sure they are equal. Determining the location for the pavilion is essential, as you have to comply with the local building codes. Make sure the surface is level and remove the vegetation layer.

Posts

Posts

Level the surface with attention. Remove the vegetation layer, as well. Dig 3′ deep holes into the ground with a post hole digger. Align the holes with attention and then fit form tubes. Fit the 6×6 posts with attention and align them using string. Use a spirit level to plumb the posts and then lock them into place with temporarily braces. Fill the tube forms with concrete and let it dry out for a few days.

Top plates

Top plates

Use 6×6 lumber for the top plates of the gazebo. Use a circular saw to make the notches to beams, as shown in the diagram. Make parallel cuts inside the marked areas and then remove the excess with a chisel. Smooth the surface with sandpaper.

Fitting the top rails

Fitting the top rails

Fit the top plates to the top of the posts. Plumb the posts with a spirit level and make sure the plates are horizontal. Check if the corners are square and align the edges with attention. Drill pilot holes through the plates and insert 8″ screws into the top of the posts.

Fitting the braces

Fitting the braces

Use 6×6 lumber for the braces. Double check if the posts are plumb and if the corners are square. Cut both ends of the braces at 45 degrees and then secure them into place with 5″ screws, after drilling pilot holes.

Fitting the ridge beam

Fitting the ridge beam

Use 6×6 lumber for the ridge beam supports and for the bream itself. Use a spirit level to plumb the supports and secure them into place with corner brackets. Fit the top ridge into place and use corner brackets to lock them into place, as well. Check if the corners are square and align the edges with attention. Use 8″ screws to reinforce the joists.

Ridge beam braces

Ridge beam braces

Last but not least, you need to attach the 6×6 braces to the structure of the pavilion, so you can enhance the rigidity. Cut both both ends of the braces at 45 degrees and then secure them into place tightly, with 5″ screws.

15x20 pavilion plans

15×20 pavilion plans

You should check out PART 2 of the 15×20 pavilion plans, so you learn how to build the gable roof.

15x20 pavilion plans - Side view

15×20 pavilion plans – Side view

Fill the holes with wood putty and let them dry out for a few hours. Smooth the surface with 100-220 grit sandpaper and remove the residues with a damp cloth.

Top Tip: Apply a few coats of paint or stain to the components, to enhance the look of the project.

 

 

This woodworking project was about 15×20 outdoor pavilion plans free. If you want to see more outdoor plans, check out the rest of our step by step projects and follow the instructions to obtain a professional result.

 

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