Curved Wooden Pergola

Make a huge impact and add architectural dimension to your outdoor space with a custom pergola.

Curved Pergola

Instructions:

General: Cut and label the parts as needed, using the Cut List and Project Illustration as guides and adjusting for fit. This project was designed for a patio measuring 147 inches wide and 110 inches deep.

 

1 Add the posts.

Note: You’ll need at least two assistants for this step.

a. Lay out and cut the (01) posts and predrill holes as shown in Figure 1.

b. Position two (01) posts, spaced 16 inches apart, on each side of the patio. Scribe the positions of the (01) posts and predrilled holes.

c. Predrill for the 1/2-inch lag shields on each side of the patio at the scribed holes.

d. Attach the (01) posts to the patio using 12-inch carriage bolts and fender washers.

 

2 Create the four beam assemblies.

a. Lay out and cut the (02) arc beams, (03) lattice, and (04) curved beams, and predrill holes as shown in Figure 2.

b. On a large flat surface, position four (02) arc beams as shown in the outside face of the beam assembly in Figure 3. Apply glue to the face of each piece.

c. Cut one (02) arc beam in half.

d. Position each half (02) arc beam, two (04) curved beams, and one (02) arc beam as shown in the inside face of the beam assembly in Figure 3. Align all edges flush, and attach the outside and inside faces together using 2 1/2-inch screws.

e. Repeat Steps 2b–d to create three more beam assemblies.

 

Curved Pergola Curved Pergola

 

3 Attach the beam assemblies.

Note: You’ll need at least three assistants for this step.

a. Position one beam assembly with the outside face positioned backward on the back side of the two front (01) posts, line up the predrilled holes, and attach using 3 1/2-inch screws.

b. Position a second beam assembly with the outside face positioned forward on the front side of the two front (01) posts, line up the predrilled holes, and attach using 3 1/2-inch screws. Insert the carriage bolts through the predrilled holes starting at the front and attach the fender washers and nuts on the back of the assemblies.

c. Repeat to add the remaining two beam assemblies on the two back (01) posts.

 

4 Add the struts.

Note: You’ll need at least two assistants for this step.

a. Lay out and cut the (05) short struts and (06) long struts, and predrill holes as shown in Figures 4 and 5.

b. Position the (05) short struts on the outside edges of the (01) posts as shown in Figure 6. Attach to the (01) posts with 6-inch hex lag screws, and attach to the beam assemblies using 12-inch carriage bolts, washers, and nuts.

c. Position the (06) long struts on the inside edges of the (01) posts as shown in Figure 6. Attach to the (01) posts with 8-inch hex lag screws, and attach to the beam assemblies using 12-inch carriage bolts, washers, and nuts.

 

5 Add finishing touches.

a. Starting in the center of the assembly, position the (03) lattice parts equidistantly across the top of the beam assemblies, and attach using glue and 3-inch screws.

b. Sand and apply stain.

Click the image below to download all of the plans and figures.

Download the PDF 

Download the PDF 

 

Cut List

#

Part Name

Quantity

Material

Size (inches)

01

posts

4

8 x 8

7 1/4 x 7 1/4 x 115 1/4

02

arc beams

24

2 x 12

1 1/2 x 11 1/4 x 63 3/8

03

lattice

21

2 x 12

1 1/2 x 3 1/4 x 48

04

curved beams

8

2 x 10

1 1/2 x 9 1/8 x 63 1/16

05

short struts

4

4 x 4

3 1/2 x 3 1/2 x 46 13/16

06

long struts

4

4 x 6

3 1/2 x 5 1/2 x 91 9/16

Finished dimensions:

Height: 132 inches

Depth: 48 inches

Width: 224 inches


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Project Details
Tools You'll Use
  • circular saw with a straightedge guide
  • jigsaw
  • bandsaw
  • handsaw
  • drill/driver with 1/2-inch bit and 1/2-inch masonry bit
  • power sander with various grits of sandpaper
  • socket wrench set
  • stepladder
  • tape measure
  • paintbrush/rags
  • pencil
Lowe’s List

Skill level: Advanced

Lumber*
  • 4 boards, 2 x 10 x 12
  • 12 boards, 2 x 12 x 12
  • 2 boards, 4 x 4 x 8
  • 4 boards, 4 x 6 x 8
  • 4 boards, 8 x 8 x 10
Hardware & Supplies
  • 1 box (3 1/2-inch) screws
  • 1 box (3-inch) screws
  • 1 box (2 1/2-inch) screws
  • 20 (1/2- x 12-inch) carriage bolts
  • 12 (1/2- x 8-inch) hex lag screws
  • 4 (1/2- x 6-inch) hex lag screws
  • 36 (1/2-inch) fender washers
  • 20 (1/2-inch) hex nuts
  • 8 (1/2-inch) lag shields
  • wood glue (Titebond III)
  • 2 gallons of stain (Cabot Australian Timber Oil, Jarrah Brown)

*Availability varies by market. Treated southern yellow pine, cedar, and redwood are appropriate for this project.

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