Build your own Curved Rafter Cedar Pergola. This pergola design incorporates curved sawn rafters made of Western Red Cedar. Plans available for download in PDF Format.
See the How to Video.
For this blog post I’d like to go back and revisit a curved pergola I built with my friend Doug a few years ago. As far as pergola designs go I think this one is unique.
the Pergola Design
The Sketchup Model
The pergola is made from rough sawn Western Red Cedar and sits on the lid of an underground 2800 gallon concrete cistern. The homeowners collect rainwater in the cistern for use on their gardens in the summer months.
Overall Pergola Dimensions
The six posts are spaced 8′ apart across the front, and about 6’6″ on the sides.
The overall height of the curved pergola is 9’5″ with a head clearance of 7’3″.
The posts are 6x6 and, in this particular installation, simply are held in place by weight and galvanized alignment rods that are set in shallow holes in the concrete lid and up into the bottom of each post.
Alternatively the posts could be attached to concrete footings with galvanized saddles.
Two 6x6 beams are bolted to the posts and run North to South.
Fourteen curved rafters are attached to a 6x6 beam and a 2 by 9-1/2″ ridge beam.
Along the sides of the pergola are 8 curved corner braces.
There are 6 slightly larger curved braces that stiffen the structure side to side and add support to the rafters.
Topping the structure are three 2x4 louvers.
The number and spacing of the louvers can be changed to increase the shade under the pergola.