Hill Lumber’s 3m x 3m pergola

solid 10 x 10 pergola

A solid free standing 3m x 3m pergola

A Hill Lumber project  By Les Kenny

No footings with this one. A great looking solid pergola

Preface

This 3m x3m pergola is a great looker. The beams and rafters are 140 x 45 dressed treated wood and the posts and braces are 90 x 90.
It is a very solid free standing structure. That means you don’t need any footings and it can be moved around (if you are tuff enough and have a few tuff mates).
The notches in the rafters fit into the notches in the top beams so they pretty much self align, and likewise with the top battens.

First up – the plans, then the materials list and cutting detail, followed by the instructions with plenty of pictures.

The Plans

pergola plans front view

pergola plans side view

pergola plans footprint view

Materials you will need

TIMBER

90 x 90 treated dressed timber:
4 @ 2400mm

140 x 45 treated dressed timber:
17 @ 3000mm

45 x 45 treated dressed timber:
12 @ 3000mm

BOLTS AND NAILS

1 kg 90mm Flat head galvanized nails.
24 only 12mm galvanized bolts 220mm long with nuts and washers.

Cutting detail

Note: The list in the ‘Materials you will need’ above, lists standard lengths (or increments of) that can be purchased at the yard.
The list below is the exact lengths you will need to cut from that listed above.

90 x 90 posts – 4 @ 2280
140 x 45 rafters/beams – 8 @ 3000 and 7 @ 2800, mark down 45mm each end of each piece and angle in 45 degrees.
90 x 90 braces – 4 @ 760, 4 @ 570, angle each piece in 45 degrees each end.
45 x 45 battens – 12 @ 2800

Instructions

Cut all the pieces according to the Cutting detail and the drawings above.
Then follow the step-by-step pictures and instructions below

The notches

The 4 top beams and the 7 rafters will need to have a series of notches cut in them. This is not only for appearances but they also help keep the structure in alignment.
The best way to do this is to lay the 4 top beams together and hold them in place with clamps. Do the same with the 7 rafters.
Then by following the plans below, mark the cut-out (notch) area across the beams/rafters.
The plan drawings below give the measurement to the first notch. That will be the same at both ends. All the intermediate notches will be spread evenly apart.

pergola plans notch detail

Set the blade on a circular saw to the required depth and make multiple cuts along the cut-out (notch area).
Then simply clean out with a chisel as shown in the picture below.

building a pergola - the rafter notches

building a pergola - the rafter notches

building a pergola - the beam notches

Let’s start the assembly

Fix a brace to each post as shown in the plan drawing and picture below.

building a pergola - the post brace

building a pergola - post and brace photo

Fix the posts and braces to the lower beams as shown on the plan drawing and picture below.

building a pergola - post and brace on a beam plan drawing

building a pergola - post and brace on a beam

Add the second lower beam to the opposite side of the posts as shown in the picture below. Use 90mm galvanized nails but be careful not to put any where the bolts are to go.

building a pergola - second beam on post and brace

Stand the two sides up. Clamp a length of wood to the bottom on each post to keep the balance as shown in the picture below.

building a pergola - post and beam stood up

Add the upper beams as shown on the plan drawing and picture below.

building a pergola - the front upper beam fixed in place

building a pergola - top beam added

Add the remaining braces and drill and bolt the beams to the post, two bolts at each join and one bolt through the beams at the top of each brace.

building a pergola - bracing added

Add the rafters and the top battens. The rafters will fit into the notches in the beams and the battens will fit into the notches on top of the rafters.

building a pergola - top battens added

Nail the top battens in place with 90mm flat head galvanized nails. All done!

building a pergola - top battens nailed in place

About the author
Les Kenny with a background in building, has been authoring DIY projects for his website www.buildeazy.com since 2001. He wrote two “DIY for Kids” books (co-authored with his daughter Roseanne) published in 2004 and 2005 respectively by Harpercollins.
www.buildeazy.com is populated with his work.
This content was authored specifically for Hill Lumber. © All rights reserved

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