How to build a Gazebo

The next day / Head beams

The next day

All of the eight posts are now firmly setHow much the teeth are angled out on a circular saw blade. in place but the tops need to be trimmed off. (Remember, all the posts were longer than needed).

Ft and inch version: (metricMillimeter measurements. version below)

Measure from the ground 87″ up one of the posts (we are assuming the ground is reasonably level) and mark with a pencil.

With your set square, draw a pencil line around all four sides of the postsee PILE (87″) from the ground).
You will probably need a ladder or saw stool to do this.

Now, hammer a 4″ nailA short nail with a large flat head used for securing roofing felt, plasterboard, sheet metal to wood etc. partly into the outside edge of the post you have just marked on the underside of the pencil line.
Sit one end of a level on that nail and hold the other end level against the next post.
Mark the underside of the level with a pencil on the second post, checking of course, that the level is level, too.
If your level is not long enough to spanThe horizontal distance between supporting structures. from one post to the next, get a straight piece of lumberAny of the framing wood. 40″ long, and use that with the level sitting on top.
With your set square mark a pencil line around all four sides of the second post, and again hammer a 4″ nail partly in, the same as on the first post.
Repeat this action until all eight posts are marked.

Check that the pencil line on the last post is level with the line on the first post, if not, go around again with the level and find the discrepancies.

Trimming the posts

Cut off the top of the posts where you have marked, with a circular saw.
If the circular saw does not cut all the way through the post, finish the cut off with a handsaw. Make sure you have firm footingA base (in or on the ground) that will support the structure..
If necessary erect a scaffold about 2ft off the ground to help you reach.

Head Beams

For the head beams you will need eight pieces of 4×4 lumber 40″ long.
Pencil a square line at one end of the beamA supporting member. with your set square as shown in the diagram below and then pencil another line 22.5 degrees from the first.

Cut on this line with your circular saw.
If your circular saw does not cut all the way through the beam, finish the cut off with a handsaw.
Measure from the long point and along the beam 36 1/4″ and do the same cut that end as you have done the other end.
Another cut is required: 2″ long and square (right angles) to the edges just cut.
To achieve this, hold your set square against the newly cut edge and slide it along until you’re able to pencil a line 2″ long, square to the cut edge and finishing at the beams longest (faceThe widest side of a piece of wood.) edge.

Sounds complicated I know, but just follow the drawing in the circle. Also see fig 4.
Repeat this for all eight beams.

You now have all eight beams ready to sit in place.

Sit the eight head beams on top of the eight posts as per fig 4 and skew nail (toe nail) the beams to the posts with 4″ galvanizedCovered with a protective coating of zinc. nails.
Nail a 12″ long metal strapShort lengths of metal strap 25×1 (1/16×1) used to fix members together to resist uplift. plateThe top or bottom horizontal framing member of the wall. to the top side of each head beam join. Also see fig 4.
This will stopThe part of the plywood wall panels that overlaps the door and window frame, and protrudes into the door or window area and covers any gaps between the door/window and the surrounding frame. It acts as a stop for the door and also stops the rain getting in. any likely outward movement of the gazeboA freestanding, roofed, usually open-sided structure which provides a shady resting place. Usually square, hexagonal or octagonal shaped. If on the roof of a house, it is called a belvedere..
Nail the metal strap plates with 2″ (flathead) galvanized nails.

Metric version:

Measure from the ground 2200mm up one of the posts (we are assuming the ground is reasonably level) and mark with a pencil. With your set square, draw a pencil line around all four sides of the post (2200mm from the ground). You will probably need a ladder or saw stool to do this.

Now, hammer a 90mm nail partly into the outside edge of the post you have just marked on the underside of the pencil line. Sit one end of a level on that nail and hold the other end level against the next post. Mark the underside of the level with a pencil on the second post, checking of course, that your level is level, too! If your level is not long enough to span from one post to the next, get a straight piece of timber 1000mm long, and use that with the level sitting on top.

With your set square mark a pencil line around all four sides of the second post, and again hammer a 90mm nail partly in, the same as on the first post. Repeat this action until all eight posts are marked. Check that the pencil line on the last post is level with the line on the first post. If not, go around again with the level and find the discrepancies.

Trimming the posts

Cut off the top of the posts where you have marked, with a circular saw.
If the circular saw does not cut all the way through the post, finish the cut off with a handsaw.
Make sure you have firm footing and if necessary, erect a scaffold about 600mm off the ground.

Head Beams

For the head beams you will need eight pieces of timber 100×100 and 1000mm long. (Rough sawnRough sawn; Not gauged, planed or dressed. treatedPressure treated. Refers to lumber that is treated in such a way that the sealer is forced into the pores of the wood. Refers to lumber pressure sprayed with chemicals to lengthen its life expectancy for outside use or inground applications. pine, suitable for outside use.)
Pencil a square line at one end of the beam with your set square as on the diagram below and then pencil another line 22.5 degrees from the first.

Cut on this line with your circular saw.
If your circular saw does not cut all the way through the beam, finish the cut off with a handsaw.
Measure from the long point and along the beam 920mm and do the same cut that end as you have done the other end.
Another cut is required, this one 50mm square to the edges just cut.
To achieve this, hold your set square against the newly cut edge and slide it along until you are able to pencil a line 50mm long, square to the cut edge and finishing at the beams longest (face) edge.
Sounds complicated I know, but just follow the drawing in the circle.
Also see fig 4. Repeat this for all eight beams.
You now have all eight beams ready to sit in place.

Sit the eight head beams on top of the eight posts, see fig 4 and skew nail beams to posts with 90mm galvanized jolt head nails.
Nail a 300mm long metal strap plate to the top side of each head beam join. (Also see fig 4.)
This will stop any outward movement of the gazebo.
Nail the metal strap plates with 50mm cloutA short nail with a large flat head used for securing roofing felt, plasterboard, sheet metal to wood etc. head (flat head) galvanized nails.