Installing the posts for the 22.5 degree corners is a bit more
challenging. We decided to set each post so that it bisected the 22.5
degree angle. Notice the slight offset angle of each railing post in
This had a couple of benefits. First it meant that the angles for
the bottom and top rails of the railing sections would be identical from
both sides of the post. Secondly, it would look balanced to the eye.
One of the corners had three joists meeting. The other had only two joists meeting.
To determine the cuts to be made for the notches, we placed the post
on top of the joists in its final position and traced out the
intersection points of the various joists to layout the cuts. The angle
was 11.25 degrees, half of 22.5 degrees.
The other corner had two joists meeting at a 22.5 degree angle.
Again, we set the post on top of the joists at the 11.25 degree
angle to equally bisect the corner and then traced out the intersection
points of the converging joists.
The notches were cut and the post was set into position, leveled with shims and screwed into place.