Select the Place Timber Floor/Roof Joists at a Spacing tool.
In the Place Timber Floor/Roof Joists at a Spacing dialog, be sure to select the number of joists to place.
Select the first element at which the joists will begin.
Select the second element at which the joists will end.
If you are placing by Number, that number of joists will appear between the two members, evenly spaced. If you are placing by Maximum Spacing, the greatest number of joists that could be placed with no more than that space between them will appear, with the same amount of space at the beginning and end of the line of joists. If you are placing by Absolute Spacing, the greatest number of joists that could be placed with that exact space between them will appear. It will be possible that the distance between the last member and the end will be different from the distance between the first member and its end.
