Page 10
I
simply continued the procedure, working down the tower for each
section, making sure I set the separation between the ends of the tower
legs to the manufacturer's specs for face width.
The
leg splices and cross braces allow for a reasonable amount of
adjustment, so I used a taut nylon string as a straightness guide as I
added each section of tower. I ran a string along each of the
lower legs when I attached them for lateral straightness, then ran
a string along the third leg (visible here as the yellow line) for
straightness in the other direction as I tightened the two positioning
cross braces.
Here are the top four sections (#7 through #4) assembled and looking pretty.
I didn't have the luxury of a pre-assembled tower section to start the lower 30 feet of tower, so it was necessary to establish a planar surface for the first two legs. The two boards didn't have to be level, of course, but that's the easiest way to get planarity.
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