Fig. 21. In the colonnade, the 9, 12, 15 version of the 3-4-5
Pythagorean triangle provides all the dimensions.
a. place against the back wall
a 12x12 square; b. the diagonal of the square
is 17 piedi. This defines the distance to the front of
the piers; c. the hypotenuse rope is swung out
perpendicular to wall to mark the back of the pier at 15 piedi.
The depth of the pier is thus 2 piedi. The width of the
pier is simply 12 - 9 = 3 piedi. | back to text
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