Page 369 - Masonry and Concrete

Retaining Walls
368 CHAPTER TEN

BOND STONES 4 FT. ON
CENTER IN EACH COURSE

FIGURE 10-24

Bond stones in a dry-stack stone retaining wall.

are approximately the same shape below ground as the spread of the
limbs above ground. This should be a good guideline for how wide the
diameter of the tree well should be. Make the diameter large enough so
that when you excavate for the footing, you don’t cut any large roots.
Not only will this damage the tree, but it can also make the footing
unstable.

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