Treelength Circumference Cap Rail

52" 13"

54" 13J6"

58" 14"

64" 1554"

68" 16"

INSIDE

TREE LENGTH CIRCUMFERENCE CAP RAIL*

72" 1674"

74" 1774"

76" 17W

80" 1874"

84" 19"

88" 1974"

90" 20"

INSIDE

TREE

LENGTH

CIRCUMFERENCE

CAP RAIL*

94"

2074"

96"

2174"

98"

21W

100"

21%"

102"

2274"

104"

22%"

106"

22"

108"

23%"

110"

2374"

112"

24^"

  • Rounded up to nearest 1m inch
  • Rounded up to nearest 1m inch

Calculating the dimensions of a tree bench

The size of some tree bench parts—the cap rails, aprons, and slats—depend on the circumference of the tree. Since the mitered cap rails hug the tree closest, their length along the inside (or shorter) edges is critical. Ideally, there should be a 1^-inch gap between the cap rails and the tree at the midpoint of each rail. Start by measuring the tree's circumference (simply wrap a measuring tape around the trunk at the cap rail height)

and' round your result up to one of the dimensions in the chart above. The same line on the chart will give you the required length of the cap rails along their inside edges. Cut the length of the other variable pieces—the aprons and slats—to fit.

If the tree circumference is less than 50 inches, use 12%-inch-long cap rails. If it exceeds 112 inches, you will need to build an octagonal bench—or find a smaller tree.

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