height of pic: 3.75”

dress width at bottom: 3.5”

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x/3.5 = 59/3.75 my skirt width = 55”

height in pic: 3.75

dress width at bottom: 3.5

​

x/3.5 = 59/3.75 my width = 55”

36”

27.5”

4.5

x/4.5 = (x+36)/27.5

6.5

27.5”

42.5

hoop heights (from the waist) at: 10, 16.5, 23, 29.5, 36

hoop heights (from the top of triangle) at: 16.5, 23, 29.5, 36, 42.5

hoop radii (from the top of triangle) at: 10.7, 14.9, 19.1, 23.3, 27.5

14.5/42.5 = x/27.5

hoop circumference (from the top of triangle) at: 67.2, 93.6, 120, 146.4, 172.8

600” = 16 ⅔ yd = 15.2m hoop boning

50.6

x/50.6 = 4.5/27.5

8.3

42.3

36”

27.5”

4.5

6.5

27.5”

42.5

ruffle heights (or at least close enough): 0, 4, 8, 12, 16, 20, 24, 28, 32

hoop heights (from the top of triangle) at: 6.5, 10.5, 14.5, 18.5, 22.5, 26.5, 30.5, 34.5, 38.5

hoop radii (from the top of triangle) at: 4.2, 6.8, 9.4, 12, 14.6, 17.1, 19.7, 22.3, 24.9

hoop circumference (from the top of triangle) at: 26.4, 42.7, 60, 75.4, 91.7, 107.5, 123.4, 140.1, 156.5

50.6

8.3

42.3

total petticoat ruffle length = 827.7*2 = 1647.4

radius of panel = 50.6

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total skirt circumference = pi * 55 = 172.8

​

single panel arc length = 172.8 / 5 = 34.6

34.6

8.3

42.75 total = 41.75 (minus top and bottom seam allowance)

​

41.75/9 = 4 5/8

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2” of overlap

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.5 inch of seam allowance on bottom

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1.5” of ruffle being turned under on top

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ruffles are 8 ⅝ wide

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mark first ruffle 7 ⅛ up (includes ½” bottom SA)

all subsequent ruffles 4 ⅝ upª

See trix for ruffle lengths