11 Sided Polygon Rafter Table ( 11 - gon )


central angle = 32.7272727272727
working angle = 16.3636363636364
plan angle = 73.6363636363636
miter angle = 3.52 & 12 (16.36)
hip run per foot = 12.51
apothem multiplier = 1.04222
side wall multiplier = 0.58725

Pitch

Roof Angles

Frieze Block Angles

Hip Rafters

Jack Rafters

Roof Pitch

Angle

Hip Pitch

Angle

Angle

Saw Bevel

Side Cut

Angle

Backing Angle

Hip Drop

2x

Hip Drop

4x

Length

Per-FT

Side Cut

Angle

First
12 O.C.

First
16 O.C.

First
24 O.C.

Spaced
12 O.C.

Spaced
16 O.C.

Spaced
24 O.C.

Multiplier

0

0.00

0.00

0

16.3636363636364

16.36

0.00

0.00

0.00

12.51

16.3636363636364

43.31

56.94

84.18

40.87

54.49

81.74

3.40569

1

4.76

4.57

1.40

16.31

16.31

1.34

0.02

0.04

12.55

16.31

43.46

57.13

84.47

41.01

54.68

82.02

3.41749

2

9.46

9.09

2.76

16.13

16.17

2.65

0.04

0.08

12.67

16.15

43.91

57.72

85.34

41.43

55.24

82.86

3.45266

3

14.04

13.49

4.07

15.86

15.94

3.92

0.05

0.12

12.86

15.90

44.65

58.69

86.77

42.13

56.17

84.25

3.51050

4

18.43

17.74

5.30

15.50

15.62

5.11

0.07

0.16

13.13

15.57

45.66

60.02

88.74

43.08

57.44

86.16

3.58991

5

22.62

21.79

6.44

15.07

15.25

6.22

0.09

0.21

13.47

15.17

46.92

61.68

91.20

44.27

59.03

88.55

3.68949

6

26.57

25.63

7.48

14.60

14.83

7.24

0.11

0.25

13.87

14.72

48.43

63.66

94.12

45.69

60.92

91.38

3.80767

7

30.26

29.24

8.42

14.08

14.37

8.16

0.12

0.29

14.33

14.23

50.15

65.92

97.46

47.31

63.08

94.63

3.94278

8

33.69

32.61

9.25

13.56

13.89

8.99

0.14

0.33

14.85

13.73

52.06

68.43

101.18

49.12

65.49

98.24

4.09313

9

36.87

35.74

9.99

13.03

13.41

9.73

0.16

0.37

15.41

13.22

54.14

71.17

105.23

51.09

68.11

102.17

4.25711

10

39.81

38.65

10.65

12.50

12.92

10.39

0.18

0.41

16.01

12.71

56.38

74.12

109.58

53.20

70.93

106.40

4.43321

11

42.51

41.33

11.22

11.99

12.43

10.97

0.19

0.45

16.66

12.21

58.76

77.24

114.20

55.44

73.92

110.88

4.62005

12

45.00

43.82

11.73

11.49

11.96

11.49

0.21

0.49

17.33

11.73

61.26

80.52

119.05

57.80

77.06

115.59

4.81637

13

47.29

46.11

12.18

11.02

11.51

11.95

0.23

0.53

18.04

11.26

63.86

83.94

124.11

60.25

80.34

120.51

5.02106

14

49.40

48.22

12.57

10.56

11.07

12.35

0.25

0.58

18.77

10.82

66.56

87.49

129.35

62.80

83.73

125.60

5.23315

15

51.34

50.18

12.91

10.14

10.65

12.71

0.26

0.62

19.53

10.39

69.34

91.14

134.76

65.42

87.23

130.84

5.45176

16

53.13

51.99

13.22

9.73

10.25

13.03

0.28

0.66

20.31

9.99

72.19

94.90

140.30

68.11

90.82

136.23

5.67615

17

54.78

53.66

13.49

9.35

9.87

13.31

0.30

0.70

21.10

9.61

75.11

98.73

145.98

70.87

94.49

141.74

5.90565

18

56.31

55.21

13.73

8.99

9.51

13.56

0.32

0.74

21.92

9.25

78.09

102.65

151.76

73.68

98.24

147.35

6.13969

19

57.72

56.65

13.94

8.65

9.17

13.78

0.33

0.78

22.75

8.91

81.11

106.63

157.65

76.53

102.04

153.07

6.37778

20

59.04

57.98

14.13

8.33

8.85

13.98

0.35

0.82

23.59

8.59

84.19

110.67

163.62

79.43

105.91

158.87

6.61947

21

60.26

59.22

14.30

8.04

8.54

14.16

0.37

0.86

24.44

8.29

87.30

114.76

169.68

82.37

109.83

164.75

6.86438

22

61.39

60.38

14.45

7.75

8.26

14.32

0.39

0.90

25.31

8.00

90.46

118.90

175.80

85.35

113.80

170.69

7.11219

23

62.45

61.46

14.59

7.49

7.98

14.46

0.40

0.94

26.18

7.73

93.64

123.09

181.99

88.35

117.80

176.70

7.36260

24

63.43

62.48

14.72

7.24

7.73

14.60

0.42

0.99

27.06

7.48

96.85

127.32

188.24

91.38

121.85

182.77

7.61535


Framing Square usage Example: 8:12 Pitch
(Rafter Length Per Ft = 14.42) (Hip Rafter Length Per Ft = 14.85)
SS Angle = Speed Square Angle
Saw Angle produces compound Speed Square Angle
 
Tongue (8.00) Blade (12.00) for Rafter Plumb Cut Angle (SS Angle 33.69)
Tongue (12.00) Blade (8.00) for Rafter Level Cut Angle (SS Angle 56.31)
 
Tongue (8.00) Blade (12.51) for Hip Rafter Plumb Cut Angle (SS Angle 32.61)
Tongue (12.51) Blade (8.00) for Hip Rafter Level Cut Angle (SS Angle 57.39)
 
Tongue (3.67) Blade (14.85) for Hip Side Cut Angle (SS Angle 13.89) (Saw Angle 73.64)
Tongue (2.35) Blade (14.85) for Hip Backing Angle (SS Angle 8.99)
 
Tongue (3.52) Blade (14.42) for Jack Rafter Side Cut Angle (SS Angle 13.73) (Saw Angle 73.64)
 
Tongue (2.35) Blade (14.42) for Purlin Rafter Plumb Cut Angle (SS Angle 9.25) (Saw Angle 8.99)
Tongue (3.52) Blade (14.42) for Purlin Rafter Cross Cut Angle (SS Angle 13.73)
 
Tongue (2.35) Blade (14.42) for Roof Sheathing Plumb Cut Angle (SS Angle 9.25) (Saw Angle 8.99)
Tongue (3.52) Blade (14.42) for Roof Sheathing Cross Cut Angle (SS Angle 13.73)
 
Tongue (8.00) Blade (12.00) for Miter Box Gable Mould Plumb Cut Angle (SS Angle 33.69)
Tongue (8.00) Blade (12.51) for Miter Box 2 Cord Polygon Gable Mould Hip Plumb Cut Angle (SS Angle 32.61)
Tongue (3.52) Blade (12.00) for Miter Box 2 Cord Polygon Gable Mould Hip Cross Cut Angle (SS Angle 16.36) (Saw Angle 16.36)
 
Tongue (2.35) Blade (14.42) for Frieze Block Plumb Cut Angle (SS Angle 9.25)
Tongue (3.52) Blade (14.42) for Frieze Block Cross Cut Angle (SS Angle 13.73) (Saw Angle 13.56)
 
Tongue (2.35) Blade (14.42) for Square Cut Fascia Plumb Cut Angle (SS Angle 9.25)
Tongue (3.52) Blade (14.42) for Square Cut Fascia Cross Cut Angle (SS Angle 13.73) (Saw Angle 13.56)
 
Tongue (0.46) Blade (3.52) for Hip Rafter Square Cut Fascia Plumb Cut Angle (SS Angle 2.19)
Tongue (3.52) Blade (14.42) for Hip Rafter Square Cut Fascia Cross Cut Angle (SS Angle 13.73) (Saw Bevel Angle 13.56)