36 Sided Polygon Rafter Table ( 36 - gon )


central angle = 10
working angle = 5
plan angle = 85
miter angle = 1.05 & 12 (5.00)
hip run per foot = 12.05
apothem multiplier = 1.00382
side wall multiplier = 0.17498

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

5

5.00

0.00

0.00

0.00

12.05

5

145.70

191.42

282.86

137.16

182.88

274.32

11.43005

1

4.76

4.75

0.42

4.98

4.98

0.41

0.01

0.01

12.09

4.98

146.21

192.08

283.84

137.64

183.51

275.27

11.46967

2

9.46

9.43

0.82

4.93

4.93

0.82

0.01

0.03

12.21

4.93

147.71

194.06

286.76

139.05

185.40

278.11

11.58772

3

14.04

13.98

1.22

4.85

4.85

1.21

0.02

0.04

12.41

4.85

150.18

197.31

291.57

141.38

188.51

282.76

11.78183

4

18.43

18.37

1.58

4.74

4.75

1.58

0.02

0.05

12.69

4.74

153.58

201.78

298.16

144.58

192.77

289.16

12.04833

5

22.62

22.54

1.93

4.61

4.62

1.92

0.03

0.06

13.04

4.62

157.84

207.37

306.43

148.59

198.12

297.18

12.38256

6

26.57

26.48

2.24

4.47

4.48

2.23

0.03

0.08

13.46

4.47

162.90

214.01

316.25

153.35

204.47

306.70

12.77919

7

30.26

30.16

2.52

4.32

4.33

2.52

0.04

0.09

13.93

4.32

168.68

221.61

327.47

158.79

211.72

317.58

13.23261

8

33.69

33.59

2.78

4.16

4.17

2.77

0.04

0.10

14.46

4.16

175.11

230.06

339.96

164.85

219.80

329.69

13.73721

9

36.87

36.77

3.00

4.00

4.01

3.00

0.05

0.11

15.04

4.00

182.13

239.28

353.58

171.45

228.60

342.90

14.28757

10

39.81

39.70

3.21

3.84

3.85

3.20

0.05

0.13

15.66

3.85

189.66

249.17

368.20

178.54

238.06

357.09

14.87859

11

42.51

42.40

3.38

3.68

3.70

3.38

0.06

0.14

16.31

3.69

197.65

259.68

383.72

186.07

248.09

372.14

15.50565

12

45.00

44.89

3.54

3.53

3.55

3.53

0.07

0.15

17.00

3.54

206.05

270.71

400.03

193.97

258.63

387.95

16.16453

13

47.29

47.18

3.68

3.39

3.40

3.67

0.07

0.17

17.72

3.40

214.81

282.21

417.03

202.22

269.62

404.44

16.85152

14

49.40

49.29

3.80

3.25

3.27

3.79

0.08

0.18

18.47

3.26

223.88

294.14

434.64

210.76

281.01

421.52

17.56331

15

51.34

51.23

3.91

3.12

3.14

3.90

0.08

0.19

19.24

3.13

233.23

306.42

452.80

219.56

292.75

439.13

18.29701

16

53.13

53.03

4.00

3.00

3.01

4.00

0.09

0.20

20.03

3.00

242.83

319.03

471.44

228.60

304.80

457.20

19.05009

17

54.78

54.68

4.09

2.88

2.90

4.08

0.09

0.22

20.84

2.89

252.65

331.93

490.50

237.84

317.13

475.69

19.82033

18

56.31

56.21

4.16

2.77

2.79

4.16

0.10

0.23

21.66

2.78

262.67

345.09

509.94

247.27

329.69

494.54

20.60582

19

57.72

57.63

4.23

2.67

2.68

4.23

0.10

0.24

22.50

2.67

272.85

358.47

529.71

256.86

342.48

513.72

21.40487

20

59.04

58.94

4.29

2.57

2.58

4.29

0.11

0.25

23.35

2.58

283.19

372.05

549.78

266.59

355.46

533.18

22.21603

21

60.26

60.16

4.34

2.48

2.49

4.34

0.11

0.27

24.21

2.49

293.67

385.82

570.12

276.46

368.61

552.91

23.03801

22

61.39

61.30

4.39

2.39

2.41

4.39

0.12

0.28

25.08

2.40

304.27

399.75

590.71

286.44

381.92

572.87

23.86969

23

62.45

62.36

4.44

2.31

2.32

4.43

0.13

0.29

25.96

2.32

314.98

413.82

611.50

296.52

395.36

593.04

24.71010

24

63.43

63.35

4.47

2.23

2.25

4.47

0.13

0.31

26.85

2.24

325.80

428.03

632.50

306.70

408.93

613.40

25.55837


Framing Square usage Example: 8:12 Pitch
(Rafter Length Per Ft = 14.42) (Hip Rafter Length Per Ft = 14.46)
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 (12.05) for Hip Rafter Plumb Cut Angle (SS Angle 33.59)
Tongue (12.05) Blade (8.00) for Hip Rafter Level Cut Angle (SS Angle 56.41)
 
Tongue (1.05) Blade (14.46) for Hip Side Cut Angle (SS Angle 4.17) (Saw Angle 85.00)
Tongue (0.70) Blade (14.46) for Hip Backing Angle (SS Angle 2.77)
 
Tongue (1.05) Blade (14.42) for Jack Rafter Side Cut Angle (SS Angle 4.16) (Saw Angle 85.00)
 
Tongue (0.70) Blade (14.42) for Purlin Rafter Plumb Cut Angle (SS Angle 2.78) (Saw Angle 2.77)
Tongue (1.05) Blade (14.42) for Purlin Rafter Cross Cut Angle (SS Angle 4.16)
 
Tongue (0.70) Blade (14.42) for Roof Sheathing Plumb Cut Angle (SS Angle 2.78) (Saw Angle 2.77)
Tongue (1.05) Blade (14.42) for Roof Sheathing Cross Cut Angle (SS Angle 4.16)
 
Tongue (8.00) Blade (12.00) for Miter Box Gable Mould Plumb Cut Angle (SS Angle 33.69)
Tongue (8.00) Blade (12.05) for Miter Box 2 Cord Polygon Gable Mould Hip Plumb Cut Angle (SS Angle 33.59)
Tongue (1.05) Blade (12.00) for Miter Box 2 Cord Polygon Gable Mould Hip Cross Cut Angle (SS Angle 5.00) (Saw Angle 5.00)
 
Tongue (0.70) Blade (14.42) for Frieze Block Plumb Cut Angle (SS Angle 2.78)
Tongue (1.05) Blade (14.42) for Frieze Block Cross Cut Angle (SS Angle 4.16) (Saw Angle 4.16)
 
Tongue (0.70) Blade (14.42) for Square Cut Fascia Plumb Cut Angle (SS Angle 2.78)
Tongue (1.05) Blade (14.42) for Square Cut Fascia Cross Cut Angle (SS Angle 4.16) (Saw Angle 4.16)
 
Tongue (0.04) Blade (1.05) for Hip Rafter Square Cut Fascia Plumb Cut Angle (SS Angle 0.20)
Tongue (1.05) Blade (14.42) for Hip Rafter Square Cut Fascia Cross Cut Angle (SS Angle 4.16) (Saw Bevel Angle 4.16)