암거배수관 

SDV 배수관 

원형유공관, 망상관의 표준 유효배수 단면적
cm²

암거배수관 

SDV 배수관 

원형유공관, 망상관의 표준 유효배수 단면적
cm²

직경
cm

총단면적
cm²

배수관
(本)

표준유효배수
단면적
cm²

직경
cm

총단면적
cm²

배수관
(本)

표준유효배수
단면적
cm²

2r

A=p r²

Ax0.7

0.614 r²

2r

A=p r²

Ax0.7

0.614 r²

4.0

12.57

8.80

2.46

25.5

510.71

357.50

99.81

4.5

15.90

11.13

3.11

26.0

530.93

371.65

103.77

5.0

19.63

13.74

3.84

26.5

551.55

386.09

107.80

5.5

23.76

16.63

4.64

27.0

572.56

400.79

111.90

6.0

28.27

19.79

5.53

27.5

593.96

415.77

116.08

6.5

33.18

6

23.23

6.49

28.0

615.75

431.03

120.34

7.0

38.48

26.94

7.52

28.5

637.94

446.56

124.68

7.5

44.18

8

30.93

8.63

29.0

660.52

462.36

129.09

8.0

50.27

35.19

9.82

29.5

683.94

478.44

133.58

8.5

56.75

39.73

11.09

30.0

706.86

142

494.80

138.80

9.0

63.62

44.53

12.43

30.5

730.62

511.43

142.79

9.5

70.88

49.62

13.85

31.0

754.77

528.34

147.51

10.0

78.54

54.98

15.35

31.5

779.31

545.52

152.31

10.5

89.59

13

60.61

16.92

32.0

804.25

562.98

157.18

11.0

95.03

66.52

18.57

32.5

829.58

580.71

162.13

11.5

103.87

72.71

20.30

33.0

855.30

598.71

167.16

12.0

113.10

79.17

22.10

33.5

881.41

616.99

172.27

12.5

122.72

85.90

23.98

34.0

907.92

635.54

177.45

13.0

132.73

25

92.91

25.94

34.5

934.82

654.37

182.70

13.5

143.13

100.20

27.98

35.0

962.11

673.48

188.04

14.0

153.94

107.76

30.09

35.5

989.80

692.86

193.45

14.5

165.13

115.59

32.27

36.0

1017.88

712.52

198.94

15.0

176.71

35

123.70

34.54

36.5

1046.35

732.45

204.50

15.5

188.69

132.08

36.88

37.0

1075.21

752.65

210.14

16.0

201.06

140.74

39.30

37.5

1104.47

773.13

215.86

16.5

213.82

149.67

41.79

38.0

1134.11

793.88

221.65

17.0

226.98

158.89

44.36

38.5

1164.16

814.91

227.53

17.5

240.53

168.37

47.01

39.0

1194.59

836.21

233.53

18,0

254.47

178.13

49.73

39.5

1225.42

857.79

239.50

18.5

268.80

188.16

52.54

40.0

1256.64

252

879.65

245.60

19.0

283.53

198.47

55.41

41.0

1320.25

924.18

258.03

19.5

298.65

209.06

58.37

42.0

1385.44

969.81

270.77

20.0

314.16

58

219.91

61.40

43.0

1452.20

1016.54

283.82

20.5

330.06

231.04

64.51

44.0

1520.53

1064.37

297.18

21.0

346.36

242.45

67.69

45.0

1590.43

1113.30

310.84

21.5

363.05

254.14

70.96

46.0

1661.90

1163.33

324.81

22.0

380.13

266.09

74.29

47.0

1734.94

1214.46

339.08

22.5

397.61

278.33

77.71

48.0

1809.56

1266.69

353.66

23.0

415.48

290.84

81.20

49.0

1885.74

1320.02

368.55

23.5

433.74

303.62

84.77

50.0

1963.50

1374.45

383.75

24.0

452.39

316.67

88.42

75.7

(40Ø)

879.63

24.5

471.44

330.01

92.14

85.2

(45Ø)

1114.26

25.0

490.87

97

343.61

195.94

94.6

(50Ø)

1373.70