Cover Image
close this book Water purification, distribution and sewage disposal for Peace Corps volunteers
View the document Contents
View the document Preface
Open this folder and view contents Section 1: Water supply sources
Open this folder and view contents Section 2: Water treatment
Open this folder and view contents Section 3: Planning the distribution system
Open this folder and view contents Section 4: Characteristics of an adequate system
Open this folder and view contents Section 5: Construction techniques
Open this folder and view contents Section 6: Operation and maintenance
Open this folder and view contents Section 7: Scope of disposal system projects in host communities
Open this folder and view contents Section 8: The privy method of excreta disposal design for a village
Open this folder and view contents Section 9: Water carried sewage systems construction and maintenance
View the document Appendix A
View the document Appendix B
View the document Bibliography

Appendix B

This foldout chart is useful for quick conversion from meters and centimeters to feet and inches or vice-versa. For distances greater than three meters, or more accurate results, the tables or conversions equations must be used.

The chart (page ) has metric division of one centimeter to three refers, and English graduations in inches and feet to ten feet. It is accurate to about plus or minus one centimeter. Folding out the chart makes a handy reference when studying other drawings in the Handbook.

For more accurate results the tables belowl

An example may help explain how to use tints type of table. Suppose you wish to find how many inches are equal to 66 cm. On the cm. to in. table look down the leftmost column to 60 cm., and then right to the column headed 6 cm. This gives the result, 25.984 inches.

INCHES INTO CENTIMETERS

(1 in. = 2.539977 cm)

inches

0

1

2

3

4

5

6

7

8

9

0

cm

2.54

5.08

7.62

10.16

12.70

15.24

17.18

20.32

22.86

10

25.40

27.94

30.48

33.02

35.56

38.10

40.64

43.18

45.72

48.26

20

50.80

53.34

55.88

58.42

60.96

63.50

66.04

68.58

71.12

73.66

30

76.20

78.74

81.28

83.82

86.36

88.90

91.44

93.98

96.52

99.06

40

101.80

104.14

106.68

109.22

111.76

114.30

116.84

119.38

121.92

124.46

50

127.00

129.54

132.08

134.62

137.16

139.70

142.24

144.78

147.32

149.86

60

152.40

154.94

157.48

160.02

162.56

165.10

167.64

170.18

172.72

175.26

70

177.80

180.34

182.88

185.42

187.96

190.50

193.04

195.58

198.12

200.66

80

203.20

204.74

208.28

210.82

213.36

215.90

218.44

220.98

223.52

226.06

90

228.60

231.14

233.68

236.22

238.76

241.30

243.84

246.38

248.92

251.46

CENTIMETERS INTO INCHES

(1 cm. = 0.3937 in.)

cm

0

1

2

3

4

5

6

7

8

9

0

inches

0.394

0.787

1.181

1.575

1.969

2.362

2.756

3.150

3.543

10

3.937

4.331

4.724

5.118

5.512

5.906

6.299

6.693

7.087

7.480

20

7.874

8.268

8.661

9.055

9.449

9.843

10.236

10.630

11.024

11.417

30

11.811

12.205

12.598

12.992

13.386

13.780

14.173

14.567

14.961

15.354

40

15.748

16.142

16.535

16.929

17.323

17.717

18.110

18.504

18.898

19.291

50

19.685

20.079

20.472

20.866

21.260

21.654

22.047

22.441

22.835

23.228

60

23.622

24.016

24.409

24.803

25.197

25.591

25.984

26.378

26.772

27.165

70

27.559

27.953

28.346

28.740

29.134

29.528

29.921

30.315

30.709

31.102

80

31.496

31.890

32.283

32.677

33.071

33.465

33.858

34.252

34.646

35.039

90

35.433

35.827

36.220

36.614

37.088

37.402

37.795

38.189

38.583

38.976

 

EQUATIONS

1 inche

= 2.54 cm.

1 foot

= 30.48 cm.

 

= 0.3048 m.

1 yard

= 91 .44 cm.

 

= 0.9144 m.

1 mile

= 1.6. km.

1 cm.

= 0.3937 in.

1 m.

= 39.37 in.

 

= 3.28 ft.

1 km.

= 0.62137 mile

 


Meters and centimeters