2056678967453421

2040404141434456

78909102100404042

4456664540404056

7677878840404123

100 02 = 16 6

XXsFFxsFa

2-18101101

19-352761627

36-52441879235

53-6961742732

70-8678215634

87-1031906114040

2,687

40nX = Fxs X = 2687 = 67.17

fMo = L+ (n/2 = fa) i

N/2 = 1fa = 6f = 18 i = 16 L = 18.5

18Ma = 18.5 (1-6) 16

18Md = 18.5 (1-6)16

Md = 18.5 4.44

Md = 14.06 //

1 2Mo = L+ (1) i

1 = 18-7=112 = 18-6 =12L= 18.5

11+12Mo = 18.5 (11) 16

23Mo = 18.5 (11)16

Mo = 18.5+7.65

Mo = 26.15 //