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623107, , ., ., . -.

D - ,
T - ,
A - , 2
Au - , 2
Ix, Iy - , 4
Wx, Wy - , 3
ix, iy - ,
M - 1 , .

( MS Excel) :
D = 89 .. 127, T = 3.0 .. 4.0 :
c_tubes_01.xls
D = 127 .. 245, T = 4.5 .. 9.0 :
c_tubes_02.xls
D = 245 .. 426, T = 10.0 .. 12.0 :
c_tubes_03.xls
 

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