.


:




:

































 

 

 

 


3. -




3.1 .

. 6.1.

:

2 = 954,2 ∙;

d = 85,5;

2 = 71 ;

() 45.

2 = 954,2 ∙ (. 6.2).

49[. 10] d = 85,5 : = 25 , h = 14 ,

t1 = 9 , t2 = 5,4 , ℓ = 2 (58) = 71 - (58) = (6663) .

( 49 [.10] ℓ = 63 .

= ℓ - = 63 25 = 38 .

 

3.3

σ = ],

σ = /2,

] = (110190) /2 .

,

σ = 117,5 /2 < [σ] = 110190 /2 ( );

τ = ],

τ = /2,

[ τ ] = (4070) /2 .

,

τ = 23,5 /2 < [ τ ] = (4070) /2.


7

, .

. : .


, , , . - () (. 7.1).

. 7.1. -

:

1 , ͷ;

ω1 , -1;

n1 , /.;

d , .

= ·,

. =1,52,0 ( 48 [.10]).

:

≤ [],

[] ( 47 [.10].

:

σ = ,

z - ;

, ͷ;

d , ;

, ;

[σ] = 2/2 .





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