1. -
1.1 .
. 6.1.
:
2 = 114,6 ∙;
d = 47,5;
2 = 36 ;
() 40.
1.2
2 = 114,6 ∙ . h , t1 t2 d 49 [. 10].
49 [4] d = 47,5 : = 14 , h = 9 , t1 = 5,5 , t2 = 3,8 , ℓ = 2 (58) = 36 - (58) = (3128) . ( 49 [. 10]) ℓ = 30 . ℓ = ℓ - = 30 14 = 16 .
1.3
σ = 
[σ],
σ = 
/2,
[σ ] = (110190) /2 .
,
σ = 86,2 /2 < [σ] = 110190 /2 ( );
τ = 
[τ ],
τ = 
/2,
[ τ ] = (4070) /2 .
,
τ = 21,5 /2 < [ τ ] = (4070) /2.
2. -
2.1 .
. 6.1.
:
d = 47,5 ;
2 = 95,5 ∙.
() 40X, - 269302 .
2.2.
2 = 95,5 ∙ (. 6.2).
b h , t1 t2 dK = 47,5 49[4]: b=14 , h = 9 , t1 = 5,5 , t2 = 3,8 .
L 5...10 :
ℓ = ℓ (510) = 57 7 = 50 .
( 49[. 10]) ℓ = 50 .
ℓ = ℓ - b = 50-14 = 36 .
:
:
σ = 
,
σ = 
/2,
[σ] = 110 ÷ 190 /2.
|
|
|
,
σ = 32 /2 < [σ] = 150 /2 ( );
:
τ = 
τ = 
/2,
[τ] = (4070) /2 - .
,
τ = 8 /2 < [τ] = (4070) /2.
