II-22-81(1995)
Administrator   
05.08.2008 .
  

4.30. (. 10)

N £ mg jRsk A,                                              (26)

N - ;

 Rsk £ 2R - ,

Rsk = R +  II-22-81    ,                                         (27)

2,5 (25 c/2),

Rsk1 = R1 +  II-22-81    .                                              (28)

2,5 (25 /2)  II-22-81    1;

 II-22-81

. 10. ()

1 - ; 2 -

R1 - ;

R25 - 25;

m =  II-22-81     - , st s

m =  II-22-81

 g - , (16);

 Vs Vk - ;

 j - , . 18 lh li, ask, (4).

: 1.

m = 50  II-22-81    %.

2. 50 150 .

4.31. , ( 0 £ 0,17 h),

N £ mg j1 Rskb Ac w,                                                     (29)

N £ mg j1 Rskb A (1-  II-22-81    ) w,                                       (30)

Rsk £ 2R - , 50

Rskb = R +  II-22-81    ,                                         (31)

25 ( )

Rskb = R1 +  II-22-81     II-22-81    .                              (32)

, . 4.1. 4.7.

. 1. , ( 0 >0,17h), lh >15 li >53 .

2.

m =  II-22-81    %

 


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