( )
3.82 (3.37).
(168)
b, h ¾ .
Rb 30 30.
3.83. , , (1- , . 52).
, , , (2- , . 53).
. 52.
. 53.
3.84. 1-
(169)
RsAs 1 qsw 1 ¾
(169):
1 ¾ , ; 1 2 h + b ;
As 1 ¾ , b;
qsw 1 ¾ , b , :
(170)
Asw 1 ¾ ;
s 1 ¾ ;
(171)
, (. 54, ).
1
(172)
¾ , b.
1 < 2 ¢, (169) 1 = 2 ¢. 1 > xRh 0 ( xR ¾ . . 3.14), . 3.15.
(169) , As 1 Asw 1 , ; .
. , RsAs 1 (169), (172), .