. 3.2 .
(.3.2). , :
+ = - (h + h)
: h , ;
h , , ;
.
, ( ), :
Δ , Δ = 5 ;
;
;
, =10 , :
D , D =53 ;
D , D =2 ;
D , D=9;
h ; h =70 ;
D , D =30 ;
R =15 R =20 , :
, ;
l , l =0,125 /.
=0,59170,125=57,3 ;
= =0,5557,3=31,52 .
, .18-100: =0,55¸0,6.
h = 5+57,3+31,52+10+15+30=148,82
h = 70+53+2+9+20+30=184 .
;
, =2,5; =930 .
+=930-(148,82+184)=597
:
=426,5 ; =170,5 .
:
=400 ; =160 .