, , , , .
- .
. - - , . . . .
, , , . , , . . , , , , . , , . .
. 3.1 -
| 1 | 15 3 / |
| 1 | 4,5 3 / |
| 8 |
. 3.2 -
| ( +100 ) | Ҹ ( +100 ) | ||||||
| 0 | , % | . 0 | , % | ||||
| - | - | - | - | - | - | - | |
| 17 - 19 | 15 20 | 60 - 30 | 20 - 23 | 60 - 30 | 60 - 30 |
3.1.3.
. ( ). .
.
, :
F = F´a, 2
F , ,
a -
.
:
:
n = F. / F
, F , 2.
F= b h
b - (1,5; 2,0; 3,0 4,0 ).
h - ,
h = - (h + h)
|
|
|
- .
= 3,6; 4,2; 4,8 ..
h - , (h = 0,8... 1,2 )
h - , (h = 0,3... 0,5 )
0,6.
.
, .
, .
, .
() . .
:
1. () , . (. 7).
2. .
, , , . ( - 1,5; 50% 30%) 11. ( 10...20%).
3. :
4. = R ´ F, B
R , /2.
F , 2
5. .
II-4-79 . , .
: 30; 40; 65; 80
: 75; 100; 150; 200; 300; 500; 750; 1000; 1500 .
6. :
, .
, - .
7. :
W = ´Q,
, Q - , , ( 3.4)
.3.4
| , | ||
.
. . 2-4% :
F = F ´a, 2
, a - ( a= 0,020,04).
2
.
|
|
|
.
, ( , , ).
40 3 , .
, .
Q = V´ , 3/
V , 2.
, -1. .
144*2=288 3/
():
- , =23,
- = 34,
- , = 56,
- - =3,54,
- = 3...4,
- =23,
- =23,
- , =23,
- =68.
, . .
