, () 130 ..
() 50 .. .
(w) 490 / .
1 - () /.
( .) | ||
, | ||
2,5 |
(W) :
W = w * ( ),
W = 490 * 365 = 178850 3/.
:
= Σ(i * i * W),
i - /.
2 -
i | i | W | |||
./. | ./3 | ../ | 3/ | ./ | |
0,8*10-3 | 0,05 | 178850 | 7,16 | ||
(.) | 0,14*10-3 | 0,33 | 8,27 | ||
, | 0,023*10-3 | 823,4 | |||
0,023*10-3 | 411,7 | ||||
1 = Σ i | 1250,53 | ||||
0,08*10-3 | 0,05 | 0,72 | |||
( .) | 0,015*10-3 | 0,33 | 0,89 | ||
, | 0,025*10-3 | 89,5 | |||
2,5 | 0,0025*10-3 | 44,75 | |||
2 = Σ i | 135,86 |
(1) (2) :
= j*σ*
1 = 400 * 0,34 * 1250,53 = 170072,08 ./
2 = 400 *0,34 *135,86 = 18476,96 ./.
= ; = 0.
.
3
, | |||
1 = j*σ*1 | ./. | 170072,08 | |
2 = j*σ*2 | ./. | 18476,96 | |
= 1 2 | ./. | 151595,12 | |
= + | ./. | 151595,12 | |
./. | |||
./. | |||
= + 0,12 | ./. | ||
R = | ./. | 85995,12 | |
= ( )/ | -1 | 0,78 |
|
|
>0, . , 7 .
( .) , 0,125 -1.
= 0,78 -1 , . = 0,125 -1.
1/:
. = 1/0,78=1,3
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