. (. 2.7).
:
(2.13)
:
(2.14)
(2.15)
.
2 (2.16)
[7] 1 6 AIII As = 28,32 (. 2.8).
(2.17)
2.4.
. : .
. 2.8.
: ;
:
g = (g + g) = (410+282+3000)1,3=4800 /, (2.18)
g 3000 /.
/ (2.19)
:
(2.20)
:
(2.21)
. , bf =12hf + b = 12 0.05 + 0.17 = 0.77 .
: .
\1,4\
, (2.23)
, (2.24)
, (2.25)
. (2.22)
. 2.8.
, , . 2 (2.26)
)
)
. 2.9.
) ; )
[7] 2 25 AIII 2 18 -(As = 14,912).
, . [7]:
j3 = 0,6. jn = 0. jf _ 0,5;
; jf =0,5; (2.27)
̳ :
/; (2.28)
S
h = 300 < 450: ; .
S = 150.
_6 12 I; Rsw = 175'106/2; E = 210000.
():
2=68,82 (2.29)
[7] 2_8 I, Asw = 101 2.
3.1 ί ˲ί
, .
.
, , . , , .
|
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, , .
, [ 4 ].
, 2, 3.1.
˲
1. ., .. . : . .- , , 1991.-767 .
2. : ϳ/ .. .; . ... .: , 1995. 591 .
3. . \ . .. , , 1985. -496 .
4. 2.03.01-84. .-.: , 2000.- 78 .
5. 2.01.-07-85. .-.: , 1987.-36.
6. 1 ' \ . ...-:ղ, 1992.-8.
7. 1,2 ' / . .. :ղ, 1992. 44.
̲
. 3
1. ................3
1.
...............4
1.1.
................4
1.1. 2
................6
1.1.
腅.................6
1.1.
腅................8
1.1.
腅...............10
1. ................13
.............15
...............16