.
:
: 1 = 123,4 ͷ, 2 = 373,27 ͷ;
:
d1 = 75 d2 = 273 .
:
W = = = 156 ( ).
b2 = ψ× W, ψ .
ψ = 0,40,5.
ψ = 0,5.
b2 = ψ× W = 0,5 × 156 = 78 .
24 , :
b1 = b2 + (24) =78 + 3 = 81 .
:
dX , - = 1520
- , .
dX = 31,36 .
, 58%:
dX = 31,36 × 1,05 = 32,93 .
dX = 34 .
.
d = 37 .
d = 40 .
d = 45 .
d = 50 .
d = 40 , , - 208.
:
d = 40 ,
D = 80 ,
= 18 ,
r = 32,0 .
.
l = (1,2 2,6)×d. . ,
l = 1,2×d = 1,2×34 = 40,8 .
:
l = l = = 18 .
. 812 .
= 810 .
,
= 0,5× l + l + 0,5× = 0,5×40,8 + 18 + 0,5×18 = 47,4 .
0,5× l = 0,5 × + l + + 0,5×b1 = 0,5×18 + 10 + 10 + 0,5×81 = 69,5 .
: l = 2×69,5 = 140 .
, , Z, X, Y .
:
Fn = 2,05 , α = -90,
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Ft1 = 3,16 , Fr1 = 1,15 .