*
.
g . = 0.079 K/²
g = 2.04 K/²
q = (2.04+0.079*1.1)*6=12,7614 K/²
:
h = l/10=12/10=1.2
h = h */2=1,2-1/12*12/2=0,7
. 
=1,5
b =16
h. =15 :
3,75
X =l(
= h´ /*
h´ =h 
h.
(0,7-0,15)*12/1*12=0,55
X = 12(√0.55*(1+0,55) ` 0,55)=4.48
h = h + * =0,7+ 
*4.48= 1,073
=g × (-)/2
= 
=214,963 /
W.. =/R = 
=25590 ²
R - 8,4 -
I.. = W.* h /2= 
=1372903,5 ⁴
I=( I.- I .)* /
=9*10000
=100000
I = 
I= 308844
I =bh³/12
I =(1372903,5-308844)* 
=957653,55 ⁴
* 14
I. = 16* 
=1031314.8 ⁴
1031314,8> 957653,55
I.>I
W.. = (I.+ I* /)*2/ h
W. = 
= 24404³
()
=/W.= 
=8,8
8,8<10
= 
*/= 8,8*90000/100000=7,92
7,92< 8,4
̳ .
,
b =0,8
a =0,4
=0,8=80
=/0,29*=80/0,29*12=23
=1-0,8(
/100) ²=1-0,8*(23/100) ²=0,958
, 0.958
= 
/ 
= 8,8/0,958=9,1
9,1<14 (Rc.)
³ =40
h =h+i*a/2-2h
h =70+1/12 *40/2- 2*15=70+40/24-30=41,6
h
hc/ 
= 41,6/1,5=27,73 <80
|
|
|
Q max = 
= 12,7614*12/2=76,568
S =2 *h 
/ 8= 2*1,5*70 
/8=1837,5 ³
*
S= bn*hn(hon*hn/2) =16*15(70-15)/2=6600
C ,
S. = S+ S*/=1837,5+6600*100000/90000=9170,83 ³
I= 2 *h / 12= 2*1,5*70³/12=85750
*
I= bn(hon³-(hon-2hn) ³)/12=16*(70³-(70-2*15) ³) / 12=372000 ⁴
I.= I + I* /=85750+372000*10/9=499083
max = 
= 4,69
max 4,69 <6
= 0, , 
=45ᵒ
..45= 
max = 4,69 ,
*
=Q max* S*/ ( * I.*2hn)= 
=0,375
f0= 
=0,942
I.
I. = 
+ 
* / = 
+ 
*100000/90000 = 432000+1332000*1,1=1912000
K-,
= 0,4+0,6 *h´on/h´cep =0,4+0,6*55/105=0,714
C-., .
=( 45,3-6,9*hon/hcep)* 
=(45,3-6,9*70/120)*1,33=54,9
=F/F=1,33
f0-
f = f0 / *(1+(h/1500)²)=0,942/0,714*(1+54,9(120/1500)²)=1,78
f / l= <1/300
1,78/1200=0,001483
0,00148 <0,00333
!!
