7/25/2019 Ah Ol Stiffeners
1/19
DESIGN OF STIFFENERS FOR HOT AIR DU
TITLE : HOT AIR DUCT
SECTION PROPERTY WITH PLATE
Widt! S
% D & A' cm
AT AH DISCHARGE:
1 HAD MC)* 160 155 75 9.0 5.7 29.30 1137.47 273.67 193.32 118.29 3.06 2.03
2 HAD+ MC*,) 160 80 40 7.5 4.8 17.10 146.8 183.57 61.71 26.11 3.28 2.83
3 HAD- M&+)* 160 255 125 12.5 6.9 55.50 6243.21 505.67 559.32 435.44 3.02 2.83
4 HADS+ MC+) 160 130 65 8.2 5.3 24.70 653.69 231.77 140.74 78.24 3.06 2.15
5 HADT. M&+)* 160 255 125 12.5 6.9 55.50 6243.21 505.67 559.32 435.44 3.02 2.95
6 HADS. MC+) 160 130 65 8.2 5.3 24.70 653.7 231.77 140.74 78.24 3.06 2.15
7 HADS- MC+) 160 130 65 8.2 5.3 24.70 653.7 231.77 140.74 78.24 3.06 2.15
SlN/
Sti001M2d
R/lledSe#ti/n
%it! "late
Plate%idt!(33
de"t!/0 4n1%it!"late(33
T!2 /00lan$e(33
T!21 /0%e5(33
T/talArea %it!"l (#3+
M/3ent /0 inertia /0#/351se#ti/n (#3-
M/duli /0 se#ti/n(#3.
ryy
Ma6"/s1 "r
T0
t%
I66 COM&
IyyCOM&
766y
766y+ Kn/m
2
PLATE 5 T
SELECT DUCT
PLATE 6 T
7/25/2019 Ah Ol Stiffeners
2/19
ained
Rati/ Result Result
mm L/320
116.79 *18 PASS 2.83 PASS
116.79 *1* PASS 0.40 PASS
116.79 *1.- PASS 10.49 PASS
109.76 *1+ PASS 1.01 PASS
109.76 *1*, PASS 0.60 PASS
109.76 *1*) PASS 0.28 PASS
109.76 *1+* PASS 3.30 PASS
All15endin$stress
05
A#tualde0ln
N/mm2
7/25/2019 Ah Ol Stiffeners
3/19
DESIGN OF STIFFENERS FOR HOT
COMPRESSION ON O9TSIDE
Sl N/1 S"a#in$ S"an Inter3ediate 0a#t/r 0/r #al#ulatin$ "er3issi5le stress (a
m m Kn/m Knm m Y k2 C2 C1
AT AH DISCHARGE:
1 3.81 1.25 3.70 4.76 8.150 2.500 81.80 396.02 17.22 0.14 -0.730 9.62 5.88
2 4.61 1.25 1.25 5.76 1.125 1.250 38.15 1820.64 10.67 0.02 -1.000 5.62 2.38
3 4.61 1.75 6.65 8.07 35.677 1.250 41.41 1545.24 20.40 0.35 -0.295 14.34 11.16
4 3.40 1.60 2.30 5.44 2.878 2.300 75.08 470.05 15.85 0.09 -0.820 8.36 4.64
5 4.20 1.20 3.53 5.04 6.280 1.500 49.69 1073.09 20.40 0.35 -0.295 14.34 11.16
6 3.40 1.20 1.80 4.08 1.322 1.800 58.76 767.46 15.85 0.09 -0.820 8.36 4.64
7 3.40 1.40 3.20 4.76 4.874 3.200 104.47 242.83 15.85 0.09 -0.820 8.36 4.64
Ma6ne$1 "r
udl /n5ea3
&endin$M/3ent
E00 Len$t!L
ey
Slenderness rati/
Kn/m2 Ley=ryy D/T =C/
7/25/2019 Ah Ol Stiffeners
4/19
Rati/ Result Result
mm L/320
68.90 *1,) PASS 5.309 PASS
43.10 *1-* PASS 0.648 PASS
81.93 *1,- PASS 17.096 PASS
36.78 *1- PASS 1.593 PASS
14.42 *1- PASS 0.857 PASS
16.90 *1< PASS 0.448 PASS
62.30 *1,) PASS 5.223 PASS
A#tual1stress in5endin$ (M
77 in
(H/t
A#tualde0ln
N/mm2
7/25/2019 Ah Ol Stiffeners
5/19
SECTIONAL PROPERTIES OF SECTIONS AS PER IS 808:198
I-SECTIONS
Member Mass Dep! "# $%&! "# T!' "# T!' "# M.( M.( ) "# ) "# E.M
S*.," s%-e per mere se%"/ se%"/ $eb *a/e r/ r/
D B t T Ixx Iyy
'm mm mm mm mm m4 m4 m m m3
1 MB100 8.9 100 50 4.7 7 183.00 12.90 4.00 1.05 36.60
2 MB12 13.3 125 70 5 8 445.00 38.50 5.16 1.51 71.20
3 MB10 15 150 75 5 8 718.00 46.80 6.13 1.57 95.70
4 MB1! 19.6 175 85 5.8 9 1260.00 76.70 7.13 1.76 144.0
5 MB200 24.2 200 100 5.7 10 2120.00 137.00 8.29 2.11 212.0
6 MB20 37.3 250 125 6.9 12.5 5130.00 335.00 10.40 2.65 410.0
7 MB"00 46 300 140 7.7 13.1 8990.00 486.00 12.40 2.86 599.0
8 MC0! 7.14 75 40 4.8 7.5 78.50 12.90 2.94 1.19 20.90
9 MC100 9.56 100 50 5 7.7 192.00 26.70 3.97 1.48 33.50
10 MC12 13.1 125 65 5.3 8.2 425.00 61.10 5.05 1.91 68.10
11 MC10 16.8 150 75 5.7 9 788.00 103.00 6.08 2.20 105.0
12 MC1! 19.6 175 75 6 10.2 1240.00 122.00 7.04 2.21 141.0
13 MC200 22.3 200 75 6.2 11.4 1830.00 141.00 8.02 2.22 181.0
14 MC22 26.1 225 80 6.5 12.4 2710.00 188.00 9.02 2.37 241.0
15 MC20 30.6 250 80 7.2 14.1 3880.00 211.00 9.92 2.37 307.0
#xx
#yy
$xx
PLATE 5 THK
DUCT
PLATE 6 THK
7/25/2019 Ah Ol Stiffeners
6/19
m4 m3 m3 m3 m
183.567 93.773 43.648 22.946 3.0761
209.167 144.54 81.033 26.146 2.8925
217.467 185.01 107.97 27.183 2.8328
247.367 247.74 160.18 30.921 2.7379
307.667 332.36 230.11 38.458 2.8159
505.667 559.32 435.44 63.208 3.0185
656.667 777.51 631.37 82.083 3.14183.567 61.709 26.112 22.946 3.2764
197.367 95.107 45.957 24.671 3.1258
231.767 140.74 78.237 28.971 3.0632
273.667 193.32 118.29 34.208 3.0562
292.667 245.07 158.21 36.583 2.9826
311.667 301.26 203.03 38.958 2.9221
358.667 374.19 264.38 44.833 2.9469
381.667 457.93 338.05 47.708 2.8497
IyyC%&
$xxy1
$xxy2
$yy
#yy
7/25/2019 Ah Ol Stiffeners
7/19
(%)*+', M%).), %# C#%* L% A..%y St33., St#3,, R3)4t5%* F4t%# %# EN 10
%# ),3 % BS669 BS90 7 3.3
50 206000 50 1
100 206000 100 0.94
200 198000 150 0.88
300 191000 200 0.84
400 183000 250 0.76
500 174000 300 0.67
600 165000 350 0.64
400 0.61
T3&3#t)#3%
C
M%).), %E.,t545ty :
;E; M
T3&3#t)#3 %CR3)4t5%*
4t%# t
7/25/2019 Ah Ol Stiffeners
8/19
02-S2!
t3 t3&
7/25/2019 Ah Ol Stiffeners
9/19
'20 1
0.1 0.8
0.2 0.6
0.3 0.4
0.4 0.2
0.5 0
0.6 0.1
0.7 0.2
0.8 0.3
0.9 0.4
1 0.5
7/25/2019 Ah Ol Stiffeners
10/19
06272016Prepare&bS
)EA322304958.*s
I*t3#*t5%*. D33.%&3*t *PRO>ECT
+"&a:ar% S
E*+5*33#5*+ A,,%45t3, L5&5t3DOCNO
CALCULATION OF COMBINED SECTIONAL PROPERTIES OF I-SECTION ?ITH PLATE
SECTION PROPERTIES OF ISMB200
Dep! "#
7/25/2019 Ah Ol Stiffeners
11/19
06272016Prepare&bS
)EA322304958.*s
7/25/2019 Ah Ol Stiffeners
12/19
06272016Prepare&bS
)EA322304958.*s
;arsINITIALS
S
PAGE
(SECT(G, $(TH PLATE
7/25/2019 Ah Ol Stiffeners
13/19
06272016Prepare&bS
)EA322304958.*s
7/25/2019 Ah Ol Stiffeners
14/19
I*t3#*t5%*. D33.%&3*t *PRO>ECT
E*+5*33#5*+ A,,%45t3, L5&5t3DOCNO
T(PICAL DESIGN CALCULATION FOR DUCT STIFFENERS AS PER IS 800-1986
COMBINED SECTION PROPERTIES OF ISMC! ?ITH PLATE-= TH@
Dep! "# ";/s M"&;*;sE ,mm2 202800
A**.be/&%/ sress #b,mm2165B0.828 136.62
)es;*A;a* be/&%/ sressA**.be/&%/ sress PASS
C!e' #"r De=e%"/
3.54
A**.&e=e%"/L325 12.31
)es;*A;a* De=A**.De= PASS
("mb
1
2
*210
A;a* &e#5*4384E(
IDEA
7/25/2019 Ah Ol Stiffeners
15/19
I*t3#*t5%*. D33.%&3*t *PRO>ECT
E*+5*33#5*+ A,,%45t3, L5&5t3DOCNO
IDEA
CHEC@ FOR STIFFENER ?ITH COMPRESSION ON
OUTSIDE FLANGE UNRESTRAINED
Ma.,ea%:e press;re 3.5
Spa%/ 1.5 m
Spa/ "# s%Ie/er 4 m
;&* "/ beam 5B1.5 5.25 K/m
Je/&%/ M"me/
5.25B4210 8.4 K/m
A;a* be/&%/ sress M2
9.6B106230.11B103 36.5
Des%/ Tempera;re ?P (D@ 140
Sress re&;%"/ #a"r ?as per s!ee e/* @ 0.828
)e&.>";/s M"&;*;sE ,mm2 202800
EIe%:e *e/!Le 2 m
S*e/&er/ess ra%"Ler 71.024
I*t3#&35t3 4t%# %# 4.4).t5*+ A..,t#3,, ,3# 4. =2" % PASS
>26.5B105?Ler@2 525.33
20.5
0.25
K2"eI as per Tab*e6.4 "# (S800 0.506
C2+reaer &%sa/e #r"m !e
7/25/2019 Ah Ol Stiffeners
16/19
I*t3#*t5%*. D33.%&3*t *PRO>ECT
E*+5*33#5*+ A,,%45t3, L5&5t3DOCNO
IDEA
7/25/2019 Ah Ol Stiffeners
17/19
mm
mm
mm
mm
mm
m
m
m
m
mK/m
K/m
mm
mm
m2
m4
m3
m3
K/m2
,mm2
"C
,mm2
7/25/2019 Ah Ol Stiffeners
18/19
7/25/2019 Ah Ol Stiffeners
19/19
Top Related