-
8/12/2019 Storage Tank Design Updated1
1/16
BGBatallerDecember 8, 2009
2ndSemester, AY 2009-2010Seminar Room, ChE Dept, CEAT-UPLB
-
8/12/2019 Storage Tank Design Updated1
2/16
CLASSIFICATION
Shop-fabricated Vcap23,700 gal
Field erected Vcap> 23,700 gal
-
8/12/2019 Storage Tank Design Updated1
3/16
-
8/12/2019 Storage Tank Design Updated1
4/16
-
8/12/2019 Storage Tank Design Updated1
5/16
1. Vessels below500 gallons (1:9 m3) are
never more than 85% filled
2. Vessels above500 gal(1.9 m3) are nevermore than 90%
filled
3. Liquid in quantities less than 1,000 gal(3.8m3) is stored in
vertical tanks mounted onlegs
-
8/12/2019 Storage Tank Design Updated1
6/16
-
8/12/2019 Storage Tank Design Updated1
7/16
Shell Thickness (One Foot Method)
>> Applicable only for the Lower Course Shell
Thickness
-
8/12/2019 Storage Tank Design Updated1
8/16
Shell Thickness (One Foot Method)
>> Applicable only for the Upper Course Shell
Thickness
CS
GH
D
t
L
u
12
6.2
-
8/12/2019 Storage Tank Design Updated1
9/16
Shell Thickness (Variable Point Method)LOWER COURSE
THICKNESS
CAS
HDG
S
HG
H
DtL
6.2463.006.1
-
8/12/2019 Storage Tank Design Updated1
10/16
Shell Thickness (Variable Point Method)UPPER COURSE
THICKNESS
L
a
L
aLa
L
U
rt
hywhere
y
yt
rt
httt
.yt
t
1
2
1
22
625.2375.1if
625.2if
25.11.2
3751if
-
8/12/2019 Storage Tank Design Updated1
11/16
Where:
CS
Gx
HD
tL
a
12
6.2
2
-
8/12/2019 Storage Tank Design Updated1
12/16
Where xis a variable design point that is a
function of:
a. Thickness of layers
b. Tank Radius
c. Liquid Height
>> is the minimum value among x1, x2, x3
-
8/12/2019 Storage Tank Design Updated1
13/16
U
L
U
u
uU
t
tK
KK
KKC
where
rtx
Chx
Chrtx
1
1
:
22.1
32.061.0
3
2
1
-
8/12/2019 Storage Tank Design Updated1
14/16
For Self-Supporting Roofs (FS=4)
-
8/12/2019 Storage Tank Design Updated1
15/16
For Long Cylindrical Shell (E=30x106,FS=1.5,Poissons ratio =
0.3)
-
8/12/2019 Storage Tank Design Updated1
16/16
For FS=2and tb=0.25 to 0.75 in.
