Upload
solquiha
View
17
Download
3
Embed Size (px)
DESCRIPTION
curb
Citation preview
WELDED STEEL TANKS FOR OIL STORAGE F-3
Figure F-2—Permissible Details of Compression Rings
2tc max
ta Le
Le Le
Le
wc min
Alternative(inside or outside)
Alternative
Rctc
RcRc
tctc
ta
ta
R2
qth
Detail a
wc
ta
LeLe
Le
ta ta
Detail b
Awh
B<A B<A
B
2tc max
AB
wh
Neutral axisof angle
Neutral axisof angle wc
Detail c
Detail h Detail i Detail k
wh
2tc max
tbwc
ta = thickness of angle legtb = thickness of bartc = thickness of shell plateth = thickness of roof platets = thickness of thickened plate in shellwc = maximum width of participating shell = 0.6 (Rc t)0.5, where t = tc or ts as applicable.
wh = maximum width of participating roof = 0.3(R2 th)0.5 or 300 mm (12 in.) whichever is less.Rc = inside radius of tank shellR2 = length of the normal to the roof, measured from the vertical centerline of the tank = Rc / (sin )
tcRc
tcRc
Rc
th
0.6(R2tb)0.5
wc
tb
or a maximum
of 0.9(Rctb)0.5
0.6(Rcts)0.5
tb
th
0.5
wh
tc
2ts or 2tb max
2tc max
wc min
wh
wc
tc
Detail f
ts
wc
wh
AB
B<AB<A
tc
Rc
Rc
Rc
Rc
Neutralaxis ofangle
Neutralaxis ofangle
wc min
wh
Detail d
wc
AB
tc
ta
tawc min
wh
Detail e
wc
wh
2tc max2tc max
16tamax
wc
wc min
tc
Detail g
Le
Le
max
max max max
Le max
Notes:1. All dimensions and thicknesses are in mm (in.).2. Dimension B in details b, c, d, and e is: 0 � B � A.3. The unstiffened length of the angle or bar, Le, shall be limited to 250/(Fy)1/2 mm [3000/(Fy)1/2 in.] multiplied times ta for details athrough g or times tb for details h through k, where Fy is the minimum specified yield strength, MPa (lbf/in.2).
08
Copyright American Petroleum Institute Provided by IHS under license with API Licensee=Larsen and Tourbo - Faridabad/5954522004
Not for Resale, 12/09/2009 02:07:35 MSTNo reproduction or networking permitted without license from IHS
--`,`,,``,,```,```,,,``,`,`,`,`-`-`,,`,,`,`,,`---