Pontoon Design Final - 33x20
Pontoon Design Final - 33x20
Pontoon Design Final - 33x20
PONTOON DESIGN
Design Code: API 650
Product Stored:HSD
Size of the Tank:
Diameter (D) ,m 33
Height (H) ,m 20
Sp.Gt.of Product 0.87
Type of Roof: Pontoon type, Multiple compartment floating roof
Outer Dia of Pontoon: Dia of tank - Foam seal gap (Rim gap)
d1(m) = 33 - 0.4 (400mm) 32.6
Outer Radius of Pontoon (r1)
r1(m) = (d1/2) 16.3
Inner Dia of Pontoon: Dia of tank - Foam seal gap (Rim gap) - Width of pontoon plate
Width of Pontoon Bottom Plate (bpbp) ,m 2.25
d2(m) = 33 - 0.4 (400 mm) - (2.5 x 2) 28.1
Inner Radius of Pontoon (r2)
r2(m) = (d2/2) 14.05
Pontoon Hatches
Nick Wt.(NW) (kg) 13.32
Cover Wt.(CW) (kg) 19.34
Total (kg) 32.66
WPH (T) =(NW+CW)xC 1.3064
Deck Side
Deck mounting flat bar(Center Ring)
Width of Center Ring (wdp) ,m 0.08
WIR(T) = pi()x((d2)^2-(d2-(wdpx2))^2)xtcrx7.85 0.552812236244521
Deck Plate
WDP (T)= pi()x(d2-wdp)^2/4xtdpx7.85 29.0433728616965
Let H1 be the height at rim space from the bottom of deck plate
Пxr12xH1xsp.gr. = (Wt. Of Roof - BSR1) 0.049392374431712
H1(m) 0.049392374431712
The actual height of liquid above the deck plate
h1-tdp (m) 0.043392374431712 43.392374431712
(mm)
Normal Floatation - For Sp. Gr. 0.7
Specific Gravity of product 0.7
Buoyancy of seal ring below the deck plate
BSR2 (T)= VSRxsp.gr. Of Product 36.9423257347726
Let H1 be the height at rim space from the bottom of deck plate
Пxr12xH1xsp.gr. = (Wt. Of Roof - BSR2) 0.076742742173223
H1 (m) 0.076742742173223
The actual height of liquid above the deck plate
h1-tdp (m) 0.070742742173223 70.7427421732231
(mm)
10 inch Rainfall condition
Total volume of water
V0 (m3)= П/4xD^2*0.254 217.245844384715
From large deflection theory of plate we have maximum deflection at the center
Youngs modulus E (T/m2) 20470000
Ddef = 0.662xr3[p' x r3/(E x tdp)n
Ddef3 = 0.006495600119528 1.54145854201171 -2.40056174 Ddef
0.006635687(2.213772049-2.2576Ddef)
ENNORE TERMINAL
PONTOON DESIGN
Ddef3 = 0.010012698289738 -0.01559308915705 Ddef =---------(B)
Solving equation B (a) (b)
ENNORE TERMINAL
PONTOON DESIGN
Ddef3 = a-b
Ddef3+b-a = 0
Ddef = 5.90628284146E-05
Deflection Ddef (m) 0.192
XC (m)= 2x(r1^3-r2^3)xsin(a0)
3xax(r1^2-r2^2) 0.796860985875411
Moment of Inertia
I (m4) = rmid^3xbpbp(a+sina0cosa0-2sin2a0/a) 22208.1150805875
Depth of immersion at A
DA (m) = WEWR/A+M/SA 0.43090474892552 430.90474892552
(mm)
Depth of immersion at B
DB (m)= DAx(r1+XC)-bpbp/(r1+XC) 0.299301643428034