Spreadsheet for sizing rectangular tanksFull description
Spreadsheet for sizing rectangular tanks
Spreadsheet for sizing rectangular tanksDeskripsi lengkap
rectangular tank design on primary informationDescripción completa
Tank Sizing
Full description
Full description
Rectangular Tank Design
basic teory for re tank designDescripción completa
Design as per roarks formulaDescripción completa
Descripción completa
Descripción completa
تصميم خزان أرضيFull description
Descripción completa
Full description
Rectangular Tank Engineering Practice
Rectangular Tank DesignFull description
basic teory for re tank design
Rectangular Tank Sizing
Rectangular tank sizing Calculation Objectives - To calculate the thickness of tank plates - To determine the size of stiffening frame for tank - To determine dry and test weights
Assumptions -
Specific gravity of liquid is 1 Acceleration due to gravity is 9.81 m/s2 Density of steel is 7850 kg/m3 Minimum Distance between stiffeners = 1.05m
References 1. UL-142, Steel Aboveground Tanks for flammable and combustible liquids, Underwriters Laboratories Inc. 2 Eugene F. Megyesy, Pressure Vessels Handbook, Pressure Vessels Publishing Inc. 3 Corus Construction and IndustrialStructural Sections to BS 4: Part 1:1993 & BS EN 10056:1999 4 ASME Boiler and Pressure Vessel Code Section II subpart D 5 Trauvay and Cauvin (2001), Piping Equipment 6 Young, W. C. & Budynas, R. G. (2002) Roark's Formulas for Stress and Strain 7th ed., McGraw-Hill. 2002 7 ASME B31.10M - 2000: Welded and Seamless Wrought Steel Pipe 8 ASME B.16.5 - 2009: Pipe Flanges and Flanged Fittings
Notes
1 A total of 10 Stiffeners were used based on a spacing of 1.05 m on the long sides (3 stiffeners on each longer side; and 2 stiffeners on each shorter side) 2 Sump Pump weight was not included in calculations 3 Weights are calculated weights. Final weights to be advised by vendor Weight calulation does not include weir.
Page 1 of 8
Definition of Terms
-a
Length of top plate
-b
Width of top plate
- CA
Corossion Allowance
-E
Modulus of Elasticity
-g
Gravitational acceleration
-H
Height of tank
- Imin
Minimum Moment of inertia of top edge stiffening
-L
Length of tank
- l
Spacing between vertical stiffeners
- lb
Spacing of bottom plate support
-R
Reaction at top edge
-r
Radius of contact of heaviest dead weight on top tank
-S
Allowable stress of tank material
-t
Required thickness
- ta
Selected thickness
-w
Load
-W
Heaviest Dead weight on top plate
- Zmin
Minimum Section Modulus of vertical stiffener
-α
Factor Depending on ratio of Length to Width of top plate a/b
-β
Factor Depending on ratio of Height to Length H/L
ρp
Density of tank material
ρ
Density of liquid in tank
ν
Poisson ratio of tank material
CSA
Cross-Sectional Area
Page 2 of 8
Equipment Tag No. 1
ABH 8000
Project No.
1216
DESIGN DATA Tank Material Modulus of Elasticity Allowable Stress Density of tank material Tank Dimensions: Length Width Height Type of Liquid Specific Gravity Density of liquid Acceleration due to gravity No. of vertical stiffeners one side Maximum Distance between Stiffners Corrosion Allowance Height/length ratio (H/L) Factor for H/L
VERTICAL STIFFENING Minimum Section Modulus Z min
An equal angle L-section of dimensions 150 x 150 x 15 (section modulus = frame is satisfactory for vertical stiffening
83.5
cm3)
Total no. of vertical stiffeners
=
10
Page 3 of 8
(Note 1)
1
5
TOP EDGE STIFFENING Reaction at top edge
R 0.3w
=
8.48
N/mm
Minimum required moment of inertia for top edge stiffening:
I min
RL 4 192 Et
=
4 22512126 mm
a
200 x 200 x 16 (moment of inertia = frame is satisfactory for vertical stiffening
= 2251.2 3 2342 cm )
cm4
BOTTOM PLATE SUPPORT SPACING using a minimum plate thickness of 4.57 mm calculated for side plates above, the maximum spacing of bottom plate supports:
lb 1.254t
6
S
gH
=
0.406
m
TOP PLATE THICKNESS Dimensions of top plate Length a = Width b = Constant based on length to width ratio a/b a/b = α = Poisson's ration Total dead weight on tank top plate
= = Sum of Radii of load contacts with top plate r =
4.4 3.2
m m
1.375 -0.000125 (See Appendix) 0.3 325.69 3195.0 1475
kg N
(Note 2)
mm
Total Stress due to dead load on 4.57mm required plate thickness
3W 1 ln 2b 2 2t r
=
30608563 N/m2
2 This Stress value is < S ( 117.9E+06 N/m ) therefore required thickness for side plates is adequate
Selected thickness
=
Page 4 of 8
8
mm
7
WEIGHT CALCULATIONS a
Weight of Tank Plates (Surface area of tank * tank thickness * Density of tank material) i- Side plates 2170.368 2t p ( LH WH ) = ii- Bottom Plate kg = 791.28 LWt s p iii- Top Plate abts p = 884.224 Total weight of tank plates
b
=
3845.872
Weight of Stiffeners Weight of one vertical stiffener (CSA*Length*density of stiffener) Total Weight of vertical Stiffeners
= =
84.78 847.8
kg kg
Weight of top edge stiffening (CSA*Length*density of stiffener)