Minimum Thickness of Shell at Bottom Calculator

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✖Hydrostatic pressure refers to the pressure that any fluid in a confined space exerts. If fluid is in a container, there will be some pressure on the wall of that container.ⓘ Hydrostatic Pressure [p_hydrostatic]			+10% -10%
✖The nominal tank diameter is a measure of the size or capacity of a tank. It refers to the diameter of the tank as designated by the manufacturer or designer.ⓘ Nominal Tank Diameter [D]			+10% -10%
✖The Allowable Stress is also known as working load and is the ratio of tensile strentgth and factor of safety.ⓘ Allowable Stress [f]			+10% -10%
✖Joint efficiency is a factor required in all process equipment design calculations that accounts for how reducing the allowable stress of the material.ⓘ Joint Efficiency [J]			+10% -10%
✖Corrosion allowance is defined as an extra thickness normally added to carbon and low alloy steel to mitigate the CO2 corrosion rate.ⓘ Corrosion Allowance [c]			+10% -10%

✖Minimum Thickness of Shell without corrosion allowance for each component of a shell based on the appropriate design code calculations and code allowable stress.ⓘ Minimum Thickness of Shell at Bottom [t_minimum]

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Formula

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Minimum Thickness of Shell at Bottom

Formula

`"t"_{"""min"i"mum"} = (("p"_{"hydrostatic"}*"D")/(2*"f"*"J"))+"c"`

Example

`"11.98607mm"=(("0.08N/mm²"*"3000mm")/(2*"95N/mm²"*"0.85"))+"10.5mm"`

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Minimum Thickness of Shell at Bottom Solution

STEP 0: Pre-Calculation Summary

Formula Used

Minimum Thickness of Shell = ((Hydrostatic Pressure*Nominal Tank Diameter)/(2*Allowable Stress*Joint Efficiency))+Corrosion Allowance
t_minimum = ((p_hydrostatic*D)/(2*f*J))+c
This formula uses 6 Variables

Variables Used

Minimum Thickness of Shell - (Measured in Meter) - Minimum Thickness of Shell without corrosion allowance for each component of a shell based on the appropriate design code calculations and code allowable stress.
Hydrostatic Pressure - (Measured in Pascal) - Hydrostatic pressure refers to the pressure that any fluid in a confined space exerts. If fluid is in a container, there will be some pressure on the wall of that container.
Nominal Tank Diameter - (Measured in Meter) - The nominal tank diameter is a measure of the size or capacity of a tank. It refers to the diameter of the tank as designated by the manufacturer or designer.
Allowable Stress - (Measured in Pascal) - The Allowable Stress is also known as working load and is the ratio of tensile strentgth and factor of safety.
Joint Efficiency - Joint efficiency is a factor required in all process equipment design calculations that accounts for how reducing the allowable stress of the material.
Corrosion Allowance - (Measured in Meter) - Corrosion allowance is defined as an extra thickness normally added to carbon and low alloy steel to mitigate the CO2 corrosion rate.

STEP 1: Convert Input(s) to Base Unit

Hydrostatic Pressure: 0.08 Newton per Square Millimeter --> 80000 Pascal (Check conversion here)
Nominal Tank Diameter: 3000 Millimeter --> 3 Meter (Check conversion here)
Allowable Stress: 95 Newton per Square Millimeter --> 95000000 Pascal (Check conversion here)
Joint Efficiency: 0.85 --> No Conversion Required
Corrosion Allowance: 10.5 Millimeter --> 0.0105 Meter (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

t_minimum = ((p_hydrostatic*D)/(2*f*J))+c --> ((80000*3)/(2*95000000*0.85))+0.0105

Evaluating ... ...

t_minimum = 0.0119860681114551

STEP 3: Convert Result to Output's Unit

0.0119860681114551 Meter -->11.9860681114551 Millimeter (Check conversion here)

FINAL ANSWER

11.9860681114551 Millimeter <-- Minimum Thickness of Shell

(Calculation completed in 00.016 seconds)

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Created by Heet

Thadomal Shahani Engineering College (Tsec), Mumbai

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National Institute of Technology (NIT), Meghalaya

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< 12 Design of Shell Calculators

Minimum Thickness of Shell at Bottom

Go Minimum Thickness of Shell = ((Hydrostatic Pressure*Nominal Tank Diameter)/(2*Allowable Stress*Joint Efficiency))+Corrosion Allowance

Minimum required Total Plate Thickness

Go Thickness Corroded Plate = ((Constant of Scaled Distance*Pressure Corroded Plate*(Length Corroded Plate^2))/(Maximum Allowable Bending Stress))^0.5

Circumferential Length of Plate

Go Circumferential Length of the Plate = (pi*Nominal Tank Diameter)-(Weld Allowance*Number of Plates)

Effective Area of Roof Plates

Go Effective Area of Roof Plates = 0.75*Roof Plate Thickness*(Radius of Curvature of Roof*Roof Plate Thickness)^0.5

Effective Area of Shell Plates

Go Effective Area of Shell Plates = 1.5*Shell Plate Thickness*(Radius of Storage Tank*Shell Plate Thickness)^0.5

Total Area at Roof Load

Go Total Area at Roof Load = Area of the Curb Angle+Effective Area of Shell Plates+Effective Area of Roof Plates

Total Shell Plates required

Go Total Shell Plates Required = Number of Layers*Plates required for Each Layers

Pressure at Bottom of Tank

Go Hydrostatic Pressure = 10*Density of Liquid Stored*(Height of Tank-0.3)

Maximum Liquid Pressure on Tank Walls

Go Pressure Corroded Plate = Density of Liquid Stored*Height of Tank

Height of Tank given Maximum Pressure

Go Height of Tank = Pressure Corroded Plate/Density of Liquid Stored

Section Modulus of Wind Girder

Go Section modulus = 0.059*Diameter of Tank^(2)*Height of Tank

Number of Layers

Go Number of Layers = Height of Tank/Width of Plate

Minimum Thickness of Shell at Bottom Formula

Minimum Thickness of Shell = ((Hydrostatic Pressure*Nominal Tank Diameter)/(2*Allowable Stress*Joint Efficiency))+Corrosion Allowance
t_minimum = ((p_hydrostatic*D)/(2*f*J))+c

What is Design Thickness?

Thickness is the one used for the stiffness analysis while the Design Thickness is the one used for reinforcement design. Generally you would use the same value for both. However if there is a situation where you would want the analysis to be based on a certain thickness but the reinforcement calculated based on a different thickness, you could use different values for these. For example you may have some areas in the mat which may be thicker and you may want to consider that additional thickness for the stiffness analysis but when designing the reinforcement, you may choose to use a uniform value for the entire mat.

How to Calculate Minimum Thickness of Shell at Bottom?

Minimum Thickness of Shell at Bottom calculator uses Minimum Thickness of Shell = ((Hydrostatic Pressure*Nominal Tank Diameter)/(2*Allowable Stress*Joint Efficiency))+Corrosion Allowance to calculate the Minimum Thickness of Shell, Minimum Thickness of Shell at Bottom is used to ensure that the tank has sufficient strength and structural integrity to hold the contents of the tank safely. Factors that may influence the minimum thickness of the shell at the bottom of a tank include the type and size of the tank, the material used to construct the tank, the type of liquid or gas that the tank will be used to store, the pressure and temperature of the contents of the tank, and the expected lifespan of the tank. Minimum Thickness of Shell is denoted by t_minimum symbol.

How to calculate Minimum Thickness of Shell at Bottom using this online calculator? To use this online calculator for Minimum Thickness of Shell at Bottom, enter Hydrostatic Pressure (p_hydrostatic), Nominal Tank Diameter (D), Allowable Stress (f), Joint Efficiency (J) & Corrosion Allowance (c) and hit the calculate button. Here is how the Minimum Thickness of Shell at Bottom calculation can be explained with given input values -> 11.98607 = ((80000*3)/(2*95000000*0.85))+0.0105.

FAQ

What is Minimum Thickness of Shell at Bottom?

Minimum Thickness of Shell at Bottom is used to ensure that the tank has sufficient strength and structural integrity to hold the contents of the tank safely. Factors that may influence the minimum thickness of the shell at the bottom of a tank include the type and size of the tank, the material used to construct the tank, the type of liquid or gas that the tank will be used to store, the pressure and temperature of the contents of the tank, and the expected lifespan of the tank and is represented as t_minimum = ((p_hydrostatic*D)/(2*f*J))+c or Minimum Thickness of Shell = ((Hydrostatic Pressure*Nominal Tank Diameter)/(2*Allowable Stress*Joint Efficiency))+Corrosion Allowance. Hydrostatic pressure refers to the pressure that any fluid in a confined space exerts. If fluid is in a container, there will be some pressure on the wall of that container, The nominal tank diameter is a measure of the size or capacity of a tank. It refers to the diameter of the tank as designated by the manufacturer or designer, The Allowable Stress is also known as working load and is the ratio of tensile strentgth and factor of safety, Joint efficiency is a factor required in all process equipment design calculations that accounts for how reducing the allowable stress of the material & Corrosion allowance is defined as an extra thickness normally added to carbon and low alloy steel to mitigate the CO2 corrosion rate.

How to calculate Minimum Thickness of Shell at Bottom?

Minimum Thickness of Shell at Bottom is used to ensure that the tank has sufficient strength and structural integrity to hold the contents of the tank safely. Factors that may influence the minimum thickness of the shell at the bottom of a tank include the type and size of the tank, the material used to construct the tank, the type of liquid or gas that the tank will be used to store, the pressure and temperature of the contents of the tank, and the expected lifespan of the tank is calculated using Minimum Thickness of Shell = ((Hydrostatic Pressure*Nominal Tank Diameter)/(2*Allowable Stress*Joint Efficiency))+Corrosion Allowance. To calculate Minimum Thickness of Shell at Bottom, you need Hydrostatic Pressure (p_hydrostatic), Nominal Tank Diameter (D), Allowable Stress (f), Joint Efficiency (J) & Corrosion Allowance (c). With our tool, you need to enter the respective value for Hydrostatic Pressure, Nominal Tank Diameter, Allowable Stress, Joint Efficiency & Corrosion Allowance and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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