Manual Usuario Intergraph TANK 2014

7/18/2019 Manual Usuario Intergraph TANK 2014

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TANKUser's Guide

Version 2014 (6.0)

December 2013

DICAS-PE-200107E


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2 TANK User's Guide

Copyright

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TANK User's Guide 3

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4 TANK User's Guide


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TANK User's Guide 5

ContentsWhat's New in TANK 2014 .......................................................................................................................... 9

Introduction ................................................................................................................................................ 11

Program Capabilities ............................................................................................................................. 11

TANK Input ............................................................................................................................................ 13

TANK Interface ........................................................................................................................................... 15

File Tab ................................................................................................................................................. 16Home Tab ............................................................................................................................................. 17

File Panel ........................................................................................................................................ 18

Edit Panel ....................................................................................................................................... 18

Title Page Panel ............................................................................................................................. 19

Input Panel ..................................................................................................................................... 19

Scratchpad Panel ........................................................................................................................... 61Analyze Panel ................................................................................................................................. 65

Units Panel ..................................................................................................................................... 652D Plot Panel .................................................................................................................................. 66

Tools Tab .............................................................................................................................................. 67Configuration .................................................................................................................................. 69Make Unit ....................................................................................................................................... 75

Material Database Editor ................................................................................................................ 76

Diagnostics Tab .................................................................................................................................... 83

CRC Check ..................................................................................................................................... 83

Program Scanner ........................................................................................................................... 84Error Review ................................................................................................................................... 85

ESL Tab ................................................................................................................................................ 85Access Registry Details through the ESL....................................................................................... 87

Help Tab ................................................................................................................................................ 88

Build a Tank Vessel ................................................................................................................................... 91

Input Data .............................................................................................................................................. 92Starting TANK ................................................................................................................................. 92Define the Tank Data...................................................................................................................... 92Define the Shell Courses ................................................................................................................ 93Define the Roof Specifications ....................................................................................................... 94

Check the Input for Errors ..................................................................................................................... 95Complete the Error Check Phase ................................................................................................... 96

Analyze the Tank .................................................................................................................................. 97

TANK Program Files ....................................................................................................................... 98

Solution Overview ........................................................................................................................... 99Generate Output Reports .................................................................................................................... 101

Use the Output Processor ............................................................................................................ 102Report List Tab ............................................................................................................................. 104Options Tab .................................................................................................................................. 114


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View the Graphics Output ................................................................................................................... 115

3D View ........................................................................................................................................ 115

2D View ........................................................................................................................................ 118

Examples .................................................................................................................................................. 125

Example Problem APP_K ................................................................................................................... 125

Example Problem O_WC .................................................................................................................... 125Example Problem A_WC .................................................................................................................... 125

Example Problem KOCZWARA .......................................................................................................... 126

Example Problem B&Y ....................................................................................................................... 126

Example Problem SSTEST1 ............................................................................................................... 126

Example Problem TEST1 ................................................................................................................... 126Example Problem SSC1 ..................................................................................................................... 126Example Problem APP_P ................................................................................................................... 126Example Problem EXTERN01 ............................................................................................................ 126Example Problem SEIS01 .................................................................................................................. 126

Appendix A - Program Fil e List .............................................................................................................. 127

Main Set .............................................................................................................................................. 127Help & Error Processing Set ............................................................................................................... 128

English Text Set .................................................................................................................................. 128API Data Set ....................................................................................................................................... 128Examples Data Set ............................................................................................................................. 129

Appendix B - Standard Uni ts Systems .................................................................................................. 131

Appendix C - List of Materials ................................................................................................................ 133

* ASTM Standards .............................................................................................................................. 134

* CSA Standards ................................................................................................................................. 134

* National Standards ........................................................................................................................... 134* ISO 630 ............................................................................................................................................. 135

* Stainless Steels (Temperature Dependent) ..................................................................................... 135

* Duplex Stainless Steels (Temperature Dependent) ......................................................................... 135* Unknown For API-653 ...................................................................................................................... 135

Appendix D - Defau lt Con figu rat ion Direct ives .................................................................................... 137

Appendix E - Selected References ........................................................................................................ 139

Appendix F - Revision History ............................................................................................................... 141

Version 5.00 Changes (4/13) .............................................................................................................. 141Version 4.00 Changes (3/12) .............................................................................................................. 142Version 3.30 Changes (9/10) .............................................................................................................. 142

Version 3.20 Changes (9/09) .............................................................................................................. 142

Version 3.10 Changes (9/08) .............................................................................................................. 142

Version 3.00 Changes (11/07) ............................................................................................................ 143

Version 2.55 Changes (10/05) ............................................................................................................ 143

Version 2.50 Changes (3/04) .............................................................................................................. 143Version 2.40 Changes (7/02) .............................................................................................................. 143Version 2.30 Changes (2/02) .............................................................................................................. 144


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Version 2.20 Changes (9/00) .............................................................................................................. 144

Version 2.10 Changes (5/00) .............................................................................................................. 144

Version 1.60 / 2.00 Changes (1/99) .................................................................................................... 144

Version 1.51 Changes (9/97) .............................................................................................................. 145

Version 1.50 Changes (5/97) .............................................................................................................. 145Version 1.40 Changes (9/96) .............................................................................................................. 146

Version 1.31 Changes (2/96) .............................................................................................................. 146

Version 1.30 Changes (8/95) .............................................................................................................. 147Version 1.20 Changes (11/94) ............................................................................................................ 147Version 1.10 Changes (6/94) .............................................................................................................. 148

Index ......................................................................................................................................................... 149


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8 TANK User's Guide


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TANK User's Guide 9

The following changes have been made to TANK 2014:

Version 2014 (6.0)

Updated graphic model to include 3D View.

Updated the software to support API 650, 12th Edition (Errata, July 2013).

Updated the software to support API 2000, 6th Edition (November 2009).

Updated the software to support API 653, 4th Edition (November 2013).

Completed various UI updates.

Added a new Check for Update option for software updates.

Updated Supported Cone Roof Data to include a Structural Database input, which isseparate from the tank-specified database input.

Revised the software to store the Reload Last File at Startup configuration setting in theregistry settings.

Updated Help with information for all enhancements and previous software revisions.

For a complete TANK revision history, seeAppendix F - Revision History(on page141).

What's New in TANK 2014


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TANK User's Guide 11

S E C T I O N 1

TANK is a software tool for the design and analysis of large storage tanks using the API-650and API-653 design codes. TANK incorporates interactive dialogs for user input, input validationto avoid run time errors, and extensive diagnostics to assist in problem resolution.

This manual provides detailed instructions for the configuration and operation of the program.Additionally, cell-specific help for guidance and information can be launched by pressing F1.For installation information, refer to the TANK Installation Guide.

Program Capabili tiesTANK incorporates the major considerations of API-650 Section 5 and several of the

Appendices. These include:

Shell course thickness and fluid height computations according to either the variable pointmethod or the one foot method.

Wind girder computations for the top and up to five intermediate girders.

Minimum metal temperature reporting.

Shell course thickness and fluid height computations according to Appendix A.

Seismic computations according to Appendix E.

Internal pressure considerations according to Appendix F.

Grillage computations according to Appendix I.

Material modifications due to temperature according to Appendix M.

Cycle Life computations according to Appendix M.

Introduction


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Introduction


Nozzle flexibilities and limiting loads according to Appendix P, including the limiting loadinteraction diagrams.

Stainless Steel considerations according to Appendix S.

External pressure computations according to Appendix V.

Duplex Stainless Steel considerations according to Appendix X. An alternate nozzle stiffness calculation routine according to PVP-1279.

Tank sizing/costing scratch-pad.

A Material Databaseeditor.

TANK also incorporates the following considerations from API-653:

Material modifications according to Section 2.3.

Shell Settlement evaluation according to Appendix B.

Retiring thicknesses and remaining corrosion allowance.

Corroded hydrotest case

Shell thickness evaluations using individual joint efficiencies and L locations

Bottom Plate minimum thickness determinations

Hydrotest heights

TANK can also design or analyze a supported cone roof according to the procedures outlined inBrownell & Young. TANK also incorporates venting computations from API-2000.

TANK relies extensively on data specified in the API codes. This includes the material data fromTable 5.2, and digitized data from Appendix P. Other data tables have also been incorporatedinto the program where necessary.

Every effort is made to insure that TANK is up to date with the current codes.


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Introduction


TANK InputThe first step in the design or analysis of a tank is to generate an input file, which describes thecharacteristics of the tank. Each tank requires an input file with a unique job name for eachconfiguration to be studied. All of the tank particulars and descriptive information are stored inthis input file. The input file name consists of the job name as the prefix, followed by a .TKIextension.

Start the input process by selecting File > New or File > Open (and browsing to select anexisting TANK file) and then choosing any option from the Inputpanel.

TANK separates the input data into logical categories. Each category addresses a specific code

requirement on design task. You must enter tank input data using the General Tank Datacommand to save the tank input file. For more information on tank input data commands, seethe Input Panel section in the TANK User's Guide.

As with most software programs, there is an option to save the current state of the input data to

a file. With TANK, you can save the input by using File > Save, or by clicking Save . Saveyour input frequently during any extended editing session. When you begin an analysis thesoftware also saves the data automatically, but it is always best to save the data yourself too.

When you are finished defining the input for your vessel, use theAnalyze panel to verify and/oranalyze the job.

For more information, review the other TANK commands in the TANK User's Guide, and thensee Build a Tank Vessel(on page91).


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Introduction



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S E C T I O N 2

The main TANK window has a quick access toolbar in the top left corner (indicated with a red 1in the picture below), which you can customize with the commands that you use the most.Directly below the quick access toolbar is a series of ribbons (indicated by the red 2) and panels.Each ribbon tab contains different panels related to that ribbon. For example, on the Home Tab(on page17), you can complete commands related to files (on File Panel(on page18), shownwith a red 3), perform edits to tank data (on the Edit Panel(on page18)shown with a red 4),specify title information for the job (on the Title PagePanel(on page19)), input tank data (onthe Input Panel(on page19)), and more.

The TANK panel commands primarily relate to input options, along with some commands foroutput review (both text and graphics). The other TANK tabs include commands for softwaretools, diagnostic utilities (such as the Material DatabaseEditor), ESL review, and help options.

In This SectionFile Tab.......................................................................................... 16Home Tab ...................................................................................... 17Tools Tab ....................................................................................... 66Diagnostics Tab ............................................................................. 83ESL Tab ......................................................................................... 85Help Tab ........................................................................................ 88

TANK Interface


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File TabControls general operations of TANK files.

The File tab contains the following commands:

Open- Opens an existing TANK (.tki) file.

Recent - Displays recently-opened files and folder. Select a file to open.

Save- Saves the open .tki file.

Save As- Saves the open .tki file with a new name.

Print Setup- Selects a printer and printer options.

Preview/Print- Previews and prints the graphics in the open file.

Help- Displays help, getting started, contact information, and versionnumber for TANK.

System Folder- Opens the System folder in Windows Explorer.

Exit- Closes the software.


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Home TabDisplays the most commonly-used commands in TANK. The software displays with the Hometab active by default.

The Home tab contains the following panels:

Panel Description

File Provides file management commands, such as Open, Save,and Print. For more information, see File Panel(on page18).

Edit Provides commands for basic editing tasks in TANK. For moreinformation, see EditPanel(on page18).

Title Page Provides commands that let you add descriptive informationabout the tank to your job. For more information, see Title PagePanel(on page19).

Input Provides commands to add input data to a tank. For moreinformation, see InputPanel(on page19).

Scratchpad Provides scratchpads for your tank, where you can computedata that you later enter in the tank input boxes. For moreinformation, see ScratchpadPanel(on page61).

Analyze Provides commands for analyzing the tank. For moreinformation, seeAnalyzePanel(on page65).

Units Provides commands for changing units used in the tank job. Formore information, see Units Panel(on page65).

2D Plot Provides commands for plotting out various tank details usingthe graphics processor in 2D View. For more information, see2D PlotPanel(on page66)and View the Graphics Output(onpage115).


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File PanelThe Home > File panel consists of the standard program options for creating new TANK jobs,opening existing jobs, and saving jobs.

The commands associated with this panel include:

New - Creates a new TANK (.tki) file.

Open -Opens an existing TANK file.

Save - Saves the TANK file.

System Folder -Opens the system folder for TANK. Log files, report header information,and other software information is saved in this folder.

Edit Panel

The Home > Edit panel includes commands that let you perform common editing tasks to yourtank data.


Cut - Cuts selected elements from the document and pastes them to the Clipboard. Theselected elements replace the previous contents of the Clipboard.

Copy - Copies selected elements to the Clipboard. The selected elements replace theprevious contents of the Clipboard.

Paste -Inserts the Clipboard contents into the file. The command is not available if theClipboard is empty.


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Title Page PanelTheHome > Tit le Page panel provides commands that let you describe the tank being studied.


Title Page - Displays the Title Pagedialog box. Enter a text description. Use of this dialogbox is optional, but is highly recommended.

Default Tit le Page -Restores the default title page, located in the file TITLE.HED.

The title page can contain 60 lines of 75 characters. You can scroll down to view any additional

lines. Use standard editing functions to enter information in this dialog box.

The following shows an example of a title page file.

Input PanelThe Home > Inputpanel contains all of the input commands necessary to define a TANK job.Each command defines a type of data.


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General Tank Data -Opens the General Tank Datadialog box. Data must be provided onthis dialog box for every tank analyzed. This information consists of the diameter, thenumber of courses, the course height, course thickness, course material, fluid depth, fluidspecific gravity, temperature, pressure, external loads, and the needed code. For more

information, see General Tank Data(on page21).

Seismic Data Specifications - Opens the Seismic Data Specifications dialog box, whereyou can describe the seismic parameters associated with the tank location. Thecomputations that use this data are found in API-650 Appendix E. This is dialog box is anoptional input, depending on the tank. For more information, see Seismic DataSpecifications(on page33).

Nozzle Stiffness - Opens theNozzle Stiffnessdialog box, which allows you to specify upto fifteen low nozzles on the tank. The computations that use this data are found in API-650

Appendix P. This dialog box is an optional input, depending on the tank. For moreinformation, see Nozzle Stiffnesses(on page35).

External Pressure - Opens theAppendix V Ex ternal Pressuredialog box, where you canenter data that determines the external pressure capacity of the tank. For more information,see External Pressure(on page38).

Inspection Data - Opens theAPI-653 Service Measurement Dat adialog box. For moreinformation, see Inspection Data(on page39).

Roof Specification - Opens the Roof Specification Parameters dialog box, where youcan enter roof descriptive parameters. The computations that use this data are found in

API-650 Appendix F and in the text by Brownell & Young. This dialog box is an optionalinput, depending on the tank. For more information, see Roof Specifications(on page42).

Grillage Review - Opens the Grillage Reviewdialog box, where you can specify the

grillage parameters. The specifics of this computation are found in API-650 Appendix I,Section I.7. This dialog box is an optional input, depending on the tank. For moreinformation, see Grillage Review(on page56).

Cycle Life - Opens theAppendix M Cycle Li fe Dataspecification used in the proceduresoutlined in API-650 Appendix M to determine the allowed number of fill-empty cycles thetank can undergo without a detailed stress analysis. This dialog is an optional input,depending on the tank. For more information, see Cycle Life(on page57).

Shell Settlement -Opens the Shell Settlement Datadialog box used in the proceduresoutlined in API-653 Appendix B to determine the maximum and allowed out-of-planesettlement of the tank shell. This dialog box is an optional input, depending on the tank. Formore information, see Shell Settlement(on page58).

Venting Requirements -Opens theAPI-2000 Venting Datadialog box used to determinethe necessary venting for in-breathing, out-breathing, and fire. For more information, seeVenting Requirements(on page59).


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General Tank Data

The General Tank Datadialog box (accessed by selecting Home>Input > General Tank Data

) lets you define details about the basic characteristics of the tank.

The Tank Datatab specifies the overall characteristics of the tank. For each input cell, adescriptive comment defines the expected input. Where applicable, the expected unitsdisplay to the right of the input cell. For more information, see Tank Data Tab(on page22).

The Shell Coursestab displays a grid where the height, thickness, corrosion allowance,material name, material design stress, and material test stress can be specified for eachshell course. The material and its properties specified on this tab are used as default valuesfor all of the shell courses. You can use the options on this tab to change the material, ifnecessary, on a course-by-course basis. For more information, see Shell Courses Tab(onpage27).

The Wind Details tab defines detailed wind parameters specific to ASCE #7. If these timesare not defined, TANK uses the recommended API 650 defaults. For more information, seeWind Details Tab(on page29).

TheAnchor Bolt and Gusset Detai ls tab defines the data necessary for the software todesign anchorage, if necessary. API-650 Section 5.12 defines a number of different caseswhich must be evaluated (depending on the tank), and may result in the design of requiredanchorage. For more information, seeAnchor Bolt and Gusset Details Tab(on page29).


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Tank Data Tab

The Tank Datatab specifies the overall characteristics of the tank. For each input cell, adescriptive comment defines the expected input. Where applicable, the expected units display tothe right of the input cell.

API Des ign Code- Defines whether API-650 or API-653 rules are applied to the current job file.Select the entry from the list.

API-650 is intended for the design of new tanks and can be implemented in eitherdesignor analysismodes. Because API-653 is intended for the analysis of existing tanks, it can only beused in analysis mode.

Design Method- Specifies the preferred method of evaluating the shell course thicknessrequirements. You can choose: Variable Point, One Foot, orAppendix A. The DesignMethodalso determines which method is used to compute the allowed fluid heights.

Run Objective- Specifies whether the software should analyzethe tank based on your input, ordesignthe necessary parameters to satisfy the API code.

The setting of this option affects all computations following the shell coursethickness evaluation, as described below:

If you select Design, subsequent calculations for wind girders, seismic, and internalpressure use the larger of the design or test thicknesses.

If you selectAnalyze, subsequent calculations use the user-specified course thicknesses.The computed thicknesses for the design and test cases are reported for informationpurposes only. A message is included in the output report whenAnalyze is selected.

Design Temperature- Defines the design temperature in the indicated units. API-650 limits the

design temperature to 200F / 93C. If the design temperature exceeds this limit but is less

than 500 F / 260C, then the rules of Appendix M are applied.

Design temperatures in excess of 500F / 352C cause a fatal error.

If the value of the design temperature is changed, the software automatically implements aroutine to interpolate the data from API-650 Table P-1. The resulting values of modulus andexpansion coefficient are inserted into the Nozzle dialog box.

Design Pressure at Top- Defines the design pressure in the indicated units.

API-650, Appendix F, limits the design pressure to 2.5 psi / 17.2 kPa.

Tank Nominal Diameter [D]- Defines the diameter of the tank.

According to API-650, the software assumes the tank diameter is the centerline diameterof the bottom shell course plates.

Tank Shell Height [HTK]- Defines the total height of the tank shell. This value should be thesum of the individual course heights, and is used in the wind load computations.

Design Liquid Level [H]- Defines the height of the design liquid level. This is the height fromthe tank bottom to the top of the shell, or to the bottom of any overflow device.

Liquid Specific Gravity [G]- Defines the specific gravity of the fluid.

This value is used only in the Design case. The software automatically uses a specificgravity of 1.0 for the Hydrotest case.


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Weight of Attachments/Structures- Defines the total weight of the attachments and structureson the roof and shell which should be considered to resist uplift and in the maximum allowedpressure computation.

Distance Down to Top Wind Girder- Defines the distance from the top of the tank shell to thelocation of the top wind girder.

If the top wind girder is at the top of the shell, type 0.

If the top wind girder is below the top of the tank, such as for a walk-way, type the actualdistance.

Joint Effi ciency (App A or 653 [E]- According to Appendix A.3.4, the joint efficiency should beeither 0.85 or 0.70. API-653 Section 2.3.3 also uses this value of joint efficiency. No othercomputations use this value, so the default of 1.0can be left alone for variable point and onefoot API-650 calculations.

API-653 2nd Edition provides Table 2-1 for weld joint efficiencies if the original E value isunknown. This table is reproduced as follows:

Standard Edition & Year Joint Type Joint Efficiency E App li cabil it y or Limits

API-650 7th & Later Butt 1.00 Basic Standard

(1980-Present) Butt 0.85 Appendix A - Spot RT

Butt 0.70 Appendix A - No RT

1st - 6th Butt 0.85 Basic Standard

(1961-1978) Butt 1.00 Appendices D&G

API-12C 14th & 15th(1957-1958)

Butt 0.85

3rd-13th(1940-1956)

Lap (a) 0.75 3/8 inch max t

Butt (c) 0.85

1st & 2nd(1936-1939)

Lap (a) 0.70 7/16 inch max t

Lap (b) 0.50 + k/5 1/4 inch max t

Butt (c) 0.85

Unknown Lap (a) 0.70 7/16 inch max t

Lap (b) 0.50 + k/5 1/4 inch max t

Butt (c) 0.85

Lap (d) 0.35


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(a) Full double lap welded.

(b) Full fillet weld with at least 25% intermittent full fillet opposite side:k = percent of intermittent weld expressed in decimal form.

(c) Single butt-welded joints with a back-up bar were permitted from theyears of 1936 to 1940 and 1948 to 1954.

(d) Single lap welded only.

Wind Velocit y- Defines the wind velocity acting on the tank. You should follow Section5.9.7.1a. The standard is a 120 mile per hour (53.6 m/sec) wind but may be increased toaccount for additional tank height, wind gust, internal pressure, or open-top tanks.

Several configuration settings control how the wind pressure is computed and applied to thetank. These configuration settings are as follows:

Roof Projection in Wind Moment - Turns on and off wind loads on the roof.

10% Plus 5psf in Wind Moment - Defines the basic wind moment definition according toSection 5.9.7.

Section 5.11 Wind Pressure - Defines the wind pressure to be used for Section 5.11stability.

Pressure Ratio [Fp]- Defines the ratio of the normal operating pressure to the design pressure.The value of Fp is used in Appendix R and Section 5.11 of the API 650 Code.

The minimum value of Fp is 0.4. Values lower than 0.4 are automatically set to 0.4.

The maximum value of Fp is 1.0. Values higher than 1 are automatically set to 1.

If your tank has zero internal design pressure, enter a value of 0.4 for Fp.

Default Shell Course Material- Defines the default material name for all individual shellcourses.

Click the down arrow on the Default Shell Course Materialbox to view and change the shellcourse material properties. The material data specified here pertains to the entire tank. If thematerial varies over the shell courses, you must specify that on the Shell Courses Tab(on page27).


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Click to the right of the box to display the Material Selection dialog box (shown below),from which you can select any valid material from the active database. Click Tools >Configuration > Database Defini tions (on page73)to select or change the active materialdatabase file.

Number of Shell Courses- Defines the number of shell courses in the tank. Use this box tocheck the shell course input and control the shell course generation, if necessary.

Insulation Thickness- Defines the thickness of the insulation on the tank shell. The insulationis assumed to extend from the bottom of course #1 to the top of the last (top) course.

Insulation Density- Defines the density of the tank insulation.

Plate Length -Defines the length of the plate for the tank.

The software uses this input for the 3D plot only.

Course Offset -Defines the offset distance of the weld between the plates.



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The following graphic explains the course offset in relation to the plate length.

Include Annular Base Plate Details - Defines whether the tank has an annular base ring. If the

tank does not have an annular base ring, do not select this check box.

Include Wind Moment in Appendix F.4.2 Calculations - Defines whether a wind moment termis included. As of API-650 9th Edition, the equation for the maximum allowed pressure inSection F.4.2 includes a wind moment term. A later code interpretation makes the use of thiswind moment term optional.

To include the wind moment term, select this check box. Clear this check box to ignore the windmoment term (as in the 8th Edition).

Entire shell course evaluation - Defines whether the shell thickness calculation is for the entireshell course according to API-653 Section 4.3.3.1. This selection uses equation 4.3.3.1.a, whichdeducts one foot from the fluid height.

This deduction only occurs if the one-foot method is in use.

The software only displays this box when you select 653 in theAPI Des ign Codebox at thetop of the Tank Datatab.

Local area of shell only - Specifies whether the shell thickness calculation is for a local area ofthe shell course, according to API-653 Section 4.3.3.1. This selection uses equation 4.3.3.1.b,which does not deduct one foot from the fluid height.

The software only displays this box when you select 653 in theAPI Design Codebox atthe top of the Tank Datatab.


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Shell Courses Tab

The material and its properties specified on the Shell Coursestab are used as default valuesfor all of the shell courses. You can use the options on this tab to change the material, ifnecessary, on a course-by-course basis. The Shell Coursestab displays a grid where the

height, thickness, corrosion allowance, material name, material design stress, and material teststress can be specified for each shell course.

The design and test stress values for the specified material are normally acquired from theMaterial Database. Initially, all courses acquire the same material, as specified on the TankData tab. However, as necessary, specific shell courses may be assigned a differentmaterial, or the material for specific courses may be manually modified by the user.

For carbon steels from Table 3-2, the software fills in the Sd and St values. For stainlesssteels, the value used for Sd is unknown until run-time. Therefore, for stainless materials,the allowable versus temperature table displays in the right-most grid columns of this dialog.For stainless materials, the value of Sd (on this dialog) is shown as zero. The actual valueused in the calculations is reported in the output.

Height - Defines the height for the current shell course in the specified units. The sum of allshell course heights should equal the tank shell height entered previously.

If it is constant, the shell course height does not need to be specified for any course after thefirst course.

If this cell is left blank, the software duplicates the shell course height to all requiredcourses.

Thickness- Specifies the thickness for the current shell course. If the purpose of this job is todesign the shell course thickness, then enter a good starting value (see API-650 5.6.1.1). If thiscell is left blank for the first course, the software sets the thickness according to API-650 Table5.6.1.1.




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Corrosion Allowance- Defines the corrosion allowance to be considered in the thicknessevaluations for shell course.



Material - Displays the material name you selected for the shell course on the Tank Datatab.

To view the properties for the selected shell course material, click to the right of the box toopen the Material Properties dialog box.

You can edit the properties in the Material Propertiesdialog box, to override or modify theproperties retrieved from the database for a particular tank.

To change the shell course material specified in the Material box, clear the box and

press Enter. Then, click to the right of the blank box to open the Material Selection dialogbox, from which you can double-click to select a new material.

Design Stress, Sd- Represents the allowable design stress, referred to as Sd in the API code.This value is automatically registered by the software if the material was selected from thedatabase.

If necessary, the value of design allowable stress obtained from the database may beoverridden by typing in a different value.

For stainless steels, this value is displayed as zero, since a temperature versus allowabletable is used instead.

Hydro Test Stress, St- Represents the allowable test stress, referred to as St in the API code.This value is automatically registered by the software if the material was selected from thedatabase.

If necessary, the value of test allowable stress obtained from the database may be overriddenby typing in a different value.


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SSD1 through SSD5- Represents the allowable stress for a stainless steel according toAPI-650 Appendix S, Table S-2. These values are used during the computation phase of thesolution to determine the actual Sd value.

For stainless steels, these values are interpolated during the solution phase. For this reason, thevalue of Sd (at the left) is displayed as 0.

Wind Details Tab

Provides options for defining detailed wind parameters specific to ASCE #7.

If these values are not defined, TANK uses the recommended API 650 defaults.

Veloci ty pressure exposure coefficient (Kz) - Specifies the velocity pressure coefficient asdefined by ASCE #7. If left blank, the value defaults to 1.04.

Topographic Factor (Kzt) - Defines the wind speed up factor for hills. This value should be 1.0(the default) except for those structures on isolated hills or escarpments.

Wind Directionality Factor (Kd) - Defines the wind directionality factor. API 650 recommends avalue of 0.95, the default for this option.

Importance Factor (I)- Specifies the wind importance factor as defined by ASCE #7. If leftblank, the value defaults to 1.0.

Gust Effect Factor (Gh)- Specifies the wind gust factor as defined by ASCE #7. If left blank,

the value defaults to 0.85.

User defined Wind Pressure vs. Elevation - Defines whether you want to enter wind pressureand "To" Height (elevation) values.

"To" Height -Defines the elevation.

Pressure - Defines the pressure.


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Anchor Bolt and Gusset Details Tab

TheAnchor Bolt and Gusset Detai ls tab contains the following information:

Anchor Bolt Data

Gusset and Top Plate Input (Anchor Chairs)

Anchor Bolt Data

Anchor Bo lt Diameter (op tional) (d)- Defines the bolt diameter of an existing anchorage. Thisis an optional value.

Threads per Unit Length- The software can either evaluate a user-specified design or designan anchorage according to API-650 Section 5.12. In order to size the anchor bolts, the threadpitch is necessary. The pitch is the reciprocal of the parameter known asthreads per inch.


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Type the threads per inch in the appropriate units. This is a required entry used in the event thatthe software must design an anchorage. Typical threads per inch for various size UNC bolts arelisted in the following table:

Basic Major Diameter (in) Threads per Inch

0.5000 13

0.6250 11

0.7500 10

0.8750 9

1.0000 8

1.1250 7

1.2500 7

1.3750 6

1.5000 6

1.7500 5

2.0000 4.5

2.2500 4.5

2.5000 4

2.7500 4

3.0000 4

3.2500 4

3.5000 4

3.7500 4

4.0000 4

Number of Anchor Bolts (optional)- Defines the number of anchor bolts for evaluation of anexisting anchorage. If the software redesigns the anchorage, the number of bolts will be amultiple of the bolt increment specified in the configuration.

Bolt Yield Stress- Defines the yield stress of the anchor bolts for use in Section 5.12. This is arequired entry that is used in the event that the software must design an anchorage.


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Bolt Offset from Mean Tank Diameter- Defines the offset from the mean tank diameter to theanchor bolt circle. This value must be greater than zero for bolt circles outside the tank. If thisvalue is left blank, an offset of 0.0 is used.

The software internally multiplies this value by 2.0 before adding it to the tank diametervalue.

Anchor Bo lt Cor rosion Al lowance- Defines the value of the corrosion allowance to beconsidered when sizing the anchor bolts.

Previous versions of API-650, Section F.7.4, required a corrosion allowance of at least0.25 inches.

Gusset and Top Plate Input (Anchor Chairs)

Evaluate Anchor Chair Assembly? -Activates anchor chair assembly inputs so you canspecify details for this anchor bolt.

If you select this check box, then the software activates the inputs below this section of thedialog box. Selecting this checkbox lets you evaluate the chair assembly using standardsfrom the AISI document, Steel Plate Engineering Data, Volume 1: Steel Tanks for Liquid

Storage (Revised Edition 1992).

If you clear this check box, the software disables anchor chair assembly inputs and does notevaluate the anchor bolt assembly.

Height of Gussets (hg) -Defines the height of the gussets.

Refer to the figure on the right side of the dialog box for a diagram explaining the value of [hg].

Gusset Plate Thickness - Enter the gusset plate thickness.

Refer to the figure on the right side of the dialog box for the value of [j ].

Distance between Gussets (g) -Defines the distance between gussets.

Refer to the figure on the right side of the dialog box for the value of [g ].

Width at top of Gussets (twd t) -Defines the width at the top of the gussets.Refer to the figure on the right side of the dialog box for the value of [twdt].

Width at base of Gussets (bwdt) -Defines the width at the base of the gussets.

Refer to the figure on the right side of the dialog box for the value of [bwdt] .

Top Plate Thickness (c) -Defines the top plate thickness.

Refer to the figure on the right side of the dialog box for the value of [c ].

Top Plate Circumferential Width (a) -Defines the top plate circumferential width.

Refer to the figure on the right side of the dialog box for the value of [a] .

Top Plate Radial Width (b) -Defines the top plate radial width.

Refer to the figure on the right side of the dialog box for the value of [b ].

Corrosion Allowance on Chairs (Ca) -Defines the corrosion allowance needed for anchorchairs. API 650 specifies that the corrosion allowance specified on a tank does not apply toexternal attachments, such as chairs, unless they are specified separately.

Al lowab le Tensi le St ress o f Plates (S) -Defines the allowable tensile stress of plates.


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Seismic Data Specifications

The Seismic Data Specifi cations dialog box (accessed by selecting Home > Input > Seismic

Data Specifications ) lets you specify seismic (earthquake) parameters. This dialog box isoptional for tank input.

The Seismic Data Specifi cations dialog box contains the following input fields:

Minimum Yield Strength of Bottom Plate- Defines the minimum yield strength of the bottomplate.

Minimum Yield Strength of Weld Material- Defines the minimum yield strength of the weldmaterial.

Seismic Use Group- Specifies the Seismic Use Group for the tank. See API-650 Section E.3.1for details on the various SUG categories. Valid entries for this field are 1, 2, or 3 (correspondingto SUG groups I, II, and III).

Friction Factor- Specifies the friction factor used to determine tank sliding in API-650 SectionE.7.6. API limits the maximum value of this friction factor to 0.4.

Importance Factor - Specifies the API importance factor. Usually, this value is 1.0, unlessspecified otherwise by the purchaser. API recommends that this value not exceed 1.25, and thatthis value (1.25) only be used for emergency services.


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Initial Anchorage Type- Defines the initial anchorage type as either Self or Mechanical(bolts).

Even if you specify a self-anchored tank, the requirements of the Code may be such thatanchor bolts are required. In this instance, the software will design bolting.

Earthquake Type- Defines the earthquake type as either Mapped orSite Specifi c. For more

information about earthquake types, refer to API-650 Sections E.4.2 and E.4.3.

Site Class- Defines the seismic site class according to Section E.4.6. Valid choices areAthrough F, where F represents soils that require site-specific evaluations.

Spectral Acceleration Adjustment Coefficient (K)- Defines the spectral accelerationadjustment coefficient (K). This coefficient is used to adjust the spectral acceleration from 5% to0.5% damping. If no value is specified, the coefficient defaults to 1.5.

Scaling Factor (Q)- Defines the scaling factor from the maximum considered earthquake(MCE) to the design level spectral accelerations. The value of Q is 2/3 for ASCE #7.

Transitional Period (TL)- Defines the regional-dependent transition period for longer periodground motion, in seconds. Unless otherwise specified, Transitional Periodis taken as themapped value found in ASCE #7.

Mapped Max Earthquake Short Period (Ss) - Defines Ss, which is the mapped maximumconsidered earthquake, 5% damped, spectral response acceleration parameter at short periods(0.2s), %g.

Mapped Max Earthquake 1-sec. Period (S1)- Defines S1, which is the mapped maximumconsidered earthquake, 5% damped, spectral response acceleration parameter at a period ofone second, %g.

Mapped Max Earthquake 0-sec. Period (S0)- Defines S0, which is the mapped maximumconsidered earthquake, 5% damped, spectral response acceleration parameter at a period ofzero seconds (peak ground acceleration for a rigid structure), %g.

Peak Ground Acceleration for Non-ASCE (Sp)- Defines SP, which is the design level peakground acceleration parameter for sites not addressed by ASCE methods.

Design Acceleration Parameter at Shor t Periods for ASCE Methods (Sds)- Defines SDS,which is the design, 5% damped, spectral response acceleration parameter at short periods (T =0.2 seconds) based on ASCE 7 methods, %g.

Spectral Acceleration Parameter at Zero Period (Sa0*)- Defines Sa0*, which is the 5%damped, design spectral response acceleration parameter at zero period based on site-specificprocedures, %g.

Spectral Acceleration Parameter at Any Period (Sa*)- Defines Sa*, which is the 5% damped,design spectral response acceleration parameter at any period based on site-specificprocedures, %g.


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Nozzle Stiffnesses

The Nozzle Stiffnessesdialog box (accessed by selecting Home > Input > Nozzle Stiffness

) lets you specify up to fifteen low tank nozzles. The data specification can include externalpiping loads from a pipe stress analysis, if available.

The data acquired from this dialog box is used to implement the rules of API-650Appendix P.

When the tank temperature value in the General Tank Data(on page21)is changed, the

software updates the Modulus of ElasticityandExpansion Coefficientvaluesautomatically. These values are obtained by interpolating the data provided in Table P-1 of

API-650.

If you check Use PVP-1279, TANK uses an alternate method to compute the nozzlestiffnesses. This alternate procedure is detailed in PVP-1279 and is valid for smaller tanks.

Nozzle Designation / Number- Defines a descriptive tag or number of the current nozzle. Thiscell is restricted to four characters and can contain letters and/or digits. Example entries for thiscell are:

NZ1 NA0A

NZ2 PGLG

NZ3

Nozzle Height above Bottom Plate- Defines the height of the nozzle centerline above thebottom plate.

Nozzle Outer Diameter- Defines the outer diameter of the nozzle.


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Delta Temperature- Defines the difference between the normal operating temperature and theinstallation temperature.

Modulus of Elasticity - Defines the modulus of elasticity. These values should be taken fromAPI-650 Table P-1, reproduced as follows:

Design Temp (deg F) Modulus (psi) Thermal Expansion (in/in/deg F)

70 29.5E6 -

200 28.8E6 6.67E-6

300 28.3E6 6.87E-6

400 27.7E6 7.07E-6

500 27.3E6 7.25E-6

The value of elastic modulus is automatically defined by the software when you change thedesign temperature on the general spreadsheet. You can change this value, if necessary.

If the bottom shell course is specified as Stainless Steel, then the modulus value for Table P-1 isnot used. Instead, the modulus value is obtained from Table S-6:

Design Temp (deg F) Modulus (psi)

100. 28.0E6

200. 27.4E6

300. 26.6E6

400. 26.1E6

500. 25.2E6


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Expansion Coefficient- Defines the value of the thermal expansion coefficient. These valuesshould be taken from API-650 Table P-1and are reproduced as follows:

Design Temp (deg F) Modulus (psi) Thermal Expansion (in/in/deg F)

70. 29.5E6 -

200. 28.8E6 6.67E-6

300. 28.3E6 6.87E-6

400. 27.7E6 7.07E-6

500. 27.3E6 7.25E-6

Design Temp (deg C) Modulus (MPa) Thermal Expans ion (mm/mm/deg C)

20. 203000 -

90. 199000 12.0

150. 195000 12.4

200. 191000 12.7

260. 188000 13.1

The value of expansion coefficient is automatically defined by the software (using internal,English, units) when you change the design temperature on the general spreadsheet. You canchange this value, if necessary.

Reinforcement on Shell or Nozzle?- Indicates where the nozzle reinforcement is located. This

entry is used to interpolate among the charts in API-650 Appendix P. If reinforcing on the shell isindicated, Appendix P makes the following assumptions:

The reinforcing pad thickness is equal to the shell thickness.

The pad diameter is twice the nozzle diameter.

These assumptions are implicit in the curves presented in Appendix P and are automatically considered by the software.

Nozzle RePad Thickness- Defines the thickness of the nozzle reinforcing pad, when it existsand when the software must consider it in calculations. If you specify a pad thickness in this box,the software uses the value to increase the thickness of the tank shell in all Appendix Pcalculations.

Specifying a repad thickness in this box can duplicate assumptions made byAppendix P, and it is not advised in most circumstances.

Appendix P of API-650 does not specify how to handle reinforcing pads. Referencesused when developing Appendix P indicate that when selecting the curves for reinforcing on theshell, you should automatically assume the nozzle has a pad with a thickness equal to the shellthickness.

Nozzle Weigh t- Defines the weight of this nozzle. The value is used in all weight computationsinvolving the shell.


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Appl ied External Rad ial Force- Defines the value of any applied radial force, acting on thenozzle. The value is used in plotting the interaction diagram of Appendix P.

Appl ied External Ci rcumferent ial Moment - Defines the value of any applied externalcircumferential moment acting on the nozzle. The value is used in plotting the interactiondiagram of Appendix P.

Appl ied External Longi tudinal Moment- Defines the value of any applied external longitudinalmoment acting on the nozzle. The value is used in plotting the interaction diagram of AppendixP.

Radial Layout Angle - Defines the angle at which the nozzle is to be placed radially in the tankshell.


Nozzle Inside Projection -Defines the length of the nozzle projecting inside of the tank.


Nozzle Outside Projection -Defines the length of the nozzle projecting outside of the tank.


Use PVP-1279 for Stif fness - Allows TANKto utilize an alternate method to compute nozzlestiffnesses. This alternate method is based on PVP (Pressure Vessel and Piping) paper 1279 -Stiffness Coefficients for Nozzles in API-650 Tanks, by Lengsfeld, Bardia, Taagepera,Hathaitham, LaBounty, and Lengsfeld.

This alternate method is based on the finite element analysis of a number of tanks, resulting inalternate curves and equations for the determination of tank nozzle stiffnesses.

Nozzle Thickness for PVP-1279- Displays a value defined in PVP-1279, but not actually usedin the computations.

RePad Outer Diameter for PVP-1279- Defines the outside diameter of the nozzle reinforcingpad, if any. This value is used to determine the vertical distance from the nozzle centerline to thepoint where the tank bottom has no influence on nozzle stiffness.

External Pressure

TheAPI 650 External Pressure (App V.)dialog box (accessed by selecting Home > Input >

External Pressure ) contains optional parameters necessary to evaluate the externalpressure capacity of the tank.

Specified External Pressure (Pe) - Defines the Specified External Pressure, Pe.


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Elastic Modulus of the Roof Plate Material - Defines the elastic modulus of the roof platematerial, E.

Al lowab le Compressive St ress for Bottom Sti ffener (Fc)- Defines the Bottom StiffenerAllowable Compressive Stress, fc, where fc= 0.4Fyof components considered for theintermediate and bottom stiffeners. However, fcneed not be less than 15,000 psi (103 MPa).

Smallest Allowable Tensile Stress fo r Top Stiff ener (Fc)- Defines the Top StiffenerAllowable Compressive Stress, fc, Where fc= 0.6Fyof components considered for the top endstiffener region. However, fcneed not be less than 20,000 psi (140 MPa).

Smallest Allowable Tensile Stress of roof , shell, and st iffeners (f)- Defines the MinimumAllowable Tensile Stress, f, of the roof plate material, the shell plate material, and the stiffenerring material at the maximum operating temperature.

Roof Dish Radius (if needed) (R)- Defines the Dish Radius of Roof, R. This value is onlyneeded for Dome and Umbrella roofs.

Inspection Data

The Inspection Datadialog box (accessed by selecting Home > Input>Inspection Data )specifies additional measurement data obtained from tank inspections. This measurement datacan be used to implement the shell and bottom checks discussed in API-653 Sections 4.3.3.1,4.3.3.2, and 4.4.7.1. The data for the service measurement analysis is organized on separatetabs.

Bottom, Post 3rd Ed. Tab(see "Bottom Post 3rd Ed. Tab"on page39)

Bottom, Pre 3rd Edition Tab(see "Bottom Pre 3rd Edition Tab"on page40)

Manual Shell Course Specification Tab(on page41)

Bottom Post 3rd Ed. Tab

The Bottom, Post 3rd Ed. tab defines the parameters necessary to evaluate the minimum

thickness for the tank bottom plate according to Section 4.4.7.1 of the 3rd Edition of API-653.

Minimum Remaining Thickness from Bottom Side of Corrosion after Repairs (RTbc)-Defines the value of the minimum remaining thickness from the bottom side corrosion, afterrepairs, according to API-653 Section 4.4.7.1.

Minimum Remaining Thickness from Internal Corrosion after Repairs (RTip)- Defines thevalue of the minimum remaining thickness from internal corrosion, after repairs, according to

API-653 Section 4.4.7.1.


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Anticipated In-Service Per iod of Operation (Or)- Defines the value of the anticipatedin-service period of operation (normally 10 years), according to API-653 Section 2.4.7.1.

Maximum Rate of Corrosion Not Repaired on the Top Side (StPr)- Defines the value of themaximum internal pitting rate, on a yearly basis. If the tank bottom is internally lined (per API RP652), this value should be specified as 0.0, according to API-653 Section 2.4.7.1.

Maximum Underside Pitti ng Rate (UPr)- Defines the value of the maximum rate of corrosion,on a yearly basis. If the tank bottom is cathodically protected (per API RP 651), this value shouldbe specified as 0.0, according to API-653 Section 2.4.7.1.

Bottom Pre 3rd Edition Tab

The Bottom, Pre 3rd Ed.tab displays the parameters necessary to evaluate the minimumthickness for the tank bottom plate, according to Section 2.4.7.1 of previous editions of API-653.

Average Depth of In ternal Pit ting (StPa)- Defines the average depth of the internal pitting ofthe bottom plates. This value is measured from the original thickness.

Maximum Depth of Underside Pitting (UPm) - Defines the maximum depth of underside

pitting of the bottom plates.

Average Depth of Underside Pi tt ing (UPa)- Defines the average depth of underside pitting ofthe bottom plates.

Original Plate Thickness (To)- Defines the original thickness of the bottom plates. This valueshould correspond to the bottom plate thickness entered on the Seismic Data Specifications (on page33)and the Grillage Review(on page56), if specified.

Average Depth o f Generall y Corroded Area (GCa) - Defines the value of the average depth ofthe generally corroded area, (GCa), according to API-653 Section 2.4.7.1.

Maximum Rate of General Corrosion (GCr)- Defines the value of the maximum rate ofgeneral corrosion, on a yearly basis, according to API-653 Section 2.4.7.1.

Max Depth Internal Pitting After Repair (StPm)- Defines the value of the maximum depth of

internal pitting remaining in the bottom plates after repairs are completed, according to API-653Section 2.4.7.1.

This value is measured from the original thickness.

Maximum Internal Pitting Rate (o if li ned) ( StPr)- Defines the maximum rate of corrosion notrepaired on the top side (StPr). StPr = 0 for coated areas of the bottom. The expected life ofthe coating must equal or exceed O

rto use StPr = 0.


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Maximum rate of corrosion on the bottom side (UPr) - Defines the value of the maximumrate of corrosion, on a yearly basis. If the tank bottom is cathodically protected (per API RP651), this value should be specified as 0.0, according to API-653 Section 2.4.7.1.

Anticipated In-Service Per iod of Operation (Or)- Defines the value of the anticipatedin-service period of operation (normally 10 years), according to API-653 Section 2.4.7.1.

Manual Shell Course Specification Tab

The Manual Shell Course Specifi cation tab defines the location of the critical length L, theinspection values of t1and t2, and a joint efficiency for each shell course. Additionally, controlsare provided to indicate which of these data entries should be considered in the current analysis.

If the joint efficiency is left blank, the value specified on the General Tank Datadialogbox is used. Similarly, if the Llocation is left blank, the fluid height will be determined from the

bottom of the course. If the t1or t2values are left blank, they default to the user-specifiedthickness on the General Tank Datadialog box.

E (Joint Effic iency)- Defines the value of the joint efficiency to be used in the thicknesscomputations of this shell course.

L (Location Above Course Bottom)- Defines the value that locates the bottom of the Lregion,above the bottom of this course.

Where Lis the critical length, the maximum vertical length over which the hoop stresses areassumed to "average out" around local discontinuities. In subsequent thickness computations,the fluid height to the design liquid level is measured from the bottom of L.

t1 (Lowest Average Thickness)- Defines the average thickness in the Lregion. If this value isleft blank, it defaults to the thickness defined in the General Tank Data(on page21)dialog box.

t2 (Minimum Thickness)- Defines the least thickness in any area of corrosion, exclusive ofpits. If this value is left blank, it defaults to the thickness defined in the General Tank Data(onpage21)dialog box.

Use specified shell " L" values?- Indicates whether the specified location Lis used insubsequent thickness calculations.


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If you select this check box, the software uses the user-specified values of the location of Lto be used in determining the height to the maximum design liquid level. When this box ischecked, the height value is computed according to API-653 Section 2.3.3.1.

If you clear this check box, the software ignores the user input values of the location of L insubsequent computations. The thickness computations use a height value measured from

the bottom of each course, which produces more conservative (thicker) thicknesses.Use specified shell "E" values?- Indicates whether the specified values of individual course

joint efficiencies are used in subsequent computations.

If you select this check box, the software uses the individual joint efficiencies for eachcourse in any subsequent computations. This may be useful if additional inspections andradiography are performed.

If you clear this check box, the software ignores the specified values of individual coursejoint efficiencies. Instead, the computations are made using the joint efficiency specified onthe General Tank Data dialog box.

Use specified shell " t1/t2" values?- Indicates whether the software uses the specified valuesof individual course thicknesses of t1 and t2 in subsequent computations.

If you select this check box, the software performs the thickness checks per API-6532.3.3.1. Values of t1 or t2 left blank will assume the thickness specified on the General TankData dialog box.

If you clear this check box, the software does not perform the thickness checks of API-6532.3.3.1.

Bottom Shell Course as Constructed - Defines the original thickness of the bottom shellcourse. This value is used to determine the minimum thickness of the annular base plate, per

API-653 Table 2- 3.

Roof Specifications

The Roof Specifications dialog box (accessed by selecting Home > Input > Roof

Specifications ) lets you specify the roof parameters. This dialog box is optional for tankinput.

The Roof Specification Parameters dialog boxis divided into three tabs:

General Roof Specs Tab -Specifies the overall geometry of the roof. Whenever a tank hasa roof to be designed, values for the top half of this dialog must be defined. For moreinformation, see General Roof Specs Tab(on page42).

Supported Cone Roof Data Tab -Defines the data necessary for supported cone roofdesign. For more information, see Supported Cone Roof Data Tab(on page46)

Girder Rings Tab -Specifies the location of each girder ring and how many girders makeup the ring. For more information, see Girder Rings Tab(on page52).

General Roof Specs Tab

Specifies the overall geometry of the roof. Whenever a tank has a roof to be designed, value forthe top half of this dialog must be defined. Determine whether a simple approximation will bemade, or a supported cone roof will be designed. The approximation requires the specification of


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the remaining data on the General Roof Specstab. This data is used in further analysis, suchas seismic analysis, wind over turning, and maximum allowed pressure.

General Roof Data

Roof Type- Specifies the roof type of the tank. You can choose from:

Supported Cone- The roof is supported by rafters, girders, and columns. For supportedcone roofs, the software designs the rafters, columns, and girders.

Rafter-Supported Cone- The roof is supported by rafters only. For rafter-supported coneroofs, the software designs the rafters.

Cone

Dome

Umbrella

The Cone, Dome, and Umbrellaroof types are considered solely for their weight effectson the shell.

Angle Between Roof & Hor izontal- Defines the angle between the roof and a horizontal planeat the roof/shell junction.

Net Area at Roof/Shell Junction- Defines the area resisting the compressive force. For moreinformation, refer to API-650 Figure F-2.

Thickness of Roof Plate- Defines the nominal thickness of the roof plates. This value shouldinclude the corrosion allowance, if any.


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Roof Plate Corrosion Allowance- Defines the corrosion allowance to be considered whendetermining the weight of the roof plates for Appendix F and overturning computations. Thisvalue is subtracted from the nominal roof plate thickness.

Roof Live Load- Defines the value to be used in computing the load supported by the roofplates. According to API-650 5.10.2.1, this value must be at least 20 pounds per square foot.

The dead load of the roof is computed by the software and combined with the live load todetermine the total roof load.

Weight of Snow on Roof - Defines the total weight of any snow on the roof to be considered inAPI-650 Appendix E computations for seismic checks.

If the supported cone roof design procedures are implemented, the software determinesthe load applied to the roof internally. This value will not be used.

Dome/Umbrella Roof Spherical Radius -Defines the total spherical radius for a dome orumbrella type of roof. If you do not specify this value, the software uses the tank inner radius asthe default value.

General Roof Data - No Design

Weight of Roof Plates- Defines the total weight of the roof plates to be considered in API-650Appendix E and Appendix F computations.

The software determines the weight of the roof plates internally. If the computed value isgreater than the input value specified here, or a supported cone roof is being designed, thecomputed value will be used in subsequent calculations. If the input value is greater, it will beused (unless a supported cone roof is being designed). For supported cone roofs, the computedroof plate weight is always used.

Weight of Roof Framing- Defines the total weight of the roof framing to be considered inAPI-650 Appendix E and Appendix F computations.

If the supported cone roof design procedures are implemented, then the softwaredetermines the weight of the roof framing internally. This value will not be used.

% of Weights Supported by Shell- Defines the percentage of the roof and snow weights thatare to be considered as supported by the shell for API-650 Appendix E checks.

If the supported cone roof design procedures are implemented, the software determinesthe % of weight supported by the shell internally. This value will not be used.

Net Area Scratchpad (F2)

Used to quickly determine the value for Net Area at Roof/Shell Junction. After the data has beendefined, click Compute. TANK calculates the net area at the roofshell junction and updates thevalue for Net Area at Roof/Shell Junction.

The data entered in the scratchpad is not saved.

Figure (a-k) Specifies the needed cross-section, corresponding to sketches a through k from

API-650, Figure F.2.

Thickness of Shell Plate (tc) - Specifies a pre-analysis estimate of the thickness of the topshell plate. After the analysis, the computed top course thickness replaces the estimate so thatthe correct area can be used in the roof calculations.

Thickness of Angle Leg (ta) - Specifies the angle thickness if the selected sketch (a-k)includes an angle.


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Thickness of Bar (tb) - Specifies the bar thickness in this field, if the selected shell (a-k)includes a bar.

Thickness of Thicker Plate (ts) - Specifies the thickness if the selected sketch (a-k) includes athickened region of the top shell course.

Unstiffened Angle Length (Le) - Specifies the un-stiffened angle leg if the selected sketch

(a-k) includes an angle.

Minimum Yield Strength (Fy) - Specifies the minimum yield strength of all of the materials inthe selected sketch.

Roof Section Types and Structural Databases

The following tables show the various structural databases and valid roof section types.

1989 AISC Library

DESCRIPTOR AISC SHAPE USAGE

W Wide Flange rafter, girder, column

WT Structural Tee rafter, girder, column

S Standard I Beam rafter, girder, column

C Channel rafter, girder, column

DC Double Channel columns only

DI Double Wide Flange columns only

P Pipe columns only

1990 Korean Library

DESCRIPTOR SHAPE USAGE

W Wide Flange rafter, girder, column


M Standard I Beam rafter, girder, column

1993 UK Library


UB Universal Beams rafter, girder, column

UC Universal Columns rafter, girder, column

T Structural Tee rafter, girder, column



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1991 German Library


I I-Beams rafter, girder, column

U Channel rafter, girder, column

T Structural Tee rafter, girder, column

1990 Australian Library


UB Universal Beams rafter, girder, column

UC Universal Columns rafter, girder, column

1990 South African Library


IP I-Beams rafter, girder, column

HP Wide flange beams rafter, girder, column

CP Channels, parallel rafter, girder, column

CT Channels, taper rafter, girder, column

Supported Cone Roof Data Tab

If a supported cone roof is to be designed, then values in the bottom half of General RootSpecstab should be left blank. The data necessary for supported cone roof design, accordingto the procedures outlined in the text by Brownell & Young, is specified on Supported ConeRoot Datatab.


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In the design of a supported cone roof, the roof plates sit on top of the rafters. The rafters areoriented along radial lines, from the center of the tank. The rafters are arranged in rings aroundthe tank, where the rafter lengths do not exceed the maximum specified value. The ends of therafters are supported on girders, arranged in concentric circles, where the girder lengths do notexceed the maximum specified value. The girders are supported by columns.

For the structural and roof plate materials, click to bring up the context menu whichallows selection from the Material Database.

Structural Data

Manual Usuario Intergraph TANK 2014

Documents

Transcript of Manual Usuario Intergraph TANK 2014