The HHS / TS Grades window ( Job Settings )

Shown here are the columns you get for the " ASD/ LRFD/ CISC " tab. You will get additional columns if the " AS4100 " or " Eurocode " tab is shown. Which of these tabs is shown depends on the selected " Connection design method ."
  • Warning 1: Use caution when changing the Fu and Fy values assigned to particular steel grades. The Fu and Fy values assigned to steel grades in the default Job Settings file are the correct ultimate strength and yield strength values for those grades. Changing Fu and Fy values affects connection design .
  • Warning 2: Changing any steel grade definition (for example, changing line 3) assigns the new definition to all materials that had been assigned the previous definition. Since a steel grade is assigned to a material by its line number (index), this means that if you switch line 3 with line 4, the steel grades of existing materials using those definitions will also be switched.
  • The grade entered to line 1 on this window is assigned by default to the first HSS/TS member Added after starting up Modeling . If, on the member edit window, you enter a different steel grade, each subsequently Added HSS/TS member is assigned that steel grade until you change the steel grade again or restart Modeling .
  • Line 1 applies to HSS/TS materials added using Add Material in the same way that it applies to members.
  • Cut ( Ctrl+x ), copy ( Ctrl+c ) and paste ( Ctrl+v ) are available to help you more quickly edit steel grades. You can also choose " Cut " " Copy " or " Paste " on the context menu that opens when you right-click a cell. See warning 2 .

Also see :

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Default settings by design code :

When ' ASD14 ' and ' LRFD 14 ' was selected as the " Design method " at project creation:

Tip: To get the " Design Thickness " to equal the " Wall thickness " for a particular HSS rectangular (or HSS round ) section size, just select ' ASTM 1085 ' as the steel grade. This tip, of course, assumes that you use the defaults for ' ASD14 ' or ' LRFD14 '.

The defaults for the HSS / TS Production Standards window are as shown here.
The defaults for the HHS / TS Grades window (this window) are shown here. Similar defaults appear on the Pipe Grades window.

To create a new project that has the HSS / TS Production Standards window filled out, by default, with AISC Steel Construction Manual, Fourteenth Edition production standards, Home > " Change Active Job " > " New ... ," then select ' ASD14 ' or ' LRFD14 ' as the " Design method ," while leaving other settings on the Create New Project window at their defaults. The HSS / TS Production Standards window, the Pipe Grades window, and the Steel Grade - HSS/TS window (this window) will all be filled out with appropriate default settings (like those shown above). The local shape file will be populated with pertinent " Structural Properties " information for production standards such as ASTM A1085.

When ' CISC10 ' was selected as the " Design method " at project creation :

Tip: To get the " Design Thickness " to equal the " Wall thickness " for a particular HSS rectangular (or HSS round ) section size, just select ' 350W-C ' or ' 350W-H ' as the steel grade. This tip, of course, assumes that you use the defaults for ' CISC10 '.

The defaults for the HSS / TS Production Standards window are as shown here.
The defaults for the HHS / TS Grades window (this window) are shown here. Similar defaults appear on the Pipe Grades window.

To create a new project that has the HSS / TS Production Standards window filled out, by default, with CISC Handbook of Steel Construction, Tenth Edition production standards, Home > " Change Active Job " > " New ... ," then select ' CISC10 ' as the " Design method ," while leaving other settings on the Create New Project window at their defaults. In the newly created project, the HSS / TS Production Standards window, the Pipe Grades window, and the Steel Grade - HSS/TS window (this window) will all be filled out with appropriate default settings (like those shown above). The local shape file will be populated with pertinent " Structural Properties " information for production standards such as CISC G40.20.

When any other " Design Method " is selected at project creation:

The HSS / TS Production Standards window will not be filled out with any information.
The default grades that appear on the HHS / TS Grades window will not have a production standard applied to them. Same for the Pipe Grades window.

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Step-by-step instructions :

1 . To open the HHS / TS Grades window, use one (1) of the following methods:

Method 1 : Home > Project Settings > Job > Material Grades > HHS / TS Grades .

Methods 2,3 & 4 : In Modeling or the Drawing Editor , choose Settings > Job Settings > HSS/TS Grades (classic), or use a keyboard shortcut , or click the icon.

2 . The Shear and Threaded Stud Grades window opens. Which tab is shown on the window depends on the " Connection design method " that you are using. For example, the " ASD/LRFD/CISC " tab is shown when ' LRFD13 ' is the " Connection design method ."

Tab Columns When Shown  
" ASD/LRFD/CISC "   " Line number " " Steel Grade " " Production Standard " " Nonstandard Notation " " Fy " " Fu " " Ry " " Rt " " n " shown when ' ASD13 ' or ' LRFD13 ' or ' CISC8 ' or ' CISC9 ' or ' ASD9 ' or ' LRFD3 ' or ' ASD1 ' or ' LRFD14 ' or ' CISC10 ' is the " Connection design method ."
" AS4100 " " Line number " " Steel Grade " " Nonstandard Notation " " Fy " " Fu " " Minimum Thickness " " Maximum Thickness " shown when ' AS 4100 ' is the " Connection design method ."
" Eurocode " " Line number " " Steel Grade " " Nonstandard Notation " " Fy " " Fu " " Minimum Thickness " " Maximum Thickness " " Correlation Factor " shown when ' EUROCODE3 ' or ' EUROCODE3 UK ' is the " Connection design method ."

3 . Before making any changes to this window, see Warning 1 and Warning 2 . To add a new steel grade, fill out the columns for the first blank line (press the Tab key or Shift + Tab to move from cell to cell). The type of information that may be entered beneath a particular column on this window is explained below:

Line number: The index number (a positive integer) of the steel grade -- see Warning 2 . Line 1 sets the default steel grade and is the standard steel grade that may be referenced when Home > Project Settings > Fabricator > Member and Material Piecemarking > the " Submaterial " tab > " Show non-std grade notation with piecemarks on member details " is checked

Steel Grade: Any text string (up to 29 characters) to denote the name of the steel grade (e.g., A36 , A401 , Peter , Joe , whatever name you want). Steel grades entered here are selectable ( ) in Modeling wherever a HSS/TS section is entered as the " Section size ." You can, for instance, select these steel grades on the Rolled Section Material or Column Edit or Vertical Brace Edit windows.

Production Standard (" ASD/LRFD/CISC ") : The name of any production standard that has been set up in Job Setup > HSS / TS Production Standards . When the steel grade from this window ( HHS / TS Grades ) is applied in Modeling to a specific HSS rectangular or TS section (selected from the local shape file ), the " Production Standard " associated with the user-selected steel grade sets the " Design Thickness " of the HSS rectangular (or TS) section.

A special case: The " Design Thickness Ratio " from the HSS / TS Production Standards window will be used to calculate specific " Structural Properties " that are used by connection design when no tabulated value (book value) is available in the local shape file.

Tip: For the ' ASD14 ' or ' LRFD14 ' or ' CISC10 ' " Design method ," assuming that this window ( and related windows ) are set up with the appropriate defaults , you can get connection design's " Design Thickness " to equal the " Wall thickness " by selecting ' ASTM 1085 ' (ASD/LRFD) as the steel grade for a particular HSS rectangular (or TS) section size. The same result for ' CISC10 ' can be achieved by selecting ' 350W-C ' or a ' 350W-H ' steel grade, since those grades are, by default, assigned the CISC G40.20 production standard.

Nonstandard Notation: Any text string (up to 29 characters) to denote that a particular steel grade is not the standard steel grade.

For member main material: This " Nonstandard Notation " string may be made to appear as a part of the section size of a member whose main material is HSS/TS steel. In a Modeling erection view, the notation appears when " Section sizes " are shown and the " Denote non-standard material " setup option is turned on. To get the annotation on an erection view drawing, you need to check the box for " Denote non-standard material " when you auto detail the erection view. Example 1: Enter * as the " Nonstandard Notation " for all lines but the first line if you wanted section sizes for HSS/TS member main materials with nonstandard steel grades to be marked with a * . Example 2: Enter (A588) for A588 steel if you want (A588) to be displayed in the model next to the member's section size when ' A588 ' is selected ( ) as the member's " Steel grade ."

For submaterials: A callout is generated next to that material's submaterial piecemark callout on the member detail when Home > Project Settings > Fabricator > Member and Material Piecemarking > the " Submaterial " tab > " Show non-std grade notation with piecemarks on member details " is checked. The callout will consist of the steel grade if you do not enter a " Nonstandard Notation ." If, on the other hand, a " Nonstandard Notation " has been entered, that notation would be called out instead of the steel grade. For example, you might enter Non Std as a " Nonstandard Notation ."

Minimum Thickness & Maximum Thickness (" AS4100 " and " Eurocode ") : These columns let you assign Fy (yield strength) and Fu (ultimate strength) values to a particular steel grade based on the wall thickness of the HSS/TS material.

Fy: The yield strength of the steel grade. If you are using imperial dimensioning, yield strength is measured in kips/sq. inch (ksi). If you are using metric dimensioning, yield strength is in megapascals (MPa). The value you enter for Fy is used to design connections.

Fu: The ultimate strength of the steel grade. If you are using imperial dimensioning, ultimate strength is measured in kips/sq. inch (ksi). If you are using metric dimensioning, ultimate strength is in megapascals (MPa). The value you enter for Fu is used to design connections.

Ry (" ASD/LRFD ") : The ratio (no units) of expected yield stress to the specified minimum yield stress, Fy. See section I-6 of the AISC Seismic Design Manual . This overstrength factor is used during connection design for calculations related to member strength when the user has specified a " Seismic brace " (vertical brace). The default values used for " Ry " come from Table I -6 -1 of the AISC Seismic Design Manual . " Ry " is used only when the governing load (" Tension load " or " Compression load ") is " Auto ." " Ry " and " Rt " are not used for user-entered loads.

Rt (" ASD/LRFD ") : The ratio (no units) of the expected tensile strength to the specified minimum tensile strength, Fu, as related to overstrength in material yield stress Ry. See section I-6 of the AISC Seismic Design Manual . This overstrength factor is used during connection design when the user has specified a " Seismic brace ." The default values used for " Rt " come from Table I -6 -1 of the AISC Seismic Design Manual . " Rt " is used only when the governing load (" Tension load " or " Compression load ") is " Auto ." " Ry " and " Rt " are not used for user-entered loads.

n (" ASD/LRFD/CISC ") : A factor (no units) used to evaluate flexural buckling of HSS columns. See clause 13.3.1 of the CISC Handbook of Steel Construction . This applies when the " Connection design method " is ' CISC8 ' or ' CISC9 ' or ' CISC10 '.

Correlation Factor (" Eurocode ") : The appropriate correlation factor (ß w ) taken from Table 4.1 in BS EN 1993-1-8: 2005, " Eurocode 3: Design of steel structures ." The factor is used in calculations for fillet welds.

4 . When you are done making changes to the HHS / TS Grades window, use the buttons at the bottom of this window to reorder listings on the window or close the window or undo your changes.

       

"Move Up" or "Move Down" changes the order of items on the window. Warning!! If you move a steel grade to a line number whose steel grade has already been assigned to materials in your current Job, when you press " OK " those materials are assigned the newly moved steel grade -- see Warning 2 .

"OK" (or the Enter key) closes the window and saves the settings on it to the Job Settings file in your current Job . See Warning 1 & 2 .

"Cancel" (or the Esc key or the button) closes the window without saving any changes made to it.

"Reset" undoes all changes made to this window since you originally opened it. The window remains open.

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