The Bolt Settings window ( Job Settings )
- To open this window
- " OK " " Cancel " " Reset "
Also see :
- Bolt Settings (sets available bolts)
- Connection design (settings on this window are applied during)
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To open Bolt Settings :
Method 1 : Home > Project Settings > Job > Bolts, Washers, and Holes > Bolt Settings .
Methods 2, 3 & 4 : In Modeling or the Drawing Editor , choose Settings > Job Settings > Bolt Settings (classic), or use a keyboard shortcut , or click the icon.
Password protection: If a password has been set using the Change Setup Password utility, you can open this window only if you first enter that exact password.
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------ Default bolt criteria ------
Settings under this heading apply to the design of connections when "  Auto " is checked for either moment or non-moment bolts.
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Bolt diameter: The default diameter (inches or mm) of the shanks of the bolts to be used for fastening non-moment connection materials to structural members. You can either type in a diameter or select a bolt diameter from the combo box (
). The diameters that are listed come from the " Available bolt diameters " list on this window.
diameter 
Note 1: The bolt diameter entered here is the default for connections and also determines which holes are identified on details when the box for " Show nonstandard hole sizes on detail drawings " is checked.
Note 2: When creating a non-moment, non-auto-standard connection other than a brace gusset plate, connection design determines the minimum bolt diameter from the value that is entered here or, if applicable, from the " Bolt Diameter " entered for structural members or from the " Bolt Diameter " entered for single-plate shear connections (it uses whichever value is largest). If loading conditions necessitate that connection design use a bolt diameter larger than the minimum, connection design uses one of the " Available imperial bolt sizes " or " Available metric bolt sizes ."
Note 3: Connection design calculates hole diameter from the input bolt diameter per the selected " Connection design method ." For AISC design codes, this calculation is per AISC Table J3.3 or Table J3.3M ( Thirteenth Edition , p. 16.1-105).
Apply to all auto-standard connections:
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If this box is checked (
If this box is not checked (
Bolt type: A325N or A325SC or A325X or F1852N or F1852SC or F1852X or any other bolt listed in the Bolt Settings . This is the default bolt type for fastening non-moment connection materials to structural members. On member edit windows, the " Bolt type " selected here is automatically used in the design of non-moment connections when the " NM bolt type to supported " (beam) or " NM bolt type to supporting " (beam) or " NM bolt type " (column) or " NM bolt type " (horizontal brace) or " NM bolt type " (vertical brace) or " NM bolt type " (joist) is set to "
Tip: One way to get connection design to create non-moment connections with TC bolts is to select one of the " F1852 " bolt types. In Washer Settings , the option to " Use tension control (TC) bolts " is checked (
Apply to all auto-standard connections:
If this box is checked (
If the box is not checked (
Bolt diameter: The default diameter (inches or mm) of the shanks of the bolts to be used for ' Bolted ' moment flange plates and angles, moment flange splice plates, and moment end plates. In other words, this sets the "
Moment " leaf on the Beam Edit window.
diameter You can either type in a diameter or select a bolt diameter from the combo box (
Bolt type: A325N or A325SC or A325X or etc. The default bolt for moment flange plates and angles, moment flange splice plates, and moment end plates. In other words, this sets the "
Bolt types on this list box (
Vertical brace gusset to supporting :
Bolt diameter: The diameter of bolts in both legs of the clip angle that fastens the vertical brace gusset to the supporting member. The bolts are made this diameter when the " Bolt diameter " is set to "
diameter 
Bolt type: A325N or A325SC or A325X or etc. This is the default bolt type for the gusset and to the supporting member. The selection made here applies when the " Bolt type " is set to "
Horizontal brace gusset to supporting :
Bolt diameter: The diameter of bolts in both legs of the clip angle that fastens the horizontal brace gusset to the supporting member. This diameter is applied when the " Bolt diameter " is set to "
diameter
Bolt type: A325N or A325SC or A325X or etc. This is the default bolt type for fastening the clip angle to both the gusset and to the supporting member. The selection made here applies when the " Bolt type " is set to "
K or KCS or LH or DLH or SLH or G or BG or VG or CJ joist bolts .
Bolt diameter: The diameter (inches or mm) of bolts per joist type (K or KCS or LH or DLH or SLH or G or BG or VG or CJ). You can either type in a diameter or select a bolt diameter from the combo box (
diameter This diameter applies when, on the Joist Edit window, a K or KCS or LH or DLH or SLH or G or BG or VG or CJ joist has been entered as the " Section size " and the box for "
Example: CJ joists become available when the " Joist manufacturer " is ' Vulcraft '. When their connection type is a flush framed joist connection, they -- as well as other types of joists with flushed framed joist connections -- will be assigned the auto bolt diameter that is specified, on this window, under " Flush framed joist connections ." When a CJ joist has a bearing connection or seated connection, the auto bolt diameter used in that connection will be the " Bolt diameter " that is specified here, under " CJ joist bolts ."
Bolt type: A325N or A325SC or A325X or etc. This is the default bolt type to be used for K or KCS or LH or LH or DLH or SLH or G or BG or VG joists. Bolt types on this list box (
Effect on connection design: The bolt type selected here applies when, on the Joist Edit window, a K or KCS or LH or DLH or SLH or G or BG or VG or CJ joist has been entered as the joist's " Section size " and "
Flush framed joist connections :
Bolt diameter: The diameter (inches or mm) of bolts to be used when a joist " Input connection type " is ' Flush framed shear ' or ' Flush framed clip angle ' and when the box for "
diameter Example: If you enter, on this window, one bolt diameter for " K joist bolts " and a different bolt diameter for " Flush framed joist connections ," the actual auto bolt diameter that is applied by connection design will depend on the connection type. If the end connection is a bearing connection or seated connection, the auto bolt diameter will be the bolt diameter for " K joist bolts ." If the end connection is a flush framed connection, the auto bolt diameter will be the choice made here, under " Flush framed joist connections ."
Bolt type: A325N or A325SC or A325X or etc. The default type to be applied when a joist " Input connection type " is ' Flush framed shear ' or ' Flush framed clip ' and the box for "
HSS welded brace erector bolts :
Bolt diameter: The diameter (inches or mm) of erection bolts that connection design will create when an HSS vertical brace " Pipe/tube end-fitting " or HSS horizontal brace " Pipe/tube end fitting " is set to ' Welded ' and the " NM bolt diameter " (vertical brace) or " NM bolt diameter " (horizontal brace) is set to "
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Bolt type: A307 or etc. The choice made here is applied, by connection design, when an HSS vertical brace " Pipe/tube end-fitting " or HSS horizontal brace " Pipe/tube end fitting " is set to ' Welded ' and the " NM bolt type " (vertical brace) or " NM bolt type " (horizontal brace) is set to "
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------ Default bolt class ------
Make all bolts: Automatic or Field or Shop .
If ' Automatic ' is selected, the class of bolts is determined based on the following criteria: If the bolt fastens together materials that are submaterials of the same member, that bolt is a shop bolt. If the bolt fastens together materials that are submaterials of different members, that bolt is a field bolt.
If ' Field ' is selected, ' Field ' is assigned as the " Bolt class " to all bolts that fasten to that member. You can override this behavior: If, on the Bolt Edit window you change the " Bolt class " to ' Shop ', your change is preserved through Process and Create Solids regardless of the choice made here.
If ' Shop ' is selected, ' Shop ' is assigned as the " Bolt class " to all bolts that fasten to that member. You can override this behavior: If, on the Bolt Edit window you change the " Bolt class " to ' Field ," your change will be preserved through Process and Create Solids regardless of the choice made here.
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------ Maximum bolt gaps ------
Field bolt gap: The maximum gap (in the primary dimension " Units " or other units ) that you want to allow between materials with matching holes that are designated to be bolted together with field bolts .
Effect on solids creation: Create Solids automatically adds field bolts to materials with matching holes that are closer together than the maximum gap entered here. For gaps that are larger than the maximum specified here, Add Bolts gives you the option to exceed the gap.
Shop bolt gap: The maximum gap (in the primary dimension " Units " or other units ) that you want to allow between materials with matching holes that are designated to be bolted together with shop bolts .
Effect on solids creation: Create Solids automatically adds shop bolts to materials with matching holes that are closer together than the maximum gap entered here. For gaps that are larger than the maximum specified here, Add Bolts gives you the option to exceed the gap.
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------ Bolt stick-through ------
Minimum bolt length: The minimum length (in the primary dimension " Units " or other units ) of bolt that you want to be used in this Job.
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Effect on connection design: Bolts cannot be generated if they are shorter than the minimum length you enter here. This prevents bolts that are too short from being used in your current Job.
Note: Head thickness is not included in its calculation of bolt length because head thickness may vary among bolt manufacturers. Bolt length is calculated based on the thickness of the materials into which the bolt is inserted, the minimum amount of bolt stick through, nut thickness and washer thickness.
Minimum stick-through: The minimum distance (in the primary dimension " Units " or other units ) that you want the bolt to stick through the nut after it has been fastened through the materials. Since bolt lengths come in increments of .25 inch (5 mm for metric bolts), the entry you make here should be at least .25 inch (or 5 mm) less than the " Maximum bolt stick through ." Otherwise, the minimum and maximum settings may be in conflict when connection design sets the bolt length.
s = stick through
Example: Suppose a 3-inch bolt has a stick through of 1/16 inch before connection design adjusts its length to comply with the minimum and maximum settings on this window. The " Minimum stick through " is set to ' 1/8 inch ' and the " Maximum stick through " is set to ' 1/4 inch' . Even though the current stick through is less than the minimum, the bolt length is not increased to 3 1/4 inch because the stick through would be 5/16 inch, which is greater than the maximum stick through.
Maximum stick-through: The maximum distance (in the primary dimension " Units " or other units ) that you would like the bolt to stick through the nut after it has been attached through the materials. Since bolt lengths come in increments of .25 inch (5 mm for metric bolts), the entry you make here should be at least .25 inch (or 5 mm) greater than the " Minimum stick through ." Otherwise, the minimum and maximum settings may be in conflict when connection design sets the bolt length.
s = stick through
Example: Suppose a 3-inch bolt has a stick through of 1/16 inch before its length is adjusted to comply with the minimum and maximum settings on this window. The " Minimum stick through " is set to '1/8 inch ' and the " Maximum stick through " is set to ' 1/4 inch '. Even though the current stick through is less than the minimum, the bolt length is not increased to 3 1/4 inch because the stick through would be 5/16 inch, which is greater than the maximum stick through.
Imperial bolt lengths in 1/2 inch increments: or .
If this box is checked (
), connection design applies imperial bolt lengths in 1/2 inch increments. Also, validation takes place for " Bolt length " on the Bolt Edit window to prevent lengths that are not whole-number multiples of 1/2 inch from being entered. If this box is checked, you may want to also check the box for " Add washers to prevent shank-out when needed ."
If the box is not checked (
Tip: If you change this setting, you may also need to adjust the " Minimum bolt length " and " Minimum stick through " and " Maximum stick through " to appropriate settings.
Metric bolt lengths in 10 mm increments: or .
If this box is checked (
If the box is not checked (
Add washers to prevent shank-out: or . Thread length on bolts is set for imperial A325 and A490 bolt sizes per AISC Table C-2.1 ( Thirteenth Edition , p. 16.2-10).
If this box is checked (
If the box is not checked (
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------ Available bolt diameters ------
| Bolt incrementation: Bolt diameters that are checked ( ) here are available to connection design when it increments bolt diameters upward in order to get a connection of sufficient strength. Incrementing of bolt diameters may be done for clip angles , shear connections, end plates , bent plates , AISC moment end plates and splice plates on beams, and for splices on columns. Bolt diameters can also be incremented on brace gusset plates and gusset clip angles when, for example, " Rows " and " Columns " are locked . Connection design does not increment bolt diameters on moment flange plates.
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| Selectability for modeling: Bolt diameters that are checked ( ) here are listed on every combo box ( ) for " Bolt diameter " throughout your current Job. See the tip below.
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Both imperial & metric or Imperial or Metric : The type of bolts for which you want bolt diameters to be available for bolt incrementation (as described above ).
| Both imperial & metric : |
| Bolt tabs for clip configurations are in units that match the primary dimensioning " Units ." |
| Imperial : |
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| Metric : |
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' Both . . . ' lets the user select both " Available imperial bolt sizes " and " Available metric bolt sizes " in the same Job. When connection design attempts to increment bolts , it may select either imperial or metric sizes. Bolt tabs for clip configurations are in units that match the primary dimensioning " Units ."
' Imperial ' instructs connection design to use only " Available imperial bolt sizes " when incrementing bolt sizes to meet loading conditions. This is commonly the selection when ' Imperial ' primary dimensioning " Units " are used. In setup, bolt tabs for clip angle configurations such as the Single, Bolted configurations will be in inches.
' Metric ' instructs connection design to use only " Available metric bolt sizes " when incrementing bolt sizes to meet loading conditions. This is commonly the selection when ' Metric ' primary dimensioning " Units " are used. In setup, bolt tabs for clip angle configurations such as the Single, Bolted configurations will be in millimeters.
Tip: You can type in any metric or non-metric bolt diameters to " Bolt diameter " fields regardless of the selection you make here. The selection made here only sets which bolts can be selected on the combo box (
Imperial: None or 1/4 and/or 3/8 and/or 1/2 and/or 5/8 and/or 3/4 and/or 7/8 and/or 1 and/or 1 1/8 and/or 1 1/4 and/or 1 3/8 and/or 1 1/2 and/or 1 3/4 and/or 2 and/or 2 1/2 . These options are available when ' Imperial ' or ' Both ' is selected. Connection design references this list for incrementing bolts when the " NM Bolt diameter " (or moment " Bolt diameter ") is an imperial size.
When the box for a particular bolt diameter is checked (
If the box for a bolt diameter is not checked (
Example: You do not select 1/2-inch bolts here, but on the Beam Edit window you enter a " NM bolt diameter " of ' 1/2 '. If a 1/2-inch bolt works for that connection, then connection design uses a bolt of that diameter. If a 1/2-inch bolt does not stand up to the load, connection design tries the next available larger imperial size to see if it works. If no larger bolt size is found, connection design may fail the connection or may, for example, attempt to increase the number of bolt rows to get a connection that works.
Metric: None or selected diameters from 12 mm to 40 mm . This option is only valid if ' Metric ' or ' Both ' is selected above. Connection design references this list for incrementing bolts when the " NM bolt diameter " (or moment " Bolt diameter ") is a metric size.
When the box for a particular bolt diameter is checked (
If the box for a bolt diameter is not checked (
Example: You do not select 16-mm bolts here, but on the Beam Edit window you enter a " NM bolt diameter " of ' 16 '. If a 16-mm bolt works for that connection, then connection design uses a bolt of that diameter. If a 16-mm bolt does not work, connection design tries the next available larger metric size to see if it works. If no larger bolt size is found, connection design may fail the connection or may, for example, attempt to increase the number of bolt rows to get a connection that works.
Hole allowances based on: Job units or Bolt units . This controls the increment that is used for sizing holes based on a bolt's diameter. The imperial increment is 1/16 inch. The metric increment is 2 mm. See AISC Table J3.3 and Table J3.3M ( Fourteenth Edition , pp 16.1-120 and 16.1-121).
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' Job units ' results in the 1/16 inch increment being used for all bolts (imperial or metric) when the primary dimension " Units " is ' Imperial '. When the units is ' Metric ', the increment of 2 mm is used for all bolts. Metric bolts that are used in a Job where the primary dimension units is ' Imperial ' will always have their holes sized less than than the 2 mm increment for metric since 1/16 inch is equal to 1.5875 mm.
' Bolt units ' results in the 1/16 inch or 2 mm increment being used based on whether the bolt is an imperial bolt or a metric bolt. If the bolts are imperial bolts, the 1/16 inch increment is used. If the bolts are metric bolts, the 2 mm increment is used. Be aware that when the primary dimension " Units " is ' Metric ', conversion to mm and rounding can cause the hole size for certain imperial bolt sizes to be 1 mm smaller than you might expect given the 2 mm metric increment.
Hole diameters match primary units: or . This affects the hole diameters that connection design generates for bolts that have diameters in units other than the primary dimension " Units ."
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If this box is checked (
If the box is not checked (
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------ AISC and CISC bolt settings------
AISC 13th edition limit state for slip-critical bolt design: This applies when ' ASD13 ' or ' LRFD13 ' is the " Connection design method " and the " Connection Method " assigned to a bolt (in Job Setup > Bolt Specifications > the " AISC 13th " tab > ) is ' Slip Critical '. Refer to the AISC 13th Edition , Section J3.8. Connection design uses equation J3-4 on pg 16.1-109 for slip-critical bolt design.
' Design as stated in J3.8 ' instructs connection design to design slip-critical bolts for serviceability when a bolt fastens through a standard round hole or through a slot that is transverse to the load, but to design for strength on a bolt through an oversized hole or a slot parallel to the load.
' Design all bolts with slip as a serviceability limit state ' instructs connection design to design all slip-critical bolts for serviceability.
' Design all bolts to prevent slip at the required strength level ' instructs connection design to design all slip-critical bolts for strength.
Use smaller standard round hole sizes for lage bolts: or . This applies when ' ASD15 ' or ' LRFD15 ' is the " Connection design method " ; the bolt diameter ( d ) is 1 inch or greater; and the " Hole type " is set to ' Standard round ', ' Short slot ',
' Long slot ', or ' Erection pin hole '. The AISC 15th edition increased the standard hole diameter for large bolts (1 inch diameter and greater) from d +1/16 inch to d +1/8 inch (ref. Table J3.3). This setting allows you to use an AISC 15th edition " Connection design method " with d +1/16 inch standard hole diameter for large bolts. This setting is disabled when " Available bolt diameters " is set to ' Metric ' because the metric standard hole diameters did not change in the AISC 15th edition.
If this box is checked (
If the box is not checked (
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------ Default bolt edge distances ------
Bolt diameter: 1/4 or 3/8 or 1/2 or 10 or 11 or 12 or any other selected bolt diameter. When you select a bolt diameter, you get entry fields for setting the minimum edge distance per hole type.
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| " User slot #1 " and " User slot #2 " are slots that are defined by users (or by default) in Project Settings . |
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To close Bolt Settings :
"OK" (or the Enter key) closes the Bolt Settings window and saves the settings on it to the Job Settings file in your current Job .
Note: If you have made changes to this window after having added members to the 3D model, you should interactively mark for processing (or Process Selected ) all members in your current Job, then Process and Create Solids in order to ensure design consistency throughout the Job.
"Cancel" (or the Esc key or the
button) closes this window without saving any changes made to it.
"Reset" undoes all changes made to this window since you first opened it. The window remains open.
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