The Bolt Specifications setup window ( Job Settings ) (read-only)
- Users of your current Job in a full-featured SDS2 program can use this window to add new bolt types to the Job. The newly added bolt types will then be selectable wherever selection options for bolt types exist in that Job (example: " Default non-moment bolt type for this job ").
Also see :
- Washer Settings (washers assigned to bolt type entered here)
- Bolt Settings (type assigned to default situations)
- Hole Edit window (bolt types are assigned on)
- Bolt Type (type assigned to individual beam connections)
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To open the Bolt Specifications :
Method 1 : Home > Project Settings > Job > Bolts, Washers, and Holes > Bolt Specifications .
Methods 2, 3 & 4 : In Modeling or the Drawing Editor , choose Settings > Job Settings > Bolt Specifications (classic), or use a keyboard shortcut , or click the icon.
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| AISC 13th | Australian | Canadian | ASD 9th | LRFD 3rd | Eurocode |
 tells you the units for " Shear " and " Tension ." Bolts defined under this tab apply when ' ASD13 ' or ' LRFD13 ' is the " Connection design method. " Values entered here are used for bearing type bolts per equation J3-1 on pg 16.1-108 of the AISC Steel Construction Manual , Thirteenth Edition . For slip-critical bolts, see equation J3-4 on pg 16.1-109.
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Bolt: Any character string ( up to nine characters ) to designate the name of the bolt type. Any bolt defined here is selectable for bolt type settings throughout the Job (for example, " NM bolt type to supported ").
Material: A307 or A325 or A490 or F1852 or F2280 are the material types filled out on this table in the default Job Options. Any other materials that may appear on this window have been added by users of a full-featured SDS2 program .
The default bolt set: A325/F1852 and A490/F2280 are materials that are suitable for high strength connections. A307 is material for "soft bolts" and is used for " Erection bolts ."
Restrictions: A material other than A325/F1852 or A490/F2280 that is used for bolts in a moment end plate causes failure of the connection and produces the error message: " Design valid only for A325/F1852 or A490/F2280 bolts ." For a shear plate, you get the error message: " Design valid only for A325 or F1852 bolts " if material other than A325/F1852 is used for the bolt.
Connection Method: Bearing Threads INC or Bearing Threads EXC or Slip Critical .
' Bearing Threads INC ' is for a bearing-type connection with threads included in the shear plane.
' Bearing Threads EXC ' is for a bearing-type connection with threads excluded from the shear plane.
' Slip Critical ' is for bolts in slip-critical connections. Connection design uses the " AISC 13th edition limit state for slip-critical bolt design " that is set in Bolt Settings when designing slip-critical bolts.
Surface Class: A or B . This applies when the selected " Connection Method " is ' Slip Critical '.
Class ' A ' has a Slip Coefficient of 0.35 and applies to uncoated clean mill scale steel surfaces and blast-cleaned steel surfaces with Class A coatings.
Class ' B ' has a Slip Coefficient of 0.50 and applies to uncoated blast-cleaned steel surfaces and blast-cleaned steel surfaces with Class B coatings.
---- Hole Factors, hsc ----
(apply to ' Slip Critical ' bolts only)
Standard: The hole factor ( hsc ) for calculating the nominal slip resistance ( Rn ) for the bolt being defined when it is used in a standard round hole in a slip-critical connection. See equation J3-4 .
Oversized: Same as " Standard ," except that this applies to oversized holes.
Short Slot: Same as " Standard ," except that this applies to short slots.
Long Slot: Same as " Standard ," except that this applies to long slots.
Shear (Fnv): The nominal shear stress ( Fnv ) for the type of bolt being defined (in ksi or MPa, depending on the primary dimension " Units ").
AISC Thirteenth Edition: The default values entered here are from Table J3.2 on page 16.1-104.
Tension (Fnt): The nominal tensile stress ( Fnt ) for the type of bolt being defined (in ksi or MPa, depending on the primary dimension " Units ").
AISC Thirteenth Edition: The default values entered here are from Table J3.2 on page 16.1-104.
Nut Grade: Any grade that has been entered to the Nut and Washer Schedule may be shown here. Line 1 on the Washer and Nut Schedule sets the default grade.
In a full-featured SDS2 program , when connection design creates a single heavy hex nut on the bolt, it applies the grade that is selected here as the " Primary nut grade ."
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| AISC 13th |
AISC 14th |
Australian | Canadian | ASD 9th | LRFD 3rd | Eurocode |
| tells you the units for " Shear " and " Tension ." Bolts defined under this tab apply when ' ASD14 ' or ' LRFD14 ' is the " Connection design method. "
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Bolt: Any character string ( up to nine characters ) to designate the name of the bolt type. Any bolt defined here is selectable for bolt type settings throughout the Job (for example, " NM bolt type to supported ").
Material: A307 or A325 or A490 or F1852 or F2280 are the material types filled out on this table in the default Job Options setup file. Any other materials that may appear on this window have been added by users.
The default bolt set: A325/F1852 and A490/F2280 are materials that are suitable for high strength connections. A307 is material for "soft bolts" and is used for " Erection bolts ."
Restrictions: A material other than A325/F1852 or A490/F2280 that is used for bolts in a moment end plate causes failure of the connection and produces the error message: " Design valid only for A325/F1852 or A490/F2280 bolts ." For a shear plate, you get the error message: " Design valid only for A325 or F1852 bolts " if material other than A325/F1852 is used for the bolt.
Connection Method: Bearing Threads INC or Bearing Threads EXC or Slip Critical . AISC 14th Edition: Values entered here are used for bearing type bolts per equation J3-1 on pg 16.1-125 of the AISC Steel Construction Manual , Fourteenth Edition . For slip-critical bolts, connection design calculates the strength limit state using equation J3-4 on pg 16.1-126.
' Bearing Threads INC ' is for a bearing-type connection with threads included in the shear plane.
' Bearing Threads EXC ' is for a bearing-type connection with threads excluded from the shear plane.
' Slip Critical ' is for bolts in slip-critical connections. For ' Slip Critical ' bolts, you also have to enter a " Surface Class ."
Surface Class: A or B . This applies when the selected " Connection Method " is ' Slip Critical '.
Class ' A ' has a Slip Coefficient of 0.30 and applies to uncoated clean mill scale steel surfaces and blast-cleaned steel surfaces with Class A coatings.
Class ' B ' has a Slip Coefficient of 0.50 and applies to uncoated blast-cleaned steel surfaces and blast-cleaned steel surfaces with Class B coatings.
Shear (Fnv): The nominal shear stress ( Fnv ) for the type of bolt being defined (in ksi or MPa, depending on the primary dimension " Units ").
AISC Fourteenth Edition: The default values entered here are from Table J3.2 on page 16.1-120.
Tension (Fnt): The nominal tensile stress ( Fnt ) for the type of bolt being defined (in ksi or MPa, depending on the primary dimension " Units ").
AISC Fourteenth Edition: The default values entered here are from Table J3.2 on page 16.1-120.
Nut Grade: Any grade that has been entered to the Nut and Washer Schedule may be shown here. Line 1 on the Washer and Nut Schedule sets the default nut grade.
When connection design applies a heavy hex nut to the primary position on bolt, it uses the grade that is selected here as the " Primary nut grade ."
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| AISC 13th |
AISC 15th
|
Australian | Canadian | ASD 9th | LRFD 3rd | Eurocode |
| tells you the units for " Shear " and " Tension ." Bolts defined under this tab apply when ' ASD15 ' or ' LRFD15 ' is the " Connection design method. "
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Bolt: Any character string (up to 9 characters) to designate the name of the bolt type. A bolt defined here becomes selectable ( 
) on list boxes for bolt type throughout your current Job (for example, as the " NM bolt type to supported ").
Allowable entries: The bolt type name entered here can be any name you like (Fred, Louise, Harvey). It is a good idea to only add bolts that are recognized within the industry as having particular properties suitable for use in steel construction.
Material: A307 or A325 or A490 or F1852 or F2280 are the material types filled out on this table in the default Job Settings file. Any other materials that may appear on this window have been added by users.
The default bolt set: Connection design recognizes A325/F1852 and A490/F2280 as materials for high strength connections. A307 material is recognized as material for "soft bolts" and used for " Erection bolts ."
Restrictions: A material other than A325/F1852 or A490/F2280 that is used for bolts in a moment end plate causes failure of the connection and produces the error message: " Design valid only for A325/F1852 or A490/F2280 bolts ." For a shear plate, you get the error message: " Design valid only for A325 or F1852 bolts " if material other than A325/F1852 is used for the bolt.
Group:A or B according to the material strength of high-strength bolts.
AISC Fifteenth Edition: The default values entered here are defined in section J3.1 (AISC Steel Construction Manual , Fifteenth Edition , pg 16.1-126).
Group A: A325 and F1852
Group B: A490 and F2280
Connection Method: Bearing Threads INC or Bearing Threads EXC or Slip Critical . AISC 15th Edition: Values entered here are used for bearing type bolts per equation J3-1 (AISC Steel Construction Manual , Fifteenth Edition , pg 16.1-131). For slip-critical bolts, connection design calculates the strength limit state using equation J3-4 (AISC Steel Construction Manual , Fifteenth Edition , pg 16.1-134).
' Bearing Threads INC ' is for a bearing-type connection with threads included in the shear plane.
' Bearing Threads EXC ' is for a bearing-type connection with threads excluded from the shear plane.
' Slip Critical ' is for bolts in slip-critical connections. For ' Slip Critical ' bolts, you also have to enter a " Surface Class ."
Surface Class: A or B . This applies when the selected " Connection Method " is ' Slip Critical '.
Class ' A ' has a Slip Coefficient of 0.30 and applies to uncoated clean mill scale steel surfaces and blast-cleaned steel surfaces with Class A coatings.
Class ' B ' has a Slip Coefficient of 0.50 and applies to uncoated blast-cleaned steel surfaces and blast-cleaned steel surfaces with Class B coatings.
Shear (Fnv): The nominal shear stress ( Fnv ) for the type of bolt being defined (in ksi or MPa, depending on the primary dimension " Units ").
AISC Fifteenth Edition: The default values entered here are from Table J3.2 on page 16.1-129.
Tension (Fnt): The nominal tensile stress ( Fnt ) for the type of bolt being defined (in ksi or MPa, depending on the primary dimension " Units ").
AISC Fifteenth Edition: The default values entered here are from Table J3.2 on page 16.1-129.
Nut Grade: Any grade that has been entered to the Nut and Washer Schedule can be selected ( ) here, on this list box . Line 1 on the Washer and Nut Schedule sets the default grade that is selected when you create a new bolt definition.
When connection design applies a heavy hex nut to the primary position on a bolt, it uses the grade that is selected here as the " Primary nut grade ."
Tip: Although you can select any grade that is entered on the Nut and Washer Schedule , you should only select those grades that apply to heavy hex nuts.
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| AISC 13th | Australian | Canadian | ASD 9th | LRFD 3rd | Eurocode |
| tells you the units for " Tension ." Bolts defined under this tab apply when ' AS 4100 ' is the " Connection design method. "
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Bolt: 46/S or 8.8/S or 8.8/TB or 8.8/TF are bolt types that are filled out on this table in the default Job Options . Any other bolts that may appear on this window have been added by users of a full-featured SDS2 program . Refer to Table 9.3.1 on page 99 of the AS 4100 - 1998 .
Effect on a full-featured SDS2 program: Any bolt defined here is selectable for bolt type settings throughout your current Job (for example, " NM bolt type to supported ").
Bolt standard: AS/NZS 111 or AS/NZS 1252 are standards that are filled out on this table in the default Job Options . If other standards are shown here, they were filled out by users of a full-featured SDS2 program . Refer to Table 9.3.1 on page 99 of the AS 4100 - 1998 .
Grade: 4.6 or 8.8 are the choices that are filled out on this table in the default Job Options . Refer to Table 9.3.1 on page 99 of the AS 4100 - 1998 .
Method of Tightening: Snug Tight or Full Tensioning . Refer to Table 9.3.1 on page 99 of the AS 4100 - 1998 .
Connection Method: Bearing-type or Slip Critical (friction type connections in which slip in the serviceability limit state is required to be limited). Refer to Table 9.3.1 on page 99 of the AS 4100 - 1998 .
Slip Factor: The slip factor as specified in Clause 9.3.3.2 on page 101 of the AS 4100 - 1998 .
Standard: The hole type factor ( kh ) for calculating the shear capacity ( Vsf ) for the bolt being defined when it is used in a standard hole in a slip-critical connection. See Clause 9.3.3.1 on page 101 of the AS 4100 - 1998 .
Oversized: Same as " Standard ," except that this applies to oversized holes.
Short Slot: Same as " Standard ," except that this applies to short slots.
Long Slot: Same as " Standard ," except that this applies to long slots.
Tension: The minimum tensile strength ( fuf ) in ksi or MPa (depending on the primary dimension " Units "). Refer to Table 9.3.1 on page 99 of the AS 4100 - 1998 .
Nut Grade: Any grade that has been entered to the Nut and Washer Schedule may be shown here. Line 1 on the Washer and Nut Schedule sets the default grade.
In a full-featured SDS2 program , when connection design creates a single heavy hex nut on the bolt, it applies the grade that is selected here as the " Primary nut grade ."
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| AISC 13th | Australian | Canadian | ASD 9th | LRFD 3rd | Eurocode |
| tells you the units for " Tension " and " Reduced Tension ." Bolts defined under this tab apply when ' CISC ' is the " Connection design method. "
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Bolt: Any character string ( up to nine characters ) to designate the name of the bolt type. Any bolt defined here is selectable for bolt type settings throughout your current Job (for example, " NM bolt type to supported ").
Material: A307 or A325 or A490 or F1852 or F2280 are the material types filled out on this table in the default Job Settings files (see below for allowable entries). Any other materials that may appear on this window have been added by users of a full-featured SDS2 program .
The default bolt set: A325/F1852 and A490/F2280 are materials that are suitable for high strength connections. A307 is material for "soft bolts" that are, for example, used for " Erection bolts ."
Restrictions: A material other than A325/F1852 or A490/F2280 that is used for bolts in a moment end plate causes failure of the connection and produces the error message: " Design valid only for A325/F1852 or A490/F2280 bolts ." For a shear plate, you get the error message: " Design valid only for A325 or F1852 bolts " if material other than A325/F1852 is used for the bolt.
Connection Method: Bearing Threads INC or Bearing Threads EXC or Slip Critical .
' Bearing Threads INC ' is for a bearing-type connection with threads included in the shear plane.
' Bearing Threads EXC ' is for a bearing-type connection with threads excluded from the shear plane.
' Slip Critical ' is for bolts in slip-critical connections.
Surface Class: A or B or C . This applies when the selected " Connection Method "is ' Slip Critical '.
Class ' A ' applies to clean mill scale and blast-cleaned surfaces with Class A coatings.
Class ' B ' applies to blast-cleaned surfaces and blast-cleaned surfaces with Class B coatings.
Class ' C ' applies to hot dip galvanized with wire brushed surfaces.
Ks: The mean slip coefficient ( ks ) used to determine the slip resistance of a bolted joint subjected to shear in a slip-critical connection. Refer to Clause 13.12.2.2 on page 1-38 and to Table 3 on page 1-117 of the CISC , Eighth Edition.
C1: The coefficient ( c1 ) used to determine the slip resistance of a bolted joint subjected to shear in a slip-critical connection. Refer to Clause 13.12.2.2 on page 1-38 and to Table 3 on page 1-117 of the CISC , Eighth Edition.
Thread Factor: The factor to be applied to the calculation of Vr in Clause 13.12.1 on page 1-38 of the CISC , Eighth Edition. When the " Connection method " is ' Bearing Threads EXC ', the default factor is ' 1 '. When the " Connection method " is ' Bearing Threads INC ', the default factor is ' 0.70 '.
Tension : The specified minimum tensile strength ( Fu ) in ksi (MPa for ' Metric ') for bolts whose diameters are less than or equal to the " Limiting Bolt Dia (in inches) ". See Clause 13.12.1.1 on page 1-38 of the CISC , Eighth Edition.
Limiting Bolt Dia (in inches): The bolt diameter (in inches) that divides where the program applies the " Tension " or the " Reduced Tension " to the bolt. See Clause 13.12.1.1 on page 1-38 of the CISC , Eighth Edition.
Reduced Tension: The specified minimum tensile strength ( Fu ) in ksi (MPa for ' Metric ') for bolts that are larger in diameter than the " Limiting Bolt Dia (in inches) ". See Clause 13.12.1.1 on page 1-38 of the CISC , Eighth Edition.
Nut Grade: Any grade that has been entered to the Nut and Washer Schedule may be shown here. Line 1 on the Washer and Nut Schedule sets the default grade.
In a full-featured SDS2 program , when connection design creates a single heavy hex nut on the bolt it uses in a connection, it applies the grade that is selected here as the " Primary nut grade ."
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| AISC 13th | Australian | Canadian | ASD 9th | LRFD 3rd | Eurocode |
| tells you the units for " Standard " " Oversized " " Short Slot " " Long Slot " and " Tension ." Bolts defined under this tab apply when ' ASD9 ' is the " Connection design method. "
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Bolt: Any character string ( up to nine characters ) to designate the name of the bolt type. A bolt defined is selectable for bolt type settings throughout your current Job (for example, " NM bolt type to supported ").
Material: A307 or A325 or A490 are the material types filled out on this table in the default Job Options setup file. Any other materials that may appear on this window have been added by users of a full-featured SDS2 program .
The default bolt set: A325/F1852 and A490/F2280 are materials that are suitable for high strength connections. A307 is appropriate as a material for "soft bolts" such as the bolts used as " Erection bolts ."
Restrictions: A material other than A325/F1852 or A490/F2280 that is used for bolts in a moment end plate causes failure of the connection and produces the error message: " Design valid only for A325/F1852 or A490/F2280 bolts ." For a shear plate, you get the error message: " Design valid only for A325 or F1852 bolts " if material other than A325/F1852 is used for the bolt.
Connection Method: Bearing Threads INC or Bearing Threads EXC or Slip Critical .
' Bearing Threads INC ' is for a bearing-type connection with threads included in the shear plane.
' Bearing Threads EXC ' is for a bearing-type connection with threads excluded from the shear plane.
' Slip Critical ' is for slip critical bolts. For ' Slip Critical ' bolts, you must also enter a surface class.
Surface Class: A or B or C . Cells in this column are disabled when the " Connection Method " selected is ' Slip Critical '.
Class ' A ' has a Slip Coefficient of 0.33 and applies to clean mill scale and blast-cleaned surfaces with Class A coatings.
Class ' B ' has a Slip Coefficient of 0.50 and applies to blast-cleaned surfaces and blast-cleaned surfaces with Class B coatings.
Class ' C ' has a Slip Coefficient of 0.40 and applies to hot dip galvanized and roughened surfaces.
Note: For ' ASD9 ', the default " Standard ASD " " Oversized ASD " " Short Slot ASD " and " Long Slot ASD " values for slip critical bolts are assigned by " Surface Class " per Table 3 on page 5-271.
Standard ASD: The maximum allowable shear stress in ksi for ' Imperial ' (or MPa for ' Metric ') that the type of bolt being defined can withstand when used in a standard hole. A standard hole is a round hole that is typically 1/16 inch larger than the bolt diameter.
Note: The default values entered here for ' ASD9 ' are Fv from Table I-D on page 4-5. Slip critical values are from Table 3 on page 5-271.
Oversized ASD: The maximum allowable shear stress in ksi (MPa for ' Metric ') for the type of bolt being defined when used in an oversized hole. An oversized hole is a round hole that is typically 1/8 inch larger than the bolt diameter.
Note: The default values entered here for ' ASD9 ' are Fv from Table I-D on page 4-5. Slip critical values are from Table 3 on page 5-271.
Short Slot ASD: The maximum allowable shear stress in ksi (MPa for ' Metric ') for the type of bolt being defined when it is used in a short slot.
Note: The default values entered here for ' ASD9 ' are Fv from Table I-D on page 4-5. Slip critical values are from Table 3 on page 5-271.
Long Slot ASD: The maximum allowable shear stress in ksi (MPa for ' Metric ') for the type of bolt being defined when it is used in a long slot.
Note: The default values entered here for ' ASD9 ' are Fv from Table I-D on page 4-5. Slip critical values are from Table 3 on page 5-271.
Tension ASD: The maximum allowable tension in ksi (MPa for ' Metric ') for the type of bolt being entered.
Nut Grade: Any grade that has been entered to the Nut and Washer Schedule may be shown here. Line 1 on the Washer and Nut Schedule sets the default grade.
In a full-featured SDS2 program , when connection design creates a single heavy hex nut on the bolt, it applies the grade that is selected here as the " Primary nut grade ."
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| AISC 13th | Australian | Canadian | ASD 9th | LRFD 3rd | Eurocode |
| tells you the units for " Standard " " Oversized " " Short Slot " " Long Slot " and " Tension ." Bolts defined under this tab apply when ' LRFD3 ' is the " Connection design method. "
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Bolt: Any string ( up to nine characters ) to designate the name of the bolt type. A bolt defined here is selectable for bolt type settings throughout your current Job (for example, " NM bolt type to supported ").
Material: A307 or A325 or A490 are the material types filled out on this table in the default Job Options setup file. Any other materials that may appear on this window have been added by users of a full-featured SDS2 program .
The default bolt set: A325/F1852 and A490/F2280 are suitable materials for high strength connections. A307 material is for "soft bolts" such as the bolts that are used for " Erection bolts ."
Restrictions: A material other than A325/F1852 or A490/F2280 that is used for bolts in a moment end plate causes failure of the connection and produces the error message: " Design valid only for A325/F1852 or A490/F2280 bolts ." For a shear plate, you get the error message: " Design valid only for A325 or F1852 bolts " if material other than A325/F1852 is used for the bolt.
Connection Method: Bearing Threads INC or Bearing Threads EXC or Slip Critical .
' Bearing Threads INC ' is for a bearing-type connection with threads included in the shear plane.
' Bearing Threads EXC ' is for a bearing-type connection with threads excluded from the shear plane.
' Slip Critical ' is for slip critical bolts. Note: " Standard " " Oversized " " Short Slot " and " Long Slot " are disabled when ' Slip Critical " is selected. In a full-featured SDS2 program , the connection design program makes the appropriate calculations using the slip coefficient associated with the " Surface Class " entered.
Surface Class: A or B or C . This applies when the " Connection Method " is ' Slip Critical '.
Class ' A ' has a Slip Coefficient of 0.33 and applies to clean mill scale and blast-cleaned surfaces with Class A coatings.
Class ' B ' has a Slip Coefficient of 0.50 and applies to blast-cleaned surfaces and blast-cleaned surfaces with Class B coatings.
Class ' C ' has a Slip Coefficient of 0.40 and applies to hot dip galvanized and roughened surfaces.
Standard LRFD: The maximum allowable shear stress in ksi for ' Imperial ' (or MPa for ' Metric ') that the type of bolt being defined can withstand when used in a standard hole. A standard hole is a round hole that is typically 1/16 inch larger than the bolt diameter.
The default values for ' LRFD3 ' are from Table J3.2 on page 16.1-61.
Oversized LRFD: The maximum allowable shear stress in ksi (MPa for ' Metric ') for the type of bolt being defined when used in an oversized hole. An oversized hole is a round hole that is typically 1/8 inch larger than the bolt diameter.
The default values for ' LRFD3 ' are from Table J3.2 on page 16.1-61.
Short Slot LRFD: The maximum allowable shear stress in ksi (MPa for ' Metric ') for the type of bolt being defined when it is used in a short slot.
The default values for ' LRFD3 ' are from Table J3.2 on page 16.1-61.
Long Slot LRFD: The maximum allowable shear stress in ksi (MPa for ' Metric ') for the type of bolt being defined when it is used in a long slot.
The default values for ' LRFD3 ' are from Table J3.2 on page 16.1-61.
Tension LRFD: The nominal tensile strength in ksi (MPa for ' Metric ') for the type of bolt being entered.
The default values for ' LRFD3 ' are from Table J3.2 on page 16.1-61.
Nut Grade: Any grade that has been entered to the Nut and Washer Schedule may be shown here. Line 1 on the Washer and Nut Schedule sets the default grade.
In a full-featured SDS2 program , when connection design creates a single heavy hex nut on the bolt it uses in a connection, it applies the grade that is selected here as the " Primary nut grade ."
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| AISC 13th | Australian | Canadian | ASD 9th | LRFD 3rd | Eurocode |
Bolt: Any character string (up to 9 characters) to designate the name of the bolt type. A bolt defined here becomes selectable ( ) on list boxes for bolt type throughout your current Job (for example, as the " NM bolt type to supported ").
4.6A and 4.8A and 5.6A and 5.8A and 6.8A and 8.8A and 8.8C and 10.9A and 10.9C are bolt types that are filled out on this table in the default Job Options setup file.
Material: 4.6 or 4.8 or 5.6 or 5.8 or 6.8 or 8.8 or 10.9 are the material types filled out on this table in the default Job Options setup file. Any other materials that may appear on this window have been added by users.
Restrictions: A material other than 8.8 that is used for bolts in a moment end plate or shear plate causes failure of the connection and produces the failure message " Design valid only for class 8.8 bolts ."
Connection Method: Bearing Threads INC or Bearing Threads EXC or Slip Critical .
' Bearing Threads INC ' is for a bearing-type connection with threads included in the shear plane. That is to say, the shear plane passes through the unthreaded portion of the bolt.
' Bearing Threads EXC ' is for a bearing-type connection with threads excluded from the shear plane. That is to say, the shear plane passes through the threaded portion of the bolt.
' Slip Critical ' is for bolts in slip-critical connections.
Surface Class: A or B or C or D . See Table 18 on page 64, BS EN 1090-2:2008+A1:2011. A " Surface Class " needs to have been entered when ' Slip Critical ' is selected as the bolt's " Connection Method ."
Class ' A ' has a slip factor of 0.50 and is for not-pitted surfaces that have been blasted with shot or grit with loose rust removed.
Class ' B ' has a slip factor of 0.40 and is for surfaces that have been blasted with shot or grit and spray-metallized with an aluminum- or zinc-based product.
Class ' C ' has a slip factor of 0.30 and is for surfaces that have been blasted with shot or grit with alkali-zinc silicate paint with a thickness of 50 µm to 80 µm.
Class ' D ' has a slip factor of 0.20 for as-rolled surfaces.
Bearing Coefficient: This applies when ' Bearing Threads INC ' or ' Bearing Threads EXC ' is selected as the bolt's " Connection Method ." The default choices made here are based on the values specified for a v in the "Shear resistance per shear plane" failure mode in Table 3.4 on page 27, BS EN 1993-1-8:2005.
| Eurocode specifications for the value of a v | |
| Connection Method | Bolt Material |
| Bearing Threads Included |
For 4.6, 5.6 and 8.8, a v = 0.6
For 4.8, 5.8, 6.8 and 10.9, a v = 0.5 |
| Bearing Threads Excluded | a v = 0.6 |
Yield strength (fyb) : The nominal yield strength of the bolt. For metric dimensioning, yield strength is measured in megapascals (MPa).
Ultimate Strength (fub) : The nominal ultimate strength of the bolt. For metric dimensioning, yield strength is measured in megapascals (MPa).
Nut Grade: Any grade that has been entered to the Nut and Washer Schedule can be selected ( ) here, on this list box . Line 1 on the Washer and Nut Schedule sets the default grade that is selected when you create a new bolt definition.
In a full-featured SDS2 program , when connection design creates a single heavy hex nut on the bolt it uses in a connection, it applies the grade that is selected here as the " Primary nut grade ."
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