Transverse Stiffener

Enter the transverse stiffener data.

Select the composite section for which transverse stiffener data will be entered, and enter the required data in the dialog box. Composite sections having different transverse stiffeners should be inputted separately.

Note
1. For steel composite design as per AASHTO-LRFD, if a single composite section has n (assumed integer) different transverse stiffeners depending upon the position of the section then, n number of composite sections need to be defined in the section properties dialog box with different section ID but the same section properties.

2. Only for EN 1994-2, the transverse stiffener data can be entered by elements rather than by sections.

From the Main Menu select Design > Composite Design > Transverse Stiffener

If EN 1994-2 is selected

First, select the members in the model and enter the following data:

Both end parts (I & j) have the same stiffener : Check the box if the transverse stiffener is identical for both ends i and j of an element. Once the transverse stiffener data is entered under I tab, an identical data will be automatically entered under J tab.

Rigid Transverse Stiffener

     ht: Width of Stiffener
     t: Thickness of Stiffener
     Pitch: Spacing of Rigid transverse stiffener

  Intermediate rigid transverse stiffener (Check)
     Dist. From rigid stiffener

  Intermediate non-rigid transverse stiffener
     Dist. From rigid stiffener

     (Refer to EN 1993-1-5, Figure 5.3, page 24)

Click Apply to assign the transverse stiffener

If AASHTO-LRFD is selected

Target Section & Element

Select a steel Composite Section ID for which transverse stiffener will be entered. Sections other than Composite Sections do not appear in this List

Transverse Stiffener

Select the box before 'Web' to define the stiffener in the web of steel composite section selected from the Target Section & Element List.

     Click on to input the transverse stiffener parameters:


     Stiffener Type: Choose the type of stiffener. Flat type and Tee type stiffeners are supported in midas Civil.

     One or Two Stiffener: Choose between one or two stiffeners. The two stiffener option is available for I/Box/Tub sections.

     Fy: Yield Strength of transverse stiffener. Yield Strength can be entered as per the grade of steel chosen from code by clicking on
      or the value can be entered manually.

     Pitch: Pitch refers to transverse stiffener spacing. At the strength limit state, this can be used to distinguish between
     stiffened and unstiffened webs or calculate shear strength of the web.

     H: Height for Tee type transverse stiffener

     B: Width of transverse stiffener

     t: Thickness of Flat type transverse stiffener

     tw: Thickness of web for Tee type transverse stiffener

     tf: Thickness of flange for Tee type transverse stiffener

Click Apply to save the transverse stiffener data input.

Bearing Stiffener

Select the box before 'Bearing' to define the bearing stiffener of steel composite section selected from the Target Section & Element List.

Click on to input the bearing stiffener parameters:

Stiffener Type: Choose the type of stiffener. Flat type and Tee type stiffeners are supported in midas Civil.

Pair of Stiffener: Choose the number of pair stiffener. Bearing stiffener is placed in both side between web.

Fillet welds: Length of fillet welds of bearing stiffener

     Fy: Yield Strength of bearing stiffener. Yield Strength can be entered as per the grade of steel chosen from code by clicking on
      or the value can be entered manually.

     Pitch: Pitch refers to bearing stiffener spacing. Pitch value is hidden if only 1 pair of stiffeners are selected.

     H: Height for Tee type bearing stiffener

     B: Width of bearing stiffener

     t: Thickness of Flat type bearing stiffener

     tw: Thickness of web for Tee type bearing stiffener

     tf: Thickness of flange for Tee type bearing stiffener

Click Apply to save the transverse stiffener data input.

If AS 5100.6: 2017 is selected

Target Section & Element

Select a steel Composite Section ID for which transverse stiffener will be entered. Sections other than Composite Sections do not appear in this List.

Transverse Stiffener

Select the box before 'Web' to define the stiffener in the web of steel composite section selected from the Target Section & Element List.

     Click on  to input the transverse stiffener parameters:


Stiffener Type: Choose the type of stiffener. Flat type and Tee type stiffeners are supported in midas Civil.

One or Two Stiffener: Choose between one or two stiffeners. The two stiffener option is available for I/Box/Tub sections.

Fy: Yield Strength of transverse stiffener. Yield Strength can be entered as per the grade of steel chosen from code by clicking on
or the value can be entered manually.

Pitch: Pitch refers to transverse stiffener spacing. At the strength limit state, this can be used to distinguish between stiffened and unstiffened webs or calculate shear strength of the web.

H: Height for Tee type transverse stiffener

B: Width of transverse stiffener

t: Thickness of Flat type transverse stiffener

tw: Thickness of web for Tee type transverse stiffener

tf: Thickness of flange for Tee type transverse stiffener

Click Apply to save the transverse stiffener data input.

Bearing Stiffener

This is not supported for AS 5100.6: 2017.

If CSA-S6-19 is selected

Fillet welds: Length of fillet welds of bearing stiffener