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Follow the next steps to create K Top cross-frames.

1

Pick 2 Girders that the cross frame will be placed between.

2

Enter the Station of the cross frame.

3

Go to Sections tab.

4

Import AISCL8X8X3/4 and assign it to Top & Bottom & Diagonal Chord Sections.

5

Go to Gusset Plate tab, select top, bottom and center gusset plate and edit the gusset plate offset values for top, bottom and diagonal plates.

6

Go to Stiffener tab.

7

Edit the vertical stiffener thickness as 1 and vertical stiffener width as 7 in.

8
 Quick Tip

Do not forget to assign the related material for each case.

9

Go to Geometry tab.

10

Edit the offset values for top chord, diagonals, and bottom chord.

11
 Quick Tip

Skew Angle parameter rotates the the unskewed line which is perpendicular the PGL.

 Quick Tip

Follow the next steps to use parameters at the FEA Section, and understand the parametric relationship.

Go to Parameters tab at the FEA section.

Enter Parameter Name and set Parameter Value.

Go back to Cross-frame X tab.

For the first row set Station parameter as ‘=Spacing*1’.

For the second row set Station parameter as ‘=Spacing*2’.

Select both of them.

Drag down to automatically increase the multiplier of the spacing.

Station parameter of the cross frames are now function of Spacing parameter.

Follow the below steps to copy and paste all inputs from our data set.

1

Go to Cross-frame K Top under Cross Frames on the tree view.

2

Copy Location, Sections, Gusset Plate, Stiffener, Geometry from model inputs and paste into OpenBrIM.

Completed cross frames is illustrated below.

 Quick Tip: Copy inputs to OpenBrIM

Copy the desired data with the automatic copy button in the upper left corner.

Click on the first cell in and use the Ctrl+V shortcut to paste.

If icon won’t appear, collapse page tree menu by clicking on arrow or using shortcut “[”.

While pasting large data, it would be handy to turn of Auto-refresh .

Cross-frame K Top

Location

CFKT1	[G2,G1]	0.0000	0.0000
CFKT28	[G4,G3]	0.0000	0.0000
CFKT29	[G3,G2]	0.0000	0.0000
CFKT30_1	[G2,G1]	0.0000	530.0000
CFKT30_2	[G4,G3]	0.0000	530.0000
CFKT30_3	[G3,G2]	0.0000	530.0000

Sections

CFKT1	AISCL8X8X3_4	AISCL8X8X3_4	AISCL8X8X3_4
CFKT28	AISCL8X8X3_4	AISCL8X8X3_4	AISCL8X8X3_4
CFKT29	AISCL8X8X3_4	AISCL8X8X3_4	AISCL8X8X3_4
CFKT30_1	AISCL8X8X3_4	AISCL8X8X3_4	AISCL8X8X3_4
CFKT30_2	AISCL8X8X3_4	AISCL8X8X3_4	AISCL8X8X3_4
CFKT30_3	AISCL8X8X3_4	AISCL8X8X3_4	AISCL8X8X3_4

Gusset Plate

CFKT1	GSK_TOP	GSK_BOTTOM	GSK_CENTER	3.0000	3.0000	6.0000	1.0000
CFKT28	GSK_TOP	GSK_BOTTOM	GSK_CENTER	3.0000	3.0000	6.0000	1.0000
CFKT29	GSK_TOP	GSK_BOTTOM	GSK_CENTER	3.0000	3.0000	6.0000	1.0000
CFKT30_1	GSK_TOP	GSK_BOTTOM	GSK_CENTER	3.0000	3.0000	6.0000	1.0000
CFKT30_2	GSK_TOP	GSK_BOTTOM	GSK_CENTER	3.0000	3.0000	6.0000	1.0000
CFKT30_3	GSK_TOP	GSK_BOTTOM	GSK_CENTER	3.0000	3.0000	6.0000	1.0000

Stiffener

CFKT1	1.0000	7.0000	A709_50
CFKT28	1.0000	7.0000	A709_50
CFKT29	1.0000	7.0000	A709_50
CFKT30_1	1.0000	7.0000	A709_50
CFKT30_2	1.0000	7.0000	A709_50
CFKT30_3	1.0000	7.0000	A709_50

Geometry

CFKT1	10.0000	0.0000	10.0000	8.0000	11.0000	6.0000	6.0000	6.0000	8.0000	0.0000	10.0000
CFKT28	10.0000	0.0000	10.0000	8.0000	11.0000	6.0000	6.0000	6.0000	8.0000	0.0000	10.0000
CFKT29	10.0000	0.0000	10.0000	8.0000	11.0000	6.0000	6.0000	6.0000	8.0000	0.0000	10.0000
CFKT30_1	10.0000	0.0000	10.0000	8.0000	11.0000	6.0000	6.0000	6.0000	8.0000	0.0000	10.0000
CFKT30_2	10.0000	0.0000	10.0000	8.0000	11.0000	6.0000	6.0000	6.0000	8.0000	0.0000	10.0000
CFKT30_3	10.0000	0.0000	10.0000	8.0000	11.0000	6.0000	6.0000	6.0000	8.0000	0.0000	10.0000

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