Graphic solution at fire rated walls.

[mzabritski]

mbetham,

Not sure why they do it, but ours do the same thing. The solution we use is to load the same pattern into Autocad as a hatch. Then go into the exported AutoCAD file, select the broken hatches and change the hatch type to the Autocad version of the same hatch. You also have to change the scale. At least the rotation angle displays correctly. Its a few extra steps, but at least it comes out OK in the end. The biggest challenge is that all the patterns (1 hour, 2 hour, smoke. etc..) come in one the same layer and there is no easy way to select all of certain type.

[sradley]

Does anyone have a 4 Hour.pat file?

[mbeham]

Just so everyone knows there is a program out there called global cad hatch manager that allows you to create hatch patterns from drawings. I've used it here to create our custom rated and smoke walls it works great. http://www.globalcad.com/system/index.html that is the site click on the hatch manager and you can download a free trial that allows you full capability to create and save the hatches. It works with any AutoCAD you have installed.

[david.kingham]

Here's a 4 hour I whipped together Scott

[sradley]

Thank you very much!

[patricks]

Has anyone noticed any system slow-downs using these patterns? It seems to take quite awhile, for me, to load up the pattern when you're first defining and creating the custom patterns, and I'm running quad processors.

[mbeham]

Ok so since i have been racking my brain for a few months on this hatch pattern "tape" method for fire walls I have successfully got it working nicely then broken it. When i say broken i mean the fact that it doesnt work in AutoCAD and the work around is not practical, has made me find what I, as the R & D person, and the user have found to be an even better solution that doesnt involve pesky hatch patterns. What I have discovered isnt a perfect solution. Basically what i have done is created a plan profile that is 10 feet tall and approximatley a 1/2" wide. Then I go to the Wall properties and modified the wall to have a sweep in the center of the wall. (the 10' will need to be adjusted per height but more on that later) Now you will see the sweep in section. Finish the family of the wall and go to the plan. in the plan you will see the profile lines for the sweep. Now set up linestyles for each type of rated wall. Use the linework tool to override the lines in plans and sections where you want to see the line in the center of the wall. Where you dont override with the linework tool using the <invisible lines>. We've found this a much better solution than the hatches and drawing the 2D Detail lines because its part of the wall, moves with the wall, extends with the wall, you can change the line weights to look appropriate. The only issue is in section the profile will need to be the height of the wall. But this helps you control if the wall is only rated on one floor its easy to do that as well with a sepearte wall type and using the offsets. Like i said not a perfect solution but this helps us because not all our disciplines are using Revit and we need to be able to see the linework in autoCAD.

[david.kingham]

Sounds similar to this http://forums.augi.com/showthread.ph...ht=fire+rating