Forums >> Revit Building >> Technical Support >> How did this .pat Code number come about?

SquareEdge

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Joined: Tue, Dec 9, 2014
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I found on the internet a .pat file for a herringbone brick pattern. 

The coding is as follows:

***************************

*AR-HBONE, Standard brick herringbone pattern @ 45 degrees

;%TYPE=MODEL

45,0,0,4,4,12,-4

135,2.828427125,2.828427125,4,-4,12,-4

************************

It works fine. It's for a 4x12 brick (I think)

Could someone please tell me how the number "2.828427125" was arrived at? Mathmatically?

This seems to be for a brick of size 4x12. I would like to do a brick 3x10 but I can't do it until I get that number right (the number "2.828427125" which works for 4x12 doesn't work for 3x10)

Please advise.

Many thanks

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