Zee Construction

The zee is not produced by Ryerson, but was created from an Army-Navy specification. [AND10138] [AND10139] The zee is available in both ``equal leg'' and ``unequal leg'' models. The leg is what has been referred to as the flange in all of the models. These two types of extrusions were both made from the same model. The ``equal leg'' model is a special case of the more general ``unequal leg'' model, where both legs are the same length. Therefore, the ``unequal leg'' model can create the ``equal leg'' extrusion just by having the same length for both legs. The variable ``Flange'' has been replaced by ``FlangeB'' and ``FlangeC'' for the bottom and top flanges respectively. The bottom and top flange dimensions were referred to as ``B'' and ``C'' in the MIL SPEC.

Figure 4.17: Extrusion Profiles, Zee

1. Insert Line Free Ref Loc [0,0,0] Dxyz 0 0 0 Dx FlangeB Dy Fl_Th Xangle Draft_Negative Dx -Flange End (select beginning of line)
2. Join Pcurve Chn (select previous Line)
3. Insert Line Free Ref End (either line at the bottom left corner) Dxyz Web_Th Web_Ht 0 Dx -FlangeC Dy -Flange_Th Xangle Draft_Negative Dx FlangeC End (select beginning of line)
4. Join Pcurve Chn (select previous line)
5. Insert Rectangle Height Web_Ht Width Web_Th Vertex End (either line at the bottom left corner)
6. Union Profile (select all curves)
7. Break Pcurve (select new profile)
8. Insert Fillet Radius Fillet (select all corners to be filleted)
9. Insert Fillet Radius Round (select all corners to be filleted)
10. Join Pcurve Chn (select curve)

Last Modified: Wed Aug 28 14:41:29 EDT 1996