Saturday, November 1, 2014

Layover Valley Rafter Basics

Before I get into the Hexenschnitt for the Layover Valley Rafter I needed to review the basic geometry that defines the layover valley rafter. I needed to make sure I could draw the layover valley rafter correctly in plan view (ground plan).


Here's one method of a basic drawing using the layover valley rafter backing triangle to position the layover valley rafter material on the roof surface that defines the  layover valley rafter in plan view.

The  layover valley rafter top bevel is easily defined by extending the  layover valley rafter backing triangle to the top of the  layover valley rafter. The other  layover valley rafter line in plan view is defined by the bottom edge of the  layover valley rafter material sitting on the  layover valley rafter backing triangle. (Roof Surface).


The  layover valley rafter plan view lines at the intersection of the two roofs.


I tried this method for drawing the  layover valley rafter, but this method seems to be slow of a process for determining the  layover valley rafter on the roof surface.


Another task model ground plan drawing of the  layover valley rafter.

This method of drawing the  layover valley rafter on the roof surface was still to slow of a process for drawing the  layover valley rafter  on the roof surface.


This method of drawing the  layover valley rafter on the roof surface was simple enough.


However, I think this geometric method of drawing the  layover valley rafter is still the easiest for drawing the  layover valley rafter on the roof surface for the basic dimensions and bevels of the  layover valley rafter.

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