Hello to all;
After building two arbors (with arches on top) for the wife she has moved on to a garden gate project. This gate will actually sit under the most recent arbor/arch I built. I have built gates before, even monster sized gates that have never sagged because I overbuilt them. Mostly some kind of 2 x 4 & Z type frame.
The current project will be similar to the attached picture and I am concerned about how to get this into a "sag proof" design based on the picture of what she wants in the end. I will probably make the gate out of Western Red Cedar but open to suggestions. It will be a big gate, roughly 7 foot to the top of arch, and 40" wide (more or less)
As far as the "top part", the circle area, I wonder if I can get away with routing this out of some kind of plywood for simplicity and protecting it from the elements with a couple layers of exterior paint/stain?? I could always make this out of WRC using a segment calculator, but my past arches have required a 2 x 6 board to obtain a 3.5" width and this appears wider than 3.5" - Based on: Woodturners Resource Segment Calculator
As far as frame joinery, open to suggestions, based upon simplicity but requiring strength.
Any comments about approach, design, materials, etc would be greatly appreciated.