I went to my wood pile, to find a peice of oak for the last deck beam.
1" x 4" x 6'.
The longest "piece" I had was about 5' 4". Or I could cut into the lovely 16' plank that I had intended for the sheer clamps.
Maybe I could laminate up a plank. After all, this is going to be supported by a post in the middle. And glue is stronger than wood. And.. And..
I have cut a whole set of 1" x 1" strips, and most of them 5' 4" long, and staggered the joints so that when I cut it to shape, and cut the notches I should not have any weak points.
The whole lot is glues up with Balcotan PU - which does not stick to Cling Film / Plastic Wrap - and clamped with about 30 F-clamps.
It's sitting in my garden shed, awaiting a bounce test.
I reckon that if I can put a block under each end and it will support my 200lbs bouncing up and down on it, then it should be good.
It is for a 14' sail boat, not an ocean going clipper....
Any thoughts or comments.