Just finished my second one yesterday.
I will have to measure out. I only had 11' total to work with. So, the length at top from end to end is 10 9". The height is 4' 10". I had to get a smaller Brazillian hammock to work with these dimensions. In an apartment.
The base is a standard length 2x4". The two base boards are 2x6" 40" boards. As for the angles (lol). Adjusted those manually to achieve the spread on the top.