Hi Angel,
If you are working from the diagram at the top of page 162 , then ignore the 320 dimension in the top sketch, measure the total length of each FF2 & FF3 using the 290 + 69.5 dimensions & once you have cut the lower compound angle & the 26degree "notch" then the 14degree top angle it should all fit perfectly.
Just to explain the 320 dimension...........that is the total length AFTER all the cuts have been made to each part, so ignore it when measuring the intial length of steel you intend to cut.
Hope this helps
cheers
andy
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