can I change a square entryway to an eyebrow arch style entryway in a load bearing wall?

Answer 1

if you dont want to widen the opening just arch the top its easy you can use a string and plywod to make your radius then cut the ply wood make 4 pieces from the 4 corners of a sheet of plywood then cut little blocks if you ues 1/2 ply you should cut blocks 2 1/2 inches to make up 3 1/2 inches of a 2x4 then nail the blocks in between the 2 piecess of ply wood on the corner and every couple inches around the curve then nail blocks on the doorway and slide the corner on the blocks and nail in the curved corner in the square corner and cover with dry wall/ plaster to match and on the curve bend in 1/4 dry wall they make bendable corner bead to finish the edge.

Answer 2

Yes, as long as it is correctly supported while you make the changes. An arched opening in a wall is actually quite a bit stronger when it comes to bearing a load than a flat top opening is.

Answer 3

Just go ahead and have fun.

So long that you ARE NOT
doing any structural changes like removing a header, moving the entrance or widening it. If you do buid it to code and do not deprive your wall from needed support.

In typical 'stick' construction (like in two-by-four for instance ) archway or not makes structurally no difference.