Really underground garage
Join Date: Aug 2010
Location: mnts of Va
We call that a "segment arch"....its a single radius thats a segment of a circle.VS eliptical(oval),and a true circle top...which is a single radius @ 180*.If its sq top no curve its usually refered to just a cased opening.
Because of the close tolerances(see C-Man above)its imperative you get a level playin field.On small reveals and such,1/4" mis-alignment can stand out like a sore thumb.Best of luck,BW
Last edited by BWSmith; 01-26-2011 at 08:15 AM.