External arch

[deanno]

Can the external arch be built with normal house bricks and does it have to have round corners. I have picked up some bricks with a 45 degree angle, thought it would make the arch easier to build. I have enough to go 3 deep and it gives me a flat top for the chimney to be built up on.

[oblertone]

Although they will direct the force more out than down (as in a rounded arch) they'll be just fine for your arch entry.