SylvanLMP
Christopher
Lets be a little professional and think like a 1st YEAR APPRENTICE
Lets say you have A 4″ 4″ DOWN SPOUT leader 44 =16 Sq inches CORRECT?
NOW let go with a 4″ “Round” leader pipe Pi R sq would be 2 2 = 4 3.14159265 = 12.56 SQ inches as opposed to the 44 =16 sq inches..
Simple math But now consider the connection to the leader PIPE . most lead pipes are round CAST IRON and plastic, so the trasformation of ROUND to ROUND would look neater using round pipe as opposed to Square to round configurations.
So suppose you opted for a 5″ round leader would give you a drainage piping of 19.62 Sq inches
which is more capacity then the 4 4 square pipe. All you need to do is size your roof figure your pitch convert the Square feet into fixture units size the gutter and figure the size of the actual down spout needed.
ANYONE can figure the size of this piping.
SQUARE = L W
Round = Pi times the radius squared Radius is half the dia times itself so a 4″ round would be 22 3.14 TA DUM NOW you decide WHAT you like better Round Squaire OR RECTANGLE again L W.
DARN it Man we can put a BLOKE on the moon WHY cant the home owner HAVE a say how a bloody down spout should be in what shape YOU want.
YOU have options sir dont let the bloody contractors give you the old heave ho GOOD LUCK MATE
