I've seen guidlines that state that flow rates through copper pipe should be designed to NOT exceed 5-7 feet per second. Is this accurate?
If i have one supply for the following fixtures:
Whirlpool tub faucet, 4.0 units
Shower, 2.0 units
Bath/Shower, 4.0 units
2 Lavs, 2.0 units
Unit total is: 12.0
https://terrylove.com/watersize.htm
Take the whirlpool tub by itself. The faucet can flow ~15gpm @ 60psi, for 3/4" copper this would be around 10fps, 1" would be around 6fps?
If i use the code books and add up the fixture units, 3/4 is fine. But would it be more appropriate to upgrade to 1". We would never use all fixtures at the same time, but two showers at the same time would be in the plan, so that's ~5-6gpm.
If i have one supply for the following fixtures:
Whirlpool tub faucet, 4.0 units
Shower, 2.0 units
Bath/Shower, 4.0 units
2 Lavs, 2.0 units
Unit total is: 12.0
https://terrylove.com/watersize.htm
Take the whirlpool tub by itself. The faucet can flow ~15gpm @ 60psi, for 3/4" copper this would be around 10fps, 1" would be around 6fps?
If i use the code books and add up the fixture units, 3/4 is fine. But would it be more appropriate to upgrade to 1". We would never use all fixtures at the same time, but two showers at the same time would be in the plan, so that's ~5-6gpm.
Last edited by a moderator: