Code Interpretation

[kybob]

I'd like to make sure I am interpretting this correctly before chatting with the inspector. I'm replacing a bunch of old galvenized with PEX and planned to do a homerun system for a variety of reasons. I had a few questions.

1) Does the below (120-8-2-2) just mean the stub out needs to be within 30" of say a faucet. For example, a 20ft run to a lav with a 24in SS hose from the valve to the faucet?
2) The table below appears to call for 3/4 inch for a shower, but only 1/2 for a bathtub. That doesn't seem logical - do others interpret it that way.

120: Water Supply and Distribution, Kentucky State Plumbing Code | UpCodes

UpCodes offers a consolidated resource of construction and building code grouped by jurisdiction

up.codes

1.

1. The minimum size water service from the property line to the water heater shall be three-fourths (3/4) inch.
2. The hot and cold water piping shall extend three-fourths (3/4) inch in size to the first fixture branch.
3. More than three (3), one-half (1/2) inch fixture branches shall not be supplied from a one-half (1/2) inch pipe.

2.

1. The schedule in this subsection shall be used for sizing the water supply piping to a fixture.
2. The branch pipe to a fixture shall terminate not more than thirty (30) inches from the point of connection to the fixture and shall be brought to the floor or wall adjacent to the fixture.

Fixture Branches	Nominal Pipe Size (Inches)
Bath tubs	1/2
Combination sink and tray	1/2
Lavatory	1/2
Water closet (tank type)	1/2
Hot water boilers	3/4
Wall hydrant	1/2
Shower (single head)	3/4

 

[Jeff H Young]

Wish I woulda seen this sooner A Tub or Tub/shower requires more water than a single head shower . my code has fixture units and a tub is double the number of fixture units 4 fixture units vs 2 fixture units. not familiar with Kentucky looks like a typo to me maqkes no sence to me

 

[Sponsor]

 

[kybob]

Wish I woulda seen this sooner A Tub or Tub/shower requires more water than a single head shower . my code has fixture units and a tub is double the number of fixture units 4 fixture units vs 2 fixture units. not familiar with Kentucky looks like a typo to me maqkes no sence to me

All good. I spoke with the inspector and they said 1/2 was fine as long as it was the only fixture on the line, the 3 connections to 1/2" would not fly in this scenerio but 1/2 home run was fine.

 

[Jeff H Young]

Yea but its shocking your code thinks a shower needs more water than a tub totally wrong . Im guessi8ng its an only in kentucky thing.

 

[kybob]

Yea but its shocking your code thinks a shower needs more water than a tub totally wrong . Im guessi8ng its an only in kentucky thing.

Goes perfect with out dry vent every fixture...