All Area Plumbing's Sample Underground Waste & Vent

[deezynar]

27 toilets in the women's

7 toilets & 7 urinals in the men's

at 20 seconds you see what looks like another wall bracket in the distance

[rdeagan]

You cannot offset dry vents horizontally under the floor. They must rise at least six inches above the flood-level rim of the fixture or drain being served before offsetting.

[deezynar]

@rdeagan

It's been years since I've done commercial design so I don't claim to be an expert and I don't really want to look it up in the code, but if I recall correctly, floor drains are exempt from that rule for 2 reasons. First, you'd have to have a vent coming out of the floor right next to every floor drain. Second, horizontal vents for floor drains must have a WCO where they come up AFF.  The WCO is there so the vent can be rodded if an overflow carries an obstruction into it.

[AllAreaPlumbing]

@deezynar I believe what you are referring to is "conventional venting", unfortunately structural conditions prevented this and flat vents were used. I agree, WCOs are required and were installed. This model flythrough shows our underground pre-fab with stub ups at a typical 18"AFF. All risers are cut down after the concrete slab is poured and cleanouts are installed at a typical 12"AFF to center. In addition, flat vents use drainage fitting, following the same rules as a waste line.

[deezynar]

@AllAreaPlumbing

rdeagan claimed your design didn't meet code, I explained that it did. Your design is actually very typical. Cheers.

[deezynar]

That's pretty cool.

[rdeagan]

The colors are pretty but it's not done according to code.

[AllAreaPlumbing]

@rdeagan Why do you believe it's not drawn to code?

[deezynar]

@rdeagan

It looks good to me. What are you seeing that I'm not?

[TruthinFilm]

large restroom? That sucker's HUGE !

[deezynar]

@TruthinFilm

2 bathrooms, 1 men's & 1 women's. There are several floor drains, a mop sink and at least 1 water fountain outside. This is pretty typical for a movie theater or even a high school cafeteria.

[MrRUKidddingMe]

@deezynar how manytoilets? 30?

[AllAreaPlumbing]

@MrRUKidddingMe  Mens: 7 toiltes 7 urinals 5 lavs Womens 28 toiltes 7 lavs Private back to back restrooms Men & Womens with 1 lav and toilet each. Total: Toilets: 37 Lavs:14 Urinals: 7