Thread: Indirect waste lines...

Hello to all,

Can someone point me to the section in the 2006 IRC that covers/addresses indirect waste situations (e.g. bar sink drained to nearby floor drain, etc.) and what is or is not allowed?

Thanks!

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A bar sink is not, should not be, an indirect waste.

It should be connected into the sanitary drainage system.

10-4.

Is there a section of the IRC that addresses this specifically? I was trying to find it, and cannot.

Maybe a UPC section?

From the IRC.
- P2601.2 Connection. Plumbing fixtures, drains and appliances used to receive or discharge liquid wastes or sewage shall be connected to the sanitary drainage system of the building or premises in accordance with the requirements of this code. This section shall not be construed to prevent indirect waste systems.

INDIRECT WASTE PIPE.

A waste pipe that discharges into the drainage system through an air gap into a trap, fixture or receptor.

To find out more about "indirect wastes", you must go to the IPC.

SECTION 802
INDIRECT WASTES

802.1 Where required.

Food-handling equipment and
clear-water waste shall discharge through an indirect waste
pipe as specified in Sections 802.1.1 through 802.1.7. All
health-care related fixtures, devices and equipment shall discharge
to the drainage system through an indirect waste pipe by
means of an air gap in accordance with this chapter and Section
713.3. Fixtures not required by this section to be indirectly connected
shall be directly connected to the plumbing system in
accordance with Chapter 7.

802.1.1 Food handling.

Equipment and fixtures utilized for
the storage, preparation and handling of food shall discharge
through an indirect waste pipe by means of an air
gap.

802.1.2 Floor drains in food storage areas.

Floor drains
located within walk-in refrigerators or freezers in food service
and food establishments shall be indirectly connected
to the sanitary drainage system by means of an air gap.
Where a floor drain is located within an area subject to
freezing, the waste line serving the floor drain shall not be
trapped and shall indirectly discharge into a waste receptor
located outside of the area subject to freezing.

Exception:

Where protected against backflow by a
backwater valve, such floor drains shall be indirectly
connected to the sanitary drainage system by means of an
air break or an air gap.

802.1.3 Potable clear-water waste.

Where devices and
equipment, such as sterilizers and relief valves, discharge
potable water to the building drainage system, the discharge
shall be through an indirect waste pipe by means of an air
gap.

802.1.4 Swimming pools.

Where wastewater from swimming
pools, backwash from filters and water from pool deck
drains discharge to the building drainage system, the discharge
shall be through an indirect waste pipe by means of
an air gap.

802.1.5 Non potable clear-water waste.

Where devices
and equipment such as process tanks, filters, drips and boilers
discharge non potable water to the building drainage system,
the discharge shall be through an indirect waste pipe by
means of an air break or an air gap.

802.1.6 Domestic dish washing machines.

Domestic
dish washing machines shall discharge indirectly through an
air gap or air break into a standpipe or waste receptor in
accordance with Section 802.2, or discharge into a
wye-branch fitting on the tailpiece of the kitchen sink or the
dishwasher connection of a food waste grinder. The waste
line of a domestic dish washing machine discharging into a
kitchen sink tailpiece or food waste grinder shall connect to
a deck-mounted air gap or the waste line shall rise and be
securely fastened to the underside of the sink rim or counter.

802.1.7 Commercial dish washing machines.

The discharge
from a commercial dish washing machine shall be
through an air gap or air break into a standpipe or waste
receptor in accordance with Section 802.2.

802.2 Installation.

All indirect waste piping shall discharge
through an air gap or air break into a waste receptor or
standpipe.Waste receptors and standpipes shall be trapped and
vented and shall connect to the building drainage system. All
indirect waste piping that exceeds 2 feet (610 mm) in developed
length measured horizontally, or 4 feet (1219 mm) in total
developed length, shall be trapped.

802.2.1 Air gap.

The air gap between the indirect waste
pipe and the flood level rim of the waste receptor shall be a
minimum of twice the effective opening of the indirect
waste pipe.

802.2.2 Air break.

An air break shall be provided between
the indirect waste pipe and the trap seal of the waste receptor
or standpipe.

802.3 Waste receptors.

Every waste receptor shall be of an
approved type. A removable strainer or basket shall cover the
waste outlet of waste receptors. Waste receptors shall be
installed in ventilated spaces. Waste receptors shall not be
installed in bathrooms or toilet rooms or in any inaccessible or
unventilated space such as a closet or storeroom. Ready access
shall be provided to waste receptors.

802.3.1 Size of receptors.

A waste receptor shall be sized
for the maximum discharge of all indirect waste pipes
served by the receptor. Receptors shall be installed to prevent
splashing or flooding.

802.3.2 Open hub waste receptors.

Waste receptors shall
be permitted in the form of a hub or pipe extending not less
than 1 inch (25.4 mm) above a water-impervious floor and
are not required to have a strainer.

802.4 Standpipes.

Standpipes shall be individually trapped.
Standpipes shall extend a minimum of 18 inches (457 mm) and
a maximum of 42 inches (1066 mm) above the trap weir.
Access shall be provided to all standpipes and drains for
rodding.

Thank you!