Ray Alternate Design.pdfit, c. 189"
June 23, 2009
CITY OF EDMONDS
121 5TH AVENUE NORTH • EDMONDS, WA 98020 • (425) 771-0220 • FAX (425) 771-0221
Website: www.dedmonds.wa.us
DEVELOPMENT SERVICES DEPARTMENT
Planning • Building • Engineering
Kyle and Juliann Ray
P.O. Box 252
Edmonds, WA 98020
RE: Request for Alternate Design — Air Admittance Valve
15625 75th Place West, Edmonds
SFT200900012, Building Permit Application BLD20080376
Dear Mr. & Mrs. Ray:
GARY HAAKENSON
MAYOR
Your plumbing contractor, Advanced Plumbing and Heating, has submitted a request for Alternate
Materials and Methods of Construction Equivalency for installation of an air admittance valve at the
kitchen sink in your new home being constructed at 15625 75th Place West, Edmonds. We received
your letter June 18, 2009 where you state that you approve the use of the air admittance valve at your
property as requested, understand they are not an approved method of venting in the State adopted
Uniform Plumbing Code, and understand the maintenance requirements of the air admittance valve.
The proposal is to use one 20300 Studor Mini Vent for venting a kitchen sink. The reasons stated for
the alternate venting source include structural issues and location problems of tying into the plumbing
vent system.
The request to use one air admittance valve to vent the previously noted plumbing fixture is hereby
approved with the noted conditions below.
➢ Install per manufacturer's specifications
➢ The plumbing contractor must provide you with written directions as to how to inspect and
maintain the air admittance valve. These directions shall be provided to all future property
owners.
Sincerely,
Ann Bullis, CBO
Building Official
• Incorporated August 11, 1890 •
Sister City - Hekinan, Japan
.
LCJ. 2004 2:45PM Hoover Premier homes NoA 546 P. 2
City Of Edmonds,
I am writing to you concerning a rough -in plumbing code violation in the City Of
Edmonds jurisdiction. This Douse, (Permit iY 20080376)15625 7P PI W Edmonds, is a
custom house with no conveniignal way to vent the kitchen sink. A loop vent would have
dropped the grade- of the trunk line in the basement soffit to be below the height of the
man door; and a conventional vent out -ie roof was not possible: because there is an
outdoor deck right above the Kitchen %with no way to get a vent out. With no other
options, I installed a studor vrnt, which is legal in the city of Seattle, as well as
-Snohomish County!
Thank you for your time reviewing the matter. If you have any questions, please
feel free to call Brent at 206-660=7442.
Thank you,
Advanced Plumbing And Hea4ing.
This request is.made per UPC 301.2 Materials and Methods of Construction Equivalency,
l Kyle Ray Owner of praperrty, undentand that air
admittance valves are not an approved method of venting -in. the State adopted CJniforxn
Plumbing Code, are aware that this regtiest for use of an airadmittance valve as an
exception to the code, and undeistand the maintenance requirements of the air admittance
valve.
20300 Studor Mini Vent
JUN 18 2009
SUILDING DEPARTMENT
CITY OF EDMlONDS
STUDOK
I nVENT ive TECHNOLOGY®
Protective Cover
(a)
MINI -VENT®
I� 2%"
All � (b)
Adaptor I%" NPT
(C)
fits 1 Y: or 2" pipe sizes
Specification Sheet 1 MINI -VENT'
Manufacturer: StudorO Inc. Model: MINI -VENT"
Item #: 20301 (PVC Connector) Connection Size: 1%"-2"
20300 (ABS Connector)
General:
An air admittance valve shall be acceptable as a vent termination for any individual vent,
common vent, circuit vent, loop vent, island fixture vent, vent stack or stack vent that is
provided to prevent siphonage of a fixture trap. An air admittance valve can be used as
an alternative to extending a vent through the roof (or sidewall) to the open atmosphere.
Location:
A. The MINI -VENT® should be located a minimum of 4" above the weir of the fixture trap
for single fixture and branch venting and 6" above the flood level of the highest
fixture for stack venting.
B. Each valve should be installed in an accessible location.
Installation:
A. The valve should be connected to the piping in accordance with the manufacturer's
installation instructions.
B. The valve should be installed in the vertical, upright position after rough -in and
pressure testing of the DWV system.
C. A minimum of one vent shall extend to the open atmosphere for every building
drainage system.
D. The valve should not be installed as a vent terminal for any special (chemical) waste
system or in supply and return air plenums.
E. The valve may be installed on sewer ejectors, if installed according to engineer design
and prior local code approval.
F. For installation in areas with temperature ranges between -40° F and +150°F.
Materials: f=eatures:
(a) Polystyrene A. Screening on the inside and outside of the valve to protect the sealing membrane from
(b) ASS (acrylonitrile butadiene styrene) insects and debris.
valve with elastromeric membrane B. Protective cover for the air intake and additional insulation against extreme temperatures.
(c) ABS or PVC Adaptor C. Ability to divert condensation away from the sealing membrane.
D. Lifetime Warranty.
Performance Standards:
• ASSE 1051 (revised 2002) single fixture and Branch type AAVs
• ASSE 1050 (revised 2002) Stack Type AAVs
• NSF Standard 14 (Plastic Components)
Code Approvals:
• International Plumbing Code (IPC) 2003 Edition
• Southern Building Code Council International (SBCCI) 1994 Edition
• Building Official Code Administration (BOCA) 1993 Edition
• International Residential Code (IRC) 2003 Edition
• Uniform Plumbing Code (UPC) Section 301.2 Alternative Materials and
Methods 2003 Edition
Listings:
• ASSE Seal of Approval
• National Evaluation Services (NES -592)
• NSF International (NSF Standard 14)
• NSF International (ASSE Performance Standard 1051 and ASSE 1050)
- IAMPO Classified Marking, file No. C-3803
• Warnock Hersey (ITS - Intertek Testing Services)
Sizing Chart
Horizontal
Branch Size
Max DFUs
1'/2'
3
2"
6
311
20
4"
160
Stack Size
Max DFUs
11/z
8
211
24