1992, 06-05 Permit 92001765 Radon Mitigation System•
auuttzr hrporalian
E. 8620 991h Spokane, Ila. 99206
Phone 509 926-6217 Fax 509 928-8689
Legend for Radon mitigation system
— —perforated pipe beneath slab
CO solid 4'ABS stack vent pipe
RADON SYSTEM SPECIFICATIONS ATT
RADON MITIGATION SYSTEM
This radon mitigation system is
designed only for the specific job -
site address designated. The system
is not guaranteed unless installed
by Cavalier Corporation
Sub Slab System
YES
SQ FT
Cravlspace System
SO FT
Jurisdiction COUNTY
Project Number
War n J . f iAd.1 4�t.
Environmental Protection Agenc P,R .Pi`�►P 4,4��''
•: 171111 1
THESE PLANS HAVE BEEN REVIEWED
)4L-7- Rio a sy 5 7--
BY e4f •
ON 6-5-_/2
Jobsite E. 10108 FERRET
Builder
Address
JORDAN CONSTRUCTION
P .0 , BOX 212 NEUMAN LAKE, 99025
Phone 226-3514
92 - (-765-
i
RADON VE. ...
NT
BASEMENT
GARAGE
Qatrn1ir engineering
radon services
E. 8620 44th
Spokane, WA 99206
Phone (509) >1O-6217 FAX (509) 928-8689
RADON SYSTEM SPECIFICATIONS, SPOKANE COUNTY:
t
1. Perforated pipe shall be installed within the native soil
or fill (sand, gravel or soil) at a minimum depth of 1"
below the intended
2. The pipe shall be a minimum diameter of 4". meet AASHTO
M252, have perforatio s no wider than 1/16" and have a
minimum of 2.5 square inches of total perforations per
linear foot of pipe.
3 There shall be a min um of 10 linear feet of perforated
pipe per hundred square feet of slab floor space.
4 The pipe shall be laid in a continuous loop. connected at_
both ends to the solid stack vent pipe.
5. Any slab area, which is larger than 10 square feet, which
is isolated from other slab areas by footings or other
barriers, shall have a perforated pipe installed to the
above specifications. (The pipe can be a single Length
rather than a connected loop if the area is too small or
narrow to accomodate a connected loop.)
6. A stack vent of ABS, schedule 40, minimum size 4", shall
be connected to the sub -slab piping and proceed upwards
to an exit location ea the roof. and extending 14" above
the roof. The pipe shall be labeled "radon vent" every
16" or less for its full length. The pipe's attic
location shall allow a minimum of 4' of head room. When-
ever possible this exit location shall be on the backside
of the roof.
7. Any elbows in the stack vent piping shall have a
centerline radius aiia4mum of 1.5 by pipe width.
8. An inline centrifugal fan, minimum 114 cfm @ 3/8" W.C.,
UL listed, manufactured specifically for radon mitigation,
maximum sone level 2.8, shall be installed in the exhaust
line, in the attic.
9. Couplings to connect the vent piping to the fan shall be
elastomeric PVC, Fertco series 1056 or equal.
10. The fan shall be hard -wired and the breaker labeled "radon
fan".
11. All penetrations and joints in the concrete floor slab
below grade shall be sealed with caulk or grout.
12. A notice shall be permanently attached to the electrical
panel advising the owner or occupant about the radon
system and that he/shm shall test the home for radon
annually. The notice shall include Cavalier's name and_
phone number.
13. All craftsmanship shall be of high quality.