1992, 03-03 Permit Radon Mitigation SystemPROTECTION AND OP 4iNO$ E3L 1% t EN A DWZIIINCI ANt i151 VA f fa GARAG SIA_ 11. HA V
1) Materials approved for one -hoar fire•-rs.lstive construction tin tiro darago side and _
2) No openings other than si self-ctosinp tight -fitting door of oithor.
a) 1-3/8" soikri woM, or
b) One having an approved fire protection rating of not less than 20 minutes.
Gordon Finch Homes
basement ~ "`„,
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S 5101 Felts
Ponderosa
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THESE PLANS HAVE BEEN REVIEWED
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BY wi , 20-5
ON 3-3-ga
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slab on grade
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Radon Vent •
garage
•firpral
E. 8620 44th Spokane, 1Ja . 99206
Phone 509 926-621 7 Fax 509 928-8689
Legend for Radon mitigation system
_-perforated pipe beneath slab
Q solid 411BS stack vent pipe
RADON SYSTEM SPECIFICATIONS ATT
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RADON 11ITIGATI0N STSTLl1
This radon mitigation system Es
designed only for the specific job -
vita address designated. The system
is not guaranteed unless installed
by Cavalier Corporation
Job site address, 5104 S Felts R
bu1idar
Gordon Finch Homes
Sq Ft
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.Co1nty„
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Warren /J e'
Environmental Protection Agencrse, r + ��
•1ui�nu
Catcall .r t ngtneering
ra
rl services
E. 8620 44th * Spokane, WA 99206
Phone (509) 112*-6217 FAX (509) 928-8689
RADON SYSTEM SPECIFICATIFS, SPO ANE COUNTY:
1. Perforated pipe shall be inst Iled within the native soil
or fill (sand, gravel or soil at a minimum depth of 1"
below the intended slat.
2. The pipe shall be a miktimum d ameter of 4". meet AASHTO
M252, have perforatioab no wi er than 1/16" and have a
minimum of 2.5 square inches •f total perforations per
linear foot of pipe.
3. There shall be a min Wum of 1.0 linear feet of perforated
pipe per hundred squalfe feet •f slab floor space.
4. The pipe shall be laid in a c.ntinuous loop. connected at
both ends to the solid stack ent pipe.
5. Any slab area, which is large than 10 square feet, which
is isolated from other slab a eas by footings or other
barriers, shall have $ perfor ted pipe installed to the
above specifications. (The p pe can be a single length
rather than a connected loop f the area is too small or
narrow to accomodate t connec ed loop.)
6. A stack vent of ABS, schedule 40, minimum size 4", shall
be connected to the aslb-slab •iping and proceed upwards
to an exit location q the rod', and extending 14" above
the roof. The pipe skill be abeled "radon vent" every
16" or less for its fell leng h. The pipe's attic
location shall allow a minimu• 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 •iping shall have a
centerline radius mit#mum of i.5 by pipe width.
8. An inline centrifugal fan, mi imum 114 cfm @ 3/8" W.C.,
t'L listed, manufactured spec i ically for radon mitigation,
maximum sone level 2.$, shall be installed in the exhaust
line, in the attic.
9. Couplings to connect the vent piping to the fan shall be
elastomeric PVC, Fermeo series. 1056 or equal.
10. The fan shall be hard -wired . d the breaker labeled "radon
fan".
11. All penetrations and joints i the concrete floor slab
below grade shall be sealed tth caulk or grout.
12. A notice shall be permanentI attached to the electrical
panel advising the over or .ccupant about the radon
system and that he/abi shall test the home for radon
annually. The notice shall 1 elude Cavalier's name and.
phone number.
13. All craftsmanship shall be o high quality.