Plans RECEIVED
058.000 FLS 4 20'6
CITY OF TlCA a
BUILOII`G dlVISION
12"Min Native Earth
12.0
Earth
u 6..d rJ•..A
2.0
Foam Insulation t
„ 77T
❑ 0 I
3 PIPE
❑ I❑ M M ❑ 0 SWR ❑ a :
❑ f❑ ❑ 03 ❑ 0 ❑ 0
60.o ❑ 0 50.26 cu.ft.Actual Capacity
varlaae ❑ m [3 0 0 0 0 ❑ 0 S
❑ m ❑ M ❑ 0 ❑ 0
3"Minus Drain Rock a o
❑ E] ❑ 0] ❑ 0 ❑ 0 : Q❑ m ❑ M ❑ 0 ❑ 0 woo
5.012.0 Min
S" .� s.
ASTM C 478 S ,,, 3"-6"Clean Rock 0 O
Wall Thickness 21.38 cu.ft.Min Storage Requirement L
NOTES: New Dry Well Existing Dry Well Q V p+
1.Drywell edge shall to be located a minimum of 30 LN.FT. from structure foundation.
2.All Precast Sections shall conform to requirements of ASTM C 478.
3.Invert shall be level and smooth.
4.Existing drywell is 48". Greater than code req.of 28"diameter and 5'in height as currently installed. There is not enough native Contractor:Pr@Sti @ Design &
backfill. Well ring at top section is to be cut down approximately 10"to increase cover to a minimum of 12"and Reset Lid and install g
a 2"foam insulation panel top of lid with 12"native backfill over top of insulation. General Contracting
5.3"-Drain rock to be placed at 6"depth under and 12"around rings. 12302 NE Marx St.Portland OR 97230
6.3"SWR Pipe inlet at top side ring per plan.
ORCCB#199616 OFFICE COPY
7. Minimum storage requirement 21.38 Cu.Ft.based on 5'tall by 28"diameter min code req.Depth is restricted therefore width set Job site:
at 48"and new Ht.at 48"provide increased storage totaling over 50 Cu Ft.of storage capacity. Grog BgSSin@
8.Work to include:(a.)removal of soils over existing drywell. (b.)remove drywell lid. Expose existing drain rock at sides of drywell 13335 SW Chimney Ridge Ct.
do not disturb geo textile fabric more than necessary, repair as needed. (c.)cut top ring to 48"min elevation above base drain rock. Tigard, OR 97223
(d.)Adjust SWR 3"pipe accordingly at inlet maintain min slope.(e.)call Tigard Plumbing dept.for inspection. Replace Lid and cover
with native soils removed.
- c rood M.
9.Drywell size will accommodate 1343 sqft of drainage area. Actual drainage area aprox 450 sgft.