HomeMy WebLinkAbout224.00Y
K
Q
m
Z
pipe O.D.
1'-0
min min
end cap or plug flow to second
dispersal trench
clean out wye from pipe if necessary
notched
a
grade board
m in 6" perforated pipe laid flafnevel
2" x 2" notches
18" O.C.
type I CB w/solid cover (locking)
A
A
SO'
type I CB
w/solid cover
❑❑
influent pipe (max design
flows0.5 CFS per trench)
clean out wye from pipe
galvanized
2" x 12"
pressure
treated grade
board
filter
*15% max for flow control/water quality'
treatment in rural areas.
PLAN
NTS
/ pipe O.D.
SECTION A -A
NTS
min 6" perforated
pipe laid flat
clean (<5% fines)
4" - 1 �"washed rock
flow to other
branching CB's
as necessary
18" O.C�—I
V-
2" grade
board notches 2
NOTES:
1. This trench shall be constructed so as to prevent point discharge and/or erosion.
2. Trenches may be placed no closer than 50 feet to one another. (100 feet along flowline)
3. Trench and grade board must be level. Align to follow contours of site.
4. Support post spacing as required by soil conditions to ensure grade board remains level.
+ + PUBLIC WORKS 50 FOOT DISPERSION TRENCH STD. PLAN - 224.00
�NTo� DEPARTMENT WITH NOTCHED BOARD
MARCH 2008