HomeMy WebLinkAbout263.302" T4 A"
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ASPHALT BERM DETAIL
2I,r n ?-:CK
PAD. SEE NO'E 3
314' TO 1 1R" WASHED � 2" X B" GEDAR BOARD
GRAIN ROCK I
s'MIN PL'C
CRUSHEORQCKOR
PERFORATED PIPE
GRAVEL
PER ASTM D1784
r
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f
ig DROP
5'iMIN6'
MIN.
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N
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700150 FTr MAX lr I
I— BETWzEN BERMS,+� I c a
51:1- "d;J I
i I
f
I
54' MIN
VEGETATED
F LOWPAT H
I
4
UNDISTURBED
I
IIr I' NATIVE SOIL
24 M IN IV NON -WOVEN GEOTEXTILE
FOR SEPARATION
DISPERSION TRENCH DETAIL SLOT DRAIN
SEE NOTE
DRIVEWAY SLOPE -
+—
! I
f
r
r t
f
1G MIN
L
DIAC,QNAL A5 PHALT
PER A, SEE NOTE A
25' MIN
— — DISPERSION
-- TRENCH
1
25' MIN
VEGETATED I 7
FLOWPATH I
NO O'd`=RLAP OF ,
FLOWFATI SECiM ENTS
PLAN - STEEP DRIVEWAY WITH DIAGONAL BERMS (t1S%j
AREA DRAIN.
NOTES: SEE Nta1E s—
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r
I SEE STD PLAN 224.00 FOR ALTERNATE DISPERSION TRENCH IF '
CONTRIBUTINGAREAEKCEEDS 70EI SF USE 10 LF OF TRENCH WTH
NOTCH QOARD PER 7W SF TO MAX 50 LF OF TRENCH
1 IF DISCHARGE IS 70'OVARD A STEEP SLOPE HAZARD AREA OR A LANDSLIDE
HAZARD STEEPER THAN 15%, VEGETATED FLOWPATIH MUST BE 50 FEET
3 MATERIAL FOR ROCK PAD TO BE V4' TC i tf2' VVASHED GRAIN ROCK
.. SLOT DRAINS OR ASPHALT BERMS MAY BE USED, TO DIRECT RUNOFF TO
ROCK PADS OR DISPERSION TRENOHES IN VARIOUS CONFIGURATIONS
LAYOUTS 511OWNARE ONLY 'EXAMPLES.
5 MIN 12'x12"AREA.IYARU) DRAIN PIPE TO BE MIN 4"DIA SCFI40PVC PIPE
PER ASTM 01705, SLOPED AT 1% MIN
GENERAL NOTES:
1 MAXIMUM VEGETATED FLOWPATH SLOPE IS 15% FOR ANY 20 -FOOT REACH.
AND MAI? NOT EXCEED 20%
2 REFER TO SEL; * ON C.2 4 i THE CITY OF RENTON SURFACE WATER
DESIGN MAtiu--L FOR ADDiT;C NAL DISPERSION REQUIREMENTS
J d 1 I
J r t Ila
J r I L7
r
I J 117
I
I I I
d 700 Sq FT MAIC d I
BETWEEN DRNNS. SEE NATE
I I
?5 A I
DRIVEWAY SLOPE �—
J T?F';L•I
PLAN • STEEP DRIVEWAY WITH SLOTTED DRAINS (*15/off 9
Adoftli,, f
STD. PLAN - 263,30
• Pueuc WORKS BASIC DISPERSION - STEEP
Rl DEPARTMENT DRIVEWAYSNbalff 5/
"RW, LATE
n.t,w
Vy MIN
��• -
J7h
NO OVERLAP
I
OF
25' MIN.
y—
FLO' PATHS
VEGETATED
1j 25 MIN
1
FLOIAPATH
I+ VEGETATED
FLOWPATH..
SEE NOTE 2
PLAN • STEEP DRIVEWAY WITH SLOTTED DRAINS (*15/off 9
Adoftli,, f
STD. PLAN - 263,30
• Pueuc WORKS BASIC DISPERSION - STEEP
Rl DEPARTMENT DRIVEWAYSNbalff 5/
"RW, LATE
n.t,w