HomeMy WebLinkAbout05D1803OTD/803
Finish Grade
Filter Fabric
- 402.4
n.C- 3/4"- 2-1/2" Washed Aggregate
8" Perf PVC Pipe
Filter Fabric
.................................... IE 398.9
.4 6' 9
INFILTRATION TRENCH
STAPLES OR WRE R1NGS
FLTER FABRIC MATERIAL
MIRAFI 100 OR EQUAL
2"x4" DOUG. FR
AT 4' O.C.
Tx 2 X 14 GA.WELDED WRE
FABRIC OR EQUAL
U
ELEVATION
FLTER FABRIC MATERIAL
2"X2'X14GA. W.WF.
r-I VT WASHED ROCK
OR PEA GRAVEL
SILTATION FENCE DETAIL
n
8"x 8" PVC TEE
WITH RUBBER
GASKETS
A PORTION OF SECTION 33.T 21 N R 5 E W.M.
TYPE I-C CATCH BASIN
NOTES:
L PLACE 1" OF 3/4"-1-V2"WASHED ROCK OR PEA
GRAVEL ON BOTH SIDES OF FENCE TO CREATE
A BEVEL SHAPE
2. FABRIC SHALL COVER BOTTEM OF 6'X6"
TRENCH AND EXTEND BEYOND THE LIMITS OF
THE GRAVEL IN ORDER TO MAINTAIN AN EXCESS
OVERLAP OF 27MIN" AS SHOWN IN
TYPICAL CROSS-SECTION
2' X 4' DOUG FIR OR EQUAL
AUBURN, KING COUNTY WASHINGTON
ap With
3asCket
8" PVC
Filter
A
'roperty Line vv
2' 2-0'
S= 2%
5��—
Existing Gr
Asphalt Concrete Pavm't. 2" Min Comp Depth
Crushed Surfacing Top Course 2" Comp,
NOTES:
1) Do not place fabric under grate.
2) App6s with subgrade work. Once
crushed rods placement procedes
for find pavng. wrap grate with
fabric and remove above completing
CB adjustment and making water
tight.
Sediment
Q
Profile Grade
ROADWAY SECTION
No Scales
SECTION AA
Typical 4 Sides
A
Basin With Crate
Line .
Sediment Sump
AREA INLET SEDIMENT FILTER
ISOMETRIC PLAN VIEW
even
Deep X 12" Wide
INFILTRATION TRENCH FOR RON GOODCHILD
AREA - 0+60 TO 10+40 X 20' - 0.413 ACRES
43560
RAINFALL INTENSITY ZONE Auburn 25Yr.
SITE AREA (A) 0.45 Acre
RUNOFF FACTOR (R) 0.9
PERCULATION RATE (P) 5 min/in
TRENCH DEPTH (D) 4 f t
TRENCH WIDTH (W) 6 f t
TRENCH LENGTH - 78 LF
TOTAL PERC AREA - L x W - 469 SF
Qp - I / Prec.Rate(Sec) - 05 x 60 x 12) - 0.0003 CFS
Qt-LxWxQp- 0.1303 CFS
Qo - Qt\ A-R - 0.3217 CFS
T25 - -25+ 1463 - -25 + 1463- 42.79 Min.
Zo0I%
Vs-3510xT-60xQoxT - 1389.7CFS
T25+25
Vt- VsxRxA- 563CF
VOLUME OF TRENCH 563 CF
QUANTITIES:
Surfacing Areas
1125 LF X 29 = 22.500 SF
45 2 x 3.14159 = 6.360 SF
Total = 28.860 SF
CRUSHED SURFACING TOP COURSE
28BSO x 2 = 177 Cu.Yd
27 x-12
ASPHALT CONC.PAVM'T CLASS "B"
- 9 X 20�- = 366 Tons
OMES 1,25,MW
Grading No GRA0007-94 g
THESE PLANS ARE "APPROVED" FOR
CONFORMANCE WITH THE CITY OF AUBURN
ENGINEERING DIVISION'S REQUIREMENTS
APPROVED BY: t �
DATE APPROVED: `/` 154
Lij OD
4-
U)
Ln
a
w
of
<m
-d LO
V L (DI
C8 200
CNN
z
o_
O
a
d
3
m
J
<
m
(0
00
--4
C_
(O
m
N
�
�
�I
U
cry
Sheet 2
OF 2