20191303 Ver 1_Permeable Pavement Details_20190930

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ALL CONSTRUCTION RCL BE PER
CITY OF DURHAM A WOR NCDOT
STANDARDS AND S CIFICATION
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- - - - - - - - - - - - -
PERMEABLE PAVEMENT PROFILE
SECTION A -A
SEE CONCRETE BAFFLE DETAIL
A)
C SEE PERVIOUS CONCRETE SECTION DETAIL
; SEE UNDERDRAIN CONNECTION DETAIL AT SD-7
4
C14) CONTRACTOR TO INSTALL 3 OVERFLOWS
IN THE NORTH SIDE SD-8. EACH OVERFLOW
SHALL BE 3" TALL BY 1' LONG WITH AN INVERT
ELEVATION OF 336.13. HARDWARE CLOTH (0.25"
X 0.25") SHALL BE ANCHORED INTO SD-8 TO
SEPARATE THE STRUCTURE FROM THE 57
STONE IN RESERVOIR 3.
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SCALE: 1" = 10'
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2X WEARING SURFACE
AND BEDDING
RESERVOIR
STONE \ RESERVOIR
STONE
RESERVOIR
STONE RESERVOIR
STONE
SUBGRADE BOTTOM SLOPE _ +/ 0%
0.51' (TYP.)
PERFORATED TRANSVERSE PERMEABLE PAVEMEI
UNDERDRAIN PER DESIGN BAFFLE. SEE DETAIL
PLANS THIS SHEET
NOTES:
I. TERRACE TRANSVERSE BOTTOM SLOPES AND CROSS SLOPES SHALL BE 0%.
TYPICAL TERRACING DETAIL
NOTES:
I. PROVIDE A TUBE MADE OF NON -CORROSIVE MATERIAL. SCHEDULE 40
PVC OR EOUAL. AT LEAST 3 FEET LONG WITH AN INSIDE DIAMETER
OF 4 TO 6 INCHES. PERFORATED PIPE IS REOUIRED FOR ALL
OBSERVATION WELLS. OR CLEANOUTS USED AS OBSERVATION WELLS.
2. FACTORY ATTACHED BRASS OR HIGH IMPACT PLASTIC HEAD WITH
RIBS TO PREVENT ROTATION WHEN REMOVING LOCKABLE CAP.
3. LOCKABLE CAP SHALL BE BRASS AND RATED FOR HS-20 LOADING
IN VEHICULAR AREAS. MOUNTED FLUSH TO GRADE. LOCKABLE
CAP MAY BE HIGH IMPACT PLASTIC THAT IS UV STABLE IN
NON -VEHICULAR LOADING AREA, AT LEAST 6 INCHES ABOVE GRADE.
4. IN FACILITIES SUBJECT TO VEHICULAR TRAFFIC. CONCRETE APRONS
AROUND CLEANOUTS ARE REOUIRE PER CITY OF DURHAM DETAIL 733.02
LOCKABLE CAP
SEE NOTE 3
PERMEABLE
PAVEMENT
6' SOLID
PVC PIPE
SEE NOTE
FINISHED GRADE
CLEANOUT WITH COUNTERSUNK
HEAD SEE NOTE 2
PIPE SEAL GASKET (TYP.)
STANDARD 6'X 6'
SUBGRADE
TEE CONNECTION
PERFORATED UNDERDRAIN
CLEAN OUT/OBSERVATION WELL DETAIL
FINISHED SURFACE
a
PERMEABLE a a a
CONCRETE 6
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#57 STONE
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IN SITU SOIL
NON PERFORATED
GEOTEXTILE FABRIC UNDERDRAIN BETWEEN
SEE PERVIOUS CONCRETE PERMEABLE PAVEMENT
SECTION DETAIL AND SD-7 (TYP.)
PERFORATED UNDERDRAIN (TYP.)
INSET A
USE AT SD-7
ADJACENT MATERIAL
(ASPHALT, EARTH,
° QQ OR OTHER)
° °oo
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0�8�°3
YA) 0 DOii4�D�0(i_ CURB AND/OR GUTTER
PERFORATED
UNDERDRAIN J
-SEE 62 1.5 1
ROAD / ALLEY SECTION
LEGEND
l0 PERVIOUS PORTLAND CEMENT CONCRETE
2Q RESERVOIR LAYER -57 STONE (DEPTH VARIES)
30 GEOTEXTILE FABRIC, SEE NOTE 1.
4Q SUBGRADE SHALL BE SCARIFIED TO A DEPTH OF 12' AND RECOMPACTED
BETWEEN 93 AND 95 PERCENT OF THE STANDARD PROCTOR MAXIMUM
DRY DENSITY AS DETERMINED BY ASTM D-698.
MINIMUM PAVEMENT THICKNESSES PLANS PREPARED BY:
PAVEMENT
ITEM
DIMENSION
O
B.
20
8' MIN.
Q
SEE NOTE 1
900 RIDGEFIELD DRIVE
SUITE 350
RALEIGH, NORTH CAROLINA 27609 3960
[phone], NC LICENSE NO. F-0112
NOTES: I. GEOTEXTILE FIIOAPPROVED OVERLAPPED PRELIMINARY
SPLICE POINTS NOT RESERVOIREXENTCsA S
r+ GEOTEXTILE SHALL BE PLACED THE BE BENEATH CURB/GUTTER DO NOT USE FOR CONSTRUCTION
AND BETWEEN 57 STONE AND ALL BAFFLES AT RESERVOIRS
2. TOP OF PAVEMENT SHOULD BE DESIGNED TO
ACHIEVE 1% MINIMUM SLOPE IN ANY DIRECTION.
3. FOR ROADWAY JOINT LAYOUT, REFER TO DDOT DWG. NO. 501.01.
FOR ALLEY JOINT LAYOUT, REFER TO DDOT DWG. NO. 503.01.
PERVIOUS CONCRETE SECTION DETAIL
BOTTOM OF
PERVIOUS
CONCRETE
CONCRETE CHECK DAM
6' WIDTH (8' WIDTH e
NOTES:
STA. 12+40)
- - - - -
- - - - -
- - - 1. LOCATIONS. HEIGHTS. AND WIDTHS OF CHECK DAMS
4' MIN.
TO BE SPECIFIED AS SHOWN DETAIL AND PLANS
"
2. CONCRETE CHECK DAM SHALL BE CONTINUOUS
i !Y
(NO JOINTS).
3. DEPTH OF CHECK DAM VARIES DEPENDING ON
THE DEPTH OF THE FACILITY.
UPPER RESERVOIR
4. BAFFLE SHALL CONNECT CURB FACES AT WEST
EXTENT OF PERMEABLE SECTION (STA.12+39.60)
LOWER RESERVOIR
MIN.
EXISTING SUBGRADE OR ROCK STORAGE
CONCRETE
BAFFLE
DETAIL
CURB AND GUTTER (TYP.)
A — 6" PVC THREADED CAP
WITH 0.5" ORIFICE DRILLED
AT INVERT NOTED ON TABLE
1 OF THIS DETAIL
)" GATE
VALVE
UNDERDRAIN TIE IN DETAIL AT SD-7
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TABLE 1 - OUTLET
STRUCTURE ELEVATIONS
RESERVOIR #
A
1
2
334.97
334.47
3
333.97
FRAME AND GRATES
PER NCDOT
SEE INSET A AND FOR
UNDERDRAIN TIE—IN DETAILS
SD-7
STEPS PER NCDOT
PLANS PREPARED FOR:
CITY OF
DURHAM
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REVISIONS
DRAWN BY: CHECKED BY:
PERMEABLE
PAVEMENT
DETAILS
C800