HomeMy WebLinkAbout234.50NOTES:
1.ACCESS ROADS SHALL BE LOCATED IN THE STORMWATER TRACT OR PUBLIC RIGHT-OF-WAY AND SHALL BE CONNECTED TO AN IMPROVED
PUBLIC RIGHT-OF-WAY.
2.MAINTENANCE ACCESS ROAD(S) SHALL BE PROVIDED TO THE CONTROL STRUCTURE AND OTHER DRAINAGE STRUCTURES ASSOCIATED WITH
THE POND (E.G., INLET, EMERGENCY OVERFLOW, OR BYPASS STRUCTURES). MANHOLE AND CATCH BASIN LIDS MUST BE IN OR AT THE EDGE OF
THE ACCESS ROAD AND AT LEAST THREE FEET FROM A PROPERTY LINE. RIMS SHALL BE SET AT THE ACCESS ROAD GRADE.
3.AN ACCESS RAMP IS REQUIRED FOR REMOVAL OF SEDIMENT WITH A TRACKHOE AND TRUCK. THE RAMP MUST EXTEND TO THE POND BOTTOM IF
THE POND BOTTOM IS GREATER THAN 1,500 SQUARE FEET (MEASURED WITHOUT THE RAMP) AND IT MAY END AT AN ELEVATION 4 FEET ABOVE
THE POND BOTTOM IF THE POND BOTTOM IS LESS THAN 1,500 SQUARE FEET (MEASURED WITHOUT THE RAMP), PROVIDED THE POND SLOPES
ARE 3H:1V OR FLATTER.
4.THE INTERNAL BERM OF A WETPOND OR COMBINED DETENTION AND WETPOND MAY BE USED FOR ACCESS IF IT IS NO MORE THAN 4 FEET
ABOVE THE FIRST WETPOOL CELL, IF THE FIRST WETPOOL CELL IS LESS THAN 1,500 SQUARE FEET (BOTTOM AREA MEASURED WITHOUT THE
RAMP), AND IF IT IS DESIGNED TO SUPPORT A LOADED TRUCK, CONSIDERING THE BERM IS NORMALLY SUBMERGED AND SATURATED.
5.ACCESS SHALL BE LIMITED BY A DOUBLE-POSTED GATE IF A FENCE IS REQUIRED, OR BY BOLLARDS. BOLLARDS SHALL BE DESIGNED IN
ACCORDANCE WITH THE CITY OF RENTON STANDARD PLANS.
6.ACCESS ROADS AND RAMPS SHALL MEET THE FOLLOWING DESIGN CRITERIA:
6.1.MAXIMUM GRADE SHALL BE 15% FOR ASPHALT PAVING AND 12% FOR GRAVEL.
6.2.OUTSIDE TURNING RADIUS SHALL BE 40 FEET MINIMUM.
6.3.FENCE GATES SHALL BE LOCATED ONLY ON STRAIGHT SECTIONS OF ROAD.
6.4.ACCESS ROADS AND RAMPS SHALL BE 15 FEET IN WIDTH ON CURVES AND 12 FEET ON STRAIGHT SECTIONS.
6.5.A PAVED APRON SHALL BE PROVIDED WHERE ACCESS ROADS AND RAMPS CONNECT TO PAVED PUBLIC ROADWAYS. THE APRON SHALL BE
CONSISTENT WITH DRIVEWAY DETAILS IN THE CITY OF RENTON STANDARD PLANS. SEE CONSTRUCTION PLANS FOR SPECIFIC PROJECT
REQUIREMENTS.
7.ACCESS ROADS AND RAMPS SHALL BE CONSTRUCTED WITH EITHER THE GRAVEL ROAD OPTION OR ASPHALT ROAD OPTION. WHERE ACCESS
ROADS AND RAMPS PASS OVER EMERGENCY OVERFLOW SPILLWAYS, AN HMA WEARING COURSE IS REQUIRED (SEE STANDARD PLAN 234.10).
8.SEE CONSTRUCTION PLANS FOR SPECIFIC PROJECT REQUIREMENTS.
4" CRUSHED
SURFACING TOP
COURSE (CSTC)
PER WSDOT STD.
SPEC 9-03.9(3)
12" QUARRY
SPALLS PER
WSDOT STD.
SPEC 9-13.1(5)
4" HOT MIX
ASPHALT (HMA)
6" CRUSHED
SURFACING
BASE COURSE
(CSBC) PER
WSDOT STD.
SPEC 9-03.9(3)
12' OR 15', SEE NOTE 6.4 12' OR 15', SEE NOTE 6.4
GRAVEL ROAD OPTION ASPHALT ROAD OPTION
WOVEN GEOTEXTILE FABRIC FOR
SEPARATION PER TABLE 3 FROM
WSDOT STD. SPEC 9-33.2(1)
ACCESS ROAD AND RAMP
STD. PLAN - 234.50
PUBLIC WORKS
DEPARTMENT
APPROVED:
DATEGregg Zimmerman
Public Works Administrator
UNLESS OTHERWISE NOTED, DRAWING IS NOT TO SCALE (NTS)
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9/28/2018 | 9:45 AM PDT