HomeMy WebLinkAbout215.00PLAN VIEW
ELEVATION VIEW
SECTION A
NOTES:
6" SEWER PIPE WITH BUTTERFLY VALVES
8'x8' SUMP WITH 5' OF CATCH
TO ACCOMMODATE
CLEANING BY TRACKHOE
3" TRASH PUMP WITH FLOATS ON SUCTION HOSE
2" SCH 40
1 1/2" SCH 40 FOR SPRAYERS
MIDPOINT SPRAY
NOZZLES, IF NEEDED
2% SLOPE5H:1V5H:1V2% SLOPE 1H:1V1H:1V15' ATB APRON TO
PROTECT GROUND FROM
SPLASHING WATER ATB CONSTRUCTION ENTRANCE
ASPHALT CURB ON THE LOW ROAD SIDE
TO DIRECT WATER BACK TO POND
6" SLEEVE UNDER ROAD
BALL VALVE (TYP.)
CURB
6" SLEEVE
15'15'20'15'50'
5'
18'
12'
3'
1
1
LOCATE INVERT OF TOP PIPE 12" TO
14" ABOVE BOTTOM OF WHEEL WASH
8'x8' SUMP TO ACCOMMODATE
CLEANING BY TRACKHOE
DRAIN PIPE WITH
BUTTERFLY VALVE
WATER LEVEL,
12" TO 14" DEEPA6" ATB OVER CRUSHED BASE MATERIAL
OR 8" ATB OVER A GOOD SUBGRADE 5% - 10%SLOPE1.CONDITIONS OF USE
1.1.WHEN A STABILIZED CONSTRUCTION ENTRANCE IS NOT PREVENTING SEDIMENT FROM BEING TRACKED ONTO PAVEMENT, WHEEL WASHING IS GENERALLY AN EFFECTIVE
EROSION AND SEDIMENT CONTROL METHOD AND BMP WHEN INSTALLED WITH CAREFUL ATTENTION TO TOPOGRAPHY.
2.DESIGN AND INSTALLATION SPECIFICATIONS
2.1.USE A LOW CLEARANCE TRUCK TO TEST THE WHEEL WASH BEFORE PAVING. EITHER A BELLY DUMP OR LOWBOY WILL WORK WELL TO TEST CLEARANCE.
2.2.MIDPOINT SPRAY NOZZLES ARE ONLY NEEDED IN VERY MUDDY CONDITIONS.
2.3.POLYACRYLAMIDE (PAM) ADDED TO WHEEL WASHWATER AT A RATE OF 0.25-0.5 POUNDS PER 1,000 GALLONS OF WATER INCREASES EFFECTIVENESS AND REDUCES
CLEANUP TIME. IF PAM IS ALREADY BEING USED FOR DUST OR EROSION CONTROL AND IS BEING APPLIED BY A WATER TRUCK, THE SAME TRUCK MAY BE USED TO
CHANGE THE WASHWATER.
3.MAINTENANCE STANDARDS
3.1.THE WHEEL WASH SHOULD START OUT EACH DAY WITH CLEAN, FRESH WATER.
3.2.THE WASHWATER SHOULD BE CHANGED A MINIMUM OF ONCE PER DAY. ON LARGE EARTHWORK JOBS WHERE MORE THAN 10 TO 20 TRUCKS PER HOUR ARE EXPECTED,
THE WASHWATER WILL NEED TO BE CHANGED MORE OFTEN.
3.3.WHEEL WASH OR TIRE BATH WASHWATER SHALL BE DISCHARGED TO A SEPARATE ONSITE TREATMENT SYSTEM, SUCH AS A CLOSED-LOOP RECIRCULATION SYSTEM OR
LAND APPLICATION, OR TO THE SANITARY SEWER SYSTEM WITH PROPER APPROVAL AND/OR PERMITS FROM KING COUNTY AND THE CITY OF RENTON.
WHEEL WASH AND PAVED
CONSTRUCTION ENTRANCE
STD. PLAN - 215.00
PUBLIC WORKS
DEPARTMENT
APPROVED:
DATEGregg Zimmerman
Public Works Administrator
UNLESS OTHERWISE NOTED, DRAWING IS NOT TO SCALE (NTS)
DocuSign Envelope ID: 6EECF5B6-602A-4E4A-B436-A317AA638878
9/28/2018 | 9:45 AM PDT