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GENERAL NOTES
1. ALL MATERIAL AND WORK SHALL BE IN ACCORDANCE WITH REQUIREMENTS OF THE
SOIL CONSERVATION SERVICE SPECIFICATIONS FOR CONSTRUCTION CONTRACT,
LATEST EDITION.
2. THIS STRUCTURE HAS BEEN DESIGNED IN ACCORDANCE WITH THE REQUIREMENTS
FOR THE LOAD FACTOR DESIGN, 1980, TR-67 (TECHNICAL RELEASE NUMBER 67)
OF THE U.S. DEPARTMENT OF AGRICULTURE, SOIL CONSERVATION SERVICE
DEPARTMENT.
3. DESIGN LIVE LOAD: I -IS 20-44-TRUCK IN ACCORDANCE WITH CURRENT ASSHTO
STANDARD SPECIFICATIONS FOR HIGHWAY BRIDGES, 1983.
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4. CONCRETE: Fc = 4000 PSI AT 28 DAYS.
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5. REINFORCING STEEL: Fs = 20,000 PSI.
6. ALL REINFORCING STEEL SHALL BE DEFORMED TYPE AND SHALL MEET THE RE-
QUIREMENT OF ASTM SPECIFICATION A615, GRADE 60.
7. ALL REINFORCING S'FEEL SHALL BE EPDXY COATED UNLESS NOTED OTHERWISE ON
PLANS.
8. REINFORCING STEEL SHALL HAVE A 2-INCH COVER UNLESS NOTED OTHERWISE ON
PLANS.
9. REFER TO REPORT TITLED IGEOTECHNICAL INVESTIGATION, BOX CULVERT, SOUTH-
WEST GRADY WAY RENTON, WASHINGTON, FOR THE CITY OF RENTON' PREPARED BY
GEOENGINEERS, INC. DATED OCTOBER 31, 1984, FOR COMPLETE INFORMATION OF
TEST HOLES, SOILS MECHANICS AND GEOLOGIC INFORMATION.
SUGGESTED CONSTRUCTION SEQUENCE
1. EXCAVATE AND CONSTRUCT NORTH 112 FEET OF REINFORCED CONCRETE BOX
CULVERT. THE EXCAVATIONS SHALL NOT EXPOSE THE EXISTING PILING SUP-
PORTING THE EXISTING SPRINGBROOK TRESTLE.
2. BACKFILL AROUND THE CULVERT CONSTRUCTED IN STEP 2.
3. CONSTRUCT TEMPORARY DETOUR FOR EXISTING S.W. GRADY WAY ON THE NORTH
SIDE OF EXISTING S.W. GRADY WAY ALIGNMENT.
4. DEMOLISH AND REMOVE EXISTING SPRINGBROOK TRESTLE.
5. CONSTRUCT REMAINING PORTION OF CULVERT.
6. BACKFILL AND REGRADE AROUND THE CULVERT TO REQUIRED FINISHED GRADES.
/VONWOVEN FILTER FABRIC
WRAP AT TOP � BOT T01\1-3�
ROADWAY,
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1NSPECIFICATIOS ZO L0 to "DIA. PVC,. (13OTAI 51DE5)
MAX. W.4 TERt IiVf EL. /4. OD FOLINDAT/ONJ �24'1O.D S TL . C,45/NG FXL TER FA B/�lG 5HA L � BE SU/TA BL E FOR
,BACIKF/LL SEPARATION OF THE DRAINFILL � SILTY NATIVE
k1ER/EY5/ZE�EL. --�'/8 D61CTLE IRDAI'/PEEL.925 �rE/o X5RII: SOILS WITPOUT PIPING. SPECIFICATIONS SHALL BE
w CI7YOFRENTION i SUBMITTED BY THE CONTRACTOR.
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O.ODOZ �_EL.0.09CELL2 CITY OF RENTON
NOTE : EL l.4 9 6- EL L 2
DEPARTMENT OF PUBLIC WORKS
Foe PLAA/5 AND PRoF/LES 011` T,Y�E 7_51VP0R4,ey Reinforced Concrete Box Culvert
DETOUR ROAD AND NZ:*W � Y. O,eADY 1�YA YC e t
�EFE� TO S�EET�S Demup/90,
EZ EkIA TION LAYOUT
tiORIZ.. I"ZO62 ALPHA ENGINEERS INC. - DATE FILE NO.
DRAWN RL/Q&K`JVN
r__A CIVIL & STRUCTURAL ENGINEERING CONSULTANTS /1 V/� SCALF/VOTE� FIELD BOOPAGE_
320 ANDOV>=R PARK EAST, SEATTLE WA 98188 CHEGKEC /KY- BOOK
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NO. REVISION BY APPR. DATE APPROVED SHEET�OF.;,dGL
DIRECTOR OF PUBLIC WORKS
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