HomeMy WebLinkAboutCD-801 Trench Backfilling & Resurfacing
MIN. 12" THICK AC CAP (8" ON LOCAL
RESIDENTIAL) OR 1" MORE THAN
EXISTING AC, WHICHEVER IS GREATER
AC REPLACEMENT
(SEE NOTE 6)
I- · I
EXISTING
GU HER
FINAL 2" AC PLUG
(SEE NOTE 13)
AC REPLACEMENT
(SEE NOTE 7)
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FINAL SAWCUT
LINE
TRENCH BACKFILL
(SEE DETAIL B)
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PARALLEL
TRENCH
INITIAL SAWCUT (TYP.)
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12" MIN. TYP. --l
(SEE NOTE 4)
TRANSVERSE OR LONGITUDINAL TRENCH
DETAIL "A"
PERMANENT
SURF ACING
(SEE DETAIL A)
TRENCH BACKFILL
(SEE NOTE 3)
12" MIN.
r~i U5% COMPACTION
0... N w (MAX. 6" LIFTS)
w
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1 ~ I D 11- D /3 OR 12" MIN.
53 ~ ~ TRENCH l-
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BACKFILL REQUIREMENTS
DETAIL "8"
TRENCH BACKFILLING AND RESURFACING
SCALE: NOT TO SCALE
DATE: SEPTEMBER 13, 2006
DRAWN BY: LDH
V:\CAD\NEW STANDARDS
~~7YJ;~?Lx.) SHEET 1 OF 2
, PUB~ WORKS DI;E;T~ CD-80l
NOTES:
1. ALL WORK IS TO BE DONE IN ACCORDANCE WITH CALTRANS STANDARD SPECIFICATION
AND lOR PROVISIONS.
2. MINIMUM COVER TO FINISH GRADE SHALL BE 36" FOR LOCAL STREETS AND 42" FOR
THOROUGHFARE STREETS.
3. TRENCHES SHALL BE BACKFILLED WITH CLASS 2 AGGREGATE BASE AND COMPACTED TO 95 %
RELATIVE COMPACTION (90% BELOW 5' DEPTH) AS TESTED BY CITY APPROVED LAB. NATIVE
MATERIAL BACKFILLED TO 90% COMPACTION MAY BE USED IN LANDSCAPED AREA.
4. 12" MINIMUM (AT LEAST 6" BEYOND ANY PAVEMENT DAMAGED BY TRENCH EXCAVATION).
5. BEDDING - 6" MINIMUM CLASS II AGGREGATE BASE AS APPROVED BY CITY ENGINEER.
PIPE ZONE - BACKFILLED WITH CLASS II AGGREGATE BASE TO 95% COMPACTION.
6. WHEN DISTANCE BETWEEN EDGE OF AC CAP AND LIP OF GUTTER IS 24" OR LESS, ASPHALT
PAVING SHALL BE REPLACED TO LIP OF GUTTER.
7. REMOVE AND REPLACE EXISTING AC WITH NEW AC IF PARALLEL TRENCH CUT IS WITHIN 2'.
8. IF STREET HAS BEEN OVERLAID WITH FABRIC, SPECIAL MEASURES, AS DIRECTED BY THE CITY
ENGINEER, SHALL BE TAKEN TO INSURE INTEGRITY OF FABRIC.
9. UNSUITABLE MATERIALS SHALL BE REMOVED WHEN DIRECTED BY THE ENGINEER AND
REPLACED WITH 3/4" CRUSHED ROCK OR GRAVEL.
10. PLACEMENT OF BACKFILL SHALL BE IN 6-INCH LIFTS EVENLY PLACED AND MECHANICALLY
COMPACTED TO RELATIVE DENSITY AS SPECIFIED.
11. INITIAL CUT IN THE STREET PAVEMENT SHALL BE EQUAL TO THE WIDTH OF THE TRENCH WITH
THE OPTION OF BEING JACKHAMMERED OR SAWCUT.
12. FINAL CUT IN THE STREET PAVEMENT SHALL BE ONE FOOT WIDER THAN THE TRENCH WIDTH
AS SHOWN IN THE STANDARD DETAILS AND SHALL BE MADE BY SAWCUTTING ONLY.
13. WEDGE GRIND (2" DEEP) A MINIMUM OF 1 FOOT ON EACH SIDE OF TRENCH OPENING.
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/fl.] FOR~
TRENCH BACKFILLING AND RESURFACING
SCALE: NOT TO SCALE
DATE: SEPTEMBER 13, 2006
DRAWN BY: LDH
V:\CAD\NEW STANDARDS
APPROVED:
~Afdd~~) SHEET 2 Of 2
PUB~ WORKS DIRECT CD-80 1