HomeMy WebLinkAbout400.5REMOVE MANHOLE COVER,
FRAME, ADJUSTMENT RINGS
AND CONE (OR FLAT TOP)
TO A DEPTH OF AT LEAST
4 FEET BELOW THE FINISHED
GRADE ELEVATION.
f
A
CONCRETE PLUG
(MINIMUM OF 12" IN LENGTH)
NOTES:
IN ROADWAYS, RESTORE PER
STANDARD PLAN 110.1.
OUTSIDE OF ROADWAYS, RESTORE
TO MATCH THE ADJACENT AREA.
COMPACTED SAND,
GRAVEL BORROW OR CDF
CONCRETE PLUG
(MINIMUM OF 12" IN LENGTH)
a
DRAINAGE HOLE
(TYPICAL)
1. DRILL A MINIMUM OF 4 — 2" DRAINAGE HOLES IN THE BOTTOM OF THE MANHOLE.
2. PLUG ALL INCOMING AND OUTGOING PIPES WITH CONCRETE.
3. FILL THE MANHOLE WITH COMPACTED SAND, GRAVEL BORROW (SECTION 9-03.14(1)) OR CDF.
4. DEBRIS FROM BREAKING THE UPPER PORTION OF THE MANHOLE MAY BE MIXED
WITH THE FILL MATERIAL SUBJECT TO THE APPROVAL OF THE ENGINEER.
5. THE FRAME AND COVER SHALL BE SALVAGED AND ALL OTHER MATERIAL DISPOSED OF.
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STD. PLAN — 400.5
PUBLIC WORKSABANDON MANHOLE
DEPARTMENT
JANUARY 2011