HomeMy WebLinkAboutConstruction Details pg1TYPICAL SANITARY SEWER SPECIFICATIONS
TO BE USED FOR PRIVATE SEWER DEVELOPMENT
WITHIN
CLAY TOWNSHIP REGIONAL WASTE DISTRICT
REVISED SEPTEMBER, 1999
1. Standard specifications of the Clay Waste District and Indiana Department of Transportation shall apply for
all work and materials. Pipe shall be installed in accordance with Section 715.
2. Sanitary sewer pipe shall be PVC in accordance with ASTM D -3034 (S.D.R. 35) and ASTM 2321. PVC pipe shall
have grooved bell and gasket. The pipe shall be made of PVC plastic having a cell classification of 124548.
3. PVC sewer fittings shall conform to the requirements of ASTM D- 3034 -89 specification. Fittings in sizes through
8" shall be molded in one piece with elastomeric joints and minimum socket depths as specified in sections 6.2 and
7.3.2. Fittings 10" and larger shall be molded or fabricated in accordance with section 7.11 with manufacturers
standard pipe bells and gaskets. Wall thickness of fittings shall be SDR 26 as defined in section 7.4.1 of
specifications. Gaskets for elastomeric joints shall be molded with a minimum cross - sectional area of 0.20 square
Inches and conform to ASTM F -477 specification. Fittings shall be manufactured by Harco or equal.
4. All sanitary manholes shall be "precast concrete" manholes in accordance with ASTM C -478 and Section 720.
0 -rings shall conform to C -443. Kent Seal or equivalent shall also be applied to all joints and between riser rings
and castings. Manhole step spacing shall be no more than 16- inches. Manholes shall be air tested for leakage in
accordance with ASTM C1244 -93, Standard Test Method for Concrete Sewer Manholes by the Negative Air Pressure
(Vacuum) Test.
A Installation and operation of vacuum equipment and indicating devices must be in accordance with manufacturer's
recommendations and performance specifications which have been provided by the manufacturer and accepted by the
Engineer.
2. With the vacuum tester set in place:
1. Inflate the compression band to forty (40) psi to effect a seal between the vacuum base and the structure.
2. Connect the vacuum pump to the outlet port with the valve open.
3. Draw a vacuum of ten (10) inches of Hg. and close the valve.
3. Accepted standards for leakage will be established from the elapsed time for a negative pressure change from ten
(10) inches to nine (9) inches of mercury. The maximum allowable leakage rate for a four (4) foot diameter
manhole must be in accordance with the following:
Minimum Elapsed Time for a
Manhole Depth Pressure Change of 1 Inch Hg
10 feet or less 60 seconds
>10 feet but <15 feet 75 seconds
>15 feet but <25 feet 90 seconds
For manholes five (5) feet in diameter, add an additional fifteen (15) seconds and for manholes six (6) feet in
diameter, add an additional thirty (30) seconds to the time requirements for four (4) foot diameter manholes. For
all manholes deeper than twenty -five (25) feet. Engineer will determine the applicable minimum elapsed time.
4. If the manhole falls the test, necessary repairs must be made and the vacuum test and repairs must be repeated
until the manhole passes the test.
5. If manhole joint sealants are pulled out during the vacuum test, the manhole must be disassembled and the joint
sealants replaced.
6. Manholes will be subject to visual inspection with all visual leaks being repaired.
5. Butyl rubber coating shall be applied around each manhole joint from 6- inches above to 6- inches below each
joint. The appropriate primer shall be applied prior to applying the rubber coating. Inside joints to be filled with
precoat plug material.
6. The manhole chimney's including all riser rings shall be sealed using Infi - Shield "Uniband" or approved equal. Prior
to placement, the top 4- inches of the manhole cone and casting frame shall be cleaned and primed. The Uniband
shall extend from 3- inches below the top of the cone section to 2- inches over the flange of the manhole casting
frame.
7. The casting elevations are set by plan. However, the castings are to be adjusted in the field by the Engineer's
representative, should a discrepancy occur between plan grade and existing grade. New manhole ring and cover shall
be installed to establish grade. Maximum height of adjusting rings shall be 12- inches.
8. Backfill around all structures and all cuts under paved areas with granular material. Trenches opening within
5 -feet of paved roadways shall be backfilled with granular material in accordance with Section 211. Backfill under
sidewalks shall be granular, unless the walks are constructed a minimum of 6 months after bockfill has been in
place.
9. The Contractor shall be responsible for verifying that all state highways, city, and county permits have been
obtained by the developer prior to start of construction.
10. The Contractor shall be required to furnish the developer's Engineer with a set of prints, marked in red pencil,
showing actual sewer location and invert, to include lateral location, depth and length. Such "as built" prints must
be received by the Engineer before the final contract payment can be authorized. The sanitary sewer laterals and
stubs termination shall be indicated on the surface with a metal fence post set immediately above the said
termination point.
11. All sanitary sewer lines upon completion will be required to pass a low pressure air test. Said test shall be conducted according
to ASTM 1417 -92, and shall be witnessed by an Engineer and a representative of the Clay Waste District. The testing shall be in
accordance with Table 1. Add 0.5 psig for each foot of water above the sewer line being tested.
12. Deflection tests shall be performed on all flexible* pipe after the final backfill has been in place at least 30 days. No pipe shall
exceed a vertical deflection dle 8eflection test results. ( *The following are considered non - flexible pipes: concrete pipe, ductile
iron pipe, and cast iron pipe). The deflection test shall be performed with a nine -point mandrel. Proving rings shall be available.
13. All mandrel testing shall be observed by a professional engineer representative for certification and a representative of the Clay
Waste District.
14. The ends of laterals are to be plugged tight with a braced plastic disc or cap capable of withstanding a low pressure air test
without leakage.
15. Bedding for flexible pipe shall be No. 8 crushed stone from 6- inches below the pipe to 12- inches above the pipe. Bedding for
rigid pipe shall be No. 8 crushed stone from 6- inches below the pipe to the spring line of the pipe and from this point to 12- inches
above shall be fill sand or equivalent. Manholes shall be placed on no less than 6- inches of No. 8 crushed stone bedding.
16. Water and sewer line crossings and separations shall be in accordance with Ten States' Standards.
17. Trench shall be opened sufficiently ahead of pipe laying to reveal obstruction, and shall be properly protected and /or barricaded
when left unattended.
18. No water shall be permitted to flow into the sanitary sewer system during construction. Contractor shall utilize a pump to keep
the water level below the pipe. Pump discharge shall be directed to a storm outlet. Any pipe entering existing sewers shall be
plugged with screw type mechanical, braced plug until such time as all tests on the sewers have been completed and the lines have
passed all punch lists.
19. All sewer laterals installed by the mainline Contractor shall be bedded the some as the main line sewer.
20. Forty -eight (48) hours notice shall be given to the Clay Regional Waste District prior to the start of sewer construction. Also,
48 hours notice shall be given prior to any testing done on the sewer.
21. Manhole castings shall be stamped "SANITARY SEWER" (Neenah Casting R 1642 or equal) and be self - sealing type. Waterproof
castings shall be Neenah R- 1916 -F1 and stamped "SANITARY SEWER ".
22. The minimum slope for sewer acceptance by the Clay Township Regional Waste District are:
Size of Pipe Minimum Constructed Slope
8 -inch 0.40%
10 -inch 0.28%
12 -inch 0.22%
15 -inch 0.15%
18 -inch 0.12%
23. The Contractor shall provide measurements of the slope of the sewer for each manhole section as construction progresses.
Such measurements shall be certified by a Registered Land Surveyor or Engineer and be available on -site for observation by the
District's Inspector. No more than three manhole sections can be constructed in advance of such measurements.
24. In the event the Contractor does not meet the minimum slopes, the sewer section and any other affected sewer sections shall
be reconstructed to meet such minimum slopes.
25. Water mains shall be of ductile iron Class 50 cement lined pipe, unless
otherwise noted in the plans.
A. Water lines shall be of ductile iron pipe, Class 50 cement
line water works grade.
B. Stop shall be those manufactured by Ford or Mueller Corporation with AWWA
taper thread, and with copper compression type fitting on outlet, or
equal.
C. Blow -off valves shall be those manufactured by Mueller Corporation
(HO10283 or H- 10291), or equal.
D. Angle valves at the end of water service stub are to be copper compression
type fitting also, and are to be protected with plastic bay over the
valve.
E. 1" tops in lines smaller than 4 inches shall be only by tapped tee or
tapping saddle. Water service lines should be marked on curbs with blue
paint. (Sewer lateral locations - red).
26. All water mains to be pressure tested for leakage and sterilized in
accordance with directions from Carmel Water Department.
27. No traffic will be allowed on prepared subgrade prior to paving.
28. All street construction within the lines of dedicated right -of -way shall be
in accordance with the Specifications of the County Highway Engineer.
29. Property line corners of street intersections are rounded by an arc having
a 20' radius. Property lines drawn hereon are carried to the P.I. of the
arc.
30. A temporary seeding mixture in the areas where stripping of fills have been
graded shall be seeded for silt and erosion protection. After grading all
construction areas are to be seeded as follows:
A. Swale seeding : Seed and fertilize within construction limits with 5# /acre
"Redtop" grass, 20# /acre "Rye Grass ", 20# /acre "Blue Grass ", 25# /acre
"Tall Fescue" grass, and 600# /acre 12 -12 -12 fertilizer.
B. Cut /Fill Seeding Along Paved Areas: Seed and fertilize with 25# /acre "Tall
Fescue" gross, 20# /acre "Rye Grass ", 15# /acre "Blue Grass" and 600# /acre
12 -12 -12 fertilizer.
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31. The location of houses (depicted by rectangles) show the pad elevation and /or
outside grade. The finished floor elevation is 8 inches higher, more or less
than the outside grade.
32. It shall be the responsibility of each contractor to verify all existing
utilities and conditions pertaining to his phase of the work. It shall also
be the contractors responsibility to contact the owners of the various
utilities before work is started. The contractor shall notify in writing the
owners and /or the engineers of any changes, errors, or omissions found on
these plans or in the field before work is started or resumed.
33. All drainage pipe and ditch outfalls to receiving streams shall be
constructed in accordance with drawings, subject however, to any modification
required by the City of Carmel at the time installation is completed and to
any adjustments needed for field conditions that could not be anticipated on
the design drawings.
34. Contractor to record dimensions measured along sewer line from nearest
manhole to each sanitary sewer lateral.
35. Contractor to record dimension of each water stub from nearest fire hydrant
measured along the water main.
36. The above locations of laterals, along with any other construction changes
are to be incorporated on the original construction drawings and record
drawings submitted to the City Engineer's Office as soon after completion of
construction as possible.
37. Contractor shall verify subsurface conditions prior to bidding.
38. "The engineer and /or owner disclaim any role in the construction means and
methods associated with the project as set forth in these plans."
I 26"
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1 24"
28 -1/2"
36"
SANITARY MANHOLE R -1642
NOT -TO -SCALE
BOTTOM OF TRENCH
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MANHOLE FRAME & GRATE
ON KENT SEAL OR EQUAL.
4' -0" DIA. PRECAST
REINFORCED MANHOLE
SECTIONS MEETING A.S.T.
STANDARD C -478.
MANHOLES SHALL BE AIR TESTED IN ACCORDANCE
WITH ASTM C1244 -93, STANDARD TEST METHOD
FOR CONCRETE SEWER MANHOLES BY THE NEGATIVE
AIR PRESSURE (VACUUM) TEST.
KENT SEAL OR EQUAL
VEEN RISER RINGS (TYP.)
JUST TO GRADE w/ FILLER RINGS
REQUIRED (4" MIN. /12" MAX.)
JPRECAST REINFORCED CONCRETE
MANHOLE CONE MEETING
A.S.T.M. STANDARD C -478.
MANHOLE SECTION JOINTS SHALL CONFIRM
TO A.S.T.M. C -443 w/ 0 -RINGS GASKET
/BETWEEN SECTION, PLUS 1/2" EXTRUDABLE
GASKET (KENT SEAL OR EQUAL)
PIPE TO MANHOLE GASKET
MEETING A.S.T.M. STND. C -443
SHALL BE CAST INTO MANHOLE
SECTION AT THE TIME OF
MANUFACTORING, GASKET SHALL
BE DESIGNED TO WITHSTAND UP
TO 30" OF WATER PRESSURE.
1 " F
. FT. '
- = --
• 4
BREAK OUT TOP HALF OF PIPE AFTER
PLACING CONCRETE BENCH WALL.
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TOP OF BENCHWALL SHALL BE AT MIN., 0
ELEV. EQUAL TO TE CROWN OF THE PIPE. 0
CONCRETE BENCH WALL (CLASS B)
BASE SHALL BE POURED IN PLACE
OR PRECAST BOTH SHALL HAVE
#4 BARS AT 12" O.C. EACH WAY
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GRANULAR LEVELING MATERIAL ( #2 STONE)
REQUIRED W /PRECAST BASE 6" MIN.
PRECAST REINFORCED CONCRETE
MANHOLE FOR SANITARY SEWER
NOT -TO -SCALE
4
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4-
4 4 D
IN D.
D 4/
i- 2500 psi CONCRETE
PERSPECTIVE VIEW - EARTH CUT AWAY
®TO BE USED WHEN CLEAR DISTANCE BETWEEN PIPES
IS 18" OR LESS, OR WERE NOTED ON THE DRAWINGS.
CONCRETE CRADLE
NOT -TO -SCALE
MIN. WIDTH L25 (O.D.) -12"
#8 CRUSHED STONE � N_ cV
HAND TAMPED OR WALKED -~, • -
IN TO 12" ABOVE PIPE. "t -
AND 8" BELOW PIPE
_ 90• _
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X18 CRUSHED STONE
BELL HOE EXCAVATED.
BEDDING DETAIL
NOT -TO -SCALE
NOTE:
ALL BEDDING & INTAIL BACKFILL
SHALL BE INSTALLED IN 8"
TO 12" BALANCED LIFTS
DX2 (MAX)
TRENCH WIDTH
6" PIPE
TAMPED IN PLACE _
#8 CRUSHED STONE
's X
' 90% -
6
SANITARY SEWER
SERVICE CONNECTION
NOT -TO -SCALE
BACKFILL WITH CLEAN
GRANULAR MATERIAL
PER REQUIREMENT OF
INDIANA DEPARTMENT OF
HIGHWAYS (MECHANICAL
COMPACTED TO 95%
PROCTOR DENSITY).
SHOULDER TOPSOIL. SEED
OR SOD AS REQUIRED TO
MATCH UGSTiNG
UNDISTURBED EARTH
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LIMITS OF FULL DOTH GRANULAR BACKFILL
SHOULDER SECTION CURB SECTION
SIDEWALK, TOPSOIL, SEED
OR SOD AS REQUIRED TO
MATCH txis -nNG
ALL CUTS MADE IN OR UNDER ANY ROAD SURFACE SHALL BE BACKFILLED
WITH GRANULAR MATERIAL WHERE A CUT EITHER TRANSVERSES OR PARALLELS
THE ROAD SURFACE. GRANULAR BACKFILL SHALL BE PLACED IN THAT PORTION
OF THE CUT. THE ENTIRE EXCAVATED AREA WITHIN THE RIGHT -OF WAY.
MATERIAL PLACEMENT AND COMPACTION SHALL CONFORM TO
GENERAL ORDINANCE NO. 24, 1985, SECTION 28 -328
i 3" TOPSOIL SEED OR SOD AS
REQUIRED 1`0 MATCH EXISTING
PAVEMENT SURFACE EXISTING GRADE
E
MCOMPACTED EARTH
BACKFILL USING
MECHANICAL
COMPACTION
EQUIPMENT
STANDARD FULL DEPTH GRANULAR
BACKFILL DETAILS
STANDARD PLAN 92 -01 & 92 -02
NOT -TO -SCALE
SANITARY SEWER SERVICE CON N ECTI ONT -TO -SCALE
NOT -TO -SCALE
MIN. SLOPE
SHALL BE
MAIN SEWER
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SHEET NO.
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