HomeMy WebLinkAboutC 507 Sanitary Sewer DetailO-RING GASKET BETWEEN ALL.
RISERS AND CONE SECTIONS
PLUS 1/2' EXTRUDABLE GASKET
MATERIAL (KENT SEAL OR EQUAL)
BASIC MANHOLE IS THE SAME
AS THE PRECAST MANHOLE
48" DIA.
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POLYPROPYLENE OR
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CONC. DAM
ADJUST TO SUIT PIPE
DIAMETER AND FLOW
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REBAR 0 12" o.c.
HWAYS
6 12 STONE BEDDING
PRECAST DROP MANHOLE
SA-8
NO SCALE
SANITARY SEWER
BENCH SLOPE = 1/2" PER FOOT
', STANDARD MANHOLE BENCHES
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v� NO SCALE SANITARY PIPES AND LATERALS
I 5' MIN. I
PROPOSED EDGE
OF PAVEMENT
THE CONTRACTOR SWILL BE AWARE
THAT IF THE TOP OF THE TRENCH IS
WITHIN 5 FEET (5') OF THE PROPOSED
FUTURE BACK OF CURB THAT GRANULAR
BACKFILL SHALL BE PLACED IN THE
EXCAVATION AND COMPACTED PER INDOT
SPECIFICATIONS FOR SUCH AREAS. THIS
DISTANCE WILL BE CHECKED AT RANDOM
INTERVALS DURING THE CONSTRUCTION.
EXISTING GRADE
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-20' X 60
SAFETY BOX
60'
`TRENCH DETAIL WITH SAFETY BOXDETAIL WITH SAFETY BOX
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NO SCALE
FLOWLINE
or
SEWER
BENCH/
G
NO SCALE ( CARMEL CLAY DISTRICT )
ICE EXCAVATED MATERIAL
MATERIAL TO BE COMPACTED #8 CRUSHED STONE
'OR ROCK OR OTHER INCOMPRESSIBLE
THE TRENCH SHOULD BE OVER
EXCAVATED A MINIMUM OF 6" AND REFILLED
W /f/8 CRUSHED STONE. ALL FILL IS TO MEET
CLAY TWP. REGIONAL WASTE DISTRICT STANDARD.
FLEXIBLE PIPE BEDDING DETAIL
NO SCALE
SANITARY SEWER
WATER MAIN
PLAN
VY MIN. 10 MIN.
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O SANITARY SEWER 7
`CLASS 22 MECH. JOINT
C.I. OR CLASS 2 D.I. PIPE LIk!CONC. COLLAR k COUPLINGS
FLEXIBI F C;OI1Pt_ING OR ADAPTOR USED WHEN LESS THAN
18" OR IN CASES WHERE
WATER IS BELOW SAN SEWER
ELEVATION
NOTES:
Water and sewer crossings and seperotions sholl be in accordance with
Ten State Standards and local codes.
There sholl be no physical connections between a public or private water
supply system and a sanitary sewer or appurtenances thereto which would
permit the passage of any polluted water into the potable supply. Sanitary
sewers shall be laid ten (10) feet horizontally from any existing or proposed
water line. The distance shall be measured edge to edge. In cases where it
is not practical to maintain a ten (10) foot seperation, the appropriate
reviewing agency may allow deviation on a case- by -cose basis if supported
by data from the design engineer. Such deviation may allow installation of
the sewer closer to a water main provided that the water main is in a
separate trench or on an undisturbed earth shelf located to one side of
the sewer, and at an elevation so the bottom of the water main is at
least 18 inches above the top of the sewer.
Sanitary sewers crossing water mains shall be laid to provide a minimum
vertical seperation distance of 18 inches between the outside of water main
and the outside of the sewer. This shall be the case where the water main
is either above or below the sewer. The crossing sholl be arranged so that
the sewer joints will be equidistant and as for as possible from the water
main joints. Where a water main crosses under a sewer, adequate structural
support sholl be provided for the sewer to prevent damage to the water main.
When it is impossible to obtain proper horizontal and vertical seperotion as
stipulated above, the sewer shot[ be designed and constructed equal to water
pipe. and sholl be pressure tested to assure water tightness prior to backfilling.
MIN. CROSSOVER & SEPARATION CROSSOVER & SEPARATION
cA_i^,
r / NO SCALE (WATER MAINS & .SANI. SEWERS)
2" LETTERS, RECESSED.
FLUSH WITH SURFACE
'SELF -
APPI
BUILDING SETBACK OR EASEMENT
NEENAH R -1642 OR EQUIVALENT, LINE. SEE PLAN FOR LATERAL LOCATIONS.
W/ SELF- SEALING APPLICATION.
WATERPROOF CASTINGS SHALL BE
NEENAH R- 1916 -F1 OR EQUIVALENT.
ALL CASTINGS TO BE STAMPED
"SANITARY SEWER ", �� / _ 2.0'_
BEARING SURFACE
35 7/8'
( DEPENDENT UPON O.D.
OF RING SECTION IN USE)
SECTION "A -A"
SANITARY SEWER
NO SCALE MANHOLE FRAME AND COVER
PLACE 112- DIA. EXTRU
PREFORMED GASKET MA
IN EACH KEYWAY -SEE DETAIL PLAN VIEW
NOMINAL 1/2" BUYTL RUBBER
BASE EXTRUDABLE PREFORMED
GASKET MATERIAL TYP.
ALL PIPE EXCEPT RISE PIPE SHALL
BE AT A MINIMUM GRADE of 1.00%
G4" 1. D. 1"
27 3/4" 34" O.D.
PRECAST CONCRETE ADJ.
GASKET DETAIL RING OR FLANGE OF CASTING. SECTION "A -A"
ADJUSTING RING DETAIL
SA'-28 NO SCALD
CONTRACTOR SHALL PLACE A 5'
POST EXPOSED 2' MINIMUM O
GRADE DIRECTLY ABOVE LATERAL
END. POST TO BE PAINTED RED
TO ASSIST IN LOCATING LOCATION.
'\
NOTE: DEPTH OF PIPE AT PROPERTY LINE TO
BE APPROXIMATELY 9' BELOW ESTABLISHED
GRADE EXCEPT WHERE A MIN. GRADE OF 3.0'
1.007E FROM MAIN SEWER FIXES A LESSER ,
DEPTH
6" PVC PLUG
SEALED IN PLACE
NOTE:
MAGNETIC LOCATOR TAPE
TO BE PLACED AT END OF
EACH LATERAL.
NOTE:
BEDDING REQUIREMENTS FOR
LATERALS SHALL BE THE SAME
AS FOR MAIN SEWER LINE.
FLOW
CONTRACTOR SHALL PLACE A 5'
POST EXPOSED 2' MINIMUM O
GRADE DIRECTLY ABOVE LATERAL
END. POST TO BE PAINTED RED
TO ASSIST IN VISUAL LOCATION.
NOTE: DEPTH OF PIPE AT PROPERTY LINE TO
3.0' BE APPROXIMATELY 9' BELOW ESTABLISHED
GRADE EXCEPT WHERE A MIN. GRADE OF
1.00% FROM MAIN SEWER FIXES A LESSER
DEPTH
- 6" PVC PLUG
SEALED IN PLACE
6" PVC PIPE PER SANITARY
SEWER SPECIFICATIONS (SDR 35)
PROPER CURVES SHALL
BE USED FOR ALL
ABRUPT CHANGES IN
LINE AND GRADE.
NOTE:
BEDDING REOUIREMENTS FOR
LATERALS SHALL BE THE SAME
AS FOR MAIN SEWER LINE.
SEWER MAIN
�0
LATERAL
ISOMETRIC PLAN
/X-5 MAX
MIN
MAIN
D DEEP LATERAL CONNECTION DETAIL
A-5A
NO SCALE
4"-12"
1/2"
CONCRETE MAY BE FLOWABLE MORTER
PER IN.DOT SPEC. 213 OR #2500
READY MIX CONCRETE.
NOTE:
MAGNETIC LOCATOR TAPE
TO BE PLACED AT END OF
EACH LATERAL.
LONG RADIUS CURVE
SEWER MAIN
FLOW _
THIS TYPE OF CONCRETE ENCASEMENT THIS TYPE OF CONCRETE ENCASEMENT
IS USED WHEN STORM SEWER IS IS USED WHEN EXCAVATING IS DW'
BELOW SANITARY SEWER WHERE SHOWN JUST ABOVE SANITARY SEWER ME iE
ON PROFILE. SHOWN ON PROFILE
SANITARY SEWER
CONCRETE ENCASEMENT DETAIL
CA I I
BUILDING SETBACK OR EASEMENT
LINE. SEE PLAN FOR LATERAL LOCATIONS.
2.0'
MINIMUM GRADE 1.00%
6" PVC PIPE PER SANITARY
SEWER SPECIFICATIONS (SDR 35)
ISOMETRIC
LONG RADIUS CURVE
PLAN
LATERAL CONNECTION DETAIL
NO SCALE
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NO SCALE
PLAN
NOTE:
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MANHOLE CONFORMS
TO ASTM C -478
JOINT CONFORMS TO
NEENAH R -1642 CASTING W SELF
PICK
ASTM C -443
SEALING LID & CONCEALED HOLES
AND STAMPED "SANITARY SEWER"
TC = ELEV. FINISH GRADE TO DRAIN
®UM RUBBER BASE EXTERIOR
11" MAX: AWAY FROM CASTING
BACKPLASTER MATERIAL. 1 /4 "t 3" MIN
1/16" MIN. THICKNESS FROM
PRECAST CONCRETE ADJUSTER RINGS 4"
2" BELOW TOP OF CONE TO
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THE BASE OF THE MANHOLE
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SEAL EACH JOINT W /BUTYL RUBBER BASE
ALL RISER AND CONE
SECTIONS, PLUS 1/2"
COATING 6' ABOVE & BELOW EACH JOINT
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PRECAST CONCRETE SECTIONS
FLOW CHANNELS THROUGH
MANUFACTURED GASKET OR
MANHOLES SHALL BE U- SHAPED
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LATERALS ENTERING MANHOLE SHALL
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TC. = TOP OF CASTING ELEVATION
NOTE : ALL MANHOLE SECTIONS WILL BE WATER PROOFED ON
THE OUTSIDE WITH SPARYED BITUMINOUS COATING.
SANITARY SEWER MANHOLE
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NO SCALE ( CARMEL CLAY DISTRICT )
ICE EXCAVATED MATERIAL
MATERIAL TO BE COMPACTED #8 CRUSHED STONE
'OR ROCK OR OTHER INCOMPRESSIBLE
THE TRENCH SHOULD BE OVER
EXCAVATED A MINIMUM OF 6" AND REFILLED
W /f/8 CRUSHED STONE. ALL FILL IS TO MEET
CLAY TWP. REGIONAL WASTE DISTRICT STANDARD.
FLEXIBLE PIPE BEDDING DETAIL
NO SCALE
SANITARY SEWER
WATER MAIN
PLAN
VY MIN. 10 MIN.
0
i
? I WATFR MAIN
+
0
O SANITARY SEWER 7
`CLASS 22 MECH. JOINT
C.I. OR CLASS 2 D.I. PIPE LIk!CONC. COLLAR k COUPLINGS
FLEXIBI F C;OI1Pt_ING OR ADAPTOR USED WHEN LESS THAN
18" OR IN CASES WHERE
WATER IS BELOW SAN SEWER
ELEVATION
NOTES:
Water and sewer crossings and seperotions sholl be in accordance with
Ten State Standards and local codes.
There sholl be no physical connections between a public or private water
supply system and a sanitary sewer or appurtenances thereto which would
permit the passage of any polluted water into the potable supply. Sanitary
sewers shall be laid ten (10) feet horizontally from any existing or proposed
water line. The distance shall be measured edge to edge. In cases where it
is not practical to maintain a ten (10) foot seperation, the appropriate
reviewing agency may allow deviation on a case- by -cose basis if supported
by data from the design engineer. Such deviation may allow installation of
the sewer closer to a water main provided that the water main is in a
separate trench or on an undisturbed earth shelf located to one side of
the sewer, and at an elevation so the bottom of the water main is at
least 18 inches above the top of the sewer.
Sanitary sewers crossing water mains shall be laid to provide a minimum
vertical seperation distance of 18 inches between the outside of water main
and the outside of the sewer. This shall be the case where the water main
is either above or below the sewer. The crossing sholl be arranged so that
the sewer joints will be equidistant and as for as possible from the water
main joints. Where a water main crosses under a sewer, adequate structural
support sholl be provided for the sewer to prevent damage to the water main.
When it is impossible to obtain proper horizontal and vertical seperotion as
stipulated above, the sewer shot[ be designed and constructed equal to water
pipe. and sholl be pressure tested to assure water tightness prior to backfilling.
MIN. CROSSOVER & SEPARATION CROSSOVER & SEPARATION
cA_i^,
r / NO SCALE (WATER MAINS & .SANI. SEWERS)
2" LETTERS, RECESSED.
FLUSH WITH SURFACE
'SELF -
APPI
BUILDING SETBACK OR EASEMENT
NEENAH R -1642 OR EQUIVALENT, LINE. SEE PLAN FOR LATERAL LOCATIONS.
W/ SELF- SEALING APPLICATION.
WATERPROOF CASTINGS SHALL BE
NEENAH R- 1916 -F1 OR EQUIVALENT.
ALL CASTINGS TO BE STAMPED
"SANITARY SEWER ", �� / _ 2.0'_
BEARING SURFACE
35 7/8'
( DEPENDENT UPON O.D.
OF RING SECTION IN USE)
SECTION "A -A"
SANITARY SEWER
NO SCALE MANHOLE FRAME AND COVER
PLACE 112- DIA. EXTRU
PREFORMED GASKET MA
IN EACH KEYWAY -SEE DETAIL PLAN VIEW
NOMINAL 1/2" BUYTL RUBBER
BASE EXTRUDABLE PREFORMED
GASKET MATERIAL TYP.
ALL PIPE EXCEPT RISE PIPE SHALL
BE AT A MINIMUM GRADE of 1.00%
G4" 1. D. 1"
27 3/4" 34" O.D.
PRECAST CONCRETE ADJ.
GASKET DETAIL RING OR FLANGE OF CASTING. SECTION "A -A"
ADJUSTING RING DETAIL
SA'-28 NO SCALD
CONTRACTOR SHALL PLACE A 5'
POST EXPOSED 2' MINIMUM O
GRADE DIRECTLY ABOVE LATERAL
END. POST TO BE PAINTED RED
TO ASSIST IN LOCATING LOCATION.
'\
NOTE: DEPTH OF PIPE AT PROPERTY LINE TO
BE APPROXIMATELY 9' BELOW ESTABLISHED
GRADE EXCEPT WHERE A MIN. GRADE OF 3.0'
1.007E FROM MAIN SEWER FIXES A LESSER ,
DEPTH
6" PVC PLUG
SEALED IN PLACE
NOTE:
MAGNETIC LOCATOR TAPE
TO BE PLACED AT END OF
EACH LATERAL.
NOTE:
BEDDING REQUIREMENTS FOR
LATERALS SHALL BE THE SAME
AS FOR MAIN SEWER LINE.
FLOW
CONTRACTOR SHALL PLACE A 5'
POST EXPOSED 2' MINIMUM O
GRADE DIRECTLY ABOVE LATERAL
END. POST TO BE PAINTED RED
TO ASSIST IN VISUAL LOCATION.
NOTE: DEPTH OF PIPE AT PROPERTY LINE TO
3.0' BE APPROXIMATELY 9' BELOW ESTABLISHED
GRADE EXCEPT WHERE A MIN. GRADE OF
1.00% FROM MAIN SEWER FIXES A LESSER
DEPTH
- 6" PVC PLUG
SEALED IN PLACE
6" PVC PIPE PER SANITARY
SEWER SPECIFICATIONS (SDR 35)
PROPER CURVES SHALL
BE USED FOR ALL
ABRUPT CHANGES IN
LINE AND GRADE.
NOTE:
BEDDING REOUIREMENTS FOR
LATERALS SHALL BE THE SAME
AS FOR MAIN SEWER LINE.
SEWER MAIN
�0
LATERAL
ISOMETRIC PLAN
/X-5 MAX
MIN
MAIN
D DEEP LATERAL CONNECTION DETAIL
A-5A
NO SCALE
4"-12"
1/2"
CONCRETE MAY BE FLOWABLE MORTER
PER IN.DOT SPEC. 213 OR #2500
READY MIX CONCRETE.
NOTE:
MAGNETIC LOCATOR TAPE
TO BE PLACED AT END OF
EACH LATERAL.
LONG RADIUS CURVE
SEWER MAIN
FLOW _
THIS TYPE OF CONCRETE ENCASEMENT THIS TYPE OF CONCRETE ENCASEMENT
IS USED WHEN STORM SEWER IS IS USED WHEN EXCAVATING IS DW'
BELOW SANITARY SEWER WHERE SHOWN JUST ABOVE SANITARY SEWER ME iE
ON PROFILE. SHOWN ON PROFILE
SANITARY SEWER
CONCRETE ENCASEMENT DETAIL
CA I I
BUILDING SETBACK OR EASEMENT
LINE. SEE PLAN FOR LATERAL LOCATIONS.
2.0'
MINIMUM GRADE 1.00%
6" PVC PIPE PER SANITARY
SEWER SPECIFICATIONS (SDR 35)
ISOMETRIC
LONG RADIUS CURVE
PLAN
LATERAL CONNECTION DETAIL
NO SCALE
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NO SCALE
Table I:
Time in Seconds Required For Pressure Drop From 3.5 PSIG to 2.5 PSIG
(Based on 0.003 cfm per sq. ft. and 2.0 cfm)
AIR TEST SCHEDULE
NO SCALE
6�
5
3'
TYPICAL 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 Deportment of
Highways sholl apply for all work and materials. Pipe sholl be installed in accordance
with Section 715,
2. Sanitary sewer pipe sholl 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 sholl be mode of
PVC plastic having a cell classification of 12454B.
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 elostomeric
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 the specifications. Gaskets for elostomeric 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 sdnitor'y manholes sholl be "precast concrete" manholes in accordance with
ASTM C -478 and Section 720. 0 -rings sholl conform to C -443. Kent Seal or
equivalent shall also be applied to all joints and between riser rings and castings.
Manhole step spacing shalt 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.
B. With the vacuum tester set in place:
1. Inflate the compression bond 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.
C. 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 on 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.
D. If the manhole foils the test, necessary repoirs must be made and the vacuum test
and repairs must be repeated until the manhole passes the test.
E. If manhole joint sealants are pulled out during the vacuum test, the manhole must
be disassembled and the joint sealants replaced.
F. 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 sholl be applied prior to
applying the rubber coating. Inside joints to be filled with precoot 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 costing frame.
7. The costing 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 grode. New manhole ring and cover shall be installed to establish
grode. Maximum height of adjusting rings shall be 12- inches.
8. Bockfill around all structures and all cuts under paved areas with granular material.
Trenches opening with 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 six months after backfill has been
in- place.
9. The Contractor shall be responsible for verifying that oil 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 sonitory sewer laterals and
stubs termination shall be indicated on the surface with a metal fence post set
immediately above 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 Cloy Waste District. The testing shall be in
accordance with Table 1.
12. Deflection tests shall be performed on all flexible* pipe after the final bockfill has
been in -place at least 30 days. No pipe shall exceed a vertical deflection of five
percent (5%) deflection 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 sholl be observed by a Professional Engineer 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 sholl 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 sholl be in accordance with Ten
States Standards.
17. Trench shall be opened sufficiently ahead of pipe laying to reveal obstructions, and
shall be property 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 sholl be given to the Clay Regional Waste District
prior to the start of sewer construction. Also, 48 -hours notice sholl be given prior to
any testing done on the sewer.
21. Manhole costings shall be stomped "SANITARY SEWER" (Neenah Costing 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 sholl 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.
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Table I:
Time in Seconds Required For Pressure Drop From 3.5 PSIG to 2.5 PSIG
(Based on 0.003 cfm per sq. ft. and 2.0 cfm)
AIR TEST SCHEDULE
NO SCALE
6�
5
3'
TYPICAL 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 Deportment of
Highways sholl apply for all work and materials. Pipe sholl be installed in accordance
with Section 715,
2. Sanitary sewer pipe sholl 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 sholl be mode of
PVC plastic having a cell classification of 12454B.
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 elostomeric
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 the specifications. Gaskets for elostomeric 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 sdnitor'y manholes sholl be "precast concrete" manholes in accordance with
ASTM C -478 and Section 720. 0 -rings sholl conform to C -443. Kent Seal or
equivalent shall also be applied to all joints and between riser rings and castings.
Manhole step spacing shalt 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.
B. With the vacuum tester set in place:
1. Inflate the compression bond 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.
C. 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 on 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.
D. If the manhole foils the test, necessary repoirs must be made and the vacuum test
and repairs must be repeated until the manhole passes the test.
E. If manhole joint sealants are pulled out during the vacuum test, the manhole must
be disassembled and the joint sealants replaced.
F. 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 sholl be applied prior to
applying the rubber coating. Inside joints to be filled with precoot 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 costing frame.
7. The costing 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 grode. New manhole ring and cover shall be installed to establish
grode. Maximum height of adjusting rings shall be 12- inches.
8. Bockfill around all structures and all cuts under paved areas with granular material.
Trenches opening with 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 six months after backfill has been
in- place.
9. The Contractor shall be responsible for verifying that oil 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 sonitory sewer laterals and
stubs termination shall be indicated on the surface with a metal fence post set
immediately above 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 Cloy Waste District. The testing shall be in
accordance with Table 1.
12. Deflection tests shall be performed on all flexible* pipe after the final bockfill has
been in -place at least 30 days. No pipe shall exceed a vertical deflection of five
percent (5%) deflection 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 sholl be observed by a Professional Engineer 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 sholl 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 sholl be in accordance with Ten
States Standards.
17. Trench shall be opened sufficiently ahead of pipe laying to reveal obstructions, and
shall be property 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 sholl be given to the Clay Regional Waste District
prior to the start of sewer construction. Also, 48 -hours notice sholl be given prior to
any testing done on the sewer.
21. Manhole costings shall be stomped "SANITARY SEWER" (Neenah Costing 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 sholl 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.
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