HomeMy WebLinkAbout33 31 00CORNELL DIVISION 33 - UTILITIES
Ithaca, New York SECTION 33 31 00 - SANITARY UTILITY SEWERAGE PIPING (OUTDOORS)
CLARA DICKSON HALL SANITARY UTILITY SEWERAGE PIPING (OUTDOORS)33 31 00 - 1
WASTE & STORM LINE REPLACEMENT DECEMBER 31, 2014
SECTION 33 31 00 SANITARY UTILITY SEWERAGE PIPING (OUTDOORS)
1.0 GENERAL
1.1 RELATED DOCUMENTS
A.Drawings and General Provisions of the Contract, including General and Supplementary Conditions and
other Division 1 Specification Sections, apply to work of this Section.
1.2 WORK INCLUDED
A.Work included under this Contract sh all include unde rground sanitary uti lity sewerage piping as shown
on the Drawings. Provide all materials, labor, services, inspections, permits and related work to furnish a
complete, operating, tested, functioning, documented underground sanitary utility sewerage piping
system including all work shown, specified or required for proper system operation including, but not
limite d to the follo wing:
1.Shutdown of existing sanitary mains at time appropriate to University operations.
2.Sanitary piping mains and laterals as shown.
3.Provide piping layout coordination.
4.Provide Plumbing Permits and Inspections.
5.Provide Owner’s Operation Instruction
6.Provide Operation and Maintenance Manuals.
7.Provide Guarantee.
8.Provide As-Built Drawings.
1.3 PERMITS AND INSPECTIONS
A.Division 33 shall be responsible to apply for, obtain and meet the requirements of all permits and
inspections required by authorities having jurisdiction for the work of Division 22. Division 22 shall pay
all fees associated with these permits and inspections.
1.4 SUBMITTALS
A.Submit under provisions of Section 01 33 00.
B.Product Data - Provide data indicating conformance to ASTM/AWWA codes, pipe material, sizes, class,
dimensions, joint type and accessories.
C.Manufacturer’s Installation Instructions - Indicate special procedures required to install Products
specified.
1.5 PROJECT RECORD DOCUMENTS
A.Submit documents under provisions of Section 01 78 39.
B.Submit marked up record plans including record location and length of pipe runs, connections, cleanouts,
manholes, and rim and invert elevations. Invert elevations to be of the pipe invert at a point where the
pipe enters or exists a structure.
CORNELL DIVISION 33 - UTILITIES
Ithaca, New York SECTION 33 31 00 - SANITARY UTILITY SEWERAGE PIPING (OUTDOORS)
CLARA DICKSON HALL SANITARY UTILITY SEWERAGE PIPING (OUTDOORS)33 31 00 - 2
WASTE & STORM LINE REPLACEMENT DECEMBER 31, 2014
C.Identify and locate on record drawings during the discovery of exposed uncharted existing utilities and
services.
1.6 FIELD MEASUREMENTS
A.Prior to start of construction, verify the field measurements and elevations that existing conditions are as
shown on Drawings. Notify Engineer of specific differences.
B.Prior to start of construction, verify by exploratory excavations that existing underground utility locations
and elevations are as shown on drawings or to confirm marked location and elevation of underground
utilities by the underground utility locating organization. Notify Engineer of potential interference and
allow Engineer sufficient time to determine any changes required as a result of such interferences.
2.0 PRODUCTS
2.1 SITEWORK
A.Sitework shall be performed in accordance with Division 31. Division 33, Utilities, shall bring earthwork
up to rough grade level and Division 32 shall provide topsoil, seeding and other finish work as required.
2.2 WATER
A.Water used in this work will be obtained by the Contractor and will be suitable for irrigation and free
from ingredients harmful to plant life. Hose and other watering equipment required for the work shall be
furnished by the Contractor.
2.3 PIPE
A.Cast-iron Pipe: 3" and larger
1.Service weight cast-iron pipe manufactured from gray cast-iron with a tensile strength not less
than 21,000 psi per ASTM A74. Compression gaskets shall comply with ASTM C564. All pipe
and fittings shall be domestic and marked with the Cast-Iron Soil Pipe Institute.
2.Fittings shall comply with ASTM A74 and shall be the same manufacturer as the pipe.
B.PVC Pipe: 4" and larger
1.Pipe shall be PVC with bell and spigot gasketed joints per ASTM D-3034. The pipe shall be
from PVC compound meeting the requirements of cell Class 12454-B per ASTM D-1784. Pipe
wall thickness shall correspond to the dimension ratio SDR-35 with pipe stiffness value of 46 psi
per ASTM D-2412.
2.Fittings shall be compatible with pipe and push-on type.
2.4 PIPE ACCESSORIES
A.Pipe Connections:
1.Male end of new sewer pipe to female end of existing pipe - Fernco donuts by General
Engineering Company; Ponoma Pipe Products; or equal.
CORNELL DIVISION 33 - UTILITIES
Ithaca, New York SECTION 33 31 00 - SANITARY UTILITY SEWERAGE PIPING (OUTDOORS)
CLARA DICKSON HALL SANITARY UTILITY SEWERAGE PIPING (OUTDOORS)33 31 00 - 3
WASTE & STORM LINE REPLACEMENT DECEMBER 31, 2014
2.Male end of new sewer pipe to male end of existing pipe - Fernco flexible couplings; Dresser
Model 360 “All-Around” pipe repair clamps in stainless steel; or equal.
B.Connections to Manholes - Provide rubber boot, Kor-N-Seal by NPC, Inc. or equal, around exterior of
pipe.
2.5 MARKER TAPE
A.Underground type plastic line marker: Provide standard permanent bright colored, continuous-printed
plastic tape, intended for direct-burial service, not less than 6" wide x 4 mils thick, with lettering
“SANITARY SEWER”, as applicable.
2.6 NEW PRODUCTS, SINGLE MANUFACTURER
A.All equipment, materials and products furnished shall be new unless specifically shown to be reused.
Where equipment, materials and products are used for similar purposes, they shall be provided by the
same manufacturer.
2.7 QUALITY ASSURANCE
A.All equipment, material s and products shal l conform to the applic able ANSI, ASA, NFPA, UL, AGA
and/or ARI standard. All electrical equipment shall be UL or ETL Listed.
2.8 WARRANTY
A.Provide one year manufacturers warranty on all equipment, materials and products. Where shown or
speci fied, provide manufact urers extend ed warr anty.
3.0 EXECUTION
3.1 AIR INTAKES
A.Contractor shall research the project site carefully to identify the existing air flow patterns throughout the
site and the location of all operable windows and air intakes.
B.Contractor shall not allow any vehicles to be started for the day, parked or left idling with 50 feet of any
air intake or opera ble window.
C.Contractor shall assure that hired trucks as well as the contractor’s trucks are well maintained, equipped
with non-leaking injectors and clean air kits.
D.Offending vehicles shall be permanently banned from the site.
3.2 LAYOUT
A.Employ licensed Surveyor to stake out all work. Accurately locate and maintain location of all drives,
paved areas, plantings, utilities, sidewalks, features, etc. Advise Engineer of any discrepancies, prior to
commencin g work.
CORNELL DIVISION 33 - UTILITIES
Ithaca, New York SECTION 33 31 00 - SANITARY UTILITY SEWERAGE PIPING (OUTDOORS)
CLARA DICKSON HALL SANITARY UTILITY SEWERAGE PIPING (OUTDOORS)33 31 00 - 4
WASTE & STORM LINE REPLACEMENT DECEMBER 31, 2014
3.3 NOTIFICATION
A.Notify Owner and local agencies, such as fire department, police, utility companies, Dig Safely, NY etc.,
that ha ve juri sdict ion pri or to st artin g any work.
3.4 PROTECTION
A.Provide and maintain all temporary barricades, fences, walkways, enclosures, signs and lighting as may
be required to carry on work in a safe and satisfactory manner for the protection for the public, workmen,
pavements and other installations in the area of operations. Any damage shall be fully repaired to the
satisfaction of the Engineer at no additional cost.
3.5 EXAMINATION
A.Verify that trench cut, excavated base and pipe bedding is ready to receive work and pipe bedding
dimensions and elevations are as indicated on Drawings.
B.All pipe, fittings, and specials shall be carefully inspected in the field before lowering into the trench.
Cracked, broken, warped, out-of-round, damaged joints, including damaged pipe linings or coatings or
otherwise defective pipe, fittings or specials, as determined by the Engineer, shall be culled out and not
installed. Such rejected pipe shall be clearly tagged in such manner as not to deface or damage it, and the
pipe shall then be removed from the job site by the Contractor at his own expense.
C.Any pipe showing a distinct crack with no evidence of incipient fracture beyond the limits of the visible
crack, if approved, may have the crack portion cut off by, and the expense of, the Contractor before the
pipe is laid so that the pipe used is perfectly sound and will form an approved joint. The cut shall be
made in th e sound barre l at a po int at least 12 inch es fro m the visib le limit s of the crack.
D.If authorized, cutting of the pipe shall be done in a neat and workmanlike manner without damage to the
pipe lining. All pipe cutting shall be done by means of an approved type of power cutter and in
accordance with manufacturer’s instructions. The use of hammer and chisel, or any other method which
results in rough edges, chipped or damaged pipe, is prohibited.
3.6 PREPARATION
A.The Contractor shall have on the job site with each pipe laying crew, all the proper tools, gauges, pipe
cutters, lubricants, etc., to handle, cut, pipe laying and join the pipe.
B.Prior to installing the foundation, trenches shall have all water removed and all work performed in a dry
trench.
C.All pipes, fittings or specials which are to be installed in the open trench excavation shall be properly
bedded in, and uniformly supported on pipe foundations, as shown on the Contract Drawings.
D.Flat-bottom trenches of required width shall be excavated to the necessary depth as required.
E.Bedding material shall be spread as shown on the Contract Drawings for the pipe foundation and each
layer shall be compacted until the required total depth of bedding has been built up.
CORNELL DIVISION 33 - UTILITIES
Ithaca, New York SECTION 33 31 00 - SANITARY UTILITY SEWERAGE PIPING (OUTDOORS)
CLARA DICKSON HALL SANITARY UTILITY SEWERAGE PIPING (OUTDOORS)33 31 00 - 5
WASTE & STORM LINE REPLACEMENT DECEMBER 31, 2014
F.Suitable holes or depressions shall be provided in the pipe bedding to permit adequate bedding of the
bells, coupling or similar pipe projections.
G.Compaction methods from the springline to the bottom of the pipe shall include hand tamping with T-
bars, flat heads, shovel slicing, commonly known as “chinking”. Mechanical compactors shall be used
alongside of the pipe once final grade has been established.
H.The Contractor shall perform his bedding operations with care to maintain line and grade.
3.7 SEWER LINES AND GRADES
A.The Contractor shall furnish all labor, materials, surveying instruments and tools to establish and
maintain all lines and grades.
B.Easement and property lines and staked center of manholes and other control lines necessary for locating
the wor k as well as eleva tions used in the des ign of th e work are shown on the Dra wings. Be nch marks
are shown on the Drawings.
C.The Contractor shall confirm the grade of pipe at not more than 25-foot intervals.
3.8 TOLERANCES
A.Pipes shall be laid to the lines and grades shown on the Drawings.
B.Pipe shall be straight between manholes or between points of connection to structures or pipes.
C.The grade of the sewer between manholes and from pipe length to pipe length shall not vary from the
design gr ade sho wn on the Contra ct Draw ings by more than 0.1 5 times t he desi gn grade, u nless a change
in grade has bee n order ed by the E ngineer , in whic h case t he same to leran ce shal l apply.
D.Invert elevations at any location shall not vary from the design elevations by more than 0.05 feet, unless a
change in invert elevation has been ordered by the Engineer, in which case the same tolerance shall
apply.
3.9 CONNECTION TO EXISTING STRUCTURES
A.Where sewers are to be connected to existing manholes or other structures, and where no stub or opening
has been provided for the connection, the Contractor shall core drill an opening of minimum diameter
through the side wall of the structure for inserting the pipe, at the required location and elevation.
B.In making connections to existing manholes or structures, care shall be taken to avoid damage to the
manhole or structure or allowing debris to enter the pipelines.
C.The pipe shall be positioned so that the end of the pipe is flush with the inside wall surface of the
structure. The mortar filler shall be neatly finished to be flush with the inside wall surface of the
structure.
D.Benchwalls in existing structures shall be altered to form a new trough so that the new connection will
enter the exist ing flow channel at 45 degree in the directio n of flow.
CORNELL DIVISION 33 - UTILITIES
Ithaca, New York SECTION 33 31 00 - SANITARY UTILITY SEWERAGE PIPING (OUTDOORS)
CLARA DICKSON HALL SANITARY UTILITY SEWERAGE PIPING (OUTDOORS)33 31 00 - 6
WASTE & STORM LINE REPLACEMENT DECEMBER 31, 2014
E.Benchwalls to be extended upwards to the top of pipes as shown on the Drawings.
F.Exist ing flow to be main taine d throu gh manhole or by bypas s pumping or piping.
3.10 TESTING
A.Test all systems as described herein. Provide all necessary equipment and gauges for making tests. Pay
all costs involved in making tests and adjustments.
B.Time of Tests: Before restoration of surfaces.
C.Correctional Action: When tests reveal that the line has faulty joints, joints that have leaked shall be
remade and the system retested.
D.Witnesses: Notify the City of Ithaca Plumbing Code Officer, Owner and Engineer at least 48 hours in
advance of the test so that they may be present at the test.
E.Sanitary System Test:
1.Lamp Test (Alignment) - Fill circumference of pipe must be visible from vault to vault.
2.Infiltration Test:
a.If groundwa ter at any point on the li ne is ob served to be more than fo ur (4) feet ab ove
the top o f the sewe r pip e, an infi ltr ati on te st sh all be pe rfo rmed o n the compl ete d syst em.
A “V” notch weir or similar flow device shall be placed at the leaving end of the section.
The maximum allowable flow of 50 gallons per inch of sewer diameter per mile of pipe
per day shall not be exceeded.
3.Exfiltration of Test (Water Test):
a.If groundwater at any point on the line is not observed to be more than four (4) feet
above the top of the sewer pipe, an exfiltration test shall be performed in sections on the
completed system. The Contractor shall plug the line on the lower end and fill the system
with water to a level 1" below the underside of the precast manhole cover.
b.Exfiltration shall not exceed 50 gallons per inch of sewer diameter per mile of pipe per
day plus 2.4 gallons per foot of manhole diameter per foot of head measured at the
botto m of the manh ole per day.
4.Exfiltration Test (Air Test):
a.An air t est sha ll be made by forci ng air in to the s ystem unti l ther e is a uni form gauge
pressure of 5 psig. There shall be no drop in pressure for a period of 15 minutes. The air
test is acceptable for sewer pipe only. All manholes or vaults shall be subjected to the
exfiltrat ion test state d or vacuum tested stated bel ow.
CORNELL DIVISION 33 - UTILITIES
Ithaca, New York SECTION 33 31 00 - SANITARY UTILITY SEWERAGE PIPING (OUTDOORS)
CLARA DICKSON HALL SANITARY UTILITY SEWERAGE PIPING (OUTDOORS)33 31 00 - 7
WASTE & STORM LINE REPLACEMENT DECEMBER 31, 2014
5.Negative Air Pressure (Vacuum) Test:
a.A vacuum test shall be made on precast sanitary structures to demonstrate the integrity of
the structure prior to backfill.
b.Preparation:
1)Plug all lift holes.
2)Plug all pipes entering the manhole and securely brace all pipes and plugs.
c.Test Procedure:
1)Install test head on manhole top per manufacturer’s recommendations.
2)A vacuum of 10" Hg shall be drawn on the manhole, the valve on the vacuum
lines shall be closed and the vacuum pump shall be shut off.
3)Measure the time for the vacuum pressure to drop to 9" Hg.
4)The test is acceptable if the time for the vacuum reading drop exceeds the values
in Table 1.
5)If the test fails, the manhole shall be repaired by an approved method and
retested.
6.Corrections:
a.If the leakage identified in Item 2, 3 or 4 above does not exceed the limits specified, then
the section tested in accepted.
b.If the leakage identified in Item 2, 3 or 4 above exceeds the limits specified, then the leak
must be located by the Contractor and repaired. The system shall then be re-tested until
an acceptance test is received.
c.All costs for testing and correction of deficiencies shall be borne by the Contractor.
d.The Engineer shall witness all tests.
CORNELL DIVISION 33 - UTILITIES
Ithaca, New York SECTION 33 31 00 - SANITARY UTILITY SEWERAGE PIPING (OUTDOORS)
CLARA DICKSON HALL SANITARY UTILITY SEWERAGE PIPING (OUTDOORS)33 31 00 - 8
WASTE & STORM LINE REPLACEMENT DECEMBER 31, 2014
TABLE 1 Minimum Test Time for Various Manhole Diameters in Seconds
Diameter, in.
Depth (ft)
30 33 36 42 48 54 60 66 72
Time, in seconds
<4 6 7 7 9 10 12 13 15 16
6 9 10 11 13 15 18 20 22 25
8 11 12 14 17 20 23 26 29 33
10 14 15 18 21 25 29 33 36 41
12 17 18 21 25 30 35 39 43 49
14 20 21 25 30 35 41 46 51 57
16 22 24 29 34 40 46 52 58 67
18 25 27 32 38 45 52 59 65 73
20 28 30 35 42 50 53 65 72 81
Time, in seconds
22 31 33 39 46 55 64 72 79 89
24 33 36 42 51 59 64 78 87 97
26 36 39 46 55 64 75 85 94 105
28 39 42 49 59 69 81 91 101 113
30 42 45 53 63 74 87 978 108 121
3.11 BACKFILL - SANITARY
A.Pipe Bedding - Sand preferred, #1 gravel or #1 crushed stone in high groundwater conditions.
B.First layer (around piping): Refer to trench details on Drawings.
CORNELL DIVISION 33 - UTILITIES
Ithaca, New York SECTION 33 31 00 - SANITARY UTILITY SEWERAGE PIPING (OUTDOORS)
CLARA DICKSON HALL SANITARY UTILITY SEWERAGE PIPING (OUTDOORS)33 31 00 - 9
WASTE & STORM LINE REPLACEMENT DECEMBER 31, 2014
C.Backfil l Above Pi pe Beddi ng:
1.Under paving or sidewalks, run-of-crusher fill per Table 4 of the SU Steam Station Standard
Specifications to bedding level required for sidewalks or drive reconstruction. Gravel to be
compact ed to meet H-20 Highway Lo ading.
2.Under grassy areas, fill with select native material with no stones larger than 4" and compacted in
lifts of 6" to a level 12" below finish grade. Place two 4"compacted lifts of select native material
with no stones larger than 2" in diamet er. Fil l remain ing 4"to grade with topsoil imported from
off site.
D.Compaction: See Specification Section 31 23 23.23.
E.During the backfill and compaction of the final materials, care must be taken to keep the materials from
mixing together.
3.12 CLEANING
A.Upon work completion remove from the site all tools, material, plant and rubbish of every sort, created
by this Pr ojec t. Leave p remises neat an d order ly.
3.13 ROUGH GRADING & RESTORATION
A.Subgrade: Depth below finished grade as required for topsoil or pavement.
B.Grades not otherwise indicated shall be uniform levels or slopes between such points and existing
finished grades. Abrupt change in slopes shall be rounded. No bump, ridge, or depression greater than
three inches will be allowed. Fill material shall be free from debris, perishable or combustible material,
sod, frozen earth, and other deleterious materials. Fill materials shall contain no stone having any
dimensions greater than 2", except areas indicated on the drawings or designated by the Engineer.
C.At completion of rough grading, obtain Engineer’s approval.
D.Provide Restoration per Division 32.
3.14 PIPE SCHEDULE
Service Pipe Fitti ngs Joints
Sanitary Unde rgro und - 4 " and
larger
Cast-Iron or PVC SDR-35
See Dra wings
Push-on
Joint
Push-on Joint,
Rubber Gaskets
***END OF SECTION 33 31 00***