Proposed Sanitary Sewer No. 3976
CIP 2001-26
DEER PARK/MATSON AVENUE RELIEF SEWER
Test borings that were drilled for this project have been indicated on the plans. Prospective Bidders are hereby notified that a copy of the test borings are available at the Plans Sales Desk, Room 100, Department of Sewers, Division of Wastewater Engineering, 1600 Gest Street, Cincinnati, Ohio 45204, upon execution of a "Test Boring Information Waiver of Liability".
The geotechnical report was not prepared for purposes of bid development and the accuracy of the report is limited. The Contractor should confer with a geotechnical engineer and/or conduct additional study, in the area, to obtain specific type of geotechnical information required for construction and for preparation of bids. The Contractor should not over rely on the construction recommendations included in the report. These recommendations in the report are not final and are developed principally from the judgment and opinion of the geotechnical engineer who prepared the report.
Rock cores are available for viewing upon request in Room 101, Department of Sewers, Division of Wastewater Engineering, 1600 Gest Street.
Before
construction is started, the Contractor shall submit a construction schedule to
the Engineer. This schedule shall outline the sequence in which the Contractor
proposes to conduct operations and shall be approved by Engineer before work is
started. It shall be the responsibility of the Contractor to uncover the
existing conduit as the first order of work in order to determine the elevation
and alignment of the exiting conduit. The Engineer shall determine if
adjustments are required. The schedule shall include calendar dates of start
and completion of each task of the work. The Contractor should consider the
following constraints in preparation of the construction schedule:
Construction
Constraints that should be considered prior to bidding include but are not
limited to the following:
In
accordance with 108.06 of the ODOT,
Construction and Material Specifications (CMS), and the City Supplement,
the Contractor shall plan and prosecute the work for completion and final
acceptance by the date for completion stated in the proposal.
Whenever
it becomes apparent from the current monthly progress evaluation and updated
schedule data that any milestone and/or date for completion will not be met,
the respective Contractor shall take some or all of the following actions:
In
addition of equipment or construction forces, increasing the working hours or
any other method, manner or procedure to return to the current Detailed
Schedule shall be at the respective Contractor’s own cost and shall not be
considered justification for a Change Order or treated as an acceleration
order.
LIQUIDATED DAMAGES
Per the requirements of
Section lll.F, “Binding Effect”, of the
“Interim Partial Consent Decree for Sanitary Sewer Overflows”, the Metropolitan
Sewer District of Greater Cincinnati (MSD) hereby notifies the Contractor of
the following:
On February 15, 2002, the
United States EPA, United States Department of Justice, and the State of Ohio
lodged with the United States District Court for the Southern District of Ohio
Western Division, an “Interim Partial Consent Decree for Sanitary Sewer
Overflows”. Copies of the Consent
Decree are available from the Metropolitan Sewer District of Greater
Cincinnati, Regulatory Response Unit, 1600 Gest Street, Cincinnati, OH
45204.
Liquidated damages per
109.12 of the City of Cincinnati Supplement shall be assessed to the Contractor
for failure to complete construction by the end of April 30, 2005. Beginning
May 1, 2005, the assessments will be applied, as follows, until construction is
complete:
1 - 30 days $1,500/day
31 - 60 days $3,000/day
The
work shall be in accordance with the requirements to the General Provisions of
the City of Cincinnati Supplement, 2002 edition.
A. Scope: Sanitary Sewer Construction
B. The Contractor shall at all times conduct the work safely in order
to assure a safe work site. The Contractor shall be responsible for the safety
of the Contractor’s employees, agents and subcontractors, City personnel and
all other personnel or persons at the work site. The Contractor shall be
responsible for the adequacy and safety of all construction methods or
procedures and the safe prosecution of the work.
C. The Contractor shall be responsible at all times to conduct the
work and keep the work site in compliance with federal, state and local safety
laws and regulations, including but not limited to Occupational Safety and
health Administration (OSHA) requirements.
D. The Contractor shall be responsible to suspend work whenever a work
method or procedure or a condition at a work site is unsafe.
E. The Contractor shall submit a written notification to the City of
any accident or injury. The Contractor shall also send written notification of
all accidents and injuries to the Employee Safety Division. Such notification
shall include the Contractor’s investigation and what measures are appropriate
to avoid such accidents. Payment applications will not be authorized until such
notice is provided.
F. The Contractor will conduct Site Safety Audits on a periodic
basis, to be determined by the MSD Project Engineer. The audit shall be
performed using the Audit Checklist incorporated in the City Supplement. The
Contractor’s safety representative will perform the audit with the City’s
authorized representative in attendance. A copy of the completed Audit
Checklist shall be furnished to the City.
G. None of the provisions of this section are intended to nor shall be
construed to create any duty or responsibility on the City to provide or
enforce safety requirements for the Contractor. The duty, responsibility and
liability for safety, shall remain with the Contractor.
B. Should specified reference standards conflict with Contract
Documents, request clarification from the City or the City’s Authorized
Representative before proceeding.
C. The contractual relationship of the parties to the Contract shall not
be altered from the Contract Documents by mention or inference otherwise in any
reference document.
D. Comply with all applicable requirements of the Occupational Safety
and Health Administration (OSHA).
E. Conform to all applicable requirements of the City of Cincinnati
Supplemental sections 107.07, and 107.071, issued as an amendment to Ohio
Department of Transportation (ODOT) regulations.
A. The Contractor is advised to consider the job specific elements of
the work when preparing and executing the safety plan.
B. The Contractor shall make his own site investigation and
evaluation for job or site-specific safety concerns in addition to those listed
herein.
C. The following should be considered in preparation of the safety
plan specific to the work governed by this contract. The list does not limit,
evaluate or influence the means and methods of construction.
1. MAINTAINING SAFETY IN WORK ZONE.
2.
PROTECTION
OF PEDESTRIANS (barricades, signs, sidewalk closures & temporary walkways).
3.
TRAFFIC
MAINTENANCE.
4.
CONSTRUCTION
PARKING AND ACCESS.
5.
STORAGE
OF EQUIPMENT AND MATERIALS.
6.
DUST
CONTROL.
7.
WORKING
IN TRENCHES (OSHA soil classification, groundwater & utility crossings).
8.
MOVING
AND LIFTING OF PIPING MATERIALS.
9.
CONFINED
SPACE ENTRY (manholes & sewer connections).
10.
FIRST
AID.
11.
ELECTRICAL
(temporary power & extension cords).
12.
SANITATION.
13.
FIRE
PROTECTION.
14.
TEMPORARY
PUMPING.
15.
“HOT
WORK PERMIT” (obtain before use of sparking or open flame equipment).
THE
ABOVE LIST IS NOT INTENDED TO BE AN ALL-INCLUSIVE LIST AND THE CONTRACTOR IS
RESPONSIBLE FOR SAFETY IN ALL AREAS WHETHER LISTED ABOVE OR NOT.
Following award of the Contract and before starting any work, the Contractor, the Contractor’s Superintendent, and Foreman shall meet with the Engineer, the Field Engineer and the Inspector in the office of the Engineer for a preconstruction meeting. The Contractor will be notified of the date and the time of the meeting.
The Contractor shall be
responsible for maintaining “local” traffic at all times and for notifying the
proper authorities regarding the closing of roads.
It is the intention to
perform the required work with the least inconvenience to, and maximum safety
of the Contractor and the traveling public.
The Engineer must approve any variances from these Maintenance of
Traffic notes in advance, in writing.
The Contractor shall not
begin work until standard barricades and warning signs are in acceptable
position and the markers and signs conform to the "Ohio Manual of Uniform
Traffic Control Devices for Streets and Highways". The cost of all traffic
control devices shall be included in the various contract items.
The Contractor shall maintain
local traffic at all times during construction of this project in a manner
causing the least amount of inconvenience to the abutting property owners. Temporary Driveways, Temporary Roadways, or
Turn-Arounds as may be necessary to provide vehicular access to and from the
abutting properties shall be constructed, maintained and subsequently removed
by the Contractor, as directed by the Engineer.
MSD will obtain, process and
pay for all required street opening permits.
Any cost for inspection and testing required by jurisdictional agencies,
in addition to that supplied as part of the street opening permit, will be
billed to and paid by MSD, excluding penalty charges for delays due to the
Contractor's operations.
When excavating in the
street pavement, the portion of the street pavement not in the sewer main
construction shall be kept clear of all excavated material. Only a portion of the trench shall be
excavated at a time and closed again with bank run gravel, before the pavement
over the balance is removed, as directed by the Engineer.
All pavement and/or right‑of‑way openings within the public right‑of‑way must conform to the current edition of the State of Ohio, Department of Transportation, Construction and Material Specifications, with supplements or changes thereto. Also, the Contractor assumes all responsibilities and liabilities regarding strict adherence to applicable sections for the Maintenance of Traffic and Public Safety as set forth in the "Ohio Manual of Uniform Traffic Control Devices for Streets and Highways". All traffic control devices must be in place prior to starting construction.
The Contractor shall save
harmless the City of Deer Park, City of Cincinnati and the Board of County
Commissioners of Hamilton County and all its representation from all suits,
actions, or claims of any character brought on account of any injuries or
damages sustained by any person, or persons, or property in consequence of this
construction project due to construction operations.
Police, Fire and School Bus
access shall be maintained at all times.
If at any time traffic has to be blocked, the Contractor shall notify
the City of Deer Park, local Police District, Fire Division and School District
Transportation Office.
Work along E. Galbraith Road from Gwilada Drive to Gail Avenue and
along Plainfield Road from Matson Avenue to Schenck Avenue shall be between the
hours of 9:00 a.m. and 4:00 p.m.
The cost of the maintenance
of traffic shall be included in the various contract items.
The Contract Drawings show
all underground utilities, water, gas, and sewer lines known to exist. However,
this does not guarantee that all existing lines and appurtenances have been
shown on the Contract Drawings, and the City of Deer Park, City of Cincinnati
and MSD assume no responsibility for the accuracy thereof and do not free the
Contractor from necessary precautions for the protection of any utility
encountered on the project or the restoration of any utility damaged during the
work. It shall be the responsibility of the Contractor to uncover the existing
utilities as the first order of work in order to determine their elevation and
alignment.
The Contractor shall notify,
at least 48 hours before breaking ground,
all public and/or private service corporations having wire, poles, pipes,
conduit, manholes or other structures that may be affected by this operation,
including all structures which are affected and not shown on the Contract
Drawings. Owners of underground
utilities, which are members of the Ohio Utilities Protection Service, can be
notified by calling 800‑362‑2764
(toll free). Non‑member
underground utility owners must be called directly.
Supporting and/or protecting existing water lines, gas mains, telephone conduit, guy lines, electric/telephone poles, storm sewers, etc., shall be included in payment for the various contract items of work.
All work required for the
maintenance of service of existing utilities shall be done by, and at the
expense of the Contractor.
All maintenance, repair
and/or replacement of existing utilities shall be in accordance with the Rules
and Regulations of the various utility companies having jurisdiction.
All existing storm sewers,
driveway drains, and other surface drain pipes, whether shown on the Contract
Drawings or not, removed or damaged during construction shall be repaired and
reconnected by the Contractor, as directed by the Engineer, at no cost to the
City.
It is assumed that there are water and gas branch lines, etc., serving each residence. The Contractor shall repair or replace these utilities, if damaged, at no cost to the City.
It shall be the Contractor's
responsibility during the construction of this project to work equipment around
poles, trees, or other obstructions which permit the passage of the bucket and
boom but prevent passage of other portions of the equipment and, if necessary,
to excavate from both sides of the poles, trees, or other obstruction, and to
remove materials by hand labor, tunneling, or by other means, all at the
Contractor’s own expense.
It is the intent of these Detailed Provisions to provide a procedure for keeping the restoration of seed and sod areas and driveways current with the installation of the sewer pipe. This will be considered a part of the sewer installation and failure to keep restoration of these items completed reasonably close to the installation of the sewer pipe shall be cause to delay payment for sewer pipe installed until such restoration is completed to the satisfaction of the Engineer.
It shall be the
responsibility of the Contractor to make timely requests of the City for any
additional information not already in the Contractor’s possession and which
should be furnished by the City under the terms of this Contract, and which
will be required in the planning and execution of the work. Such requests may be submitted from time to
time as the need approaches, but each shall be filed in ample time to permit
appropriate action to be taken by all parties involved so as to avoid delay.
Each request shall be in
writing, and list the various items and the latest day by which each will be
required by the Contractor. The first
list shall be submitted within two (2) weeks after contract award and shall be
as complete as possible at that time.
The Contractor shall, if required, furnish promptly any assistance and
information the Engineer may require in responding to these requests of the
Contractor. The Contractor shall be
fully responsible for any delay in work, or to the work of others, arising from
failure to comply with the provisions of this section.
The Contractor shall not
trespass upon or in any way disturb property outside the street right‑of‑way,
or outside the limits of construction, without first obtaining written
permission from the owner to do so. A
copy of such written permission shall be furnished to the Engineer.
If the Contractor finds it
necessary to obtain additional working area, it shall be the Contractor’s
responsibility for its acquisition. All
requirements listed under the "Use of Premises" shall apply if
additional area is obtained.
The Contractor shall, at the
Contractor’s expense, restore such property to the full satisfaction of the
owner, and shall obtain from the owner a written release stating that
restoration has been satisfactorily made.
A copy of the written release shall be furnished to the Engineer.
The Contractor shall not
waste any excess earth, stone, or other excavated material on any property
without first obtaining written permission from the owner of the property and
securing the approval of the Engineer.
One copy of the owner's written permission, and one copy of a written
release from the owner stating that the work has been completed satisfactorily,
shall be furnished to the Engineer.
All items within the
construction limits and the street right‑of‑way shall be removed,
or removed and replaced, or restored as required by the Contract Drawings and
Specifications, as directed by the Engineer.
PROTECTION OF TREES
The Contractor shall take precautions to avoid any unnecessary damage to trees. Branches which overhang the construction limits and which interfere with the operation of equipment shall be tied back to avoid damage, if possible. Where injury to branches is unavoidable, the branches shall be sawed off neatly at the trunk or main branch and the cut area shall be painted with an approved tree paint immediately. Any trees damaged beyond saving shall be removed by the Contractor at the Contractor’s expense, and in the case of trees located on private property, the Contractor shall make restitution to the owner.
It will be the
responsibility of the Contractor, throughout the tenure of this contract, to
provide and maintain sufficient flow at all times to pass any flash or storm
flow of drainage ditches, creeks, streams and rivers, and to prevent any
backwater flooding due to obstruction caused by construction equipment and/or
materials.
The Contractor shall
maintain sewage flow of the sewer main at all times during construction of the
proposed conduit by by-pass pumping or diverting sewage flow into temporarily
installed conduit. The pumps or conduit
used to maintain flow must be of adequate size to prevent surcharging of the
existing sewer. This cost shall be
included with the various 603 items.
The Contractor shall be
responsible for prohibiting storm or subsurface water from entering the
sanitary sewer during construction as may be caused by flash floods, heavy
rains, etc.
The cost of this work shall
be included in the unit price bid for the various contract items.
Any fences, signs, mailboxes, and guardrails that need to be removed to facilitate sewer construction operations shall be replaced, in kind or with repairs satisfactory to the owner, at the Contractor's expense. Replacement of fences, signs, mailboxes and guardrails shall be considered a part of the sewer installation and shall be done immediately after the installation and backfilling of the sewer. The costs for the removal and replacement shall be included in the price bid for the various contract items.
All restoration shall be
completed in strict accordance with the appropriate items of the
Specifications, as directed by the Engineer.
The cost of all restoration
of streets, drives, walks, sod, etc., shall be included in the various items of
the Contract. When restoring walks, curb ramps shall be constructed
at intersections where the existing walk has been disturbed. Contact the jurisdictional agency for curb
ramp requirements.
All drainage ditches
disturbed by the Contractor’s work shall be restored, reshaped and graded to
drain properly.
All disturbed areas shall be
restored as nearly as practical to the condition they were prior to
construction.
Pavement restoration shall
be in accordance with the “Typical Restoration Section” and the provisions of
the Governing Agency responsible for the particular road, as directed by the
Engineer.
The restoration of sunken
trenches shall be the Contractor's responsibility. Sunken areas shall be backfilled and compacted to meet adjoining
grades and the surface area reseeded, or resurfaced with asphalt or concrete
matching the existing surfacing. The
Contractor's responsibility for this item shall be under the terms of, and for
the duration of, the guarantee defined in 109.12 of the City Supplement.
The Contractor shall restore
unpaved areas by seeding and mulching (Item 659) unless otherwise noted
herein. Commercial fertilizer shall be
used and shall have a chemical analysis of 12‑12‑12. The fertilizer shall be delivered to the
project site in manufacturer's containers, unopened. The container, or an attached tag, shall have printed upon it the
manufacturer's name and the chemical analysis of the contents.
Driveways shall be restored in kind or with two (2) inches
of Asphalt Surface Course (Item 448) on a six (6) inch Aggregate Base (Item
304) or with seven (7) inch thick Plain Non-Reinforced Concrete Pavement Portland
Cement Concrete Pavement (Item 452).
Concrete walks shall be restored with a five (5) inch thick Plain
Portland Cement Concrete Walk (Item 608).
This item shall be constructed as shown on the plans and as directed by the Engineer. Fill, seal and abandon the existing 15” sewer in accordance with the method described in section 202.041 of the Cincinnati Supplement to the State of Ohio, Department of Transportation, Construction and Material Specification.
This item will be used in other areas only when directed
by the Engineer. Payment will be based
on the unit price bid per cubic yard.
Sewers that are to be abandoned shall be plugged or sealed where they join manholes, catch basins, or inlets. All existing sewers encountered in construction operations that are inactive, or are to be abandoned as determined by the Engineer, shall be plugged or sealed at both ends where broken into, before proceeding with backfilling.
Where
plugging or sealing is required, pipe 12-inches or less in diameter shall be
sealed by the installation of a suitable precast concrete or vitrified clay
stopper, properly cemented into place. Pipe or masonry sewers larger than
12-inches in diameter shall be sealed at the required locations by the construction
of a masonry bulkhead of brick, stone, or concrete having a thickness of
one-half of the sewer diameter, except that the minimum thickness shall be
12-inches and the maximum thickness shall be 24-inches.
Manholes shall be abandoned in accordance with Item 202.11 of the State of Ohio (ODOT) Construction and Material Specifications. All castings shall be disposed of at the Contractor’s expense. This item shall include all sanitary manholes to be abandoned as shown on the plans or as directed by the Engineer.
This is a contingency item.
This item will be used only
when directed by the Engineer.
This is a contingency item.
Only special fill material
not included in other pay items shall be measured for payment.
This is a contingency item.
The Contractor, only as
directed by the Engineer, when this particular type of material is required in
the work, shall furnish No. 3 Gravel Bedding meeting the requirements of Item
703.11 of the State of Ohio (ODOT) Construction and Material
Specifications.
This is a contingency item.
Only special Class
"C" Concrete Masonry not included in other pay items shall be
measured for payment, as directed by the Engineer.
This is a contingency item.
Only special Class “C” concrete masonry used for encasement, cradles, key blocks and collars, in addition to those items called for in the plans, shall be measured for payment, as directed by the Engineer.
All backfill operations required under these items shall be in accordance with the City of Cincinnati Supplement to the State of Ohio (ODOT) Construction and Material Specifications, Item 603.017, except as otherwise noted herein. All requirements of these items shall be strictly adhered to by the Contractor and enforced by the Department of Sewers.
The price bid for these
items shall be complete, and shall include all necessary clearing; excavation;
embankment; dewatering; maintaining existing sanitary flow; sheeting;
preparation of trench bottom; granular bedding and initial backfill; pipe;
joint material; backfill; testing; disposal of waste material; dust, odor and
noise control; traffic control; lights, signs and barricades; cleaning up; saw
cutting; and concrete encasement.
Stub lengths shall be included and paid per foot of conduit specified.
Partial payments for these
items shall be paid by the Metropolitan Sewer District in accordance with the
following schedule:
Eighty-five percent (85%) of the unit price bid for Jacking and Boring
shall be paid for pipe installed as per plans.
Eighty percent (80%) of the unit price bid for Type “C” and Type “G”
Conduit shall be paid for pipe installed, including initial backfill.
Seventy percent (70%) of the unit price bid for Type “B” Conduit shall
be paid for pipe installed, including initial backfill.
An additional ten percent (10%) of the unit price bid for Jacking and
Boring, Type “B”, Type “C”, and Type “G” Conduit shall be paid when the pipe
passes the leakage test, and also the deflection test when PVC pipe is
installed.
The remaining portion of the
unit price bid shall be paid when video taping of the installed sewers and
final restoration has been completed. Final
restoration is defined as when seeding/mulching is in place in unpaved areas,
and when pavement/roadway work is complete in paved areas.
Whenever the proposed sewer
is located at approximately the same alignment as the existing sewer and it is
necessary to remove the existing sewer in order to construct the proposed
sewer, the cost for removing the existing sewer, including the cost for
disposing and transporting of materials or any additional excavation,
restoration, or labor required, shall be included in the price bid for the
various 603 items.
It shall be the
responsibility of the Contractor to uncover the existing sewer as the first
order of work in order to determine the elevation and alignment of the existing
conduit. The Engineer shall determine
if adjustments are required.
If PVC (S.D.R. 35) Pipe is used under these items, all operations
shall be in accordance with Items 603.016 and 707.41 of the City of Cincinnati
Supplement to the State of Ohio, Department of Transportation, Construction and
Material Specifications, latest edition.
PVC sewer pipe and fittings, ASTM D-3034 and ASTM F-679 (ASTM F-679 for 18” and greater
PVC only) latest edition, shall have
ASTM D-3212 joints (flexible elastomeric seals).
“Blue Brute – PVC C-900”, Polyvinyl Chloride Pressure Pipe, shall conform to
the requirements of AWWA C-900 Specifications.
Joints for PVC C-900 pipe and fittings shall conform to AWWA C-111
Specifications.
“Ultra-Rib” PVC Pipe, as manufactured by Extrusion Technologies, Inc.,
shall meet the performance requirements of ASTM F794 “Standard Specification
for Poly (Vinyl Chloride) (PVC) Profile Gravity Sewer Pipe and Fittings Based
on Controlled Inside Diameter”.
Flexible elastomeric seals meeting the requirements of ASTM D-3212 shall
be used with “Ultra-Rib” PVC Pipe.
“Vylon” PVC Pipe, as manufactured by Lamson
Co., shall meet the performance requirements of ASTM F1803 “Standard
Specification for Poly (Vinyl Chloride) (PVC) Closed Profile Gravity Pipe and
Fittings Based on Controlled Inside Diameter”.
Flexible elastomeric seals meeting the requirements of ASTM D-3212 shall
be used with “Vylon” PVC Pipe. When this pipe material is proposed to be
utilized for Conduit in Tunnel or Jack & Bore, the cost of the pipe shall
be included in the price bid for the contract item.
“A-2000” PVC Pipe, as manufactured by Contech Construction Products, Inc., shall meet
the performance requirements of ASTM F949 “Standard Specification for Poly
(Vinyl Chloride) (PVC) Corrugated Sewer Pipe with a Smooth Interior and
Fittings”. Flexible elastomeric seals
meeting the requirements of ASTM D-3212 shall be used with “A-2000” PVC Pipe.
“Carlon PVC Pipe”, PS 46, shall meet the performance requirements of
ASTM F789 “Standard Specification for Type PS-46 and Type PS-115 Poly (Vinyl
Chloride) (PVC) Plastic Gravity Flow Sewer Pipe and Fittings”. Flexible elastomeric seals meeting the
requirements of ASTM D-3212 shall be used with “Carlon PVC Pipe”.
Approved tapping saddles may
be used in lieu of prefabricated T-Branches for use with Prestressed Concrete
Cylinder Pipe and Ductile Iron Pipe.
The cost for each tapping saddle, including all work and equipment
incidental to its placement shall be included in the price bid for Item 603 -
6” T-Branch of the size specified.
The Contractor may utilize
an “Inserta Tee” connector, or equal, in lieu of prefabricated T-Branches for
all conduits 21” diameter and greater, other than on Ductile Iron Pipe or
Prestressed Concrete Cylinder Pipe. The
cost for each connector, including all work incidental to its placement, shall
be included in the price bid for Item 603 – 6” T-Branch of the size
specified. The cost for six inch bends including all work, materials and
equipment incidental to its placement shall be included in the price bid for
Item 603 - 6” T-Branch of the size specified.
The price bid for these items shall be complete,
including restoration.
A deflection test will be required on all main line P.V.C and C.C.F.P. sewers as specified in the City of Cincinnati Supplement to the State of Ohio, Department of Transportation, Construction and Material Specifications. Maximum limit for vertical deflection shall be 5% of the pipe inside diameter.
Contractor to furnish video taping of installed sewers meeting the requirements of Item 603.029 of the City Supplement to the State of Ohio (ODOT) Construction and Material specifications.
The
Contractor is required to submit complete electronic worksheets and
inspection reports to document the work that is performed and the condition of
the sewer and the manholes.
To
support the electronic submission of reports and worksheets, the Contractor
must have the following minimum computer equipment:
·
Pentium
II computer 300 MHZ, RAM 64 MB (preferably 128 MB), adequate hard drive space
(min. 160 MB/year of data).
·
Snappy
4.0 Video Capture Hardware (incl. Software) (approx. $30)
Available at: http://www.solutions4sure.com/
Search
on keyword “snappy”
1-800-644-9866
·
Compact
Flash Card Reader
·
2
Compact Flash Memory Cards 16 Meg.
·
RCA
Video Adapter
Custom
application software for completing the electronic submittals will be provided
by MSD. MSD will also provide approximately 6-8 hours of training for each
employee that will be inputting the data for the Contractor.
All mainline conduits shall be subjected to a leakage check either by an infiltration or exfiltration test with water or by an air test. Water infiltration or exfiltration tests will only be allowed for conduits larger than thirty-six (36) inches in diameter. The infiltration test allowance, for conduits larger than thirty-six (36) inches in diameter, shall be 0.079 gallons per inch of the internal pipe diameter per 100 feet of conduit per hour. The exfiltration test allowance shall be the same as for infiltration except that an additional allowance of ten (10) percent shall be permitted over the basic allowance for each two (2) feet of head over a basic two (2) foot minimum.
All conduits thirty-six (36)
inches and smaller shall be subjected to an air test. This test shall be performed in accordance with the latest ASTM
or UNI-BELL PVC Pipe Association requirements for each unique pipe material in
effect at the time that bids are submitted.
The Contractor shall perform the leakage test at the Contractor’s expense, including the furnishing of all labor, materials, and appurtenances necessary for the performance of the leakage test. The cost of the leakage test shall be included in the price bid for the appropriate 603 items.
Flow
will be permitted through the newly constructed sewer, prior to testing
requirements being met, on an as needed basis, as directed by the
Engineer.
The leakage test shall not be required if construction of the proposed sewer requires that an active lateral connection be made at time of installation of mainline sewer, due to removal of the existing mainline sewer or existing lateral. All other testing, including deflection testing and video taping shall be required, which may require flows to be stopped or pumped until deflection test and video taping is complete.
Bank run gravel backfill
above the "initial backfill" shall be required for Type "B"
conduit and in the following locations:
A. Where the trench parallels a road or street pavement and any
part of the trench is within two feet of the edge of the pavement, bank run
gravel backfill shall be used and shall extend to the pavement subgrade for the
entire width of the trench.
B.
Where
the trench crosses a road or street pavement, bank run gravel backfill shall be
used and shall extend two feet on each side of the pavement at pavement
subgrade (and shall extend beyond that point to the top of the initial backfill
over the pipe at the angle of repose for bank run gravel).
Compacted bank run gravel
backfill above the “initial backfill” shall be required for all conduits and
trenches under driveway pavements, when not within two feet of a road or street
pavement.
Controlled Density Fill shall meet or exceed the requirements as defined in the latest edition of the “Rules and Regulations of the Office of the County Engineer Governing Driveway Regulations and Pavement and/or Right-of-Way Opening Provisions for the Unincorporated Area of Hamilton County”, including addendums and attachments thereto.
JETTING
In lieu of compacting
the bank run gravel backfill in 4” lifts, the bank run gravel backfill may be
compacted by thoroughly jetting with water, provided satisfactory drainage and
removal of the free water is provided. The
Contractor shall provide a two (2) year guarantee against settling of the
trench area.
The Bank Run Gravel backfill shall be finally consolidated by thoroughly jetting with water. Trenches over 14 feet in depth shall be consolidated by jetting in two equal layers. For jetting, a hose not smaller than 1-1/2 inch diameter and a nozzle not smaller than 1 inch diameter and not shorter than 2/3 the depth of the trench carrying a water pressure of 40 pounds per square inch (psi) shall be inserted in a uniform pattern to obtain maximum consolidation. After the final jetting of the trench, the backfill shall be left to settle and to permit drainage of impounded water. Typical jetting procedures shall include a water removal system at intervals not to exceed 500 lineal feet of trench. After jetting is complete, the area around the jetting hole shall be filled and compacted by the use of the bucket on the equipment used for excavating. Settled trench surfaces shall then be brought to grade by filling with Bank Run Gravel backfill and compacted to a density equal to that of the adjacent ground.
Water shall be removed by installing an opening in
the manhole and connecting and installing a vertical six inch perforated pipe
with filter paper adjacent to the manhole, or by connecting and installing a
five to six foot length of perforated pipe with filter paper parallel to the
proposed main line conduit. If the
vertical pipe method is used, the vertical pipe shall be filled with #57 stone
after all water is removed. If the
horizontal pipe method is used, the horizontal pipe shall be plugged and sealed
inside the manhole. For both methods, the manhole opening shall be plugged and
sealed after jetting and water removal operations are completed.
The Contractor shall include the cost for the necessary backfill with the various 603 items. No additional payment shall be made for the use of Controlled Density Fill when required by the jurisdictional agency, or when required due to unsupported trenches, over excavating, or the inability to properly compact the granular backfill in the trench, as defined herein.
SPECIAL BACKFILLING REQUIREMENTS
Backfill material for Type
"C" and Type “G” Conduit shall consist of suitable soil or granular
material and shall be free from rubbish, muck, or other unsuitable materials.
Stones and shale exceeding
one-half (1/2) cubic feet in volume
shall not be used in the backfill, and stones and shale that are used shall be
separated by at least six (6) inches of earth.
The backfill for Type “C”
Conduit shall be finally consolidated by thoroughly jetting with water.
Trenches over 14 feet in depth shall be consolidated by jetting in two (2)
equal layers. For jetting other than
granular material, a hose not smaller than 1 –1/2 inches in diameter and nozzle
not smaller than 1 inch in diameter and not shorter than 2/3 the depth of the
trench carrying water at a minimum pressure of 40 pounds per square inch (psi)
shall be inserted into the back fill in a uniform pattern in order to obtain
maximum consolidation. After the final
jetting of the trench, the backfill shall be left to settle and to permit
drainage of the impounded water.
Typical jetting procedure shall include a water removal system, either
natural or mechanical, at intervals not to exceed 500 linear feet of
trench. Settled trench surfaces then
shall be brought to grade by filling with approved fill material and compacting
to a density equal to that of adjacent ground.
The Contractor shall include the cost for the necessary
backfill with the various 603 items. No
additional payment shall be made for the use of Controlled Density Backfill
when required by the jurisdictional agency or due to unsupported trenches, over
excavating, or the inability to properly compact the granular backfill in the
excavated trench.
This item shall be constructed in accordance with
Standard Drawing Acc. No. 49037, except as otherwise noted on the plans and in
the specifications.
If PVC pipe is installed, the pre-cast manhole base
shall be used in accordance with Standard Drawing Acc. No. 49056.
This item shall be
constructed in accordance with Standard Drawing Acc. No. 49003 and 49037 except
as otherwise noted on the plans and specifications.
This
item shall be constructed in accordance with Standard Drawing Acc. No. 49001,
except as otherwise noted on the plans and in the specifications.
All
Standard Type “P” Manholes shall have grating lids in accordance with Acc. No.
49007.
604 (REF. No. 22) STANDARD
SINGLE GUTTER INLETS
This
item shall be constructed in accordance with Standard Drawing Acc. No. 49011,
except as otherwise noted on the plans and in the specifications.
All
Standard Single Gutter Inlets shall have grating lids in accordance with Acc.
No. 49012.
The Contractor shall furnish
all castings for this project, including manhole frames and covers. All manhole frames and covers shall be in
accordance with Standard Drawing Acc. No. 49005.
The Contractor shall
securely fasten the frame to the concrete portion of the manhole by means of
four (4) ¾ inch stainless steel cinch anchors with five-inch long bolts.
If PVC pipe is installed,
the precast manhole base shall be used in accordance with Standard Drawing Acc.
Nos. 49056 and 49004.
All costs for dewatering, as
necessary, shall be included in the price bid for these items.
The cost for castings, cinch
anchors, bolts and anchor holes, and all work incidental to their placement
shall be included in the price bid for these items.
The Contractor shall include
the cost to connect the pipe or pipes to the proposed manholes, including the
cost of any pipe, materials, labor, excavation and restoration required, in the
price bid for these items.
Butyl mastic seals shall be
used at all manhole joints and at the concrete adjusting rings as shown on MSD
Standard Drawing Acc. Nos. 49003, 49037 and 49049.
Whenever it is necessary to
remove an existing manhole and/or pipe in order to construct a new manhole, the
cost for removing the existing manhole and/or pipe, including the cost for
disposing and transporting of materials or any additional excavation,
restoration, or labor required, shall be included in the price bid for these
items.
This
item shall be constructed in accordance with Standard Drawing Acc. No. 49004
and as directed by the Engineer.
The Contractor shall test all manholes for leakage by means of vacuum testing. The vacuum testing shall not be performed until after the manholes are set to final grade and the manhole castings are bolted down. All lift holes shall be plugged. Any other openings, such as pressure relief valves, shall be temporarily plugged to allow the vacuum tests. All pipes entering the manhole shall be plugged and care shall be taken to securely brace the plugs from being drawn into the manhole. The vacuum equipment test head shall be placed in the opening of the casting only and the seal inflated in accordance with the manufacturer’s recommendations.
Vacuum testing shall be in accordance with ASTM C1244. A vacuum of ten inches of mercury (10” Hg) shall be drawn and the vacuum pump shut off. With the valves closed, the time shall be measured for the vacuum to drop to nine inches of mercury (9” Hg). The manhole shall pass if the time meets or exceeds the allowable times as calculated from ASTM C1244, or as approved by the Engineer. All manhole repair and testing required because of the failure to meet the testing requirements shall be at the Contractor’s cost. The cost of the manhole vacuum leakage test shall be included in the price bid for the various 604 items.
The Contractor shall include
the cost of the Performance Bond in the Proposal. The cost entered in the Proposal should not exceed one
percent (1%)of the official bid price.
This item shall be included
for payment on the first partial estimate.
In the event the cost
entered in the Proposal exceeds one percent (1%), the cost over one percent
(1%) will be paid with the final payment.
Before final payment is made to the Contractor, the Contractor may be required to submit to the Engineer a release, in writing, from all the property owners whose property has been used by the Contractor outside the limits of construction and/or right-of-way.