Technical_Specifications.pdf

TECHNICAL

SPECIFICATIONS

PARK IMPROVEMENTS

CHARTER OAK WEST

BID 23/24-096

Town of Manchester, CT

MOBILIZATION AND PROJECT CLOSEOUT

TECHNICAL SPECIFICATIONS

MOBILIZATION AND PROJECT CLOSEOUT

DESCRIPTION

“Mobilization and Project Closeout” consist of all work necessary for moving project personnel and equipment to the project site; all work necessary for the establishment of the Contractors’ field offices, buildings and other facilities, if required, which are necessary for Contract performance; the preparation of work plans and other documents identified elsewhere in the

Contract that must be submitted by the Contractor prior to the start of physical construction;

demobilization of plant and equipment; completion of all physical work; and completion of administrative closeout items as required by the Contractor.

MEASUREMENT

“Mobilization and Project Closeout” will be measured for payment in accordance with Section

9.75.04 of the Form 818.

PAYMENT

The work under this item will be paid for at the Contract lump sum price for “Mobilization and

Project Closeout” which price shall include materials, equipment, tools, transportation, labor and all work incidental thereto. Payment for this item shall be made only once per project site as depicted on the Plans.

Pay Item Pay Unit

Mobilization and Project Closeout Lump Sum

CLEARING AND GRUBBING

CLEARING AND GRUBBING

DESCRIPTION

“Clearing and Grubbing” includes the furnishing of all labor, equipment and materials and performing all operations in connection with the clearing and grubbing of trees, stumps, brush, rubbish and all objectionable material within the limits of work and where shown on the Plans.

The work also includes the proper disposal of all materials resulting from the clearing and grubbing operation away from the project area.

MATERIALS

Not Applicable

CONSTRUCTION DETAILS

Clearing shall include the felling, cutting up and stacking of all trees to four-foot lengths and the satisfactory removal and disposal of trees, bushes, downed timber, brush and debris and obstructions of any nature. Individual trees shown on the Plans or directed by the Engineer to be left standing shall be protected in a satisfactory manner to prevent damage incidental to construction operations.

The Contractor shall mark all trees, shrubs and plants to be removed in accordance with the

Plans and Specifications at least seven (7) days prior to removal. The Engineer shall field review the markings and make any adjustments prior to the clearing operation.

For all trees to be removed from within the Town of Manchester right-of-way, the Contractor shall obtain a “Tree Removal” permit from the Town Tree Warden and comply with all of the requirements of such permit, which includes posting notices on these trees for a minimum of ten

(10) days.

Grubbing shall include the satisfactory removal and disposal of all stumps, roots larger than one inch in diameter, matted roots, debris, surface boulders 6" or larger and other obstructions to a depth not less than 18 inches below finish ground grades, except that in areas to be occupied by structures they shall be removed in their entirety. Stumps shown to be removed on the plans shall be removed by grinding, or other method approved in writing by the Engineer. All depressions resulting from grubbing shall be refilled with selected materials from earth excavation and/or approved off-site sources graded and compacted so as to conform to adjacent ground surfaces at no additional cost to the Town.

The limits of clearing and grubbing shall typically match the limits of disturbance for proposed work unless such work can be completed without disturbing the trees as determined by the

Engineer.

The Contractor shall protect all existing trees, shrubs and landscaping, fences, mailboxes, utility poles, signs, sidewalks, driveways and pavements that are to remain. The Contractor shall repair, reset or replace these items as designated by the Engineer at no additional cost. Track type vehicles shall not be allowed on existing pavement areas. Any disturbance of lawn areas

CLEARING AND GRUBBING

CLEARING AND GRUBBING

outside of the clearing limits shall be restored to pre-construction condition and shall not be measured for payment.

“Clearing and Grubbing” will be measured for payment by the lump sum. The lump sum price shall include all the work as described above which may be necessary to properly complete the project. Should the project area be increased in length or the scope of work increased due to construction changes beyond the requirements hereinabove, any additional clearing and grubbing work required will be paid for as extra work. Should the project be decreased in length, a suitable credit, mutually agreed upon and based on the reduction in actual work or scope, will be taken by the Town. The disposal of trees, stumps, etc., will not be measured separately for payment, but its cost shall be considered included in the lump sum price bid for “Clearing and

Grubbing”.

Payment for this work will be at the contract lump sum price for “Clearing and Grubbing”, which price constitutes full compensation for all labor, equipment, tools, supplies, materials, handling, hauling, removal, disposal and work incidental and necessary to complete the clearing and grubbing operation, all in accordance with the provisions of the Plans and Specifications and as directed by the Engineer.

Mailboxes impacted by the proposed construction shall be reset by the Contractor as directed by the Engineer and payment for all associated work shall be included in this item.

Clearing and Grubbing Lump Sum

CONSTRUCTION STAKING

CONSTRUCTION STAKING

DESCRIPTION

“Construction Staking” shall consist of retaining a Land Surveyor licensed in the State of

Connecticut who will be responsible for all locations, layout and reference staking necessary for proper control and satisfactory completion of the Work and acceptance of the Contract as specified herein.

The Contractor/Contractor’s Surveyor shall be solely responsible for the accuracy of the line and grade of all features of the Work. Any errors or apparent discrepancies found in previous surveys, Plans, Specifications, or Special Provisions shall be called to the Engineer’s attention by the Contractor for correction or interpretation prior to proceeding with the Work.

All construction staking shall be performed by qualified engineering or surveying personnel, under the direction of a Land Surveyor licensed in the State of Connecticut who is trained, experienced and skilled in construction layout.

The Contractor’s surveyor shall provide and maintain for the periods needed, as determined by the Engineer, reference stakes at various intervals outside the slope limits. Further, the

Contractor shall provide and maintain reference stakes at 50-foot station intervals along the baseline/offset baseline, immediately prior to and during the formation of sub-grade and the construction of all subsequent pavement layers.

Any and all monumentation within the construction area shall be clearly identified in the field with stakes, paint or other measures and preserved by the Contractor. The Contractor’s Land

Surveyor shall reset or replace disturbed survey markers, streetline monuments and private property markers when directed by the Engineer at no additional cost.

“Set Private Property Marker” shall consist of retaining a Land Surveyor licensed in the State of

Connecticut who will be responsible for the setting of markers in place of those impacted by the

Work at the locations indicated on the Plan.

Granite stone monuments shall be 6" x 6" x 3'-9" (±3") surveyors bound sawn or dressed top with a 1/2" Dia. x 1" Deep hole.

Iron pins shall be three foot (36”), #5 reinforcing rod in conformance with Article M.06.01 in

Form 817 with a plastic cap set flush with grade. The plastic cap shall bear the name and license number of the responsible Land Surveyor.

Any concrete monuments disturbed during construction shall be replaced with granite stone monuments and any disturbed pipes and pins shall be replaced with iron pins as specified herein and directed by the Engineer at no additional cost.

The setting of PK/MAG type spikes may be permitted by the Engineer, if in the opinion of the

Engineer, iron pins/monuments cannot be reset.

The setting of private property markers, as indicated on the Plan, shall be set with Brass Disks

(1” flat face) supplied by the Town unless otherwise directed by the Engineer.

Granular Fill shall conform to the requirements of “Granular Fill” elsewhere in these

Specifications.

CONSTRUCTION DETAILS - GENERAL

Prior to any construction activity, the Contractor shall retain a Land Surveyor licensed in the

State of Connecticut who will be responsible for furnishing all horizontal and vertical reference staking necessary for the Contractor to complete the Work and the Engineer to inspect the Work and for preparation of an electronic as-built drawing as defined herein.

The Engineer will supply the Contractor/Contractor’s Surveyor an electronic drawing file of the

“General Location Survey” along with the “Proposed Plan”, in AutoCAD .dwg format, containing, control, monumentation, baselines and other data to assist with construction staking.

The Contractor shall coordinate with utility companies to provide reference stakes to indicate the proposed edge of road/way in the vicinity of all new or relocated utility poles and underground utility lines. All stakes shall be properly referenced as to station, offset and shall be referenced to the proposed grade.

The Contractor shall retain a Land Surveyor licensed in the State of Connecticut who will be responsible for locating the existing “Private Property Markers” impacted by the Work and “Set

Private Property Markers” at the appropriate time and locations as previously determined by said

Surveyor per the Plans.

LOCATION OF EXISTING STREET LINE & PROPERTY CORNER MONUMENTATION

Unless approved otherwise by the Engineer, the Contractor’s surveyor shall complete the following field work prior to commencement of clearing and grubbing operations and other construction activities:

• Verify the existing control traverse as shown on the “General Location Survey”, which shall be utilized for all locations.

• Locate all existing street line monumentation and property corner markers within the construction area.

All locations shall be made to A-2 standards as defined in the “Minimum Standards for Surveys and Maps in the State of Connecticut”, as adopted by The Connecticut Association of Land

Surveyors Inc. on September 26, 1996, as amended.

Upon completing location of the existing control traverse and monumentation, the following information shall be delivered to the Engineer within TEN (10) CALENDAR DAYS:

1. All original survey notes, electronic field book files, computation sheets.

CONSTRUCTION STAKING

2. An electronic drawing file provided in a compatible AutoCAD or .dxf format showing all monumentation and control points, at a scale consistent with the “General Location

Survey” or as designated by the Town of Manchester. This file shall be submitted for approval prior to the contractor beginning the Clearing and Grubbing operation.

Clearing and grubbing and other construction activities in critical areas may be suspended until this information is reviewed and accepted by the Engineer.

MEASUREMENT AND PAYMENT

“Construction Staking” will be measured for payment by the lump sum. The lump sum unit price bid for “Construction Staking” shall include all materials, tools, equipment, labor and work incidental thereto for the work described in this Specification.

Partial payments for this item shall be as follows:

1. Payment equal to 25% of the lump sum bid price upon successful delivery of the electronic existing control traverse and monumentation location survey.

2. Payment equal to 75% of the lump sum bid price upon completion of construction activities.

The work “Set Private Property Marker” shall be paid for at the contract unit price bid. This price shall be for all the work required by this section and all materials, equipment, tools and labor incidental thereto.

Construction Staking Lump Sum

GRANITE STONE CURB

GRANITE STONE CURB

DESCRIPTION

“Granite Stone Curb” and “Radius Granite Stone Curb” includes the furnishing and installing of straight or curved granite stone curb on a prepared base at the location and to the details shown on the Plans or as directed by the Engineer and in accordance with these Specifications.

“Reset Granite Stone Curb” includes the removal of existing granite stone curb and the resetting of the curb at a new location on a prepared base in accordance with the details shown on the

Plans or as directed by the Engineer and in accordance with these Specifications. This work includes reset of both straight and radius granite stone curb.

“Trim and Cut Granite Stone Curb” includes the sawcutting of existing granite stone curb as required to match new curb, sidewalk or apron to existing or where directed by the Engineer. It shall not include the sawcutting of new granite stone curb sections.

“Remove Granite Stone Curb” includes the removal of existing granite stone curb where shown on the Plans or as directed by the Engineer and in accordance with these Specifications. This work includes removal of both straight and radius granite stone curb and return of such curb to the Town when requested.

All curbing material shall be created from hard and durable granite, light gray in color, free from seams which impair its structural integrity, and of a smooth splitting character. Natural color variations characteristic of the deposit will be permitted. Granite shall come from approved quarries acceptable to the Engineer.

1. Curved Granite Curb

Type V 6 x 18 curbstones set on a radius of one hundred (100) feet or less shall be cut to the curve required.

All radius granite stone curb shall be set in a subbase of Class "C" concrete.

2. Straight Granite Stone Curb

Straight Granite Stone Curb shall be cut to the following dimensions:

Type

Width At

Top, Inches

Depth, Inches

Minimum

Length, Feet

Minimum

Width At

Bot. Inches

V 5 x 18 5 18"-22" 4 5

Straight granite curb shall be set in a subbase of Class “C” concrete at the joints only.

GRANITE STONE CURB

3. Mortar

Mortar for pointing joints shall conform to Section M.11.04 of Form 817.

4. Concrete

Class ‘C’ Concrete shall conform to Section M.03.01 of Form 817.

5. Processed Aggregate Base

Processed Aggregate Base shall conform to the material requirements of the item

“Processed Aggregate Base” elsewhere in these Specifications.

1. Delivery

All granite curb shall be accepted by the Town at the time of delivery and prior to installation.

2. Excavation

Excavation shall be made of sufficient depth and width to accommodate the processed aggregate base as shown on the Plans. The processed aggregate base shall be compacted to a firm, even surface and shall be approved by the Engineer.

3. Transition Sections

Roadway Transitions: A six foot (6’) transition section of granite curb shall be installed at all end sections that do not match to other types of curbing. The end section shall match flush with the existing edge of the pavement or the top of adjacent existing curb.

Driveway Transitions: All transition sections of granite curbing along driveways shall be set in Class "C" concrete and meet the requirements of the Plans.

4. Backfilling

After all curb is set, the space between it and the wall of the trench shall be backfilled with processed aggregate base material thoroughly tamped to the depth directed, care being taken not to affect the line or grade of the curb. All curbing shall be properly installed and backfilled prior to the placement of the bituminous concrete pavement.

All radius granite stone curbing shall be set in Class "C" concrete as shown on the Plans.

5. Protection

The contractor shall protect all curbing until completion and acceptance.

GRANITE STONE CURB

6. Joints

The maximum joint openings between sections of curbing shall not exceed ½ inch over the entire width of the exposed curb.

Joints are to be mortared to the full depth and width of the curb, and all excess mortar wiped clean off face of curb. At intervals of fifty feet (50’), one joint shall be left open for expansion purposes.

Joints in straight granite curb sections shall be set in a subbase of Class “C” concrete as shown on the Plan or as directed by the Engineer.

7. Removal

The removal of granite curb shall be made in conformity with the requirements of the plans and as ordered by the Engineer. All concrete, dowels, forms and joint material shall be removed. The base material, if any, may remain in place if the required depth for the materials to be placed in that area is provided. All existing curb which is designated to remain, shall be sawcut at the contract limits or the nearest joint as directed by the

Engineer. Sawcut edges shall be protected during construction. Any edges damaged shall be recut and any material required to be placed in that area shall not be measured for payment.

Unless directed otherwise by the Engineer, granite stone curb removed for this project shall be disposed of in accordance with all applicable regulations. No stockpiling of removed material shall be allowed on site.

“Granite Stone Curb” and “Radius Granite Stone Curb” will be measured for payment by the actual number of linear feet of granite stone curbing or curved granite stone curbing, installed and accepted. Measurement shall be made along the top axis line of face of curb. Curbing set on a radius of 100 feet or less will be measured for payment as “Radius Granite Stone Curb”.

Transition curbing will be measured for payment as “Granite Stone Curb” or as “Radius Granite

Stone Curb” as the case may be.

“Reset Granite Stone Curb” will be measured for payment by the actual number of linear feet of existing granite stone curbing, installed and accepted. Measurement shall be made along the top axis line of face of curb.

“Trim and Cut Granite Stone Curb” will be measured for payment by the actual number of linear feet of granite stone curb sawcut. Measurement shall be made along the face of curb. The sawcutting of new granite stone curb required to fit to the locations shown on the Plans will not be measured for payment, but its costs shall be included in the item “Granite Stone Curb” or

“Radius Granite Stone Curb”.

“Remove Concrete Curb” will be measured for payment by the actual number of linear feet of granite stone curb removed and properly disposed of, as shown on the plans or as directed by the

Engineer. The pay limits shall be measured in place with the Engineer prior to removal. Any material removed prior to measurement shall not be considered for payment. The sawcutting of existing curb to be removed will not be measured separately for payment, , but its costs shall be included in the item “Remove Granite Stone Curb”.

The following will not be measured for payment, but shall be considered as included in the unit price bid for “Granite Stone Curb”, “Curved Granite Stone Curb”, “Reset Granite Stone Curb”, “Trim and Cut Granite Stone Curb” and “Remove Granite Stone Curb”:

1. Excavation

2. Removal and disposal of existing curb

3. Removal and disposal of existing roadway within excavation limits of new curb

4. Removal and disposal of existing concrete around curb (for reset curb)

5. Concrete for granite curb subbase

6. Processed Aggregate Base

7. Mortar or Joint Sealant

Payment for this work will be made at the contract unit price per linear foot for “Granite Stone

Curb”, “Radius Granite Stone Curb”, “Trim and Cut Granite Stone Curb” or “Remove Granite

Stone Curb”, complete in place. The prices shall include all sawcutting, removal and disposal of existing curb and/or bituminous concrete; all excavation as shown on the Plans, granite stone curbing, granite stone transition curbing, processed aggregate base, pointing, Class “C” concrete, backfilling, compaction, disposal of all surplus material, equipment, tools and labor incidental thereto. Unless specified otherwise, sawcutting of existing curb to be removed will not be paid for separately, but shall be included in the cost of this or other items.

Payment for resetting existing granite stone curbing will be made at the contract unit price per linear foot of “Reset Granite Stone Curb”, complete in place. The price shall include all sawcutting, removal and disposal of existing bituminous concrete; all excavation as shown on the

Plans, processed aggregate base, pointing, Class “C” concrete, backfilling, removal of concrete around existing curb, compaction, disposal of all surplus material, equipment, tools and labor incidental thereto.

Granite Stone Curb Linear Foot

Remove Granite Stone Curb Linear Foot

BEAM RAIL

DESCRIPTION

“Metal Beam Rail” of the type specified includes the furnishing and installation of metal beam railing, consisting of a single or double line of rail elements fastened to steel posts with or without rub rail as shown on the Plans. It shall be erected in the locations sited and fabricated in conformity with the designations, dimensions, and details shown on the Plans or as directed by the Engineer.

“End Anchorage” of the type specified includes the furnishing and installation of metal beam railing anchorage systems as shown on the Plans. It shall be erected in the locations sited and fabricated in conformity with the designations, dimensions, and details shown on the Plans or as directed by the Engineer.

“Remove Metal Beam Rail” includes the removal and disposal of existing metal beam rail and end anchorages in their entirety where shown on the Plans or where directed by the Engineer.

The materials for metal beam rail and anchorages shall conform to the requirements of Article

M.10.02 of Form 818.

Metal beam rail delineators shall conform to the requirements of Article M.18.09 and M.18.13.

Metal beam rail shall be installed in accordance with Section 9.10.03 of Form 818.

“Metal Beam Rail” of the type specified will be measured for payment by the actual number of linear feet of accepted rail of the type or designation installed, measured along the top of rail between centers of end posts in each continuous section as shown on the plans.

“End Anchorage” of the type specified will be measured by the actual number of anchorages of each type installed and accepted in accordance with the pay limits shown on the Plans.

“Remove Metal Beam Rail” will be measured for payment by the actual number of linear feet of existing rail removed, measured along the top of rail between centers of end posts in each continuous section or to end anchorages. The Contractor and the Engineer shall measure the pay limits of “Remove Metal Beam Rail” prior to the actual removal of the rail.

The following items will not be measured separately for payment, but shall be considered as included in the unit price bid for “Metal Beam Rail,” “End Anchorage,” or “Remove Metal

Beam Rail” of the type specified:

1. Excavation

2. Backfilling of existing and new post and concrete anchorage holes

3. Delineators

“Metal Beam Rail” of the type specified will be paid for at the contract unit price per linear feet as indicated on the Plans or directed by the Engineer, complete in place. The price shall include all backfilling, materials, fittings, rub rail, block outs, posts, metal beam rail delineators, removal and disposal of existing metal beam rail where shown on the Plans or where directed by the

Engineer, equipment, tools, removal and disposal of surplus material, and labor incidental to the installation of the rail.

“End Anchorage” of the type specified will be paid for at the contract unit price each for each type of anchorage, complete in place, which price shall include excavation, backfilling, materials, fittings, equipment, tools, removal of surplus material and labor incidental to the complete installation.

“Remove Metal Beam Rail” will be paid for at the contract unit price per linear feet as indicated on the Plans or directed by the Engineer, complete in place. The price shall include all backfilling, materials, removal and disposal of existing metal beam rail and concrete anchorages, equipment, tools, removal and disposal of surplus material, and labor incidental to the removal of the rail.

Remove Metal Beam Rail Linear Foot

REMOVE CONCRETE SIDEWALK

DESCRIPTION

“Remove Concrete Sidewalk” includes the removal and disposal of all existing concrete sidewalks and concrete curb where shown on the Plan or where directed by the Engineer.

Not applicable.

The removal of concrete sidewalks and concrete curb shall be made in conformity with the requirements of the plans and as ordered by the Engineer. All concrete, reinforcing, dowels, forms and joint material shall be removed. The base material, if any, may remain in place if the required depth for the materials to be placed in that area is provided. All existing sidewalks and driveways, which are designated to remain, shall be sawcut at the contract limits or the nearest joint as directed by the Engineer. Sawcut edges shall be protected during construction. Any edges damaged shall be recut and any material required to be placed in that area shall not be

The Contractor shall protect all existing trees, shrubs and landscaping, fences, mailboxes, utility poles, signs, sidewalks, driveways and pavements that are to remain. The Contractor shall repair, reset or replace these items as designated by the Engineer at no additional cost. Track type vehicles shall not be allowed on existing pavement areas. Any disturbance of lawn areas outside of the construction limits shall be restored to pre-construction condition and shall not be

All materials removed for this project shall be disposed of in accordance with all applicable regulations. No stockpiling of removed material shall be allowed on site.

Access to all private properties shall be maintained at all times, including providing temporary processed aggregate driveways as directed by the Engineer. Temporary driveways shall be provided at no additional cost to the Town of Manchester.

Payment for “Remove Concrete Sidewalk” shall be for the actual number of square feet of concrete sidewalk and concrete curb removed and properly disposed of, as shown on the plans or as directed by the Engineer.

The pay limits of “Remove Concrete Sidewalk” shall be measured in place with the Engineer prior to removal. Any material removed prior to measurement shall not be considered for payment.

The sawcutting of existing sidewalks and driveways shall not be measured for payment.

PAYMENT

“Remove Concrete Sidewalk” will be paid for within the pay limits specified at the contract unit price per square foot and shall include the furnishing of all tools, equipment, materials and labor necessary to complete the work as specified on the Plans or directed by the Engineer as measured under the methods described above.

Sawcutting of existing sidewalks and driveways will not be paid for separately, but shall be included in the cost of this or other items.

Remove Concrete Sidewalk Square Foot

EXCAVATION

EXCAVATION

DESCRIPTION

“Earth Excavation” shall consist of the removal and satisfactory disposal of all material taken from the area between existing ground and the finished grade of new sidewalk or slope, and between existing ground surface and the subgrade elevation within the limits of full-depth parking lot construction and synthetic turf field construction. Excavation below the finished grade of new sidewalk or slope necessary to install new sidewalk or slope is included in the unit price bid for “Concrete Sidewalk” or “Restoration of Lawn Areas” of the type specified.

“Rock Excavation” shall consist of the removal and satisfactory disposal of rock in definite ledge formation and boulders, or the portion of boulders, one cubic yard or more in volume, within the excavation limits as described in “Earth Excavation” above.

Trench excavation for new culverts, sanitary sewers and laterals, water mains and services, underdrains or conduit is included in the unit price bid for “Culvert”, “Sanitary Sewer”, “Sanitary Sewer Lateral”, “Water Main, “Water Service”, “Underdrain” or “Conduit” of the size and type specified.

Excavation for light standards and traffic control foundations is included in the unit price bid for

“Light Standard Foundation” or “Traffic Control Foundation” of the type specified.

“Rock in Foundation Excavation” shall consist of the removal and satisfactory disposal of rock in definite ledge formation and boulders, or the portion of boulders, one cubic yard or more in volume, within the foundation excavation limits for light standards and traffic control foundations.

“Test Pit Excavation” shall consist of the careful excavation to determine the horizontal and vertical location and size and material of an existing underground utility where shown on the plans or as directed by the Engineer.

Excavation shall be made in conformance to the limits and grades shown on the plans.

Excavation beyond the limits shown on the plans will not be measured for payment. Topsoil, sod and other organic matter shall be removed and disposed of.

When bedrock is encountered, it shall be excavated to the slope lines and depths indicated on the plans. All loose and unstable material shall be removed and disposed of. Any blasting shall conform to applicable local, State and Federal laws and regulations. The Contractor shall be responsible for all damage due either directly or indirectly to such operation.

All excavated material obtained within the project limits shall be used in the formation of embankments. Embankments shall be constructed of earth only. No bituminous concrete or reclaimed waste shall be used in the embankment. The material shall be free from refuse, stumps, roots, rocks, brush, weeds or other unsuitable material.

EXCAVATION

The depth of each layer, before compaction, shall not exceed twelve inches (12”). The embankment shall be crowned or pitched to provide drainage at the close of each day’s operation.

The entire embankment area shall be leveled off by suitable grading equipment and shall be compacted to at least the required minimum density by use of compaction equipment consisting of rollers, compactors or a combination thereof. The dry density after compaction shall not be less than 95 percent of the dry density for that soil when tested in accordance with AASHTO

T180, Method D. Each layer shall be compacted at optimum moisture.

All surplus excavated material shall become the property of the Contractor and disposed of off of the project site unless otherwise directed by the Engineer.

Earth slopes shall be tracked by traversing the slopes with cleated tracks so that the cleat indentations are horizontal. Tracking shall be completed prior to placing topsoil. After all grading for the roadbed has been substantially completed and all drains installed, the subgrade shall be brought to the lines, grades and cross-sections shown on the plans. No particle over 3” shall in its greatest dimension be placed within 12” below the top of the prepared subbase.

All soft and yielding material within the subgrade shall be removed and replaced with suitable material. Compaction shall be as specified in Section 2.02 of Form 817. The Contractor shall protect the completed subgrade from damage. The subgrade shall be checked and approved by the Engineer prior to placing pavement structure thereon.

For test pit excavation, the Contractor shall follow all the requirements of “Call Before You

Dig”, including requesting utility markouts and hand-digging in the vicinity of the underground utility. The Contractor shall notify the Engineer 48 hours in advance of digging the test pit so the Engineer and the appropriate utility representative may be present.

Prior to excavation, the Contractor and Engineer shall agree on the exact location of the test pit based upon available mapping and the utility markout. The Contractor shall adjust the limits of excavation as needed to successfully locate the utility.

Horizontal and vertical locations and size and material of utilities must be obtained during test pit excavation and provided to the Engineer for review. Horizontal utility locations shall be field-surveyed or field-measured with a minimum of two (2) swing-ties from fixed physical features identified on the plans. Vertical utility elevations shall be field-surveyed using a level or other related equipment to provide elevation to the nearest hundredth of a foot (0.01’). The

Contractor is made aware that additional test pits may be required and the proposed design may be modified based on results of test pit information obtained.

“Earth Excavation” is considered a “Final Pay” item (i.e. the quantity will not be measured for payment but the quantity used for payment purposes will be that shown in the Bid Proposal.)

No changes to the quantity shown in the Bid Proposal will be made unless significant changes to

EXCAVATION

the proposed grading are directed by the Engineer. In the case of significant grading changes directed by the Engineer, the quantity shown in the Bid Proposal shall be used as the baseline quantity and agreed measured changes shall be added or subtracted from the baseline quantity.

“Rock Excavation” and “Rock in Trench Excavation” shall be measured for payment by the cubic yard. Payment lines for “Rock Excavation” and “Rock in Trench Excavation” shall coincide with the slope and grade lines as shown on the plans in areas where rock is encountered.

The payment lines will be based on a predetermined limit as mutually agreed to by the Engineer and Contractor. Prior to any rock excavation, the Engineer and Contractor shall survey the conditions and agree on the payment limits for each item. In no case will the payment limits extend beyond the lines and grades shown on the plans and cross sections.

“Rock in Foundation Excavation” shall be measured for payment by the vertical foot. The payment lines will be based on a predetermined limit as mutually agreed to by the Engineer and

Contractor. Prior to any rock excavation, the Engineer and Contractor shall survey the conditions and agree on the payment limits for each item.

“Test Pit Excavation” shall be measured for payment by the cubic yard.

Trench excavation for culverts, sanitary sewers, sanitary sewer laterals, water mains, water services, underdrains and conduits will not be measured for payment; its costs shall be considered as included in the cost for the appropriate item herein.

Excavation for sidewalk, driveway and slope will not be measured for payment; its costs shall be considered as included in the cost for the appropriate item herein.

Payment for “Earth Excavation”, “Rock Excavation” and “Rock in Trench Excavation” will be made at the contract unit price bid per cubic yard for each item subject to the method of measurement above. The prices shall constitute full compensation for all equipment, tools, and labor incidental to the completion of the excavation, the formation and compaction of embankments, the formation and compaction of subgrades, and the disposal of surplus or unsuitable material in accordance with these Specifications.

Payment for “Rock in Foundation Excavation” will be made at the contract unit price bid per vertical foot subject to the method of measurement above. The price shall constitute full compensation for all equipment, tools, and labor incidental to the completion of the excavation, the disposal of surplus material in accordance with these Specifications and the furnishing of any additional concrete required to fill the excavation beyond the designated foundation hole dimensions.

Payment for “Test Pit Excavation” will be made at the contract unit price bid per cubic yard for each item subject to the method of measurement above. The prices shall constitute full compensation for all equipment, tools, and labor incidental to the completion of the excavation

EXCAVATION

and location of utilities as indicated herein, and the backfill and compaction of the excavation to restore the ground surface to the original condition in accordance with these Specifications.

Earth Excavation Cubic Yard

Rock Excavation Cubic Yard

Rock in Trench Excavation Cubic Yard

Test Pit Excavation Cubic Yard

FORMATION OF SUBGRADE

FORMATION OF SUBGRADE

DESCRIPTION

“Formation of Subgrade” shall consist of the grading and compaction of the subgrade to the lines, grades and dimensions shown on the Plans or as directed by the Engineer.

Not applicable

Construction methods and compaction requirements shall conform to Section 2.09 of Form 817.

If unsuitable material is encountered during this work, it shall be excavated and replaced with granular fill and/or processed aggregate base to the depth and limits directed by the Engineer.

This additional work shall be measured and paid for as “Earth Excavation”, “Granular Fill” or

“Processed Aggregate Base” in accordance with these specifications.

“Formation of Subgrade” is considered a “Final Pay” item (i.e. the quantity will not be measured for payment but the quantity used for payment purposes will be that shown in the Bid

Proposal.) No changes to the quantity shown in the Bid Proposal will be made unless significant changes to the proposed limits are directed by the Engineer. In the case of significant changes to the proposed limits as directed by the Engineer, the quantity shown in the Bid Proposal shall be used as the baseline quantity and agreed measured changes shall be added or subtracted from the baseline quantity.

Formation and compaction of subgrade material for driveways and sidewalks will not be measured for payment, but its costs shall be considered as included in the unit prices for

“Driveway”, “Driveway Apron” or “Sidewalk” of the type specified.

Payment for “Formation of Subgrade” will be made at the contract unit price bid per square yard, which price shall constitute full compensation for all equipment, tools, and labor incidental to the completion of the formation and compaction of subgrades as specified herein.

Formation of Subgrade Square Yard

PROCESSED AGGREGATE BASE

PROCESSED AGGREGATE BASE

DESCRIPTION

“Processed Aggregate Base” shall consist of furnishing and installing processed aggregate base as a foundation for bituminous concrete, concrete sidewalks, curbs, driveways and other items where shown on the Plans in accordance with these Specifications and in conformity with the lines, grades, compacted thickness and typical cross-section as shown on the Plans.

At the discretion of the Engineer, contractors shall supply copies of material test results, certified by an approved testing laboratory.

The materials for this work shall conform to the requirements of Section M.05.01, Processed

Aggregate Base and Pavement of Form 817.

Coarse aggregate shall be broken stone. Only one type of coarse aggregate shall be used on a project unless otherwise permitted by the Engineer.

Prior to placing the bottom coarse of the processed aggregate base, the prepared subbase shall be maintained true to line and grade. After the aggregate is spread, it shall be thoroughly compacted and bound by use of equipment approved by the Engineer. Water may be used during the compaction and binding operation.

When the bottom course has been completed, as specified above, the top course aggregate shall be spread over it to such thickness that, after final compaction and binding, the total thickness of the two courses will equal that thickness specified for the completed base. The top course shall be spread, compacted and bound exactly as specified above for the bottom course.

The final surface of the subbase course shall be fine graded so that, after final compaction and just prior to placement of base or pavement courses, the surface elevation shall not vary more than one-quarter inch above or below the design grade at any location. The surface shall be completed to the above tolerance and approved by the Engineer prior to any work at a given location to place an overlying course. If after approval, the course becomes displaced or disturbed in any way for any reason, the Contractor shall repair and regrade the damage to the satisfaction of the Engineer prior to placing the overlying course. All repaired sections shall be recompacted until they meet the requirements as stated herein.

“Processed Aggregate Base” will be measured by the actual number of cubic yards of processed aggregate base installed and accepted.

Processed aggregate base used under sidewalks, curbs or any other items where processed aggregate base is specified to be included in the pay item, will not be measured separately

PROCESSED AGGREGATE BASE

PROCESSED AGGREGATE BASE

for payment, but its costs shall be included in the prices bid for the items which include this material.

When measured for payment, this work will be paid for at the contract unit price per cubic yard for "Processed Aggregate Base" complete in place, which price shall include all materials, equipment, tools and labor incidental thereto.

Processed Aggregate Base Cubic Yard

BITUMINOUS CONCRETE (HOT MIX ASPHALT)

BITUMINOUS CONCRETE (HOT MIX ASPHALT)

DESCRIPTION

“Bituminous Concrete (Hot Mix Asphalt)”, hereafter referred to as HMA, of the type specified includes the furnishing and installation of a bituminous concrete constructed on a prepared processed aggregate base or existing pavement course in accordance with the lines, grades and depths shown on the Plans or as directed by the Engineer. It also includes furnishing quality control testing as required in the Specification.

All references to the “State” or “State Inspector” shall mean the Town of Manchester or the

Town of Manchester’s designated inspector.

HMA shall conform to the requirements of Section M.04 “Bituminous Concrete” of Form 818, latest edition.

Unless otherwise directed by the Engineer, Superpave Design Level 2 shall be used.

HMA shall be installed in accordance with Section 4.06 “Bituminous Concrete” of Form 818, latest edition.

Core correlation density samples as described in Section 4.06.03.10 are required.

If less than 5,000 tons, the furnishing of a “Material Transfer Vehicle” as described in Section

4.06.03.3 will not be required.

“HMA” of the type specified within the limits of roadway construction shall be measured for payment by the actual number of tons, complete and accepted in place.

Adjustments may be applied to bituminous concrete quantities and will be measured for payment using the formulas in Section 4.06.04.2.

Material used for tack coat will not be measured separately for payment, but its cost shall be included in the unit price for “HMA” of the type specified.

Bituminous concrete for driveways and driveway aprons will not be measured for payment under this item; it shall be measured as specified in the item “Bituminous Concrete Driveway”.

This work will be paid for at the contract unit price bid per ton for “HMA” of the type specified, which price shall constitute full compensation for all equipment, tools, labor and materials incidental thereto. No separate payment will be made for tack coat or material transfer vehicle.

HMA S0.375 Ton

HMA S1.0 Ton

BITUMINOUS CONCRETE PAVEMENT REPAIR

BITUMINOUS CONCRETE PAVEMENT REPAIR

DESCRIPTION

“Permanent Pavement Repair” shall consist of the constructing a full depth pavement repair in an existing roadway of the classification specified where shown on the Plan or where directed by the Engineer. The surface course pavement structure shall consist of bituminous concrete constructed on a prepared stabilized base and in accordance with lines, grades as shown on the

Plans, or as directed by the Engineer. It shall also include all excavation, furnishing, installing and compacting of processed aggregate base, sawcutting the existing pavement as required, and the resetting of storm drainage and utility structures and any pavement surrounding these structures.

“Temporary Pavement Repair” shall consist of the constructing a pavement repair in an existing roadway of the classification specified for temporarily repairing all pavement cuts and other pavement areas specified by the Engineer. The surface course pavement structure shall consist of bituminous concrete constructed on a prepared stabilized base and in accordance with lines, grades as shown on the Plans, or as directed by the Engineer. It shall also include all excavation, furnishing, installing and compacting of processed aggregate base, sawcutting the existing pavement, and the resetting of storm drainage and utility structures and any pavement surrounding these structures.

Bituminous Concrete shall conform to the requirements of Section M.04 of Form 818.

All materials will be supplied from a plant certified and approved by the State of Connecticut, Department of Transportation.

Processed aggregate base shall conform to the specification for “Processed Aggregate Base” elsewhere in these Specifications.

If it is found that any Bituminous Mixture, even though meeting the requirements of the Job Mix

Formula, fails to perform satisfactorily, the producer shall on notice (1) immediately cease furnishing the material, (2) take immediate corrective steps to provide a mix which does perform satisfactorily.

When bituminous concrete is laid, only material conforming to the requirements of these specifications and approved by the Engineer shall be used in the work. If tests of samples removed from the work reveal that the mixture is inconsistent or that other than approved materials have been incorporated in the mixture, or that the mixture is not in accordance with the specifications and the product proves unsatisfactory, the Town reserves the right to demand the replacement of the unsatisfactory bituminous concrete. All expenses of the Town incidental to such replacement, including all costs incurred in putting the road in satisfactory condition, shall be paid by the Contractor.

The tack coat to be used on all cold joints shall conform to the requirements of Section M.04 of

Form 818.

Transportation of Mixtures: The mixture shall be transported from the paving plant in trucks having tight bodies, which have previously been cleaned of all foreign material. The use of kerosene, gasoline, fuel or similar products for the coating of the inside of truck bodies is strictly prohibited. Such coatings may consist of soapy water or commercial oil emulsions (also known as soluble oils) in the proportion of one (1) part oil to six (6) parts water. When such coatings are applied, truck bodies shall be raised immediately prior to loading to remove any excess coating material. Loaded trucks shall be covered with waterproof canvas or other suitable covers.

The mixture shall be delivered at a temperature within -4 degrees Celsius (25 degrees

Fahrenheit) of the approved job mix formula.

Paving Equipment: The paving machine to be used shall be a self-powered type with an adapter to provide guidance of the screeding action. The screed or strike-off member shall be adjustable to the shape of the cross section of the existing pavement. Some method shall be provided for the tilting of the screed while in operation to secure the proper "pulling" and to result in a uniformly screeded surface. The machine shall have sufficient number of driving wheels so that there will be no undue amount of slippage. Means shall be provided for heating the screeding members by some method that will prevent accumulations of bituminous materials.

Placement of Mixture: The areas to be repaired shall be sawcut and the existing pavement and base material removed to the depth shown on the Plan. The excavated area shall then be filled with processed aggregate base to the depth identified on the Plans and shall be installed and compacted in maximum 6” lifts.

The mixture shall be laid only when the surface is free of frost, dried to the satisfaction of the

Engineer, and when the weather is not foggy or rainy. Operations shall be carried only when the atmospheric temperature in the shade is not less than 4 degrees Celsius (40 degrees Fahrenheit) unless approval is given by the Engineer. Upon arrival, the mixture shall be immediately spread and struck-off to the width required and to such appropriate loose depth so that the compacted pavement will conform to the specified depth.

In order to obtain tight and well-compacted longitudinal joints, the sequence of the bituminous concrete placing operations shall be subject to the control of the Engineer.

Before any compaction is started, the surface shall be checked and inequities adjusted; all

“drippings,” i.e. fat, sandy accumulations, and all fat spots from any source, shall be removed and replaced by satisfactory material.

In areas where, on account of physical limitations, it is impractical to operate the paving equipment, the Engineer will permit the use of other type spreader or the mixture may be spread and screeded by hand.

The Contractor shall cut to the limits of the area to be repaired a minimum of 150 mm (six (6) inches) beyond each side of the disturbed area or into the existing pavement with a cutting saw.

The saw cut shall be vertical and in straight lines. After the pavement has been removed to a depth of 450 mm (eighteen (18) inches) below the existing pavement surface, the roadway base shall be installed, graded and compacted in accordance with the specification for “Processed

Aggregate Base”. The roadway base shall be placed in layers not to exceed 150 mm (six (6) inches) in depth and to such a depth that after compaction it shall be at the specified depth shown on the plans. Contact surfaces of curbing, manholes, etc. shall be painted with a thin uniform coat of hot asphalt cement or tack coat just before the material is placed against them. Such asphalt cement or tack coat shall not be paid for. Hot-laid bituminous concrete shall be placed evenly and uniformly to a minimum compacted thickness of six (6) inches. The maximum thickness to be placed per course shall be two (2) inches.