Technical_Specifications.pdf

TECHNICAL

SPECIFICATIONS

2026 ON-CALL SIDEWALK

SPOT REPAIR PROGRAM

BID 25/26-048

Town of Manchester, CT

GRANULAR FILL

TECHNICAL SPECIFICATIONS

GRANULAR FILL

DESCRIPTION

“Granular Fill” includes the furnishing and installation of material to be used as a foundation for structures, to replace unstable material in slopes and shoulders, to replace rock and unsuitable material in trenches, and elsewhere as indicated on the Plans or Specifications or where directed by the Engineer. It shall consist of gravel conforming to the requirements of these specifications.

MATERIALS

Granular fill shall conform to the requirements of Section M.02.01 of Form 818.

CONSTRUCTION DETAILS

When granular fill is used for foundation for structures, as backfill or to replace rock or unsuitable material in trenches, it shall be deposited in layers not over six (6) inches in depth, with each layer thoroughly compacted before the addition of other layers.

MEASUREMENT

Only granular fill used to replace unsuitable material and rock in trenches or other areas directed by the Engineer will be measured for payment. It will be measured in place by the cubic yard after compaction within the payment lines shown or specified by the Engineer.

PAYMENT

This work will be paid for at the contract unit price per cubic yard for "Granular Fill", complete in place, which price shall constitute full compensation for all materials, tools, equipment and labor incidental thereto.

Pay Item Pay Unit

Granular Fill Cubic Yard

TS-1

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 817.

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 817.

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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.

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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. Immediately before placing the mixture, the road surface shall be cleaned by brooming or as otherwise directed by the Engineer.

Refueling of equipment in such a position that fuel might be spilled on bituminous concrete mixtures already placed or to be placed is prohibited.

Solvents and cleaners for use in cleaning mechanical equipment or hand tools shall be stored well clear of areas paved or to be paved.

Compaction: After spreading and when sufficient set has developed to permit proper compaction, each course shall be compacted by rolling, consisting of initial or breakdown rolling, intermediate rolling and final or finish rolling. Initial rolling shall be performed with a power driven steel wheel tandem or three wheel rollers weighing not less than ten (10) tons.

Intermediate rolling shall be done by a power driven steel wheel tandem roller. Final rolling shall be done with a self-propelled pneumatic tire roller equipped with Wide-tread compaction tires capable of exerting an average contact pressure from 60 to 90 pounds per square inch uniformly over the surface, adjusting ballast and tire inflation pressure as required. The

Contractor shall furnish evidence regarding tire size, pressure and loading to confirm that the proper contact pressure is being developed and that the loading and contact pressure are uniform for all wheels.

Rolling shall begin at the sides and progress toward the center, parallel to the centerline of the roadway. Alternate trips of the roller shall be terminated in stops at least three feet distant from any preceding stop.

Other rolling procedures may be directed by the Engineer, as conditions may require. Rolling shall be discontinued if the surface shows signs of excessive cracking or displacement and shall be continued later as directed. If it is found that the cracking and displacement continues, the paving operation shall be discontinued until the cause of the condition is corrected.

Rolling shall proceed continuously and in such a manner that all roller marks are eliminated.

The rollers shall be in good condition. They shall be operated by experienced roller operators and must be kept in continuous operation as nearly as practicable in such manner that all parts of the pavement shall receive substantially equal compression.

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In no case shall the Contractor use methods or equipment, which will result in fractured aggregate or lateral displacement of the material.

In all places inaccessible to a roller, such as adjacent to curbs, headers, gutters, and manholes, the required compression shall be secured with tamps. Depressions which may develop before the completion of the rolling shall be remedied by adding new material to bring such depressions to a true surface. Should any depressions remain after the final compaction has been obtained, new material shall be added to form a true and even surface. All high spots, high joints and other defects shall be adjusted as directed by the Engineer.

Placing of the pavement shall be as nearly continuous as possible and the roller shall pass over the unprotected end of the freshly laid mixture only when laying of the pavement is discontinued or interrupted for an appreciable period and joints shall be formed at such point. Where joints are to be formed, the edge of the existing pavement shall be cut square with the pavement.

Before new material is laid, a thin coating of hot asphalt shall be applied to the vertical face of the cut pavement.

Depressions which may develop after initial rolling shall be remedied by scarifying the surface mixture laid and adding new material to bring such depressions to a true surface.

For permanent pavement repairs, all joints between new and existing pavements shall be sealed with an approved liquid bituminous concrete sealer material.

Protection of the Work: Sections of the newly finished bituminous work shall be protected from traffic to prevent damage to the finished mat.

“Permanent Pavement Repair” will be measured by the actual number of square yards of bituminous concrete pavement repair completed and accepted in accordance with pay limits identified in the associated details on the Contract Plans. Excavation, asphalt emulsion tack coat, joint seal material, formation and compaction of subgrade, installation and compaction of processed aggregate base, sawcutting the existing pavement and bituminous concrete pavement shall not be measured for payment; these costs shall be considered as included in the unit price bid for “Permanent Pavement Repair”.

“Temporary Pavement Repair” of the type specified will be measured for payment by the actual number of square yards of bituminous concrete pavement repair installed and accepted in accordance with pay limits identified in the associated details on the Contract Plans. Asphalt emulsion tack coat, formation and compaction of subgrade, installation and compaction of processed aggregate base, and sawcutting the existing pavement shall not be measured for payment; these costs shall be considered as included in the unit price bid for “Temporary

Pavement Repair” of the type specified.

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BITUMINOUS CONCRETE PAVEMENT REPAIR

Due to existing pavement conditions in some areas, the Engineer may direct the Contractor to construct wider pavement repairs to provide suitable joints between new and existing pavement, which shall be measured and paid for in accordance with this Specification.

The work will be paid for at the contract unit price per square yard for “Permanent Pavement

Repair” complete and in place, to the pay limits and dimensions as shown on the plans and details, including all material, labor, tools and equipment incidental to the completion of the work and resetting of all storm basins, manholes and utility structures including any pavement around the structures. It shall include all excavation, asphalt emulsion tack coat, formation and compaction of subgrade, installation and compaction of processed aggregate base, sawcutting the existing pavement and bituminous concrete pavement.

The work will be paid for at the contract unit price per square yard for “Temporary Pavement

Repair” of the type specified complete and in place, to the pay limits and dimensions as shown on the plans and details, including all material, labor, tools and equipment incidental to the completion of the work and resetting of all storm basins, manholes and utility structures including any pavement around the structures. It shall include all asphalt emulsion tack coat, formation and compaction of subgrade, installation and compaction of processed aggregate base, and sawcutting the existing pavement.

Due to existing pavement conditions in some areas, the Engineer may direct the Contractor to construct wider pavement repairs to provide suitable joints between new and existing pavement, which shall be measured and paid for in accordance with this Specification.

Permanent Pavement Repair (Local Road) Square Yard

Permanent Pavement Repair (Collector Road) Square Yard

Permanent Pavement Repair (Arterial Road) Square Yard

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CONCRETE SIDEWALK AND CONCRETE SIDEWALK RAMPS

CONCRETE SIDEWALKS AND CONCRETE SIDEWALK RAMPS

DESCRIPTION

“Concrete Sidewalk” of the thickness specified includes the construction of concrete sidewalk on a prepared processed aggregate base course in conformance with the lines, grades, dimensions and details as shown on the Plans, or as directed by the Engineer. It shall also include the sawcutting, removal and disposal of existing sidewalk, steps, ramps or pavement within the excavation limits for “Concrete Sidewalk”.

“Concrete Sidewalk and Curb Monolithic” of the thickness specified includes the construction of concrete curb and sidewalk, monolithically poured, on a prepared processed aggregate base course in conformance with the lines, grades, dimensions and details as shown on the Plans, or as directed by the Engineer. It shall also include the sawcutting, removal and disposal of existing sidewalk, steps, ramps or pavement within the excavation limits for “Concrete Sidewalk and

Curb Monolithic”.

“Reinforced Concrete Sidewalk” of the thickness specified includes the construction of concrete sidewalk reinforced with welded wire fabric on a prepared processed aggregate base course in conformance with the lines, grades, dimensions and details as shown on the Plans, or as directed by the Engineer. It shall also include the sawcutting, removal and disposal of existing sidewalk, steps, ramps or pavement within the excavation limits for “Reinforced Concrete Sidewalk”.

“Concrete Sidewalk Ramp” of the thickness specified includes the construction of a concrete ramp on a prepared processed aggregate base course in conformance with the lines, grades, dimensions and details as shown on the Plans, or as directed by the Engineer. It shall also include the sawcutting, removal and disposal of existing sidewalk, steps, ramps or pavement within the excavation limits and installation of Town-furnished detectable warning tiles for

“Concrete Sidewalk Ramp”.

1. Concrete

a. The concrete furnished shall conform in respects to composition, transportation, mixing and placing to Class “F” Concrete as specified in Section M.03 of Form

817 or as modified herein.

b. Test concrete in accordance with AASHTO or ASTM Standard Test Methods as listed herein.

c. All concrete mixes shall include air entraining and water reducing admixtures and, as needed, a retarder or accelerator. All admixtures must be on the

Connecticut DOT approved list.

d. Entrained air contents shall be maintained as follows:

Nominal Max Average Air

Aggregate Size Content

3/8" 7.5%

1/2" 7.0%

3/4" 6.0%

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CONCRETE SIDEWALKS AND CONCRETE SIDEWALK RAMPS

A range of ±1.5% from the required average is permissible for field tests.

Slump at the point of placement shall be 4" ±1".

e. No additional materials will be added to the concrete mix at the job site without the prior approval of the Engineer.

2. Reinforcing

a. Welded Wire Mesh: WWM shall be used in all driveways and specified sidewalk locations. The WWM shall be W1.4xW1.4 and conform to the latest AASHTO

M 55M/M 55 “Standard Specifications for Welded Steel Wire Fabric for Concrete

Reinforcement.”

Written requests may be made to substitute synthetic fibers such as Fibermesh or approved equal for welded wire mesh with written approval of the Engineer. The addition rate shall be 1.5 lb/cu yard.

b. Smooth Metal Dowels: Smooth metal dowels shall be ⅝" in diameter and 18 inches in length. All metal dowels shall conform to the requirements of

AASHTO M31-92, Grade 60.

c. Deformed Bars: Deformed bars shall conform to AASHTO M31-92, Grade 60.

d. Bond breaker shall be Reed Wax #100 Emulsion as manufactured by Roger A.

Reed, Inc., Reading, MA (1-781-944-4640) or approved equal.

3. Construction/Isolation Joint Material

Joint material shall be one-half (2) inch in thickness, equal in width to the slab thickness and conform to AASHTO M33, Asphaltic Expansion Joint Materials.

4. Forms

The forms used shall be straight and firmly supported and staked to the line and grades as shown on the plans or as directed by the Engineer. The forms shall be free from warp and shall be of sufficient strength to resist springing out of shape. All forms shall be cleaned and oiled before use.

5. Curing Materials

A liquid membrane curing compound such as Masterkure by Master Builders or approved equal and meeting AASHTO M148 shall be applied in accordance with the manufacturer’s instructions over the completed concrete surface area.

6. Processed Aggregate Base

Processed aggregate base shall conform to the requirements of “Processed Aggregate

Base” elsewhere in these Specifications.

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CONCRETE SIDEWALKS AND CONCRETE SIDEWALK RAMPS

7. Granite Stone Transition Curb

Granite stone transition curb and associated concrete and mortar shall conform to the requirements of “Granite Stone Curb” elsewhere in these Specifications.

8. Detectable Warning Tiles

Prefabricated detectable warning tiles will be furnished by the Town.

1. Excavation

Excavation, including the removal and disposal of any type of existing sidewalk, curb, ramp, steps or pavement, shall be made to the required depths below the finished grade as shown on the plans or as directed. All soft and yielding material shall be removed and replaced with suitable material.

2. Processed Aggregate Base

The base course shall be placed in layers not to exceed six inches (6”) in depth and to such a depth that after compaction it shall be at the specified depth below the finished grade of the walk.

3. Forms

Forms shall be straight, free from warp and of sufficient strength to resist springing from the pressure of the concrete. Forms shall be of minimum 5” depth and shall have a flat surface on the top. Forms shall be securely staked, braced and held firmly to the required line and grade and shall be sufficiently tight to prevent leakage of mortar. All forms shall be cleaned and oiled or wetted before concrete is placed against them. Sheet metal templates one-eighth (⅛) inch in thickness, of the full depth and width of the walk, shall be spaced at intervals of fifteen feet (15’) or as directed by the Engineer. If the concrete is placed in alternate sections, these templates shall remain in place until concrete has been placed on both sides of the template. As soon as the concrete has obtained its initial set, the templates shall be removed.

4. Joints

a. Construction Joints: At maximum intervals of thirty feet (30’), install a construction joint as detailed on the drawings. Install dowels as shown on the drawings. Minimum embedment on each side of the joints shall be six inches

(6”). All dowels shall be straight, square on the ends with no burrs. Locate 12” from the edge of the slab. Bars must be carefully aligned and square with the form face. Prevent bonding to the concrete on one side of the joint by using a plastic sleeve over the dowel or coat with an approved bond breaker. Alternate protected end on each side of the joints.

Dowels are also to be installed between new and existing concrete slabs. Where new or repaired walks abut existing concrete sidewalks, the contractor shall drill

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CONCRETE SIDEWALKS AND CONCRETE SIDEWALK RAMPS

holes measuring 3/4 of an inch in diameter and twelve (12) inches in depth at 24" on centers into the existing concrete slab. The dowels, dipped in a liquid asphalt and coated with an approved bond breaker or plastic sleeve shall be set into the existing sidewalk slab prior to the placement of concrete. The dowels are to be level with the latitude pitch of the sidewalk and shall conform to the details of these specifications. Any variations in dowel installation procedures must be approved by the Engineer.

Other locations to which dowels may be required will be directed by the Engineer.

b. Control Joints: Follow joint spacing as shown on the drawings. At intervals of approximately fifteen (15) feet, a full control joint shall be provided. A tooled joint, to the depth of 3/8 of an inch, shall be installed at approximately five (5) foot intervals along the sidewalk. The resulting areas should be as square as practical. All joints shall be installed using straight guides set at right angles to the longitudinal direction of the walk.

c. Isolation Joints will be installed wherever concrete is placed against already installed concrete of structures such a curbing, building, or other, previously existing paving.

If it becomes necessary to adjust the locations, horizontal or vertical dimensions of the above listed items due to interference with utilities or for other valid reasons, the

Contractor, with the approval of the Engineer, shall construct said items to the modified dimensions and locations.

5. Concrete Placement and Finishing

a. Subgrade preparation: The subgrade shall be approved by the Engineer prior to placement of concrete. The grade will be free of soft areas, roots, rubble and large stones. It shall be fully compacted and graded to provide the specified slab thickness within ±¼".

b. Forms: Align forms as shown on drawings and secure to provide straight edges and uniform curves. Remove only after the concrete has gained sufficient strength to prevent chipping or raveling of the edges.

c. Where required, install welded wire mesh. Support the mesh on concrete bricks or other supports so that it will remain in the upper third of the slab.

d. Moisten the subgrade before starting concrete placement to eliminate water loss.

e. Place continuously, using construction joints at locations shown on the drawings or as approved by the Engineer. If an interruption occurs of a duration that may cause a cold joint, install a construction joint as described in this specification.

f. Water may be added to the truck mixer to adjust the slump when the discharge begins, only if the concrete is below the specified water cement ratio and maximum slump upon arrival at the job site. Water shall not be added to the batch at any later time. If higher slumps are required, use a high range water reducer such as Rheobuild 1000 by Master Builders or equal as approved by the

Engineer.

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CONCRETE SIDEWALKS AND CONCRETE SIDEWALK RAMPS

g. Screed the concrete to grade, bull float or darbie, consolidate formed edges by spading with a hand float, and leave until edging can begin. Allow to harden sufficiently so that a foot leaves only a slight imprint. Floating should not begin until the water sheen has disappeared. The surface shall be worked and floated with a wooden, aluminum or magnesium float or finishing machine using float blades. The outside edges of the slab shall be edged with one-quarter (¼) inch radius tool. The slab shall then be broomed crosswise with a fine hair broom leaving the surface free from all tool marks.

h. Immediately upon the disappearance of the water sheen following the final finishing and before any marked dehydration or checking occurs, the curing compound shall be applied using an approved spraying device. The sprayer shall deliver a fine spray with uniform coverage. Coverage rate shall be that recommended by the curing compound manufacturer.

i. The Contractor shall have on the job, at all times, sufficient polyethylene film or waterproof paper to provide complete coverage in the event of rain. Protect the surface if rain occurs before final set or use for curing in the event of a breakdown of the spray equipment.

j. If rain falls on the newly coated sidewalk before the curing film has dried sufficiently to resist damage, or if the film is damaged in any other manner, the contractor shall reapply same. Treated surfaces shall be protected from all foot or vehicular traffic for a sufficient period of time to prevent damage.

k. Within 24 hours, spray curing compound on newly poured sidewalks.

6. Reinforcing

Reinforcing of the type specified shall be used in all concrete sidewalk ramps and at concrete sidewalks which cross driveways. Welded wire fabric for concrete reinforcement shall be embedded at mid-depth in the slab.

7. Detectable Warning Tile

All sidewalk ramps shall have detectable warning tiles as shown on the Plan or as directed by the Engineer. The detectable warning tile shall be set directly in poured concrete according to the Plans, the manufacturer’s specifications or as directed by the

Engineer. The Contractor shall place two 25 pound concrete blocks or sandbags on each tile to prevent the tile from floating after installation in wet concrete. Detectable warning tiles shall be furnished by the Town.

8. Special Conditions

a. Low Temperature Placements: No concrete is to be placed when air temperature is below 50°F unless additional precautions are taken and prior approval is given by the Engineer. The Engineer must approve all placements below 50°F. No concrete will be placed on frozen sub-grade or at temperatures below 20°F.

Concrete exposed to temperatures below 40°F after placement must be protected through the use of insulating blankets, a six (6) inch layer of straw that is

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CONCRETE SIDEWALKS AND CONCRETE SIDEWALK RAMPS

maintained in a dry condition by a covering of plastic sheeting, or other appropriate methods. Any concrete placed during cold weather that is damaged because of freezing shall be replaced at the Contractor’s own expense.

b. Special consideration for high temperature placements and rapid drying conditions should be discussed with the Engineer. No additional materials will be added to the concrete mix at the job site without the prior approval of the

Engineer.

c. Where reconstruction of an existing approach walk is required, the reconstructed portion of the approach walk shall match the existing approach walk in color, texture and appearance.

9. Curb Transitions

Curb transitions shall be provided when sidewalk ramps are adjacent to existing and proposed curb. Granite stone curb transitions shall be provided adjacent to granite curb and concrete curb transitions shall be provided adjacent to concrete curb and bituminous concrete curb unless approved otherwise by the Engineer.

10. Backfilling and Removal of Surplus Material

The sides of all finished concrete work shall be backfilled to the limits shown on the drawings or as directed by the Engineer, with suitable material thoroughly compacted and finished flush with the top of the concrete. All surplus material shall be removed and the site left in a neat and presentable condition to the satisfaction of the Engineer.

11. Protection

The Contractor shall protect newly poured concrete surfaces so as to prevent damage from falling objects, vandalism, etc. The Contractor shall repair or remove and replace any damaged or defaced concrete surface at his own expense. Determination to repair or remove and replace will be at the sole discretion of the Engineer.

12. Utility Adjustments

If an existing utility box, valve box or manhole is located within the limits of the new sidewalk or ramp, the Contractor shall be responsible for the coordination and scheduling with the owner of the facility, for the adjustment of the facility to grade, if necessary.

13. Signs

Unless otherwise shown on the Plan or directed by the Engineer, the Contractor shall remove existing signs located within the limits of the sidewalk or ramp construction, erect them on temporary support posts during the construction of new sidewalk or ramp, and reinstall them at their original location in a PVC sleeve set flush to the grade of the new sidewalk.

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CONCRETE SIDEWALKS AND CONCRETE SIDEWALK RAMPS

MEASUREMENT

“Concrete Sidewalk” will be measured by the actual number of square feet of completed and accepted concrete sidewalk of the thickness specified.

“Concrete Sidewalk and Curb Monolithic” will be measured by the actual number of square feet of completed and accepted concrete sidewalk of the thickness specified measured from face of curb to back of walk.

“Reinforced Concrete Sidewalk” will be measured by the actual number of square feet of completed and accepted reinforced concrete sidewalk of the thickness specified.

“Concrete Sidewalk Ramps” will be measured by the actual number of square feet of completed and accepted concrete ramps of the thickness specified.

The following items will not be measured separately for payment, but shall be considered as included in the unit price bid for “Concrete Sidewalk”, “Reinforced Concrete Sidewalk”, “Concrete Sidewalk and Curb Monolithic” or “Concrete Sidewalk Ramp” of the thickness specified:

1. Excavation and backfill;

2. Furnishing and installing processed aggregate base;

3. Forming and compacting of subgrade;

4. Expansion joint material, dowels and other reinforcement;

5. Sawcutting and removal of existing sidewalks, ramps and/or bituminous concrete pavement within the limits of the new sidewalk or ramp;

6. Installing Town-furnished detectable warning tiles;

7. Installing curb transitions;

8. Adjustment of existing valve boxes, utility boxes, or handholes to grade;

9. Removing, temporarily erecting and re-installing existing signs within the limits of new sidewalk or ramps;

10. Cast-in-place concrete curbing associated with sidewalk ramps;

This work will be paid for at the contract unit price per square foot for “Concrete Sidewalk”, “Reinforced Concrete Sidewalk”, “Concrete Sidewalk and Curb Monolithic” or “Concrete

Sidewalk Ramp”, of the thickness specified, complete in place, which prices shall include all excavation; formation of subgrade; sawcutting, removal and disposal of existing sidewalk, ramps and pavement; processed aggregate base; concrete curb transitions; backfill, reinforcement, expansion joints, curing, disposal of surplus material, installation of detectable warning tiles, relocation and temporary support of existing signs, equipment, tools, materials and labor incidental thereto.

Granular fill used to replace unsuitable material or used as borrow material to bring the sidewalk subbase to grade will be paid under the item “Granular Fill” elsewhere in these Specifications.

Granular fill will only be paid for if directed by the Engineer.

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CONCRETE SIDEWALKS AND CONCRETE SIDEWALK RAMPS

4” Concrete Sidewalk Square Foot

5” Concrete Sidewalk Square Foot

5” Concrete Sidewalk and Curb Monolithic Square Foot

6” Reinforced Concrete Sidewalk Square Foot

6” Concrete Sidewalk Ramp Square Foot

8” Concrete Sidewalk Ramp Square Foot

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CONCRETE DRIVEWAY APRON

CONCRETE DRIVEWAY APRON

DESCRIPTION

“(Size) Concrete Driveway Apron” includes the construction of concrete driveways and concrete driveway aprons on a prepared processed aggregate base in the locations and to the dimensions and details shown on the Plans, as directed by the Engineer, and in accordance with these

Specifications.

Portland cement, fine and coarse aggregate, air-entraining admixtures and water shall conform to the requirements of Section M.03.01 of Form 817 for Class “F” Concrete.

Processed aggregate base shall conform to the requirements of “Processed Aggregate Base”

Reinforcement shall conform to the requirements of Section M.06.01 of Form 817 for concrete pavement.

Granite stone transition curb and associated concrete and mortar shall conform to the requirements of “Granite Stone Curb” elsewhere in these Specifications.

Construction methods shall conform to the requirement of the Item, “Concrete Sidewalk and

Concrete Sidewalk Ramps”. The surface shall be finished and marked off as directed. The driveways shall be reinforced as indicated on the Plans. The concrete shall contain not less than five (5) nor more the seven (7) percent entrained air at the time the concrete is deposited in the forms.

The Contractor shall sawcut the existing pavement and excavate as necessary to perform the work under this item as shown on the Plans.

Curb transitions shall be provided when concrete driveway aprons are adjacent to existing and proposed curb. Granite stone curb transitions shall be provided adjacent to granite curb and concrete curb transitions shall be provided adjacent to concrete curb and bituminous concrete curb unless approved otherwise by the Engineer.

“(Size) Concrete Driveway Apron” will be measured for payment by the actual number of square feet of completed and accepted concrete driveway and concrete driveway apron.

included in the unit price bid for “Concrete Driveway Apron”:

1. Excavation

2. Sawcutting of existing concrete or bituminous surface

3. Processed Aggregate Base

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CONCRETE DRIVEWAY APRON

CONCRETE DRIVEWAY APRON

4. Curb transitions

5. Dowels and other reinforcement

6. Removal of existing sidewalks, ramps, driveway or roadway within the driveway excavation limits

This work will be paid for at the contract unit price per square foot for “(Size) Concrete

Driveway Apron” of the type specified, complete in place, which price shall include excavation, sawcutting, removal and disposal of existing driveway and/or sidewalk, concrete, reinforcement, granite stone or concrete curb transitions, formation of subgrade and all materials, equipment, tools and labor incidental thereto.

6” Concrete Driveway Apron Square Foot

8” Concrete Driveway Apron Square Foot

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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.

3. Mortar

TS-17

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.

6. Joints

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GRANITE STONE CURB

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

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GRANITE STONE CURB

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

Granite Stone Curb Linear Foot

Radius Granite Stone Curb Linear Foot

Reset Granite Stone Curb Linear Foot

Trim and Cut Granite Stone Curb Linear Foot

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CAST-IN-PLACE CONCRETE CURB

CAST-IN-PLACE CONCRETE CURB

DESCRIPTION

“Cast-in-Place Concrete Curb” includes the construction of a cast-in-place concrete curb on a prepared processed aggregate base in accordance with the lines, grades, dimensions and details shown on the Plans or as directed by the Engineer.

All materials shall conform to the requirements of “Concrete Sidewalks and Sidewalk Ramps”

Construction methods shall conform to the requirements of “Concrete Sidewalks and Sidewalk

Ramps” elsewhere in these Specifications.

“Cast-in-Place Concrete Curb” will be measured for payment by the actual number of linear feet of concrete curb installed and accepted.

Payment for this work will be made at the contract unit price per linear foot for “Cast-in-Place

Concrete Curb”, complete in place, which price shall include all excavation, sawcutting, removal and disposal of existing curb and/or bituminous concrete, concrete, processed aggregate base, formation of subgrade, joint filler, dowels, backfilling, compaction, disposal of all surplus material, and all materials, equipment and labor necessary to complete the work as specified on the Plans or as directed by the Engineer.

Cast-in-Place Concrete Curb Linear Foot

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BITUMINOUS CONCRETE CURB

BITUMINOUS CONCRETE CURB

DESCRIPTION

“Bituminous Concrete Curb” of the type specified includes the furnishing and installation of machine laid bituminous concrete, constructed on a prepared bituminous concrete pavement to the dimensions and details shown on the Plans, or as directed by the Engineer, and in conformity with the Specifications.

All materials for this work, including tack coat, shall meet the requirements of Section M.04, curb mix, of Form 817.

The methods employed in performing the work and all equipment, tools machinery and plant used in handling material and executing any part of the work shall be subject to the approval of the Engineer before the work is started, and whenever found unsatisfactory, it shall be changed and improved as required by the Engineer. All equipment, tools, machinery and plant used must be maintained in a satisfactory working condition. The curbing shall be constructed in accordance with the following requirements:

Prior to the arrival of the mixture on the work, the surface of the pavement where the curbing is to be constructed shall be cleaned of all loose and foreign material. The surface, which shall be perfectly dry and clean at the time the mix is placed, shall be coated with an approved bitumen tack coat just prior to placing the mixture.

On arrival at the site, the mixture shall be transferred from the truck to the hopper of the curbing machine; and the mixture shall be kept clean and free from dirt or foreign materials at all times.

The surface of the curbing shall be tested with a 10-foot straight-edge, and any variation from a true line exceeding one-quarter of an inch (¼”) shall be satisfactorily corrected. The only compaction required shall be that obtained by the approved mechanical curbing machine.

Where machine work is impractical, the Engineer may permit hand laid curbing to be constructed.

If the design of the curbing machine is such that the outside wheels operate outside of the curb, the Contractor will be required to obtain a smooth surface by grading and consolidating the area on which the outside wheel of the machine rides, and this work shall be done at his expense.

After the completion of curbing, traffic shall be kept at a safe distance for a period of not less than 24 hours and until the curbing has set sufficiently to prevent damage to the work. Fill material will be placed behind the curb immediately thereafter.

“Bituminous Concrete Curb” of the type specified will be measured for payment by the actual number of linear feet of bituminous concrete lip curb, measured along the top of the curb, TS-22 completed and accepted.

The following will not be measured separately for payment, but shall be considered as included in the unit price bid for “Bituminous Concrete Curb” of the type specified:

1. Removal and disposal of existing curb

2. Surface cleaning and preparation of existing bituminous concrete surface

3. Tack Coat

This work will be paid for at the contract unit price per linear foot for "Bituminous Concrete

Curb" of the type specified, complete in place, which price shall include the removal and disposal of existing curb, the cleaning and preparation of existing bituminous concrete roadway, and all materials, equipment, tools and labor incidental thereto.

Bituminous Concrete Lip Curb Linear Foot

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BITUMINOUS CONCRETE DRIVEWAY

BITUMINOUS CONCRETE DRIVEWAY

DESCRIPTION

“Bituminous Concrete Driveway” includes the construction of a bituminous concrete surfaced driveway or driveway apron, constructed on a processed aggregate base course in the locations and to the dimensions and details shown on the Plans, as directed by the Engineer and in accordance with these Specifications.

Processed Aggregate Base shall conform to the requirements of “Processed Aggregate Base”

Bituminous concrete shall meet the requirements of Section M.04, HMA S0.