MassDOT Section 8: Prosecution and Progress

SECTION 8.00 : PROSECUTION AND PROGRESS Subsection 8.01 : Subletting or Assignment of Contract The Contractor shall not sublet, sell, transfer, assign, or otherwise dispose of the Contract or any portion thereof, or of their right, title, or interest therein, without written consent of the Engineer. In case such consent is given, the Contractor will be permitted to sublet a portion thereof, but shall perform with their own organization, work amounting to not less than 50 percent of the original total Contract price, except that any items designated in the Contract as “specialty items” may be performe d by Subcontract and the cost of any such specialty items so performed by Subcontracts may be deducted from the total cost computing the amount of work required to be performed by the Contractor with their own organization. No Subcontractors, or transfer of Contract, shall in any case release the Contractor of their liability under the Contract and Bonds. The Contractor shall notify the Engineer, as soon as practicable after execution of the Contract, the name and address of each Subcontractor they intend to employ, the portion of the work which the Subcontractor is to do, and such other information the Engineer may require in order to ascertain whether the Subcontractor is reliable and able to perform the work. The Contractor shall not withhold retainage on any subcontract . The Contractor shall direct the attention of their Subcontractors to the requirements of:

1.Subsection 7.05: Insurance Requirements regarding insurances, and also the Minimum Wage Rates and Health and Welfare and Pensions Fund Contributions as determined by the Commission of Labor and Industries of the Commonwealth and also to the provisions of Subsection 7.21: Preference in Employment of Labor and Subsection 7.22: Labor, Lodging, Board, Maximum Hours of Employment , Weekly Payment, Keeping of Payroll Records , and

2.Chapter 30, General Laws, Section 39L states: “The Commonwealth and every county, city, town, district, board, commission or other public body which, as the awarding authority, requests proposals, bids or sub -bids for any work in the construction, reconstr uction, alteration, remodeling, repair or demolition of any public building or other public works (1) shall not enter into a Contract for the work with, and shall not approve as a Subcontractor furnishing labor and materials for a part of the work, a foreign corporation which has not filed with the awarding authority a certificate of the state secretary stating that such corporation has complied with requirements of section 15.03 of subdivision A of Part 15 of chapter 156D and the date of compliance, and fu rther has filed all annual reports required by section 16.22 of subdivision B of Part 16 of said chapter 156D.” The Contractor shall also direct the attention of their Subcontractors and of all suppliers of material to the requirements of Subsection 5.09: Inspection of Work regarding the facilities for the Engineer’s inspectors. Subsection 8.02: Schedule of Operations The Contractor shall submit, to and for the comments of the Engineer, a schedule of operations within ten days after the mailing of the executed Contract to the Contractor. The schedule shall show the proposed methods of construction and sequence of work a nd the time the Contractor proposes to complete the various items of work within the time specified in the Contract. Massachusetts Department of Transportation – Highway Division Standard Specifications for Highways and Bridges II.322 202 4 Edition SECTION 700 : INCIDENTAL WORK SUBSECTION 701: CEMENT CONCRETE SIDEWALKS, PEDESTRIAN CURB RAMPS AND DRIVEWAYS DESCRIPTION

701.20 : General

This work shall consist of the construction of cement concrete sidewalks, pedestrian curb ramps, and driveways in accordance with the specifications and within the tolerances established on the plans. MATERIALS 701. 30: General Materials shall meet the requirements specified in the following Subsections of Division III, Materials: Gravel Borrow , Type b ............................................................................................................... M1.03.0 Cement Concrete (4 ,000 psi, ¾-inch, 610) ....................................................................... M4.02.00 Preformed Expansion Joint Filler .......................................................................................... M9.14.0 CONSTRUCTION METHODS 701.40: Preparation of Underlying Surface

A.Excavation. Excavation of the area shall be in accordance with the applicable portions of Subsection 120: Excavation .

B.Subgrade and Subbase. The subgrade for the sidewalks and driveways shall be shaped parallel to the proposed surface of the sidewalks and driveways and thoroughly compacted. All depressions in the subgrade shall be filled with suitable material and again compacted until the surface is smooth and hard. Prior to the placement of the subbase, the Contractor shall inspect the prepared subgrade to ensure that it is in conformance with the required grade and cross -section. Subgrade shall be fine graded to meet the applicable requiremen ts of Subsection 170: Grading. After the subgrade has been prepared, a gravel subbase shall be placed upon it. After being compacted thoroughly, the subbase shall be at least 8 inches thick and parallel to the proposed surface of the sidewalk. Prior to the placement of the cement concrete, the Contractor shall inspect the prepared subbase material to ensure that it is in conformance with the required grade and cross -section. Subbase material that is not in accordance with the plans or specifications shall be reworked or replaced to meet the applicable requirements o f Subsection 170: Grading before the start of cement concrete placement. When placing cement concrete, the compacted subbase shall not be frozen or have standing water. Massachusetts Department of Transportation – Highway Division Standard Specifications for Highways and Bridges II.323 202 4 Edition 701.41: Cement Concrete Sidewalks, Pedestrian Curb Ramps, and Driveways

A.Forms. Side forms and transverse forms shall be smooth, free from warp, of sufficient strength to resist springing out of shape, of a depth to conform to the thickness of the proposed sidewalk or pedestrian curb ramp and of a type satisfactory to the Engineer. All mortar or dirt shall be completely removed from forms that have been previously used. The forms shall be well staked and thoroughly graded and set to the established lines with their upper edge conforming to the grade of the finished sidewalk or pedestrian curb ramp which shall have sufficient pitch to the roadside edge to provide for surface drainage. All pedestrian curb ramp joints and transition sections which define grade changes shall be formed staked and checked for dimension, grade and slope conformance prior to placing cement concrete. All forms shall be oiled before placing concrete.

B.Placing and Finishing Cement Concrete. The concrete shall be placed in alternate slabs 30 ft long except as otherwise ordered. The slabs shall be separated by transverse preformed expansion joint filler ½ in. thick. Preformed expansion joint filler shall be placed adjacent to or around existing structures as directed. Detectable warning panels conforming to the plans shall be securely incorporated into the work by means acceptable to the Engineer. On the foundation as specified above, the concrete shall be placed in such quantity that after being thoroughly consolidated in place it shall be 4 in. deep. At driveways, the sidewalks shall be 6 in. deep. No finishing operation shall be performed while free water is present. Finishing operations shall be delayed until all bleed water and water sheen has left the surface and the concrete has started to stiffen. After water sheen has disappeared, edging operations, where required, shall be completed. After edging and joining operations, the surface shall be floated. Immediately following floating, the surface shall be steel -troweled. If necessary tooled joints and edges shall be rerun before and after troweling to maintain uniformity. After troweling, the su rface shall be brushed by drawing a soft- bristled push broom with a long handle over the surface of the concrete to produce a nonslip surface. In conveying the concrete from the place of mixing to the place of deposit, the operation shall be conducted in such a manner that no mortar will be lost, and the concrete shall be so handled that the concrete will be of uniform composition throughout, sho wing neither excess nor lack of mortar in any one place. The surface of all concrete sidewalks shall be uniformly scored into block units of areas not more than 36 ft² . The depth of the scoring shall be at least ½ in. deep and no more than ½ in. wide. The application of neat cement to surfaces in order to hasten hardening is prohibited. The finishing of concrete surface shall be done by experienced and competent cement finishers. Massachusetts Department of Transportation – Highway Division Standard Specifications for Highways and Bridges II.324 202 4 Edition When completed the sidewalks shall be kept moist and protected from traffic and weather for at least 3 days in accordance with the applicable provisions of 476.71: Curing and 476.74: Protection of Pavement . CONTRACTOR QUALITY CONTROL

701.60 : General

The Contractor shall provide QC adequate to ensure that all materials and workmanship conform with the specification requirements. The Contractor shall perform QC activities as outlined further below. 701.61: Contractor Quality Control Plan The Contractor shall provide and maintain a Quality Control Plan (QC Plan). The QC Plan shall sufficiently document the QC processes of all Contractor parties (i.e. , Contractor, Subcontractors, Producers) performing work required under this specification. 701.62: Sidewalk, Pedestrian Curb Ramp, and Driveway Materials and Workmanship The Contractor shall verify that they are using the correct materials as specified under 701.30: General. All material shall exhibit satisfactory workmanship including; subgrade and subbase preparation and concrete placement and finishing as specified under 701.41: Cement Concrete Sidewalks, Pedestrian Curb Ramps, and Driveways . DEPARTMENT ACCEPTANCE 701.70: General The Department shall verify that the Contractor is correctly performing the work and QC activities. 701.71: Sidewalk, Pedestrian Curb Ramp, and Driveway Materials and Workmanship The Engineer will perform Acceptance inspection and testing to verify that the workmanship and materials conform with 701.61: Contractor Quality Control Plan . COMPENSATION 701.80: Method of Measurement Cement Concrete Sidewalks, Pedestrian Curb Ramps, and Driveways will be measured in square yards. Excavation will be measured by the cubic yard as specified in 120.80: Method of Measurement . Gravel Borrow will be measured by the cubic yard as specified in 150.80: Method of Measurement . Fine grading and compacting will be measured by the square yard as specified in 170.80 Method of Measurement . Massachusetts Department of Transportation – Highway Division Standard Specifications for Highways and Bridges II.325 202 4 Edition 701.81: Basis of Payment Cement Concrete Sidewalk, Cement Concrete Pedestrian Curb Ramp, and Cement Concrete Driveway will be paid for at the contract unit price per square yard complete in place and shall include detectable warning panels. Gravel will be paid for at the contract unit price per cubic yard under Item 151. Gravel Borrow. Fine grading and compacting will be paid for at the contract unit price per square yard under Item 170., Fine Grading and Compacting – Subgrade Areas. Excavation will be paid for at the contract unit price per cubic yard under the excavation items. 701.82: Payment Items 701. Cement Concrete Sidewalk ...................................................................................... Square Yard 701.1 Cement Concrete Sidewalk at Driveways .......................................................... Square Yard 701.2 Cement Concrete Pedestrian Curb Ramp ........................................................... Square Yard SUB

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