Attachment B Spec.pdf

STANDARD

SPECIFICATIONS

FOR

HIGHWAY

CONSTRUCTION

The South Carolina Department of Transportation 2007 Standard Specifications for Highway Construction is hereby approved for application on highway and related construction contracts as referenced in the Contract and the Plans, and applies as noted and amended by those documents.

Approved, D. R. Shealy, P.E.

Director of Construction

I hereby certify that The South Carolina Department of Transportation 2007 Standard Specifications for Highway Construction was prepared under my direct supervision and that I am a duly registered professional engineer under the laws of the State of South Carolina.

G. A. Peck, P.E.

Construction Specifications Engineer

COPIES OF THIS BOOK MAY BE OBTAINED FROM:

South Carolina Department of Transportation

Engineering Publications Office 955 Park Street

Columbia, South Carolina 29201 Telephone 803-737-4533

Fax 803-737-4530 E-mail: engrpubsales@dot.state.sc.us.

http://www.scdot.org/doing/const_man.shtml

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720.1 720.4.1

SECTION 720

CONCRETE CURB, GUTTER, CURB AND GUTTER,

SIDEWALK, DRIVEWAY, AND MEDIAN

720.1

720.1 Description

720.1 This section contains specifications for the materials, construction, equip-ment, measurement, and payment for the construction of Portland cement concrete curb, Portland cement concrete gutter, Portland cement concrete curb and gutter, Portland cement concrete sidewalk, Portland cement con-crete driveway, and Portland cement concrete median in one course on a prepared subgrade in accordance with these specifications, conforming to the dimensions, typical cross-section, and notes shown on the Plans, and to the lines and grades shown on the Plans or established by the RCE.

720.1 This work includes the placing of reinforcing steel in the concrete when in-dicated on the Plans.

720.2

720.2 Materials

720.2.1

720.2.1 Portland Cement Concrete

720.2.1 Provide Class 2500 Portland cement concrete conforming to the applicable requirements of Section 701.

720.2.2

720.2.2 Expansion Joint Material

720.2.2 Provide expansion joint materials meeting the requirements of Subsection 702.2.2.1.

720.2.3

720.2.3 Reinforcing Steel

720.2.3 Provide reinforcing steel conforming to the requirements of ASTM A 706, Grade 60, and meeting the applicable requirements of Section 703.

720.3

720.3 Equipment

720.3 Ensure that the equipment necessary for the proper construction of the work is on site, in acceptable working condition, and approved by the RCE as to both type and condition before the start of work under this section. Provide sufficient equipment to enable prosecution of the work in accordance with the project schedule and completion of the work in the specified time.

720.4

720.4 Construction

720.4.1

720.4.1 Subgrade

720.4.1 Thoroughly compact the subgrade and finish to a smooth, firmly compacted surface, which is moist at the time the concrete is placed. In areas where it is impractical to use standard type rollers, accomplish compaction by vibratory hand compactors. Remove and replace concrete that settles and/or cracks after placement as directed by the RCE without additional compensation.

720.4.2 720.4.5

720.4.2

720.4.2 Forms

720.4.2 Use wood or metal forms of a depth equal to the thickness of the concrete course. Make certain they are free from warp and are of sufficient strength when staked, to hold the alignment during the concrete placing and finishing operations. Before concrete is placed against them, clean and oil the forms.

Use flexible or curved forms on curves as necessary in order to prevent a chord effect in the alignment of the finished work.

720.4.3

720.4.3 Existing Sidewalks and Driveways

720.4.3 Where a portion of an existing sidewalk or driveway is reconstructed, cut the existing section to a minimum depth of 2 inches with a suitable saw at the location designated by the RCE and remove the entire section to be recon-structed. Join the new sidewalk or driveway with the old work at this line.

720.4.4

720.4.4 Mixing and Placing Concrete

720.4.4 Batch and mix the concrete in accordance with the applicable requirements of Section 701.

720.4.4 Unless otherwise indicated on the Plans, construct concrete curbs, con-crete gutters, and concrete curb and gutters in uniform 10-foot sections, ex-cept where shorter sections are necessary for closures; but ensure that no section is less than 4 feet in length. Separate the sections by sheet steel templates or dividing plates set normal to the face and top of the curb. Care-fully set the plates during the placing of the concrete and keep in place until the concrete has set sufficiently to hold its shape. Remove the plates while the forms are still in place.

720.4.4 Deposit concrete in the forms so that the forms do not displace out of grade or alignment. During the placing operations, spade or vibrate the concrete throughout the entire mass and especially against the forms and joints.

Tamp, float, trowel, broom, edge, and finish the surface of the concrete to the typical section, lines, and grades as soon as practicable after the placing of the concrete. Leave the forms in place until the concrete has set sufficiently and their removal does not injure the concrete.

720.4.5

720.4.5 Extruded or Slip-Formed Curb or Curb and Gutter Construction

720.4.5 Unless otherwise specified and except on structures, concrete curb may be placed by an extrusion machine acceptable to the RCE. An accepted slip-form machine may be used to construct concrete curb or curb and gutter if satisfactory results are obtained. When, in the opinion of the RCE, satisfac-tory results are not being obtained, discontinue the extrusion or slip-form work and use the stationary form type of construction with no adjustment in com-pensation. Remove and replace unsatisfactory work without any additional compensation.

720.4.5 Construct expansion and weakened joints at the same locations as re-quired when form construction is being used. Make weakened joints, spaced at 10 foot intervals, by cutting the plastic concrete with a trowel or by other

720.4.6 720.4.7.1 acceptable methods. Ensure that the manner of construction of joints meets the approval of the RCE and has a workmanlike finish after edging.

720.4.6

720.4.6 Joints

720.4.6.1

720.4.6.1 Expansion Joints

720.4.6.1 Ensure that preformed expansion joints are ¾ inch thick and extend the full-depth of the concrete. Construct joints at the locations indicated on the Plans and at the following locations:

Wherever a sidewalk is constructed between an adjoining substantial structure on one side and curbing on the other side, form an expan-sion joint adjacent to the curbing.

Place an expansion joint between the sidewalk and the radius curb-ing at street intersections.

Where concrete sidewalks or medians are constructed adjacent to existing or new concrete pavement or structures, place a transverse expansion joints in the sidewalk or median opposite such joints in the concrete pavement or structure.

Where existing structures such as light standards, poles, fire hy-drants, etc., are within the limits of the sidewalk or median area, sur-round them with an expansion joint.

Place transverse expansion joints at intervals of not more than 100 feet in all concrete shapes.

720.4.6.2

720.4.6.2 Contraction Joints

720.4.6.2 Divide the concrete slabs in sidewalks between expansion joints into blocks 10 feet in length, by scoring transversely after floating operations are com-pleted. Where the sidewalk slabs are more than 10 feet in width, score them longitudinally in the center. Extend transverse and longitudinal scoring for a depth of 1 inch and not less than ¼ inch or more than ½ inch in width. Edge and finish joints smooth and true to line.

720.4.6.2 In concrete medians, locate transverse contraction joints, formed as de-scribed above, at intervals of not more than 25 feet and extend not less than a quarter of the median depth.

720.4.7

720.4.7 Final Finish

720.4.7.1

720.4.7.1 Curbs and Curb and Gutters

720.4.7.1 As soon as the concrete has set sufficiently, remove the forms from the exposed surfaces. Float and trowel the concrete on the curb face and top as necessary to provide a smooth uniform finish. Leave joint templates in place a minimal length of time to prevent bonding or distortion at the joint.

720.4.7.1 After the surface of the gutter has been properly shaped and prepared and the water sheen has disappeared, produce the final finish by brooming. Apply brooming transverse to the line of traffic. Ensure that joints are in a vertical plane perpendicular to the curb face. Make certain that joints are clean and

720.4.7.2 720.5 corners well rounded. Edge corners and conform to the typical cross-section.

Eliminate all tool marks in final finish.

720.4.7.2

720.4.7.2 Sidewalks, Gutters, Medians, and Driveways

720.4.7.2 Apply the final finish for sidewalks, gutters, medians, and driveways by brooming as specified in Subsection 720.4.7.1, unless otherwise directed.

As soon as the forms are removed from concrete median, rub down the sides to a smooth and uniform finish. Remove mortar or aggregate particles that spill onto the pavement.

720.4.7.3

720.4.7.3 Repair of Defects

720.4.7.3 As soon as the forms are removed from all concrete shapes, fill honey-combed places and other minor defects with a mortar composed of one part Portland cement and two parts sand. Plastering is not allowed. Replace sec-tions with visible cracks at no expense to the Department.

720.4.8

720.4.8 Protection and Curing

720.4.8 Protect the concrete as specified in Subsection 702.4.6 and cure with liq-uid membrane-forming compounds meeting the requirements of Subsection

702.2.2.11. Ensure that methods and rates of application of curing com-pounds are in accordance with Subsection 702.4.4.2.

720.4.9

720.4.9 Backfilling

720.4.9 After the concrete has set sufficiently and the forms have been removed, backfill the spaces on both sides to the required elevation with suitable mate-rial that is firmly compacted and neatly graded. Backfill concrete gutter so that the earth materials are a minimum of 1 inch above the concrete. Main-tain an earth roll on each side as necessary to prevent undermining of curb and gutter.

720.5

720.5 Measurement

720.5 The quantity for the pay item Concrete Curb, Concrete Gutter, or Concrete Curb and Gutter (of the type and size specified) is the length of the cast-in-place curb and/or gutter and is measured by the linear foot (LF), complete, and accepted. Concrete Curb and Gutter is measured along the roadway face of the curb at the gutter line. Concrete Curb and Concrete Gutter are both measured along the roadway at the finished grade elevation.

720.5 The quantity for the pay items Concrete Sidewalk, Concrete Driveway, and

Concrete Median is the finished surface area of the top of the cast-in-place sidewalk, driveway, or median and is measured by the square yard (SY), complete, and accepted. Deductions for drainage structures such as catch basins, drop inlets, etc., are in accordance with the Plans, the Specifications, and SCDOT Standard Drawings.

720.5 Excavation, when applicable and approved, is measured for in accordance with Subsection 203.5

720.6 720.6

720.6

720.6 Payment

720.6 Payment for the accepted quantity, measured in accordance with Subsection 720.5, is determined using the contract unit bid price for the ap-plicable pay item. Payment is full compensation for constructing curb and/or gutter as specified or directed and includes fine grading; compacting the sub-grade; formwork; concrete, reinforcing steel; joint templates; joint materials;

curing concrete; backfilling; and all other materials, labor, equipment, tools, supplies, transportation, and incidentals necessary to fulfill the requirements of the pay item in accordance with the Plans, the Specifications, and other terms of the Contract.

720.6 Excavation, when applicable and approved, is paid for in accordance with

Subsection 203.6.

720.6 Payment for each item includes all direct and indirect costs and expenses necessary to complete the work.

720.6 Pay items under this section include the following:

720.6

Item No. Pay Item Unit

7201000 Concrete Curb (9" X 15") LF

7201010 Concrete Bridge Curb (6") LF

7201100 Concrete Transition Curb LF

72020X0 Concrete Gutter Type (X) LF

7203110 Concrete Curb and Gutter (1'-6") LF

7203210 Concrete Curb and Gutter (2'-0") LF

7203240 Concrete Curb and Gutter (2'-6") LF

7203310 Concrete Curb and Gutter (3'-0") LF

7204100 Concrete Sidewalk (4” Uniform) SY

7205000 Concrete Driveway (6" Uniform) SY

7205100 Concrete Driveway (8" Uniform) SY

7206000 Concrete Median SY

601.1 601.1.2

DIVISION 600

MAINTENANCE AND CONTROL OF TRAFFIC

SECTION 601

WORK ZONE TRAFFIC CONTROL

601.1

601.1 Description

601.1.1

601.1.1 General

601.1 This section contains specifications for the materials, equipment, construc-tion, measurement, and payment for work zone traffic control conducted within the highway right-of-way in conformity with the Plans, the Specifica-tions, or as directed by the RCE.

601.1 The sections in Division 600 specify provision, fabrication, installation, performance, maintenance, relocation, and removal requirements of all traffic control devices, methods, and procedures as required by the Plans, the SCDOT Standard Drawings, the Special Provisions, the Supplemental Speci-fications, the manufacturer’s requirements and specifications, the latest edi-tion of the FHWA Manual on Uniform Traffic Control Devices adopted by the Department, hereinafter referred to as MUTCD, and the RCE.

601.1 The MUTCD, in effect when the Contract Proposal was advertised, pro-vides the minimum requirements for installation, operation, and maintenance of all traffic control devices.

601.1 For all sections in Division 600, the term "the Specifications" includes these Standard Specifications, the Special Provisions, the Supplemental Specifications, the Supplemental Technical Specifications, SCDOT Qualified Product Lists, SCDOT Qualified Product Policies, all SCDOT Construction and Traffic Control Policies, and all documents of any description including notes on the Plans and the SCDOT Standard Drawings that provide direc-tions, provisions, and requirements pertaining to the method and manner of performing the work, the quality and quantity of materials furnished, and the measurement and payment of work required to satisfactorily complete the project. All of these documents are the current edition in use by the Depart-ment.

601.1.2

601.1.2 Traffic Control Plan

601.1.2 Provide a Traffic Control Plan for the maintenance and control of traffic during work within the highway right-of-way. This includes work by the Con-tractor, subcontractor, sub-subcontractor, supplier, or anyone working within the highway right-of-way. Include in the Traffic Control Plan procedures and guidelines for providing for the safe passage of traffic through and/or around the project area with the intent of minimizing inconvenience to the traveling public. Ensure that the Traffic Control Plan is in conformity with the require-ments of these specifications, the Plans, the SCDOT Standard Drawings, the

601.1.2 601.1.3

Special Provisions, the Supplemental Specifications, the manufacturer’s re-quirements and specifications, the MUTCD, and the RCE.

601.1.2 Traffic control includes provision, installation, maintenance, repair, re-placement, relocation, and removal of all traffic control devices used for regu-lating, warning, or directing traffic. All items remain the property of the Con-tractor unless otherwise indicated in the Specifications or on the Plans.

601.1.1.2 Obtain approval for any Traffic Control Plan revisions due to modifications of the Plans, the plan quantities, the Specifications, and the project staging as presented in the Traffic Control Plan. Final approval of such revisions will be pending upon review by the DCE. Provide the RCE with a written request for each revision to the Traffic Control Plan not less than two weeks before im-plementation of the proposed revision.

601.1.1.2 Do not use off-road construction equipment or vehicles on portions of roadways open to the public. Include details for the use of all construction equipment or vehicles on portions of the roadway that are open to the travel-ing public in accordance with the Traffic Control Plan.

601.1.1.2 When the Specifications or the Plans do not cover a necessary traffic con-trol condition, obtain approval from the RCE for a plan of traffic control before beginning the work that requires traffic control.

601.1.1.2 The RCE is responsible for requesting the assistance of the South Carolina

Highway Patrol or local law enforcement when necessary unless the Contract includes a specific bid item for providing law enforcement assistance.

601.1.3

601.1.3 Restrictions

601.1.3 The Department reserves the right to restrict the installation of lane clo-sures on Interstate highways and high volume primary routes when the pres-ence of a lane closure would hinder normal traffic flow during holidays, ex-tended holiday periods, weekends, special events, or any time traffic is un-usually heavy. The Department's right to restrict construction operations in-cludes, but is not limited to, lane closures, road closures, shoulder closures, pacing operations, or any operation that would affect the efficient flow of traffic as determined by the RCE. Do not close travel lanes of high volume high-ways during peak traffic periods or at any time the traffic volume exceeds the numerical values determined to be acceptable by the RCE. Do not close lanes or streets with high volume commuter traffic in cities and urban areas during peak traffic periods unless otherwise specified and approved by the

RCE.

601.1.3 As stated above, the Department reserves the right to restrict construction operations when the continuance of the work would hinder normal traffic flow during extended holiday periods. An extended holiday period is hereby de-fined as those days preceding and following a holiday that experience signifi-cant increases in the volume of traffic due to the holiday as determined by the Department. The Department reserves the right to increase an extended holiday period if excessive traffic volumes occur during the days before and after the established extended holiday period. Extended holiday periods in-

601.1.3 601.1.4 clude, but are not limited to, the week of Thanksgiving, the weeks before and after Christmas, and the weeks before and after the 4th of July. Submit inquir-ies to the RCE regarding specific days of an extended holiday period not less than two weeks before entering into an extended holiday period. Make inquir-ies annually due to the progressive nature of the calendar.

601.1.3 The Department prohibits lane closures on multilane primary routes and

Interstate highways during holidays, holiday weekends, or special events unless otherwise directed by the Department. A holiday occurring on a week-day may require an extension of the holiday restrictions due to the proximity of the weekend as determined by the RCE. The Department defines most holiday weekends as from 12:00 noon of the Friday before the weekend or of the day before the holiday until 6:00 a.m. of the Monday after the weekend or the day after the holiday. The Thanksgiving holidays are defined as from 12:00 noon of the Wednesday before Thanksgiving Day until 6:00 a.m. of the Monday after Thanksgiving Day. The Christmas holidays are defined as from 6:00 a.m. of December 23rd through 6:00 a.m. of January 3rd. The RCE may extend Christmas holiday restrictions due to the proximity of the weekend.

Easter holidays are defined as from 12:00 noon of the Thursday before Easter until 6:00 a.m. of the Tuesday after Easter. Special events are events gener-ating excessive traffic as determined by the RCE.

601.1.3 Observe all time restrictions regarding lane closures, road closures, shoul-der closures, or pacing operations. The RCE may extend these time restric-tions as traffic conditions warrant. The Department reserves the right to sus-pend a lane closure or road closure if the RCE determines the resulting traffic backup is excessive. Observe and maintain all job specific time restrictions as specified by the Plans, the Specifications, and the RCE. Install and re-move lane closures, including all relative traffic control devices and signs, within all time restrictions. Coordinate work activities requiring lane closures, road closures, shoulder closures, or pacing operations in accordance with all restrictions.

601.1.4

601.1.4 Contractor’s Responsibility

601.1.4 These specifications set forth specific procedures and requirements and do not relieve the Contractor of any responsibilities incurred by the Plans, the SCDOT Standard Drawings, the Specifications, the manufacturer’s specifica-tions, the MUTCD, and the RCE.

601.1.4 The Contractor is responsible for maintaining the Traffic Control Plan as required by the Plans, the Specifications, the MUTCD, and the RCE. Ob-serve all requirements of the Traffic Control Plan, and ensure that all subcon-tractors working on the project site observe all requirements of the Traffic Control Plan. Before beginning any work, submit a plan for constructing the project and maintaining traffic to the RCE and obtain the RCE’s written ap-proval for the submitted plan before beginning the work.

601.1.4 Schedule and arrange all work, equipment, and materials to ensure the least inconvenience and the utmost in safety to the traveling public and to the Contractor's and the Department's forces. In observance of all safety regula-