Borough of Dallastown, PA Bituminous Paving and Surfacing

Certification.

Submit certification from bituminous and aggregate suppliers attesting that materials conform to Publication 408, Specifications.

Submit bituminous concrete mix design for approval.

Provide PennDOT certifications (CS-4171) with each load delivered to the job site.

Job conditions.

Control of traffic.

Take measures to control traffic during paving operations. Do not allow traffic on newly paved areas until adequate stability and adhesion have been attained and the material has cooled to 140° F. or less.

Employ traffic control measures in accordance with Publication 203, Work Zone Traffic Control.

Protect existing utilities as described in Article VI.

ADT	SRL	Alternatives
20,000 and above	E	None
5,000 to 20,000	H	E, H, blend of E and M, blend of E and G
3,000 to 5,000	G	E, H, G, blend of H and M, blend of E and L
1,000 to 3,000	M	E, H, G, M, blend of H and L, blend of G and L, blend of E and L
1,000 and below	L	Any

Base courses.

Bituminous concrete base course. Where indicated on the drawings[1] or requested by the municipality, construct bituminous concrete base course to compacted depth in accordance with Publication 408, Specifications, Section 350. Proof roll base course to the satisfaction of the municipality. The municipality shall approve crushed aggregate base course prior to placement of BCBC.

[1]

Editor's Note: Said drawings are included as an attachment to this chapter.

Superpave asphalt. Where indicated on the drawings,[2] construct HMA base course to compacted depth in accordance with Publication 408, Section 309.

[2]

Editor's Note: Said drawings are included as an attachment to this chapter.

Preparation of existing pavement surface.

Clean street surface of all dust, debris, loose stone, earth, or other deleterious material by means of hand brooms or approved power brooms.

Scarify areas shown on the drawings. Where the existing base is judged inadequate by the municipality, construct new base of the required type shown on Standard Detail DT02500-3.[3]

[3]

Editor's Note: Said Standard Detail is included as an attachment to this chapter.

Patch holes and depressions greater than one inch and less than four inches with ID-2 binder material, compacted in layers not exceeding two inches after compaction.

(4)

Holes greater than four inches in depth shall be sawed back to sound pavement, and patched with a minimum of six inches of crushed aggregate base course and two inches of ID-2 binder material.

(5)

Apply tack coat prior to overlaying existing pavement in accordance with Publication 408, Specifications, Section 460.

(6)

Milling of existing bituminous pavement shall be performed in accordance with Publication 408, Section 491, to the depth and limits specified in the drawings.

Saw cut all edges at intersections with streets and driveways and at the limits of work.

Millings must be disposed of properly.

Supply all water as needed.

Surface courses.

Bituminous surface course ID-2.

Construct binder course meeting the requirements of Publication 408, Specifications, Section 421, to compacted depth shown on Standard Details.[4]

[4]

Editor's Note: Said Standard Details are included as an attachment to this chapter.

Construct wearing surface meeting the requirements of Publication 408, Specifications, Section 420, to the compacted depth shown on Standard Details.[5] Apply tack coat on existing paved surfaces in accordance with Publication 408, Section 401.

[5]

Editor's Note: Said Standard Details are included as an attachment to this chapter.

Compaction.

Compact by rolling with steel-wheel, vibration or pneumatic tire rollers or a combination of these, to obtain specified layer thickness and until nonmovement of material under compaction equipment is achieved, unless other density requirements are required by the municipality.

The roller pattern and speed shall be monitored by the municipality to avoid roller marks, pattern segregation and displacement of hot mixtures.

Bituminous seal coat (single application). Construct bituminous seal coat in accordance with Publication 408 Specifications, Section 470.

(4)

Bituminous surface treatment (double application). Construct bituminous surface treatment in accordance with Publication 408 Specifications, Section 480.

(5)

Superpave asphalt.

HMA binder course. Construct HMA binder course to the compacted depth shown on the drawings and Standard Details and Publication 408, Section 409.[6]

[6]

Editor's Note: Said Standard Details are included as an attachment to this chapter.

HMA wearing course. Construct HMA wearing course to the compacted depth shown on the drawings and Standard Details and Publication 408, Section 409.[7]

[7]

Editor's Note: Said Standard Details are included as an attachment to this chapter.

HMA base course. Where required, construct in accordance with Publication 408, Section 309.

Joints.

Notch. The edge of an overlay shall be saw cut to a depth of 1 1/2 inch for the entire length of the joint and the detached material removed to a minimum notch width of 12 inches. Notch shall be skewed a minimum 6:1 unless otherwise noted. A cold planer may be used. The vertical face must be painted with E-6, E-8 or the same asphalt material used in mix design [Publication 408, Section 401.3(j)].

Sealing. All joints shall be sealed with rubberized joint-sealing material. When wearing course is placed adjacent to curb to form bituminous gutter, seal with hot bituminous material of the class and type designated for wearing course and extend to six inches from the curb, applied evenly.

Signs.

Install signs at locations shown on drawings or otherwise specified by the municipality.

Posts shall be installed in undisturbed earth with anchor top four inches above ground on lower slope side.

Where posts are located in concrete, drill the existing concrete to place anchor. If in new concrete, place PVC sleeve in concrete prior to placing post.

Field quality control.

Surface tolerance of base course. After the base course has been completed as specified, the surface smoothness shall be checked with approved templates, string lines, or straightedges.

Templates. The contractor shall furnish and use approved templates of required length and cut to the required crown of the finished surface of the base course for checking the crown and contour thereof. The templates shall be equipped with metal or other approved vertical extensions attached to each end, so that the bottom of the template will be at the elevation of the top of the aggregate. At least three such templates shall be furnished, and used at intervals of not more than 25 feet.

String lines. String lines, for controlling the finished elevation of the base course, shall be furnished with ample supports and offset along each side of the base course, and shall be maintained until all irregularities have been satisfactorily corrected.

Straightedges. Approved straightedges 10 feet in length shall also be furnished and used for testing longitudinal irregularities in the surface of the base course.

(d)

Surface irregularities. Any surface irregularities that exceed one inch shall be remedied by removing or adding bituminous material as required, after which the entire area, including the surrounding surface, shall be rolled until satisfactorily compacted.

Tests for depth of finished base course. During the progress of the work, the depth of the base course will be measured by the municipality and unsatisfactory work shall be repaired, corrected, or replaced. The municipality will not be liable for payment for any excess depth of base course.

The depth will be determined by cutting or coring holes to the full depth of the completed base course. One depth measurement may be required for each 1,500 square yards, or less, of completed base course. Any section in which the depth is 1/2 inch or more deficient in specified depth shall be satisfactorily corrected at no expense to the municipality.

All test holes shall be backfilled with similar material and satisfactorily compacted by and at the expense of the contractor. This operation shall be performed under the observation of the municipality who will check the depth for record purposes.

Surface tolerance of wearing course. After the wearing course has been completed as specified, the surface smoothness shall be checked with straightedges.

Straightedges. Approved straightedges 10 feet in length shall be furnished and used for testing longitudinal irregularities in the surface of the wearing course.

Surface irregularities. Any surface irregularities that exceed 3/16 inch shall be remedied by removing or adding wearing material as required, after which the entire area, including the surrounding surface, shall be rolled until satisfactorily compacted.

(4)

Tests for depth of finished wearing course. During the progress of the work, the depth of the wearing course may be measured by the municipality and unsatisfactory work shall be repaired, corrected, or replaced. The municipality will not be liable for payment for any excess depth of wearing course.

The depth will be determined by cutting or coring holes to the full depth of the completed wearing course. Test holes shall be excavated by the contractor at no expense to the municipality. One depth measurement may be required for each 1,500 square yards of completed wearing course. Any section in which the depth is 1/4 inch or more deficient in specified depth shall be satisfactorily corrected at no expense to the municipality.