A00001 New - Attachment 10. Additional Specifications.pdf

815 PAVED SURFACE CLEANING 1

814 ASPHALT PAVEMENT PATCHING (5/97)

1. DESCRIPTION

This work consists of patching potholes and skin patching of asphalt surfaces. The work includes preparing the area to be patched, furnishing and placing all necessary materials and work. All areas to be patched will be marked by the Government.

2. MATERIALS

Materials used for asphalt patching shall conform to the requirements in Sections 892 and 893.

Bituminous mixture material shall conform to requirements of Special Project Specifications.

3. MAINTENANCE REQUIREMENTS

a. Potholes

1) Existing materials shall be removed to a minimum of two (2) inches or as necessary to reach firm support, but limited to maximum twelve (12) inch depth. If firm support for a patch is not available, the hole shall be barricaded and the Government shall be notified.

Prior to Contractor placing any materials, Government will determine corrections to be made.

2) The edges of the prepared hole shall be extended to form a vertical face in un-fractured asphalt surfacing. The prepared hole shall generally be round or rectangular in shape and cleaned of all loose material. The bottom and sides shall be sprayed with an emulsified asphalt.

3) Prepared potholes shall be patched or barricaded immediately.

4) The bituminous mixture shall be placed in layers not exceeding four (4) inches. Each layer shall be compacted thoroughly with hand tampers, mechanical tampers, or rollers.

5) Finished surface shall, as a minimum, be compacted with a tamper or an 5- to 10-ton steel roller or comparable vibratory roller. Upon completion, the compacted pothole patch shall be flush with or not more than one quarter (1/4) inch above the level of the adjacent pavement.

b. Skin Patches

1) Prior to skin patching, potholes shall be patched.

2) Minor depressions, light raveling, or surface checking at scattered locations shown on the

Drawings or marked on the ground shall be treated by applying a skin patch.

3) Prior to skin patching, the surface shall be cleaned of loose and deleterious material, then sprayed with emulsified asphalt at the rate ordered by the Government. No bituminous mixture shall be placed until the prepared surface is approved by the Government.

815 PAVED SURFACE CLEANING 2

4) Bituminous mixture shall be distributed uniformly in layers not to exceed two (2) inches compacted depth. When multiple layers are required, joints shall be offset at least six (6) inches between layers.

5) Each layer shall be compacted with an eight (8) to ten (10) ton steel roller or comparable vibratory roller.

6) The completed patch shall have transitions which shall be at least as smooth as the adjacent pavement after twenty-four (24) hours of exposure to traffic.

c. Disposal

1) All materials removed from pothole and skin patching operations shall be removed to a disposal site designated by the COR or shown on the drawings.

4. MEASUREMENT

a. Bituminous Mixture

1) Hot and cold bituminous mixture acceptable placed will be measured by the ton.

Bituminous materials incorporated into the mixture will be incidental to the item.

2) Ton Measure - The quantity of mixture will be the number of tons in the accepted work.

Any material rejected in the field as not meeting specifications shall be deducted based on estimated quantities. Rejected quantities shall be reconciled between the Government and the Contractor each day. If not reconciled each day, the Government's figures will apply.

b. The following work is incidental:

1) Cleaning of surfaces.

2) Haul and compaction of bituminous mixture.

3) Material removal and disposal.

4) Emulsified asphalt used on existing surfaces will be measured by the gallon prior to dilution. Dilution materials shall be considered incidental.

5. PAYMENT

a. The accepted quantities will be paid for at the contract unit price shown in the Schedule of Items.

b. Payment will be made under:

Pay Item Description Pay Unit

814 (1) Pothole Patching Ton

834 DRAINAGE STRUCTURE MAINTENANCE 1

834 DRAINAGE STRUCTURE MAINTENANCE (5/97)

1. DESCRIPTION

This work consists of cleaning and reconditioning culverts and other drainage structures.

2. MAINTENANCE REQUIREMENTS

a. Drainage structures, inlet structures, culverts, catch basins, and outlet channels shall be cleaned when required by the Government. Catch basins shall be cleaned by removing the material within 10 feet all around the culvert inlet.

b. The transition from the ditch line to the catch basin shall be cleaned a distance of ten (10) feet.

Outlet channels and lead-off ditches shall be cleaned a distance of six (6) feet. Debris and vegetation shall be removed and placed so as to not enter the channel or ditch or obstruct traffic.

c. Hydraulic flushing of drainage structures is not allowed unless provided for in Special Project Specifications.

d. Cleaning and reconditioning is limited to the first four (4) feet of inlet and outlet determined along the top of the structure. Ordered reconditioning of culvert inlet or outlet shall be by field methods such as jacking out or cutting away damaged metal which obstructs flow. All cut edges and damage to galvanized coating shall be cleaned and treated with zinc rich coating. Damage or obstructions which are not field corrected under the requirements of this Section shall be reported to the Government.

3. MEASUREMENT

a. Measurement will be the as shown on schedule of items

b. Reconditioning and cleaning of drainage structures will be incidental to cleaning.

4. PAYMENT

a. Quantities as determined above will be paid at the contract unit price.

b. Payment will be made under as shown on schedule of items.

842 CUTTING ROADWAY VEGETATION 1

842 CUTTING ROADWAY VEGETATION (5/97)

1. DESCRIPTION

This work consists of cutting all vegetative growth including trees and other vegetation less than four (4) inches in diameter.

2. MAINTENANCE REQUIREMENTS

a. General

1) Brush, trees, and other vegetation less than four (4) inches in diameter within each area treated shall be cut to a maximum height of six (6) inches above the ground surface or obstruction such as rocks or existing stumps. When work is performed under this Section, the Contractor shall remove all limbs which extend into the treated area or over the roadbed to a height shown in the Special Project Specifications.

2) Signs, markers, and other road appurtenances are designated to be retained. Other items to remain will be marked on the ground.

3) The width of the vegetation to be cut shall be as shown in the Special Project Specifications.

4) Work may be performed either by hand or mechanically unless specifically shown in the

Road Listing and Schedule of Items. Self-propelled equipment shall not be allowed on cut and fill slopes or in ditches.

5) Damage to trunks of standing trees caused by Contractor's operation shall be corrected by Contractor, either by treatment with a commercial nursery sealer or by removing the tree as directed by the Government.

6) Mechanical brush cutters shall not be operated when there are non-Contractor personnel or occupied vehicles within a hazardous distance of immediate operating area.

7) Trees within the cutting limits which are over four (4) inches in diameter shall be limbed in lieu of cutting

8) When trees are limbed, limbs shall be cut within four (4) inches of the trunk

b. Cutting Side Vegetation

1) Pass mile work will be ordered in four (4) foot increments of width regardless of slope deviations.

2) Side mile work will be ordered in uniform width for the length of the listed segments of roads.

842 CUTTING ROADWAY VEGETATION 2

3) Unless otherwise included in Special Project Specifications work shall commence at the edge of the traveled way and proceed away from the road centerline. For roads without a defined traveled way the starting point for cutting will be marked in the field or defined in Special Project Specifications.

4) Transitions between differing increments of cutting width shall be provided. Transitions shall be accomplished in a taper length of not less than fifty (50) nor more than seventy (70) feet

c. Debris

1) Materials resulting from the cutting operation in excess of one (1) foot in length or three (3) inches in diameter, shall not be allowed to remain on roadway slopes within the treated area, in ditches, or within water courses.

2) Limbs and chunks in excess of three (3) inches in any dimension shall be removed from the traveled way and shoulders.

3) Materials may be scattered downslope from the roadbed, outside of the work area and drainages. Concentrations shall be rescattered or removed.

3. MEASUREMENT

a. Measurement for cutting vegetation by the pass mile will be determined by the length of each pass will be determined to the nearest one-tenth (1/10) mile on each road.

b. No reduction in the mileage between road terminal shown on the road listing will be made for areas where there is little or no vegetation to be cut.

4. PAYMENT

a. The accepted quantities will be paid at the unit price shown in the Schedule of Items.

Pay Item Pay Unit

842 (1) Pass Mile

Description

. Cutting Side Vegetation

892 BITUMINOUS PRODUCTS 1

892 BITUMINOUS PRODUCTS (5/97)

1. ASPHALT CEMENTS

Asphalt cement shall meet the requirements of AASHTO M 20 for penetration graded asphalt cement and to AASHTO M 226 for viscosity graded asphalt cement.

2. LIQUID ASPHALTS

Liquid asphalts shall meet the requirements of the following specifications:

Rapid Curing Liquid Asphalts AASHTO M 81

Medium Curing Liquid Asphalts AASHTO M 82

Slow Curing Liquid Asphalts AASHTO M 141

3. EMULSIFIED ASPHALTS

Emulsified asphalts shall meet the requirements of the following specification:

Emulsified Asphalt (Anionic) AASHTO M 140 (ASTM D Emulsified Asphalt (Cationic) AASHTO M 208* (ASTM D 2397)

4. BITUMINOUS DUST

Bituminous dust palliatives shall meet the requirements listed in Table 892.06

5. CERTIFICATE OF COMPLIANCE

a. In accordance with the requirements of Contract , the following format is established.

Consignee ____________________ Designation ___________________

Contract Number _______________ Date _________________________

Identification (Truck No., Car No., Etc.) _________________________________

Type and Grade _____________ With Additive (%, brand) __________

Loading Temperature _________ Net Weight _____________________

892 BITUMINOUS PRODUCTS 2

Net Gallons _________________

b. The shipment of bituminous material identified above and covered by the bill of lading complies with Government Standard Specification as modified by Special Project Specifications applicable to this project.

Producer ___________________ Signed _________________________

(Producer’s Representative)

6. APPLICATION TEMPERATURES

Bituminous materials shall be applied within the temperature ranges indicated in Table 892.06.

TABLE 892.06 - Application Temperatures

Application Temperature Range # (Degrees F)

Type & Grade of Material Spray Min./Max

Mix Min./Max.

RT 1-2-3 60-130 60-130

RT 4-5-6 85-150 85-150

RT 7-8-9 150-225 50-225

RT 10-11-12 175-250 175-250

RTCB 10-11-12 60-120 60-120

RC-MC-SC 70 105-185 90-155

RC-MC-SC 250 140-225 125-200

RC-MC-SC 800 175-265 160-225

RC-MC-SC 3000 215-290 200-260

DO-1-2-3 80-125

DO-4 80-175

Emulsified Asphalts:

RS-1, SS1, SS-1H, & CRS-1,

CSS-1, CSS-1H

75-130 70-160

RS-2, MS-2, CR-2, & CMS-2S,

CMS-2

110-160 70-160

DO-6-7-8 50-140

Asphalt Cement (All Grades)

400 Max. 250-325

892 BITUMINOUS PRODUCTS 3

As required to achieve viscosity of 75-150 seconds. Saybolt-Furol or as required to achieve a Kinematic viscosity of 150-300 centistrokes.

7. EQUIPMENT

The Contractor shall provide equipment for heating and applying the bituminous material. The bituminous distributor shall be self-powered and mounted on pneumatic tires. It shall be equipped with a pump and a circulating spray bar. The unit shall include a tachometer, pressure gauges, accurate volume measuring devices such as a visual volume dial or gauge calibrated to the tank, and a tank thermometer.

All equipment shall be standard, commercial types, of proven performance.

8. WEATHER LIMITATIONS

Bituminous dust palliative treatment shall be applied only when the surface to be treated contains sufficient moisture to get uniform dispersion of the dust palliative when the road surface and atmospheric temperature are 50 degrees F or more and rising, or above 60 degrees F if falling; and when the weather is not foggy, rainy, or stormy.