20-Attachment C - Supplemental Specifications.pdf
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- Attached to
- Cape Seal Pavement Preservation
- Solicitation number
- IFB-26-00111
- Issued by
- Hillsborough County, Florida
About this file
This is a Supplemental Specifications document for Hillsborough County, Florida's pavement preservation project, establishing technical requirements and standards for construction work. The project involves cape seal pavement treatment at four designated locations: Imperial Key (Group ID: 11680), Wyndham Lakes Drive (Group ID: 12330), Tarpon Drive (Group ID: 16180), and River Close Boulevard (Group IDs: 22640 & 22660). The work will be performed in accordance with Hillsborough County Public Works Standard Specifications (October 2023 Edition), FDOT FY 2023-24 Standard Plans and FY 2024-25 Standard Specifications, and county-specific technical manuals for utilities and stormwater management. The contractor is responsible for developing a Construction Phasing Plan and Maintenance of Traffic Plan while maintaining one lane of traffic in each direction and all existing auxiliary turn lanes. The contractor must also handle utility coordination, obtain required permits (NPDES Notice of Intent and Temporary Traffic Control Permit), and distribute resident notifications in residential areas no more than 24 hours prior to treatment. The project is estimated at $2,010,823.90.
The specifications establish detailed requirements for cape seal application, including specific equipment, materials, and construction methodologies. Two asphalt emulsion distributor trucks are required, with equipment calibrated within the previous twelve months and capable of applying material at controlled temperatures and rates from 0.035 to 1.5 gallons per square yard. Cover aggregate must be washed granite conforming to FDOT specifications, while micro-surface aggregate must be 100 percent crushed stone meeting specified gradations. The contractor is responsible for all sampling and testing costs using FDOT-qualified laboratories approved by the county, with the county performing quality assurance testing at no cost to the contractor. The contractor must provide a three-year warranty covering all labor, materials, hauling, traffic control, and striping repairs for defective areas including debonding, delamination, bleeding, raveling, and aggregate loss. Construction is prohibited when surface temperatures are below 55 degrees Fahrenheit or above 140 degrees Fahrenheit, when relative humidity exceeds 80 percent, or during rain, with specific requirements for curing periods of crack filler (minimum 14 days) and chip seal settling (minimum 2 days before micro-surface application).
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Supplemental Specifications
Section 1 - Specifications
1.01R Workmanship And Materials
This project is to be constructed utilizing Hillsborough County Public Works Standard Specifications for Construction October 2023 Edition; FDOT FY 2023-24 Standard Plans for Road and Bridge Construction (or most current edition); FDOT Standard Specifications for Road and Bridge Construction FY2024-25 (or Latest Edition); with the exception of Division I and Division II Sections 100 through 103 and 105; Hillsborough County Public Utilities Water, Wastewater and Reclaimed Water Technical Specifications November 2021 and Hillsborough County Public Utilities Water, Wastewater, and Reclaimed Water Technical Manual October 2023 (or most current) Edition; Hillsborough County Stormwater Technical Manual 2023; Tampa Electric Company Standard Electric Service Requirements, latest edition, available from Tampa Electric Company; ANSI-A300 American National Standard for Tree Care Operations – Tree, Shrub, and Other Woody Plant Management- Standard Practices (Root Management), and its companion publication Root Management, Best Management Practices by the International Society of Arboriculture, and the Supplemental Specifications herein. Any conflict between the documents shall be resolved in accordance with the requirements of the Hillsborough County General Terms and Conditions.
With the exception of the Specifications contained herein and the Hillsborough County Public Utilities Water, Wastewater and Reclaimed Water Technical Specifications October 2023, Hillsborough County Public Works has adopted the FDOT FY 2023-24 Standard Plans for Road and Bridge Construction (or most current edition); and FDOT Standard Specifications for Road and Bridge Construction FY2024-25 (or Latest Edition) for use on Public Works Construction Projects, with the following exceptions/clarifications:
A. FDOT Standard Specifications for Road and Bridge Construction Division I, Sections 1 through 9 and
Division II Sections 100 through 103 and 105 are omitted from this contract and replaced in their entirety by Hillsborough County’s General Terms and Conditions and Standard Specifications 01010 through 01700. References contained in Division II and Division III of the FDOT Standard Specifications related to Division I shall be replaced with the appropriate corresponding Article(s) or Technical Specifications referenced above. References to FDOT Division I Specification(s) that do not have a corresponding Article(s) or Technical Specification shall be clarified by the COUNTY’s Project Manager.
B. Paragraph Not Applicable
C. The following FDOT Standard Specifications for Roadways and Bridges are replaced and/or modified with the corresponding Hillsborough County Standard Specification sections contained herein:
204 Graded Aggregate Base 283 Reclaimed Asphalt Pavement Base 320 Hot Bituminous Mixtures; Plant, Methods and Equipment, 327 Milling of Existing Asphalt Pavement, 330 Hot Bituminous Mixtures General Construction Requirements, 334 Superpave Asphalt Concrete, 336 Asphalt Rubber Binder, 337 Asphalt Concrete Friction Courses, 341 Asphalt Rubber Membrane Interlayer, 600 Traffic Signal Overview 603 General Requirements for Installation and Evaluation of Traffic Control Equipment and Material 611 Signal Installation Acceptance Procedures 620 Signal Installation Grounding 630 Conduit https://assets.contentstack.io/v3/assets/blteea73b27b731f985/blt2f95697d515cb87c/Standard%20Specifications%20for%20Construction%202023.pdf https://assets.contentstack.io/v3/assets/blteea73b27b731f985/blt2f95697d515cb87c/Standard%20Specifications%20for%20Construction%202023.pdf https://www.fdot.gov/design/standardplans/2024/24.shtm https://fdotwww.blob.core.windows.net/sitefinity/docs/default-source/programmanagement/implemented/specbooks/fy-2024-25/fy2024-25ebookfinalcomp-revised1-24-24.pdf?sfvrsn=15b17f9c_1 https://fdotwww.blob.core.windows.net/sitefinity/docs/default-source/programmanagement/implemented/specbooks/fy-2024-25/fy2024-25ebookfinalcomp-revised1-24-24.pdf?sfvrsn=15b17f9c_1 https://hcfl.gov/businesses/land-development/technical-publications/public-utilities-technical-specifications https://hcfl.gov/businesses/land-development/technical-publications/public-utilities-technical-specifications https://hcfl.gov/businesses/land-development/technical-publications/public-utilities-technical-manuals https://assets.contentstack.io/v3/assets/blteea73b27b731f985/bltb859e75c281dd885/Stormwater%20Management%20Technical%20Manual%202023.pdf https://hcfl.gov/businesses/land-development/technical-publications/public-utilities-technical-specifications https://hcfl.gov/businesses/land-development/technical-publications/public-utilities-technical-specifications https://www.fdot.gov/design/standardplans/2024/24.shtm https://fdotwww.blob.core.windows.net/sitefinity/docs/default-source/programmanagement/implemented/specbooks/fy-2024-25/fy2024-25ebookfinalcomp-revised1-24-24.pdf?sfvrsn=15b17f9c_1
632 Signal and Interconnect Cable 634 Span Wire Assembly 635 Pull and Junction Boxes 639 Electrical Power Service Assemblies 650 Vehicular Signal Assemblies 652 24/7 Solar Flashing Beacon Assembly 653 Pedestrian Signal Assemblies 660 Inductive Loop Detectors 662 3-M Opticom™ Priority Control Preemption Detection 665 Pedestrian Detector Assembly 670 Traffic Controller Assembly 676 Controller Cabinets 699 Internally Illuminated Signs 901 Coarse Aggregate, 902 Fine Aggregate, 916 Bituminous Materials, and 919 Ground Rubber Tire.
The CONTRACTOR Quality Control requirements outlined in these Sections are required as described herein.
D. CONTRACTOR Quality Control (CQC) program requirements referenced within the FDOT Standard
Specifications are not required on Hillsborough County projects. However, the CONTRACTOR is responsible for constructing the project in accordance with the contract documents and ensuring compliance with the specifications. Therefore, the CONTRACTOR is responsible for scheduling and performing testing as required to ensure contract compliance. All testing performed by the CONTRACTOR must be performed by a FDOT qualified testing laboratory approved by the COUNTY.
The COUNTY will perform Quality Assurance testing to ensure CONTRACTOR compliance with the contract documents. This testing is solely for the COUNTY’s benefit. The COUNTY’s testing is not intended to relieve the CONTRACTOR of performing testing and they are not permitted to rely on this testing to ensure their contract compliance. Quality Assurance testing by the COUNTY in no way relieves the CONTRACTOR or their Subcontractors of their responsibility to provide quality materials and workmanship on the project. No act or omission on the part of the COUNTY, Professional, any inspector(s), or representative of the COUNTY shall be construed as relieving CONTRACTOR of this responsibility.
E. If the CONTRACTOR desires to utilize materials, means, or methods which in accordance with the
FDOT specifications requires Quality Control testing and approval by the Engineer, the testing shall be performed at the expense of the CONTRACTOR , and reviewed for acceptance by the COUNTY. The COUNTY also reserves the right to require testing above and beyond the FDOT specified LOT testing in situations when the testing of LOT quantities will not provide a reasonable assurance of the quality of the work. This additional testing by the CONTRACTOR will be at no additional cost to the COUNTY.
F. At the CONTRACTOR’s option he may submit a Value Engineering Change Proposal, also know as a Cost Savings Initiative Proposal (CSIP), or hereinafter referred to as a VECP or CSIP in accordance with FDOT Standard Specifications for Road and Bridge Construction, Section 4- 3.9, Value Engineering Incentive, or Cost Savings Initiative Proposal. The COUNTY reserves the right to reject at its discretion any VECP or CSIP submittal and the CONTRACTOR shall remain obligated to perform the WORK in accordance with the terms of the existing Contract.
G. At the COUNTY’s option and the CONTRACTOR’s concurrence, a version of the FDOT Dispute
Review Board (DRB) process may be utilized as a means of Alternative Dispute Resolution. This process shall be in accordance with the Contract General Conditions and non-binding. The COUNTY and CONTRACTOR shall share all costs of the DRB equally.
H. The use of the term “Department” in the FDOT Specifications is replaced by COUNTY except in those instances where the FDOT is the controlling organization.
I. The terms Engineer, Project Manager and Project Representative are interchangeable between the various
Contract Documents.
J. Control of Materials: The County will accept approved FDOT Quality Product List (QPL) products and materials unless stated to the contrary herein.
1.02R Project Sign – Attachment A
Project identification sign(s) shall be provided by the COUNTY.
1.03R Schedule
The CONTRACTOR’s project schedule shall encompass the project’s entire construction duration specified in the CONTRACT and may not indicate a shorter duration. Additionally, the schedule shall reflect the construction phasing specified in the CONTRACT and shall include all WORK, including work to be performed by others such as coordination, material acquisition, utility relocation, COUNTY submittal reviews, permit reviews and approvals, etc.
Bar Chart: The bar chart schedule as described in Section 01310 of the Standard Specifications shall be required under this contract.
CPM: The CPM schedule as described in Section 01311 of the Standard Specifications shall not be required under this contract.
1.04R Special Working Hours- Not applicable.
1.05 Clearing & Grubbing
Clearing & Grubbing shall be performed in accordance with FDOT Specification Section 110. Additionally, specified plowing of the surface shall include the removal of the top layer of organic material beginning from the original ground line and if applicable stockpiling of the material for future use on the project. No additional compensation shall be provided for this WORK or associated WORK.
1.06 Pedestrian Facilities
A. All pedestrian facilities shall be constructed in accordance with the Americans with Disabilities Act (ADA) and the Department of Transportation Regulation 49 CFR, Part 37.
B. Sidewalks and curb ramps shall be constructed in accordance with the FDOT Design Standards 2010 (or the latest edition at time of bid opening) Index 304. Residential sidewalks adjacent to driveways shall be six (6) inches depth up to the first construction joint, which shall be a distance of five (5) feet measured from the edge of the driveway. Sidewalks/Ramps adjacent to roadways shall be six (6) inches in depth up to the first construction joint which shall be a minimum distance of six (6) feet measured from the edge of pavement, or back of curb. The construction joint may not transect the detectable warning surface.
C. Detectable warning surfaces, as defined by the latest edition of FDOT Standard Specifications for Road and Bridge Construction - Specification 527, will be utilized in lieu of tactile surfaces. Detectable warning surfaces must be capable of supporting vehicular traffic and no waivers to the warranty are acceptable. All references to tactile surfaces in the Hillsborough County Standard Specifications for construction shall be interpreted as referring to detectable warning surfaces. In order to meet ADA visual contrast requirements, the standard color for application on Hillsborough County maintained roads is red, unless otherwise directed by the Project Manager. If field conditions exist in which red would not create sufficient contrast, the Project Manager should be notified in order to determine if another color should be utilized. On FDOT maintained roads, the color requirements may vary and should be confirmed prior to placement.
D. Typical Layout of Ramp Pay Item is below:
- End of Section -
Section 2 – Project Specific
2.01R Office Facilities No field offices are required.
2.02R Superpave Asphalt Unit of Measure Not applicable.
2.03R Environmental Project Signs Not applicable.
2.04R Construction Phasing
The CONTRACTOR is responsible for developing the project Construction Phasing Plan/Maintenance of Traffic Plan and associated coordination with Utilities, Agencies, affected landowners, etc. The CONTRACTOR shall maintain one lane of traffic in each direction. Additionally, the CONTRACTOR shall maintain all existing auxiliary turn lanes throughout the duration of the project, even during temporary traffic shifts.
2.05R Temporary Loop Detectors: Not applicable.
2.06R Geotechnical Information – Not applicable.
A. Geotechnical information has been provided for the project as part of these Contract Documents. This information is provided for the Bidder’s information only and is not intended to be a complete description of the subsurface conditions. The Bidder or the CONTRACTOR is not relieved of any duty as otherwise required in these Contract Documents to examine the site of the proposed work or to make any investigations or inquiries, including, but not limited to additional subsurface testing, because the COUNTY has provided this information. Any such examinations, investigations, inquiries or testing performed by the Bidder or CONTRACTOR shall be done at such Bidder's or CONTRACTOR’s own expense.
B. Any reports provided are for the CONTRACTOR’s general information. The COUNTY disclaims all responsibility for the findings and interpretations expressed in the reports by the testing laboratories. The CONTRACTOR shall make whatever subsurface and geotechnical investigations it deems necessary as to actual field conditions and to comply with the requirements of the Contract Documents.
2.07R Utility Coordination
Any conflicts between the WORK that the CONTRACTOR shall perform and the utility owner’s facilities shall be resolved by the CONTRACTOR and the utility owner with the COUNTY’S concurrence. Utility Relocation Schedules and timelines included in the Contract Documents are intended to demonstrate the relationship between the utility relocation phasing plans and the construction phasing plans developed during the design of the project.
2.08R Permits
A. Pursuant to the General Conditions, the COUNTY has obtained the following permits:
Not applicable
B. Pursuant to section 218.80, Florida Statutes, Hillsborough County discloses that the permits and fees listed below are the responsibility of the CONTRACTOR.
PERMIT COST
Hillsborough County Right of Way Use Permit $ 00.00 NPDES Notice of Intent Note: Less than 1 acre not required 1-5 acres $250.00 Over 5 acres $400.00
Hillsborough County Temporary Traffic Control Permit $ 00.00
2.09R Specific Provisions – Cape Seal Specification
a. Description:
The work specified in this section consists of furnishing and applying multiple bituminous surface treatments composed of an asphalt emulsion chip seal followed by the application of asphalt emulsion micro-surface on a paved roadway or on a prepared road base, compacted to the lines, grades, and thickness established by the County and in substantial conformance with the limits established by the owner.
b. Materials:
I. Cover Aggregate for the Chip Seal:
Cover aggregate for the chip seal shall conform to FDOT specifications section 901, Table 1 for #89, #78 or #67 gradation for coarse aggregates except as modified under the Chip Seal Specification in this bid package. The aggregate shall be washed granite obtained from a source approved by the owner.
Sampling and testing of aggregate shall be the responsibility of the Contractor. Copies of test results from the aggregate supplier shall be furnished to the County prior to the start of the surface treatment.
II. Aggregate for Micro-surface:
Use an aggregate consisting of 100% crushed stone. The aggregate shall be a crushed stone such as granite, slag, limestone, chat, or other high-quality aggregate, or a combination thereof, and conform to the Micro-surfacing Specification in this bid package.
a. High Performance Micro-surface Emulsion:
Provide a quick-traffic, polymer-modified emulsified asphalt conforming to the requirements specified in AASHTO M 208 for CSS-1EP. The product should meet the performance and technical criteria outlined in this bid package. Contractor may propose the project listed in Ergon Asphalt and Emulsion CSS-1EP Product Data Sheet OR submit an equivalent product alternative that meets all applicable test procedures, specifications, and mix design provided herein.
b. Mineral Filler:
If mineral filler is utilized in the micro-surface mix design, use non air-entrained Portland cement or hydrated lime that is free from lumps, consistent with the requirements of the Micro-surface Specification in this bid package.
c. Water:
Utilize water that is potable and free of harmful soluble salts, reactive chemicals, or any other contaminants.
d. Additives:
Additives may be added to the mixture or any of the component materials to provide control of quick-trafficking properties. The additives to be used should be indicated on the mix design and be compatible with the other components of the mix.
e. Crack Filler:
When required for the project, utilize a crack filler meeting the material requirements of the Crack Filling/Sealing Specification. Pre-treat any cracks in the pavement's surface with a crack filler meeting the requirements of FDOT Developmental Specification Section 305 prior to the application of the microsurfacing. Fill any cracks with a width greater than 1/4 inch. Do not overfill the cracks. Crack filling material must cure for a minimum of 14 days prior to application of the microsurfacing.
f. Material Samples:
The County will require the Contractor to sample and test each load of emulsion prior to delivery.
The Contractor will also provide a sample of the emulsion, on site, prior to commencing work.
The County will require the Contractor to provide sample containers and a local independent testing laboratory with no affiliation to the emulsion supplier for the analyzing of emulsion. The Contractor will be responsible for the cost of the testing. The County reserves the right to test any shipment of emulsion that is believed to be of substandard. All samples shall be shipped and stored in clean airtight sealed wide mouth jars or bottles made of plastic.
III. Equipment:
a. Asphalt Emulsion Distributor:
The liquid bituminous material shall be applied with a truck mounted, pressure distributor that has been calibrated within the previous twelve (12) months, for transverse and longitudinal application rate. The distributor shall be equipped, maintained and operated so that the bituminous material can be applied at controlled temperatures and rates from .035 to 1.5 gallons per square yard. The distributor shall be capable of applying bituminous material of variable widths up to sixteen (16) feet. The distributor shall uniformly apply the bituminous material to the specified rate with a maximum allowed variation of 0.015 gallons per square yard. Distributor equipment shall include tachometer, accurate volume measuring device, a calibrated tank and a thermometer for measuring the temperature of the tank’s contents. Distributors shall be equipped with a heating device, asphalt pump and full circulating spray bars adjustable laterally and vertically. Distributors and transport trailers shall be equipped with a sampling valve. Distributor trucks shall be of the pressure type with insulated tanks. The use of gravity distributors will not be permitted. The valves shall be operated by levers so that one or all valves may be quickly opened or closed in one operation. The valves which control the flow from nozzles shall act positively so as to provide a uniform unbroken spread of bituminous material on the surface. The distributor shall be equipped with devices and charts to provide for accurate and rapid determination and control of the amount of bituminous material being applied and with a bitumeter of the auxiliary wheel type registering speed in feet per minute, and trip and total distance in feet. Two distributor trucks will be required on all projects.
January 1, 2017
b. Aggregate Spreader:
The aggregate spreader shall be a self-propelled unit capable of uniformly spreading the aggregate at the required rate on a minimum width of six (6”) inches wider than the width of the lane to be treated. The spreader shall be calibrated within the previous twelve (12) months for transverse and longitudinal application. The spreader shall be capable of extending to a width of 22 feet. The spreader shall be equipped with a computer-controlled aggregate/chip spreader in order to ensure the appropriate aggregate coverage at varying speeds, unless approved otherwise by Engineer.
c. Rollers:
The Contractor shall use one, ten (10) ton steel wheeled roller and two, eight (8) to twelve (12) ton self-propelled pneumatic tire rollers with oscillating wheels and low pressure, smooth tires. Maintain the inflation of the tires such that in no two tires the air pressure varies more than 5 psi. The rollers will be equipped with an operating water system and coco pads. A sufficient number of rollers and a sufficient number of passes shall be used to ensure cover aggregate is properly rolled. The final passes of the rolling process shall be performed by a static steel wheel roller, which shall be operated without the vibrating function.
d. Self-Propelled Rotary Power Broom:
The self-propelled rotary broom shall be designed, equipped, maintained and operated so the pavement surface can be swept clean. The broom shall have an adjustment to control the downward pressure.
e. Mixing Equipment:
Use a machine specifically designed and manufactured to place micro surfacing consistent with the requirements of the microsurfacing specification of this bid package. Truck mounted and self-loading continuous machines are acceptable.
f. Spreading Equipment:
The spreading equipment should be a mechanical squeegee type equipped with flexible material in contact with the surface to prevent loss of the microsurfacing slurry from the distributing box. There should be a flexible rear strike-off which is adjustable in width and capable of producing a uniform surface its full width. For detailed requirements, refer to the microsurfacing specification of this bid package.
g. Additional equipment:
Additional equipment will be needed to complete the operations required by this technical provision. All equipment necessary for the successful completion of projects governed by this technical provision shall be included in the unit costs associated herein. Availability of quality assurance devices (such as a 10' straight edge) shall be the responsibility of the Contractor.
IV. Construction:
a. Layout:
The Contractor will be responsible for the string lining and lay out of the roadway prior to paving.
b. Weather and Seasonal limitations:
The surface treatment shall not be applied to a wet surface or when rain is occurring, or the threat of rain is present immediately before placement. The surface treatment shall not be applied when the surface or/and air temperature is less than 50 degrees Fahrenheit in the shade. If Relative humidity is between 75% and 80%, additional time may be required to allow the emulsion to set before the lane can be opened to traffic. Operations may not continue if the relative humidity is above 80%. When applying emulsions, the temperature of the surface shall be a minimum of 55°F, and no more than 140°F.
If an unexpected rainstorm ensues, sufficient aggregate should be spread to cover all of the applied binder. If possible, the road or lane should be closed to traffic and, if not, traffic should be kept to a minimum speed during this period by use of pilot vehicles. The amount of rolling should be reduced, if not completely ceased, while the aggregate is wet, to avoid binder emerging from the voids and be picked up on the wheels of the roller.
c. Preparation of Surface:
The chip seal material shall be placed on a firm unyielding prepared roadway. Any patching or crack sealing that the Contractor is also authorized to perform for the project should be done a minimum of 14 days prior to the chip seal application.
The Contractor shall be responsible for clipping back shoulders and removing overburden or any other vegetation or debris to ensure that the road is free of organic and deleterious material. The Contractor shall spray all cut back edges with a pre-emergent herbicide before and after treatment. The Contractor will be responsible for blowing or sweeping the road immediately ahead of the chip seal operation to make sure the road is free of loose aggregate and other debris, as well as sweeping and cleaning the streets after treatment. If, in the opinion of the Engineer, the hand cleaning is not sufficient then a self-propelled street sweeper shall be used.
All manhole and valve covers, inlets and other service entrances, etc., shall be protected from bituminous material by placing reinforced waterproof, all-purpose paper or other suitable material, approved by the Engineer.
Thermoplastic striping and pavement markings, raised pavement markers, and raised pavement marker adhesive shall be removed.
Micro-surfacing may be used as rut fill if so contracted for the specific project to level bumps, waves and corrugations.
d. Resident Notification In residential areas, the Contractor shall distribute by hand, a typed notice to all residences and businesses on the street to be treated. The notice will be delivered no more than 24 hours prior to the treatment of the road. The notice will have a County phone number that the residents may call to ask questions. The notice shall be of the door hanger type which secures to the door handle of each dwelling.
Unsecured notices will not be allowed. The Contractor shall also place the notice on the windshield of any parked cars on the street. Hand distribution of this notice will be considered incidental to the contract.
e. Traffic Control:
The Contractor shall furnish all necessary traffic control, barricades, signs and flagmen, to ensure the safety of the traveling public and to all working personnel.
Traffic shall not travel on fresh mix until rolling and blotting has been completed.
All traffic control shall be in accordance with the FDOT Roadway Design Standards, most current edition. M.O.T. and associated devices shall be checked daily and periodically throughout the project for compliance; and where adjustments or corrections are needed, prompt revisions shall be made.
The Contractor shall submit an M.O.T plan indicating all facets of traffic control for the project area. The MOT plan should be approved in writing by the County prior to commencing any work.
Traffic shall not be allowed on the roadway after placement of the chip seal for a minimum of two hours. During and after placement of the chip seal, pilot cars should escort traffic at a speed of 20 mph (30 kph) over the chip sealed surface for two to 24 hours. For collector roads, pilot cars will be required unless otherwise instructed by Inspection. Once all the loose aggregate is removed from the new chip seal surface, pilot cars are no longer needed.
f. Chip Seal Normal good practices shall be followed for the chip seal construction as outlined in the chip seal specification of this bid package.
Some of the more important construction procedures required are:
i.Calibration of the asphalt emulsion distributor with the use of proper nozzle size and single and spray bar height above the surface.
ii.Immediately after the asphalt emulsion has been applied, it shall be covered with the chips.
iii.Rolling should begin as soon as possible after the cover aggregate has been applied with pneumatic tired units preferred. The rolling should consist of a minimum of 3 coverages. After the initial rolling has been completed with pneumatic tired units, further rolling may be carried out with a 5 to 8 ton steel wheeled unit (optional). To avoid excessive chip crushing, only one complete coverage should be made.
The surface should be clean with the surface broomed prior to the application of any tack coat or microsurfacing to remove excess chips, dirt and other objectionable matter.
g. Microsurfacing Once the chip seal application has been allowed a minimum of two days to settle, the Contractor shall apply a double micro-surface 30-34 lbs/sy in two lift. Normal good practices shall be followed for the chip seal construction as outlined in the microsurfacing specification of this bid package.
Some of the more important or unique construction procedures required are:
i. Each microsurfacing unit to be used should be previously calibrated.
ii. Immediately prior to the placement of the microsurfacing seal, the surface shall be cleaned by power brooming.
iii. Microsurface may be used as rut fill to level dips in the pavement.
iv. Not less than seven days, nor more than four weeks after the chip application, the microsurface shall be applied.
v. The Cape Seal should not be opened to traffic until the microsurface seal has cured sufficiently so as to not exhibit pickup by the tires of regular traffic.
h. Pavement Striping and Markings:
As part of the Maintenance of Traffic, the Contractor shall provide the necessary temporary striping and pavement markings during the different construction phases, and maintained for a minimum of two (2) weeks following the completion of the chip seal operation.
Permanent striping and pavement markings, including the installation of reflective pavement markers shall be performed after the two (2) week period. Prior to applying the permanent striping and markings, the Contractor shall broom the roadway. The Contractor shall be responsible for maintaining the permanent striping and markings for a minimum of two (2) weeks after installation.
i. Deliverables:
Upon completion of the project, the Contractor shall provide Inspection with logs showing the daily and running totals of aggregate and bituminous material during the chip seal stage, as well as the daily production logs for the microsurfacing stage.
These logs shall become backup documentation for invoicing.
j. Warranty:
The Contractor shall provide the County upon final acceptance of the Cape Seal work, a warranty period of three (3) years which shall include all labor, materials, hauling, traffic control and striping to repair the defective areas. Defective areas shall include debonding/delamination, bleeding, excessive raveling and aggregate loss. The Contractor shall perform all warranty work at no cost to the County.
k. General Performance:
Provide completed pavement which performs to the satisfaction of the engineer without bleeding, rutting, shoving, raveling, stripping, or showing other types of pavement distress or unsatisfactory performance.
V. Method of Measurement:
If a pay item is listed on the Bid Form for work required in this provision, the quantity to be paid shall be as specified in the Bid Form including all items of work described herein. Any item necessary for Cape Seal and not specifically listed in another item in the Bid Form, shall be included in this item.
VI. Basis of Payment:
The accepted quantities, determined as provided above for each of the pay items listed below which is included in the contract, will be paid for at the contract unit price per unit of measurement. The Unit price includes all items listed in the contract, including Terms and Conditions and Supplemental Conditions pertaining to Cape Seal, including all items of work described herein. No additional payment will be provided for any item necessary for the completion of this contract as detailed in the specifications, except that at the direction of the County.
- End of Section -
| II. Aggregate for Micro-surface: |
| a. High Performance Micro-surface Emulsion: |
| b. Mineral Filler: |
| c. Water: |
| d. Additives: |
| e. Crack Filler: |
| f. Material Samples: |
| III. Equipment: |
| b. Aggregate Spreader: |
| c. Rollers: |
| e. Mixing Equipment: |
| f. Spreading Equipment: |
| g. Additional equipment: |
| b. Weather and Seasonal limitations: |
| c. Preparation of Surface: |
| d. Resident Notification |
| e. Traffic Control: |
| f. Chip Seal |
| g. Microsurfacing |
| h. Pavement Striping and Markings: |
| i. Deliverables: |
| j. Warranty: |
| k. General Performance: |
| V. Method of Measurement: |
| VI. Basis of Payment: |
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