286-1 Description.
Construct a base course for paved or graded driveways in accordance with the Plans and Standard Plans, Index 330-001. The Department does not include placing of pavement over driveway base in this Section. The requirements for concrete driveways are included in Section 522.
286-2 Materials.
For driveway base material, use any material meeting the minimum requirements provided in Standard Plans, Index 330-001 and currently specified by the Departmen t for base or surface construction, except do not use hot bituminous mixtures intended for use as open -graded friction course. Proportion bituminous mixtures in accordance with a job -mix formula approved by the Department. In general, the Engineer will ac cept the material bas ed on visual inspection, with no testing required.
286-3 Excavation.
Excavate the area over which driveway construction is to be accomplished to the dimensions shown in the Plans. If the surface of the underlying soil is disturbed dur ing the excavation operation, compact it to the approximate density of the surrounding undisturbed soil. If an existing paved driveway lies within the specified limits for construction, leave the existing base and surface in place, as directed by the Engi neer.
286-4 Spreading, Compacting, and Finishing Base.
Uniformly spread base material over the prepared area to a depth which will, upon completion of compaction and finishing, result in driveway base conforming with the specified lines and elevations. Th en, strike off the base material to a plane paralleling the finished surface, and compact it in a manner similar to that used in the construction of roadway base. The Engineer will not require any specific density. Finish the surface to the specified grad e and cross slope.
286-5 Method of Measurement.
286-5.1 Driveway Base (Optional): The quantity to be paid for will be the plan quantity
area, in square yards .
286-5.2 Driveway Asphalt Base: When specified in the Plans, asphalt base will be paid
for by we ight of mixture, the weight will be measured as specified in 320 -3. Prepare and submit a Certification of Quantities to the Engineer in accordance with 9-2.1.2.
286-6 Basis of Payment.
Price and payment will be full compensation for all work specified i n this Section, including excavating; compacting excavated areas; furnishing material; placing, compacting, and finishing of base; and incidental work. FY 2023-24 Return to Table of Contents No separate payment will be made for any tack coat between base layers, prime coat, cover material for prime coat, bituminous material used in bituminous plant mix, and cement used in soil -cement. Payment will be made under: Item No. 286 - 1- Driveway Base (Optional) - per square yard. Item No. 286 - 2- Driveway Asphalt Base - per ton. FY 2023-24 Return to Table of Contents SECTION 287 ASPHALT TREATED PERMEABLE BASE
287-1 Description.
Construct asphalt treated permeable base (ATPB) and outlet pipe for use under concrete pavement, in accordance with the details shown in the Plans and Standard Plans, Index 446-001. Meet the plant and equipment requirements of Section 320 and the general construction requirements of Section 330, except as noted bel ow.
287-2 Materials.
Meet the following requirements: Coarse Aggregate, Stone, Slag, or Crushed Gravel Grade No. 57 or 67 ................................ ..............Section 901 Superpave PG Asphalt Binder (PG 67 -22) (1) .............. 916-1 Hydrated Lime (2) ..................... AASHTO M -303-89 Type 1 Polyvinyl -Chloride Pipe (3) ................................ .Section 948 Polyethylene Pipe (3) ................................ ...........Section 948 Geosynthetic Material ................................ .........Section 985
1.Use PG 67-22 in the ATPB containing 0.50% heat -stable anti -strip additive (by weight of asphalt) from an approved source. Introduce and mix the anti -strip additive at the terminal.
2.For mixtures containing granite, add hydrated lime at a dosage rate of 1.0% by weight of the total dry aggregate in lieu of adding 0.50% anti -strip additive. Submit certified test results for each shipment of hydrated lime indicating compliance with the specifications. In addition, meet the requirements of 337 -9.2 and 337 -9.3.
3.Use either polyvinyl chloride pipe or polyethylene pipe, unless otherwise specified in the Contract Documents.
287-3 Composition of Mixture.
287-3.1 General: Use ATPB composed of a combination of coarse aggregate and asphalt
cement. Use a mix design verified by the Engineer.
287-3.2 Mix Design: Submit a proposed mix design along with representative samples of
all component materials to the Engineer, at least two weeks before the scheduled start of production. Establish the design asphalt content within the range of 2.0 - 4.0%, by weight of total mixture. During the mix design process, the Engineer may adjust the asphalt content within the 2.0 - 4.0% range. The Engineer may increase or decrease the specified asphalt content during production of the mix after testing and visual inspection. Ensure t hat a minimum of 95% of the aggregate is coated. There will be no separate payment for the bituminous material in the mix. Establish the mix temperature within the range of 230ºF to 250ºF, or as approved by the Engineer.
287-4 Control of Quality.
Provide the necessary control of the ATPB and construction in accordance with the applicable provisions of 320 -2 and 330 -2. FY 2023-24 Return to Table of Contents
Source: Florida Standard Specifications for Road and Bridge Construction, 2024 Edition. Pages 253–254 of 1,299.