TABLE 408.11 Condition of Existing Pavement Application Rate (gal/sy) (Note 2) Undiluted Diluted (1:1) (Note 3) New HMA (Note 4) 0.04 – 0.05 0.08 – 0.10 Oxidized HMA 0.07 – 0.10 0.13 – 0.20 Milled Surface 0.10 – 0.13 0.20 – 0.27 PC Concrete 0.07 – 0.10 0.13 – 0.20 Note 2: Application rates are for slow setting emulsions grades (SS and CSS) that contain approximately 60% asphalt material. Rapid setting emulsion grades may contain slightly higher or lower asphalt contents, but can usually be applied within the same applicati on range. Note 3: Dilution rate only applies to SS and CSS grades. Note 4: Tack coat is normally not needed over a layer of new HMA that has been placed within the last few days, as long as the underlying new layer has not become dirty under traffic or from windblown dust.
408.12 Method of Measurement :
No materials shall be removed from the Project for any purpose until the operation has been completed and the quantities of materials incorporat ed into the operations have been determined, except when authorized by the Engineer. The quantity of “Asphalt Material” for tack coat shall be the number of gallons, prior to dilution, incorporated into the completed work. Any applicable dilution rates, shall be supplied to the Engineer by the Contractor on the material delivery ticket. Dry sand or stone chips used as a blotter course due to excessive use of tack coat shall be considered incidental to the work. When items for maintaining traffic are inc luded in the Contract, they will be measured and paid as provided in Section 636.
408.13 Basis of Payment :
The quantities, determined as provided above, will be paid for at the contract unit prices bid for the items listed below, which prices and payments shall be full compensation for furnishing all the materials and doing all the work prescribed in a workmanlike and acceptable manner, included all labor, tools, equipment, supplies, and incidentals necessary to complete the work.
408.14 Pay Item :
ITEM DESCRIPTION UNIT 408001 -* Non-Tracking Asphalt Material Gallon 408002 -* Asphalt Material Gallon *Sequence number SECTION 409-BLANK 198 SECTION 410 ASPHALT BASE AND WEARING COURSES, PERCENT WITH LIMITS (PWL) 410.1 -DESCRIPTION : 410.1.1 -General: The Contractor shall note that this Section is to be used for Square Yard Paving operations; however, the proposal and / or plans may contain 401 and 402 items to be paid and measured by the Ton (TN). In instanc es where those items occur, they shall be constructed and measured in accordance with the applicable sections of the West Virginia Division of Highways Standard Specifications Roads and Bridges, current edition, and the Supplemental Specifications current when the contract is let. Additionally, the following Materials Procedures (MP’s) for Square Yard Paving can be found on the Materials Control, Soils and Testing (MCS&T) Division website: https://transportation.wv.gov/highways/mcst/Pages/WVDOH -Materials -Procedures.aspx .
a.MP 401.02.31 QC & Acceptance
b.MP 401.07.20 Sampling Loose Asphalt Pavement Mixtures
c.MP 401.07.21 Sampling Compacted Asphalt
d.MP 401.07.22 Thickness of Asphalt Concrete Using Cores
e.MP 401.07.23 Bond Strength
f.MP 401.07.24 Pavement Macrotexture
g.MP 401.07.25 Evaluation of Asphalt Pavements
h.MP 401.13.50 Determination of PWL 410.1.2 -PWL Paving Description: This work shall consist of constructing one or more courses of asphalt, mixed mechanically in a plant, composed of aggregate and asphalt material designed in accordance with either the Marshall or Superpave Design System as specified in the contract documents, on a prepared foundation in accordance with these specifications and in reasonably close conformity with the lines, grades, weights or thicknesses, and cross sections shown on the Plans or established by the Engineer. The unit of measurement for asphalt will be by the ton, square yard, or cubic yard. The work will be accepted in accordance with these Specifications and the applicable requirements of Sections 105, 106, and 109.
Source: West Virginia Standard Specifications for Road and Bridge Construction, 2023 Edition. Pages 213–214 of 1,006.