5-04 Hot Mix Asphalt (HMA)

5-04.3(4)C Pavement Repair

(PUD July 2020)

Section 5-04.3(4)C is supplemented with the following:

For trenches and other drainage and utility work, make sawcuts as follows: Prior to placing pavement, the Contractor shall remove the existing edge a minimum of 1 foot beyond where any sloughing has occurred or as marked by the Engineer under the existing pavement by sawing the existing pavement vertically and in a straight line along the cut lines indicated. The cut shall be a sufficient distance from the area of excavation to remove broken or damaged pavement and to expose voids under the pavement.

Pavement edges on opposite sides of trenches shall be cut parallel to each other unless otherwise directed. Pavement repair and restoration for installation of Structures shall be roughly rectangular or square. Pavement repair and trench restoration shall be in accordance with the utility permit(s) and the following:

Where traffic will pass over backfilled trenches before they are paved, the top of the trench shall be maintained in a condition that will allow normal vehicular movement to safely continue. Access driveways must be provided where needed. Cleanup operations shall follow immediately behind backfilling, and the work site shall be kept in a safe, orderly condition at all times.

After completing the structure or pipe installation, backfilling, and compaction, the Contractor shall place crushed surfacing base course or CDF and HMA Cl. ½ inch PG 64-22 per the Plan details and utility permit(s).

  1. Pavement shall be placed in 2 or more lifts. The compacted depth of each lift shall be no less than 0.15 foot or no greater than 0.30 foot for HMA Cl. ½ inch PG 64 to 22.
  2. A trench width of less than 5 feet may be hand raked.
  3. Widths 5 feet to 8 feet shall be placed with a Layton box or equal, and widths greater than 8 feet that are less than 200 feet in length shall be placed with a Layton box or self-propelled paving machine.
  4. A width greater than 8 feet and over 200 feet in length shall be placed with a self-propelled paving machine.
  5. Compaction requirements: The in-place pavement density shall be at least 92% of theoretical maximum per WSDOT Test Method 705.

Pavement surface smoothness will be measured for acceptance according to Section 504.3(13).

5-04.4 Measurement

(PUD July 2020)

Section 5-04.4 is supplemented with the following:

No separate measurement will be made for supplying and placing asphalt for tack coat, HMA for pre-leveling, joint sealing, and any materials to provide a smooth transition from a paved to unpaved surface.

Sawcuts made for restoration of trenches, drainage items, utilities or other work shall be included in the work involved, and no separate measurement will be made.

Temporary trench restoration will be measured by the square yard

5-04.5 Payment

(PUD October 2020)

Section 5-04.5 is supplemented with the following:

2-Inch Depth Temporary Trench Restoration”, per square yard

Payment for temporary pavement restoration shall be full compensation for all equipment and labor necessary to furnish, place, and compact the asphaltic concrete and crushed surfacing base course materials as specified. Payment shall also include maintenance and removal of temporary trench restoration pavement and crushed surfacing base course to the limits of the proposed permanent pavement restoration subgrade depth. Tack coat will be considered incidental to the cost of this bid item.