A.02.16_Exhibits.pdf

EXHIBIT A - Existing Paving

Exhibit B - Areas to be Milled

EXHIBIT C: Acceptable Gradations

References United Facilities Criteria (UFC) 3-250-03 “Standard Practice Manual for Flexible Pavements” and UFGS 02704, “Aggregate and/or graded-crushed aggregate base course” (Supersedes UFGS-02722A)

Source Acceptance Tests

• Sieve Analysis (including 0.02 mm No. 635 size material).

• Liquid limit and plasticity index.

• Moisture-density relationship.

• Wear.

• Soundness.

• Weight per cubic meter foot of Slag.

In-Place Tests • Density tests shall be performed on every lift of material placed and at a frequency of one set of tests for every 250 square meters, or portion thereof, of completed area.

• Sieve Analysis (including 0.02 mm No. 635 size material) shall be performed for every 50 metric tons of material placed.

• Liquid limit and plasticity index tests shall be performed at the same frequency as the sieve analysis.

Weather No construction when near or below freezing.

Coarse Aggregate

Aggregate Base Course (ABC) coarse aggregate shall not show more than 50 percent loss when subjected to the Los Angeles abrasion test in accordance with ASTM C131.

The amount of flat and elongated particles shall not exceed 30 percent. A flat particle is one having a ratio of width to thickness greater than 3; an elongated particle is one having a ratio of length to width greater than 3. In the portion retained on each sieve specified, the crushed aggregates shall contain at least 50 percent by weight of crushed pieces having two or more freshly fractured faces with the area of each face being at least equal to 75 percent of the smallest mid-sectional area of the piece.

When two fractures are contiguous, the angle between planes of the fractures must be at least 30 degrees in order to count as two fractured faces. Crushed gravel shall be manufactured from gravel particles 50 percent of which, by weight, are retained on the maximum size sieve listed in this table.

Fine Aggregate The portion of any component or of the completed course passing the 0.425 mm No.

40 sieve shall be either non-plastic or have a liquid limit not greater than 25 and a plasticity index not greater than 5.

Blending The coarse and fine aggregates shall be mixed in a stationary plant, or in a traveling plant or bucket loader on an approved paved working area. Maximum lift is 150 mm.

Compaction Compaction shall continue until each layer has a degree of compaction that is at least 100 percent of laboratory maximum density through the full depth of the layer.

Thickness Requirements

The total compacted thickness of the base course shall be within 13 mm (1/2 inch) of the thickness indicated. Average job thickness shall be the average of all thickness measurements taken for the job, but shall be within 6 mm 1/4 inch of the thickness indicated. The total thickness of the base course shall be measured at intervals in such a manner as to ensure one measurement for each 500 square meters yards of base course. Measurements shall be made in 75 mm 3 inch diameter test holes penetrating the base course.

Finishing Grade and smoothness requirements. Maintain – limited traffic – no surface rutting.

EXHIBIT D – Accepted Gradations for Aggregate Base Course

EXHIBIT E: Typical Uses of Bituminous Materials

EXHIBIT F: Gradation Specification Limits for Bituminous Construction (Continued)

EXHIBIT G: Bitumen Content for Road-Mix Pavement

EXHIBIT H: Sequence of Operations for a Road-Mix Pavement