Crushed_Aggregate_Specifications.pdf

AG-04R4-S-16-0034

The Middle Fork Ranger District is requesting bids for the purchase and delivery of 2,525 tons of “Grading A” crushed aggregate rock to Forest Service Roads 5821, 5824-124 and 5826. Roads 5821, 5824-124, 5826 and all other Forest Service roads used for access are single lane, low standard gravel roads. Aggregate delivery described in this contract is in support of an existing road reconstruction project that will be operating during the execution of this contract. Delays should be expected. Coordination of aggregate delivery dates, times and locations with the COR as well as coordination of reconstruction activities with project equipment operators, laborers and supervisors will be required. The specifications below summarize the requirements of the order.

General

All crushed aggregate shall conform to the specifications listed below in “Material Specifications for “Grading A” Crushed Aggregate”. Submission of a material certification is required prior to delivery of aggregate. Load tickets (in tons) shall be submitted daily. There will be other equipment and construction activities within the project area during the aggregate delivery timeframe. Expect delays and coordinate with the COR and equipment operators to minimize conflicts.

Road 5821

Place aggregate as listed in the tables below. Place lifts to cover the existing road width, including turnouts and curve widening, with approximately a 5” depth of un-compacted aggregate to provide for a processed and compacted aggregate lift depth of approximately 3”. The aggregate lift sections will be processed by a water truck, grader and roller as aggregate is placed. Coordinate with the COR and equipment operators to minimize conflicts and to facilitate the processing of the aggregate. Delays in aggregate delivery should be expected.

Aggregate lift sections

Place aggregate lifts as listed in the table below. Aggregate lift sections must be placed between the dates of 7/18/16 and 7/21/16, 6 AM to 6 PM. Contact the COR to coordinate delivery times and locations.

MP Aggregate Quantity (tons)

Description

0.00 - Reference – “End County Maintenance”. Eastern boundary of Forest Service maintenance on Road 5821.

2.94 - Reference – Railroad crossing.

2.94 – 3.53 800 Place a 5” aggregate lift matching the existing road width as marked by

CO.

3.62 – 4.57 1300 Place a 5” aggregate lift matching the existing road width as marked by

CO.

4.57 - Reference – Railroad crossing.

6.64 - Reference – “Begin County Maintenance”. Western boundary of Forest

Service maintenance on Road 5821.

Aggregate stockpile locations

Stockpile aggregate as marked by CO at the locations listed in the table below. Aggregate stockpiles along Road 5821 must be placed between the dates of 7/22/16 and 7/25/16. Contact the COR to coordinate stockpile delivery times and locations.

MP Aggregate Quantity (tons)

Description

1.86 21 Stockpile aggregate in the location marked by the CO.

3.94 21 Stockpile aggregate in the location marked by the CO.

4.70 21 Stockpile aggregate in the location marked by the CO.

5.70 21 Stockpile aggregate in the location marked by the CO.

5.72 21 Stockpile aggregate in the location marked by the CO.

Road 5824-124

Stockpile 110 tons of “Grading A” crushed aggregate at the location marked by the CO at the quarry site, located at MP 0.32 on Road 5824-124. Placement of this stockpile must take place between the dates of 7/11/16 and 7/17/16. Contact the COR to coordinate stockpile delivery times and locations.

Road 5826

Stockpile 210 tons of “Grading A” crushed aggregate at the location marked by the CO located at MP 2.39 on Road 5826. Placement of this stockpile must take place between the dates of 7/11/16 and 7/17/16. Contact the COR to coordinate stockpile delivery times and locations.

Material Specifications for “Grading A” Crushed Aggregate

Subbase or base aggregate. Furnish hard, durable particles or fragments of crushed stone, crushed slag, or crushed gravel conforming the following:

(1) Gradation Table 703-2

(2) Liquid limit, AASHTO T 89 25 max.

(3) Plastic limit, AASHTO T 90 Nonplastic

(4) Los Angeles abrasion, AASHTO T 96 40% max.

(5) Sodium sulfate soundness loss (5 cycles), 12% max.

AASHTO T 104

(6) Durability index (coarse), AASHTO T 210 35 min.

(7) Durability index (fine), AASHTO T 210 35 min.

(8) Fractured faces, ASTM D 5821 50% min.

(9) Free from organic matter and lumps or balls of clay

Do not use material that breaks up when alternately frozen and thawed or wetted and dried.

Obtain the aggregate gradation by crushing, screening, and blending processes as necessary. Fine aggregate, material passing the No. 4 sieve, shall consist of natural or crushed sand and fine mineral particles.

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Contacts

Primary and technical contact: Mike Larman, office: (541) 782-5203 cell: (503) 250-2354

Alternate contact: Steffan Bolin, office: (541) 782-5342 cell: (541) 912-2695