Attachment 6 - FSSS Section 314.pdf

Section 314

Section 314. — STOCKPILED AGGREGATES

Description

314.01 This work consists of furnishing and placing material in a stockpile for future use by the Government. Pit or quarry development work consists of clearing, grubbing, stripping topsoil, removing overburden, constructing access roads, conducting restoration activities, and performing other incidental work required for pit or quarry development.

Material

314.02 Conform to the following Section:

Gradation

Table 703-3 Gradation Limits for

Surface Course Gradation and Plasticity Index

Sieve Size Percent by Mass Passing

Designated Sieve

(AASHTO T 27 & T 11)

1 inch 100

¾ inch 97 – 100

3/8 inch 65 – 85

No. 4 45 – 64

No. 16 25 – 42

No. 40 16 – 29

No. 200 8 – 18

Plasticity index*

4 to 10

(*) If % Passing No. 200 is 8% to 12% and PI is less than 4, added 2% bentonite by weight.

Construction Requirements

314.03 General. Conform to the gradation and quality requirements specified in the Section identified for the material.

314.04 Stockpile Site. The Government will acquire the permits and rights to stockpile aggregate from sources identified in the contract if the material is stockpiled for future use.

Section 314

Prepare a plan of operation. Do not perform work within a Government-provided source until a plan of operation for the development of the source is accepted. Submit quality control plan a minimum of two weeks for approval before start of work.

Obtain CO approval before preparing sites. Prepare sites as necessary to accommodate the quantity of material to be stockpiled in a manner that prevents contamination of the stockpiles.

Prepare new sites as follows:

(a) Clear and grub according to Section 201;

(b) Grade, shape, and compact the site to a uniform cross-section that drains; and

(c) Place, compact, and maintain a minimum 6-inch layer of crushed aggregate over the stockpile site and access roads for stabilization.

Obtain CO approval before stockpiling aggregates.

314.05 Stockpile. Build aggregate stockpiles in layers not to exceed 36 inches in thickness. Make the side slopes of each layer no flatter than 1V:1.5H. Spread aggregates with trucks or other approved pneumatic-tire equipment. Complete each layer before depositing aggregates on the next layer. Do not allow aggregates from the layer being built to run down over lower layers. Do not drop aggregates from a bucket or spout in one location to form a cone-shaped pile. Do not push aggregates into piles. Make the stockpiles neat and regular in shape.

Use plank runways or other suitable methods to avoid tracking dirt or other foreign matter onto the stockpiled material when operating trucks on stockpiles.

Space stockpiles far enough apart or install partitions to prevent the mixing of aggregate gradations.

Protect stockpiles for future use with an approved cover.

314.06 Acceptance. Preparation of stockpile sites and construction of stockpiles will be evaluated under Subsections 106.02 and 106.04. Submit a minimum of one representative gradation for each day of crushing.

Clearing and grubbing will be evaluated under Section 201.

Measurement

314.07 Measure the Section 314 pay items listed in the bid schedule according to Subsection 109.02.