aggregate spec.pdf
PDF 157 KB Posted
- Attached to
- GAOA Wall RD Aggregate Placement, Nebraska National Forest &Grasslands Federal contract opportunity
- Solicitation number
- 1091391
- Issued by
- Department of Agriculture Forest Service
About this file
This document provides aggregate specifications for a federal contract opportunity for aggregate placement on a road in Nebraska.
The specifications outline requirements for aggregates used in granular bases and surfacing, including sieve analysis percentages for various aggregate types such as subbase gravel, cushion aggregate, and base course gravel. The related federal contract opportunity is for aggregate placement on Wall Road in the Buffalo National Grasslands in Nebraska. The solicitation was issued by the US Department of Agriculture Forest Service. The opportunity details include placement of aggregate on an unspecified road to meet the gradation and quality standards described in the attached aggregate specifications.
View the file
Other files for this federal contract opportunity
| File | Type | Posted |
|---|---|---|
| Amendment No. 2.docx | DOCX document | |
| combined dwgs.pdf | ||
| Amendment No. 1.docx | DOCX document | |
| Wall Aggregate Placement.pdf | ||
| Wage Determination (2).pdf | ||
| description of work.docx | DOCX document | |
| specs.pdf | ||
| spec cover sheet.pdf | ||
| 1240LT23R0016.pdf |
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Text version
PART 2.2
AGGREGATES FOR GRANULAR BASES AND SURFACING
GENERAL REQUIREMENTS
The material shall conform to the specifications for the particular material required by the contract. The material shall be sound durable particles of ledge rock. The material may include limited amounts of fine soil particles, but shall be free of vegetation or organic debris, paper, metal, glass, and other foreign material.
SPECIFIC REQUIREMENTS
Aggregates for granular bases and surfacing shall conform to the requirements of Table 1.
TABLE 1
REQUIREMENT
Subbase
Gravel
Cushion
Aggregate Base
Course
Limestone Ledge Rock
Gravel
Surfacing
Pit
Run
Granular Bridge End
Backfill Base Course
Gravel Cushion
Sieve Percent Passing 6 inch 100
2 inch 100
1 inch 70-100 100 100 100 100 100
3/4 inch 80-100 80-100 80-100 80-100 100 80-100
1/2 inch 68-91 68-91 68-90 68-90 68-91
#4 30-70 46-70 46-70 42-70 42-70 50-78 0-60 38-70
#8 22-62 34-58 34-58 29-53 29-53 37-67 28-58
#40 10-35 13-35 13-35 10-28 10-28 13-35 10-35
#200 0.0-15.0 3.0-12.0 3.0-12.0 3.0-12.0 3.0-12.0 4.0-15.0 0-20.0 0.0-5.0 Other Properties
Liquid Limit (max) 25 25 25 25 25 Plasticity Index 0-6 0-6 0-6 0-3 0-3 4-12 0-6 LA Abrasion Loss (maximum) 50 40 40 40 40 40 40
Crushed Particles (minimum) +#4 Sieve
30% 1-CF
Foot Notes *2 *1 *2 ' *3
*1 The fraction passing the #200 sieve shall not be greater than 2/3 of the fraction passing the #40 sieve. In no case shall the upper limit specified for the #200 sieve be exceeded.
*2 Requirements apply to ledge rock other than limestone ledge rock.
*3 Acceptance of pit run will be by visual inspection. The Engineer may require a sieve analysis to verify the material meets the specified gradation. Independent Assurance will not be required.
Adapted from the 2015 South Dakota DOT Standard Specifications for Roads and Bridges, Section 882.
| PART 2.2 |
| AGGREGATES FOR GRANULAR BASES AND SURFACING |
| SPECIFIC REQUIREMENTS |
| TABLE 1 |
File details come from the government source that posted it. Updated .