B-FSSS.pdf
PDF 216 KB Posted
- Attached to
- Medicine Bow Routt-GAOA-FY-21-Surface Aggregate
- Solicitation number
- 1240LP24Q0045
- Issued by
-
Department of Agriculture Forest Service
About this file
This document appears to be an attachment to a federal contract opportunity. It provides detailed technical specifications for subbase, base, and surface course aggregate materials required for a road construction project on the Medicine Bow-Routt National Forests in Wyoming.
The key requirements include gradation, physical property, and performance criteria for the aggregate materials. Specific test methods such as AASHTO and ASTM standards are referenced. The solicitation number is 1240LP24Q0045, and the requirement is for 1,350 tons of surface course aggregate to be delivered on August 29, 2024 to the North Fork Pit in Albany County, Wyoming. The agency is the Department of Agriculture Forest Service. The document outlines the salient characteristics and technical specifications the offered aggregate must meet to be considered for this requirement.
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Text version
ATTACHMENT B
SUPPLEMENTALSPECIFICATIONS
CG M&S Nash Fork Surface Aggregate
Laramie Ranger District
MEDICINE BOW-ROUTT NATIONAL FORESTS
Albany County, Wyoming
Table of Contents Preface
703 - Aggregate
703.05 Subbase, Base, Surface Course, and Screened Aggregate
Preface Preface_wo_04_28_2022
Delete all but the first paragraph and add the following:
The Forest Service, US Department of Agriculture has adopted FP-14 for construction of National Forest System Roads.
703 - Aggregate 703.05_National_3_17_2021
Delete 703.05 and replace with the following:
703.05 Subbase, Base, Surface Course, and Screened Aggregate.
(a) 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.
(b) Surface course aggregate. Furnish hard, durable particles or fragments of crushed stone, crushed slag, or crushed gravel conforming the following:
(1) Gradation Table 703-3
(2) Liquid limit, AASHTO T 89 35 max.
(3) Plastic Index, AASHTO T 90
a) If the percent passing the No. 200 sieve is less than 12% 2 to 9
b) If the percent passing the No. 200 sieve is greater than 12% Less than 2
(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 75% min.
(9) Free from organic matter and lumps or balls of clay
Do not furnish material that contains asbestos fibers.
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.
(c) Screened aggregate � Furnish hard, durable particles or fragments of stone, slag, or gravel conforming the following:
(1) Gradation Table 703-13
(2) Plastic Index, AASHTO T 90 Less than 9
(3) Los Angeles abrasion, AASHTO T 96 55% max.
(4) Free from organic matter and lumps or balls of clay.
Obtain the aggregate gradation by crushing, screening, and blending processes as necessary.
Delete Table 703 2 and replace with the following:
T ab le
-2 ar ge t V al ue
R an ge s fo r
Su b ba se a nd
B as e G ra d at io n
P er ce n t by
M as s P as si ng D es ig n at ed S ie ve
A
A
SH
T O
T an d T
1)
G ra d in g D es ig na ti on
E
B as e)
(6
(6
(4
4.
7.
(3
T he v al ue in th e pa re nt he se s is th e al lo w ab le d ev ia tio n fr om th e ta rg et v al ue s.
D
B
6)
(6
(6
(4
4.
7.
(3
C
B
6)
(6
(6
4.
�7 .0
3)
B
S ub ba se
(8
.0
4)
A
Su bb
(7
(6
8.
(3
Si ev e S iz e
2½ in ch
1½
3/
1/
N o.
N o.
Delete Table 703-3 and replace with the following:
ab le
-3 ar ge t V al ue
R an ge s fo r
S ur fa ce
G ra da
P er ce n t by
M as s P as si ng D es ig n at ed S ie ve
A
A S
H T
O T an d
T
1) ra d in g D es ig na
U
(6
(7
(5
8.
.0
T he v al ue in th e pa re nt he se s is th e al lo w ab le d ev ia tio n fr om th e ta rg et v al ue s.
I f th e pl as ti ci ty in de x (P
I) is g re at er th an
, t he T
V r an ge f or th e
N o.
s ie ve s iz e is
-1
(4
(7
(5
8.
.0
S 10
(6
(7
(5
8.
.0
H
(6
(6
(5
9.
.0
(6
(6
(5
.0
6.
(4
F
-1
-8
-6
(6
-5
-3
(6
-2
(5
.0
-1 6.
(4
Si ev e S iz e
1/
1/
N o.
N o.
Add Table 703-13:
Table 703-13 Gradation Requirements for Screened Aggregate
Sieve Size
Percent by Mass Passing Designated Sieve (AASHTO T 27 and T 11)
Grading Designation
L M N O P Q R
6 inch 100 100
4 inch 100 100
3 inch 100 100
2 inch 100
No. 4 15 45 15 45 15 45
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