2._Specs_Killpecker_Aggregate_Delivery _07142016.pdf

Arapaho and Roosevelt National Forests Killpecker Aggregate and Borrow Specifications 14 July 2016

703 – Aggregate and Borrow

703.05_nat_us_08_14_2009

Delete 703.05 and replace with the following:

703.05 Subbase, Base, Surface Course, and Borrow Fill.

(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

(10) Submit a sample for approval.

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

Do not furnish material that contains asbestos fibers.

14 July 2016

(c) Aggregate Trails (3/8” minus crusher fines). Crusher fine aggregate shall be tan limestone by Pioneer Sand and Gravel from a Northern Colorado supply or approved equal. Gradation of aggregate shall be approved by Forest Service Engineer. A sample of the aggregate shall be submitted for color approval by Forest Service Landscape Architect.

(d) Borrow Fill Material. Material can be general “waste” material for general fill operations. Earthen soil free of weeds, debris and trash.

14 July 2016 Delete Table 703-2 and replace with the following:

T ab le

-2 ar ge t

V al u e

R an ge s fo r

S ub b as e an d B as e

G ra d at io n

P er ce n t b y M as s

P as si n g D es ig n at ed S ie ve

A

A S

H 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 ti on f ro m 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

S u bb

(7

(6

8.

(3

S ie ve 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 u e R an ge s fo r S ur fa ce G ra da ti on

P er ce n t b y M as s

P as si n g 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 ti on 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 ti on f ro m 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

(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

S ie ve S iz e

1/

1/

N o.

N o.

Add Table 703-16:

Table 703-16

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

703.07_nat_us_03_02_2005

Table 703-2 Correction

Include the following substitution

In Table 703-2, delete the “436 – 74 (6)” percent by mass passing for grading E (base) No. 4 sieve size and substitute “36 – 74 (6).”