FSSS_-_Specification.pdf

Section 151. — MOBILIZATION

Description

151.01 This work consists of moving personnel, equipment, material, and incidentals to the project and performing all work necessary before beginning work at the project site. Mobilization includes the obtaining of permits, insurance, and bonds.

Measurement

151.02 Measure mobilization according to Subsection 109.02.

Payment

151.03 The accepted quantity, measured as provided in Subsection 109.02, will be paid at the contract price per unit of measurement for the Section 151 pay item shown in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05.

Progress payments for mobilization lump sum will be paid as follows:

(a) Bond premiums will be reimbursed according to FAR Clause 52.232-5 Payments Under Fixed-Price

Construction Contracts, after receipt of the evidence of payment.

(b) When 5 percent of the original contract amount is earned from other bid items, 50 percent of the mobilization item, or 5 percent of the original contract amount, whichever is less, will be paid.

(c) When 10 percent of the original contract amount is earned from other bid items, 100 percent of the mobilization item, or 10 percent of the original contract amount, whichever is less, will be paid.

(d) Any portion of the mobilization item in excess of 10 percent of the original contract amount will be paid after final acceptance.

301 - Untreated Aggregate Courses

301.03 General.

Add the following:

Request approval in writing of the roadbed before placing aggregate.

If the aggregate is produced and stockpiled before placement, handle and stockpiled according to Section 320. Establish stockpile sites at locations approved. Clear and grub stockpile sites according to Section 201.

301.04 Mixing and Spreading.

Delete the first two sentences of the first paragraph and add the following:

Adjust the moisture content to obtain a uniform mixture with a moisture content within 2 percent of the optimum moisture content. Spread the aggregate in a uniform layer, with no segregation of size, and to a loose depth that will provide the required compacted thickness.

When placing aggregate over geotextile, place aggregate in a single lift to the full depth specified.

Route and distribute hauling and leveling equipment over the width and length of each layer.

301.05 Compacting.

Delete the first and third paragraphs and add the following:

Compact the aggregate using one of the following methods as specified:

(a) Compaction Method A. Compact the aggregate by operating spreading and hauling equipment.

(b) Compaction Method C. Compact each layer of aggregate to a density of at least 95 per-cent of the maximum density, as determined by AASHTO T 99, method C or D.

(c) Compaction Method D. Compact each layer of aggregate to a density of at least 95 per-cent of the maximum density, as determined by AASHTO T 180, method C or D.

For all compaction methods, blade the surface of each layer during the compaction operations to remove irregularities and produce a smooth, even surface. When a density requirement is specified, determine the in place density and moisture content according to AASHTO T 310 or other approved test procedures.

301.06 Surface Tolerance.

Add the following:

Thickness and Width requirements:

The maximum variation from the compacted specified thickness is ½ inch. The compacted thickness is not consistently above or below the specified thickness and the average thickness of 4 random measurements for any ½ mile of road segment is within + ¼ inch of the specified thickness.

The maximum variation from the specified width will not exceed +12 inches at any point. The compacted width is not consistently above the specified width and the average of any four random measurements along any ½ mile of road segment is within +4 inches of the specified width.

301.08(b) Plasticity Index.

Add the following to the first sentence: “and under 703.05(c)(1)”.

301.08 Acceptance

Delete the second paragraph and add the following:

Aggregate gradation and surface course plasticity index will be evaluated under Subsection 106.04. Other aggregate quality properties will be evaluated under 106.02 and 106.04.

301.09 Measurement.

Delete the second and third paragraphs and add the following:

Table 301-1 Field Density Requirements.

Table 301-1: Delete laboratory and field density requirements for base, subbase, and surfacing and replace with the following:

Material or

Product

Type of

Acceptance

(Subsection)

Characteristic Category Test Methods

Specifications

Sampling

Frequency

Point of

Sampling

Split

Sample

Reporting

Time

NC ABC Measured and tested conformance

(Subsection

106.04)

Moisture

Density

Method C-1 --- R-1 Marshall “ “ “ Before using in work

Method D --- AASHTO T 180 “ “ “ “

Method D-1 --- R-1 Marshall “ “ “ “

Compaction

Method C, C-1, D, D-1

--- AASHTO T 310

or other approved procedures

1 per 500 t In-place --- Before placing the next layer

Table 301-1: Add the following:

Table 301-1—Acceptance Sampling and Testing Requirements.

Material or

Product

Type of

Acceptance

(Subsection)

Characteristic Category Test Methods

Specifications

Sampling

Frequency

Point of

Sampling

Split

Sample

Reporting

Time

NC ABC Measured and tested conformance

(Subsection

106.04)

Plastic Limit - AASHTO T 90 1 per each

1,000 T

From the windrow or roadbed after processing

Yes 4 Hours

Table 301-1—Acceptance Sampling and Testing Requirements.

Material or

Product

Type of

Acceptance

(Subsection)

Characteristic Category Test Methods

Specifications

Sampling

Frequency

Point of

Sampling

Split

Sample

Reporting

Time

Aggregate

Width

Measured and tested conformance

(Subsection

106.04)

Width - - 4 per each 0.5 mi Roadbed after processing

- 4 Hours

Aggregate

Thickness

Measured and tested conformance

(Subsection

106.04)

Thickness - - 4 per each 0.5 mi Roadbed after processing

- 4 Hours

Additive Measured and tested conformance

(Subsection

106.04)

Amount of

Additive

- 1 per each 1,000

T

From the windrow or roadbed after processing

No 4 Hours

Section 303. — ROAD RECONDITIONING

303.01 This work consists of reconditioning ditches, shoulders, roadbeds, and aggregate surfaces.

Material

303.02 Conform to the following Subsection:

Water 725.01

Construction Requirements

303.03 Ditch Reconditioning. Remove all slide material, sediment, vegetation, and other debris from the existing ditches and culvert inlets and outlets. Reshape ditches and culvert inlets and outlets to achieve positive drainage and a uniform ditch width, depth, and grade. Dispose of waste according to Subsection 204.14.

303.04 Shoulder Reconditioning. Repair soft and unstable areas according to Subsection 204.07. Remove all slide material, vegetation, and other debris from existing shoulders including shoulders of parking areas, turnouts, and other widened areas. Reshape shoulders and dispose of waste according to Subsection 204.14.

303.05 Roadbed Reconditioning. Repair soft and unstable areas according to Subsection 204.07. Remove all organic, deleterious, or oversize material larger than 6 inches from the top 6 inches of subgrade. Dispose of waste according to

Subsection 204.14. Scarify to a 6-inch depth, remove surface irregularities, and shape to provide a uniform surface.

Finish earth surfaces to within 0.05 feet and rock surfaces to within 0.10 feet of the required line, cross-section, and grade.

Compact according to Subsection 204.11.

303.06 Aggregate Surface Reconditioning. Repair soft and unstable areas to the full depth of the aggregate surface and according to Subsection 204.07. Scarify to the depth of the aggregate surface or to a depth of 8 inches, whichever is less, and remove surface irregularities. Reshape, finish, and compact the entire aggregate surface according to Section

308.

303.07 Roadway Reconditioning. Perform all the applicable work described in Subsections 303.03 through 303.06.

303.08 Pulverizing. Scarify the surface to the designated depth and width. Pulverize all material to a size one and one half times the maximum sized aggregate or to 1½ inches, whichever is greater. Mix, spread, compact, and finish the material according to Section 301.

303.09 Acceptance. See Table 303-1 for sampling and testing requirements. Road reconditioning work will be evaluated under Subsections 106.02 and 106.04.

Measurement

303.10 Measure the Section 303 items listed in the bid schedule according to Subsection 109.02 and the following as applicable.

Measure ditch reconditioning and shoulder reconditioning by the station or foot horizontally along the centerline of the roadway for each side of the roadway.

Measure roadbed reconditioning, aggregate surface reconditioning, roadway reconditioning, and pulverizing by the station or by the square yard. Measure the square yard area on a horizontal plane. Do not measure isolated areas less than 20 square yards.

Measure waste under Section 204.

Payment

303.11 The accepted quantities will be paid at the contract price per unit of measurement for the Section 303 pay items listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See Subsection

109.05.

T a b le

-1

S m p li n g a n d

T es ti n g a n d

R eq u ir em e n ts

R e p o r ti g im e

B ef o re u si in w o rk

B ef o re u si w

E d o f sh if t

(1

M in im u m p o in ts p er p ro ct r.

p li t m le

Y es w h en re q u es te d

P in t o f

S a m p li

R ad b ed

P ro ce ss m at er ia l b ef re co rp o ra ti i w

C m p ac at er ia l

S a m p li

F r e q u e n c y er s il ty e f o r ea ch m ix tu re o r ch an g e in m at er ia l p er y st

M e th o d s

S p e c if ic a ti o n s

A A

S H

T O

M

A A

S H

T O

T et h o d D

(1

A A

S H

T O

T th er a p p ro v ro ce d u re s

C a te g ry

C h a ra c te r is ti c

C la ss if ic at io

M is tu re d en si

In -p la ce d en si is tu re c o n te n t

T y p e o f A c ce p ta ce

(S u b se c ti o n

M ea su re d a n d t es fo co n fo rm an ce

(1 .0

M a te ri a l o r

P r o d u c t

E x is ti n g r o ad b

Section 306. — DUST PALLIATIVE

306.01 This work consists of furnishing and applying one or more applications of a dust palliative on a prepared surface.

Material

306.02 Conform to the following Subsections:

Blotter 703.13

Calcium chloride 725.02

Calcium chloride flake 725.02

Emulsified asphalt 702.03

Lignosulfonate 725.20

Magnesium chloride 725.02

Water 725.01

Construction Requirements

306.03 General. Use distributor equipment conforming to Subsection 409.04 except heating capability is not required.

Equip the distributor with a hose and nozzle for areas inaccessible to the distributor and for touch-up work. Do not apply a dust palliative when the weather is foggy or when rain is anticipated within 24 hours of application. Do not apply chloride brines, emulsified asphalt, or lignosulfonate when the ground is frozen.

Protect the surfaces of structures and trees from splatter or marring during application. Use multiple applications at a reduced rate if necessary to prevent runoff. Do not discharge dust palliative into streams.

306.04 Preparation and Application. Prepare the roadbed by blading and shaping to leave 1 to 2 inches of relatively loose material on the surface.

(a) Emulsified asphalt. When a slow setting emulsified asphalt is used, dilute it with water until the emulsion contains 20 to 30 percent residual asphalt. The CO will approve the exact proportion. Thoroughly blend the emulsified asphalt with the added water. Apply according to Subsection 409.08 when the ambient air temperature is 40 F or above.

(b) Lignosulfonate, calcium chloride, or magnesium chloride. Water the loose material so it is visibly moist.

When lignosulfonate is used, dilute it with water until the mixture contains a minimum 48 percent concentration.

When calcium chloride brine is used, provide a minimum 36 percent concentration. When magnesium chloride brine is used, provide a minimum 28 percent concentration. When calcium chloride flake is used, provide flakes with a minimum 77 percent purity.

concentrations at a rate of 0.25 to 0.50 gallons per square yard as approved. Apply the chloride flakes at the rate of 1.0 to 2.0 pounds per square yard as approved.

Process the dust palliative uniformly throughout the layer, moisten as necessary, and compact the surface.

306.05 Maintenance and Opening to Traffic. Do not permit traffic on the treated surface until the dust palliative has penetrated and cured enough to prevent excessive pickup under traffic. If it becomes necessary to permit traffic before that time, apply blotter as necessary.

306.06 Acceptance. Dust palliative material (emulsified asphalt, lignosulfonate, calcium chloride, calcium chloride flake, and magnesium chloride) will be evaluated under Subsection 106.03. Provide a commercial certification that includes the date, identification number (truck or trailer), net mass, and brand name with each shipment. For liquid, non-petroleum dust palliatives also provide the net volume and specific gravity at 60 ºF, percent solids by mass, and pH. For solid dust palliatives also provide the concentration of the product.

Application of dust palliative will be evaluated under Subsections 106.02 and 106.04.

Measurement

306.07 Measure the Section 306 items listed in the bid schedule according to Subsection 109.02.

Payment

306.08 The accepted quantities will be paid at the contract price per unit of measurement for the Section 306 pay items listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See

Subsection 109.05.