A04_Specifications.pdf

Specifications for Construction

Sophie’s Flat Recreation Site

Road Improvement

Bureau of Land Management

Arizona State Office

TABLE OF CONTENTS

DIVISION 100 GENERAL REQUIREMENTS

Section 103. — SCOPE OF WORK Section 106. — ACCEPTANCE OF WORK Section 109. — MEASUREMENT AND PAYMENT

DIVISION 150 PROJECT REQUIREMENTS

Section 151. — MOBILIZATION Section 156. — PUBLIC TRAFFIC

DIVISION 200 EARTHWORK

Section 212. — LINEAR GRADING

DIVISION 700 MATERIAL

Section 703. — AGGREGATE

DIVISION 100 GENERAL REQUIREMENTS

Section 103 – SCOPE OF WORK

103.02 The project includes, but is not limited to, the following work. This project will include road improvements for the Sophie’s Flat campground site. Sophie’s Flat is a parking lot and site road. Marked areas (see google earth image) will need new aggregate placed, parking lot/site roads graded, and achieve 95% compaction with proper slopes to ensure drainage is adequate. Aggregate to be ABC surface base course. Area is approximately 11,000 SY and needs approximately 1250 tons of base course.

Contractor responsible for all permits required for project if any required by county/state.

103.03 Location of Project. Sophie’s Flat Rec Site. Lat/Long: 34.00644 -112.69501

103.04 Performance of the Work. All work shall be conducted in a safe and expedient manner and in conformance with the specifications referenced in the Task Order. When applicable, traffic control shall be in accordance with standards set forth in the most current edition of the Manual on Uniform Traffic Control Devices (MUTCD). All work shall be conducted by personnel fully qualified to perform the tasks assigned and shall be supervised by a designated Contractor’s Representative. A pre-work meeting will be conducted for each task order to agree upon limits of work and methods.

Section 106 – ACCEPTACNE OF WORK

106.01 Conformity with Contract Requirements. Follow the requirements of FAR Clause 52.246-12 Inspection of Construction.

References to standard documents and test methods of American Association of State and Highway Transportation Officials (AASHTO), American Society for Testing and Materials (ASTM), General Services Administration, and other recognized standard authorities refer to the documents and methods in effect on the date of the Request for Quotation (RFQ).

Perform work to the lines, grades, cross-sections, dimensions, and processes or material requirements shown in the contract.

Incorporate manufactured material into the work according to the manufacturer’s recommendations or to these specifications, whichever is stricter.

Plan dimensions and contract specification values are the values to be strived for and complied with as the design values from which deviations are allowed. Perform work and provide material that is uniform in character and reasonably close to the prescribed value or within the specified tolerance range. The purpose of a tolerance range is to accommodate occasional minor variations from the median zone that are unavoidable for practical reasons.

The Government may inspect, sample, or test work before final acceptance of the project. If the Government tests work, copies of test reports are furnished to the Contractor upon request. Government tests may or may not be performed at the work site.

Acceptable work conforming to the contract will be paid for at the contract unit bid price. Four methods of determining conformity and accepting work are described in Subsections 106.02 through 106.05. The primary method of acceptance is specified in each Section of work, but work may be rejected if it is found not to comply with the contract.

Remove and replace work that does not conform to the contract, or to prevailing industry standards where no specific contract requirements are noted, at no cost to the Government.

As an alternative to removal and replacement, the Contractor may submit a written request to:

(a) Have the work accepted at a reduced price; or

(b) Perform corrective measures to bring the work into conformity.

Include supporting rationale and documentation in the request. Include references or data justifying the proposal based on an evaluation of test results, effect on service life, value of material or work, quality, aesthetics, and other tangible engineering basis. The Government will determine disposition of the nonconforming work.

106.02 Visual Inspection. Acceptance is based on visual inspection of the work for compliance with the contract and prevailing industry standards.

106.03 Certification. For material manufactured off-site, use a manufacturer with an ISO 9000 certification or an effective testing and inspection system. Require the manufacturer to clearly mark the material or packaging with a unique product identification or specification standard to which it is produced.

Check certifications before incorporating the material into the work to ensure that the requirements of the contract have been met. Mark the certifications with the following information:

• Project number and name;

• Pay item number and description;

• Contractor’s signature; and

• Date

Material accepted by certification may be sampled and tested. If material is determined not to conform with the contract, the material will be rejected whether in place or not.

106.04 Measured or Tested Conformance. Perform necessary measurements and tests to ensure work complies with the contract.

Use prevailing industry standards in the absence of contract requirements or tolerances. Submit measurements, tests, and supporting data for acceptance.

106.05 Statistical Evaluation of Work and Determination of Pay Factor. Statistical evaluation of work is a method of analyzing inspection or test results to determine conformity with the contract. The work will be accepted as follows:

(a) General. For work evaluated based on statistical evaluation, both the Government and Contractor assume some risk.

(b) Acceptance. The work in the lot will be paid for at a final pay factor when all inspections or test results are completed and evaluated.

106.06 Manufacturing plants may be inspected for compliance with specified manufacturing methods. Material samples may be obtained for laboratory testing for compliance with quality requirements. Allow full entry at all times to the parts of the plant producing the work.

106.07 Partial and Final Acceptance. Maintain the work during construction and until the project is accepted. Repair damage caused by the Contractor before final acceptance of the entire project at no cost to the Government. See FAR Clause 52.236-11 Use and Possession Prior to Completion.

(a) Partial acceptance. When a segment of the project is completed, a final inspection of that segment may be requested. If the segment is complete and in compliance, it may be accepted. If accepted, the Government may relieve the Contractor of further responsibility for maintaining accepted work.

When public traffic is accommodated through construction and begins using sections of roadway as they are completed, continue maintenance of such sections until final acceptance.

(b) Final acceptance. Notify the Government when the entire project is complete to schedule an inspection. If work is determined to be complete, the inspection will constitute the final inspection. The Contractor will be notified in writing of final acceptance as of the date of the final inspection. Final acceptance relieves the Contractor of further responsibility for the maintenance of the project.

If the inspection discloses unsatisfactory work, the government will provide to the Contractor a list of the work that is incomplete or requires correction. Immediately complete or correct the work. Submit notification when the work has been completed as provided above.

DIVISION 150 PROJECT REQUIREMENTS

Section 151 – MOBILIZATION

Description

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

Measurement

151.02 Measure the Section 151 items listed in the Pricing Worksheet (Attachment 4).

Payment

151.03 The accepted quantities will be paid at the contract price per unit of measurement for the Section 151 pay items listed in the Pricing Worksheet. Payment will be full compensation for the work prescribed in this Section.

Progress payments for mobilization by the 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 pay items (not including mobilization), 50 percent of the mobilization pay 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 pay items (not including mobilization), 100 percent of the mobilization pay item, or 10 percent of the original contract amount, whichever is less, will be paid.

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

Section 156 – PUBLIC TRAFFIC

Descriptions

156.01 This work consists of controlling and protecting public traffic adjacent to and within the project. See FAR Clause 52.236-13 Accident Prevention.

156.02 Conform to the MUTCD

Construction requirements

156.03 General. At the pre-bid meeting traffic control requirements will be discussed to determine what Contractor controls will be necessary so the Contractor can assign a cost to this item. At the prework the Contractor and Government will agree on the timing and accepted method.

156.04 Traffic Control Plan. If required in the contract, and as outlined at the prework meeting, the Contractor shall submit a traffic control plan according to the MUTCD, contract traffic control plan, Section 635, and this Section. An alternate traffic control plan may be submitted for approval according to Subsection 104.03. Submit alternate traffic control plans at least 30 days before intended use.

Perform work in a manner that ensures the safety and convenience of the public and protects the residents and property adjacent to the project. Accommodate public traffic on roads adjacent to and within the project until the project is accepted.

156.05 Maintaining Public Access During Work. Maintain access as discussed with the Government at the prework meeting utilizing temporary facilities/controls as outlined in the scope of week for the task order. Maintain any temporary controls in a safe and acceptable condition.

If corrective action is requested and the corrective action is not taken immediately, the condition may be corrected and the cost of the corrective action deducted from monies due the Contractor.

156.06 Maintaining Access During Non-Work Periods. Maintain access and traffic control for public traffic during periods when work is not in progress. Snow removal to provide public access is the responsibility of the maintaining agency.

156.07 Limitations on Construction Operations. When working on roads and/or parking and the access is open to public traffic, restrict operations as follows:

(a) Operate equipment in the direction of traffic, where practical;

(b) For drop-offs of 3 inches or less, provide "Low Shoulder" warning signs. For shoulder drop-offs in excess of 3 inches provide a 1V:3H fillet with "Shoulder Drop-Off" warning signs.

(c) Provide minimum lane widths of 10 feet. Use barricades, drums, or other acceptable devices to delineate traffic lanes through areas where the travel path has been obliterated by construction operations;

(d) Provide uninterrupted two-way communications between flaggers and also between flaggers and pilot cars unless flaggers are able to see each other and communicate. Use communications devices approved by the Government.

156.08 Nighttime Operations. Not allowed unless approved by the Government.

156.09 Acceptance. Public traffic work will be evaluated under Subsection 106.02. Traffic control devices and services will be evaluated under Section 635.

Measurement and Payment

156.10 No payment will be made for this item unless a specific pay item is listed in the Schedule of Items Do not measure controlling and protecting public traffic for payment.

DIVISION 200 EARTHWORK

Section 212 – LINEAR GRADING

Description

212.01 This work consists of constructing roadbeds within the specified alignment and grade tolerances.

Construction Requirements

212.02 Roadway Preparation. Clear the area of vegetation and obstructions according to Sections 201 and 203.

212.03 Roadway Excavation and Embankment. Construct the roadbeds according to the applicable requirements of Section 204, except as modified herein.

Adjust the moisture content of embankment material to a moisture content suitable for compaction. Place embankment material in 12-inch (300-millimeter) layers and compact each layer according to Subsection 204.11(a). Where compacting with rollers is not practical, use approved mechanical or vibratory compaction equipment.

Construct approach connections to existing roads, parking areas, and trails. Construct new approaches.

212.04 Grading Tolerance. Do not encroach on stream channels, impact wetlands, or extend beyond right-of-way or easement limits. Do not make alignment or profile grade adjustments that adversely affect drainage. Construct the roadbed within the following grading tolerances:

(a) Alignment (centerline). Alignment may be shifted a maximum of 10 feet (3 meters) left or right of the planned centerline. Curve radii may be reduced by up to 50 percent. Do not construct curves with radii less than 100 feet (30 meters). Compound curves are permitted.

(b) Profile grade. Profile grade may be shifted a maximum of 5 feet (1.5 meters) up or down from the plan elevation provided the new grade tangent does not vary more than 2 percent from the plan grade tangent.

Connect revised forward and back grade tangents with a uniform vertical curve consistent with the design.

212.05 Acceptance. Linear grading will be evaluated under Subsections 106.02 and 106.04. Clearing and removal of

Measurement

212.06 Measure the Section 212 pay items listed in the Pricing Worksheet (Attachment 4).

Do not measure changes in the clearing and grubbing quantity caused by alignment adjustments under Subsection 212.04.

Payment

212.07 The accepted quantities will be paid at the contract price per unit of measurement for the Section 212 pay items listed in the Pricing Worksheet. Payment will be full compensation for the work prescribed in this Section.

DIVISION 700 MATERIAL

Section 703 -AGGREATE

703.01 Subbase, Base, and Surface Course Aggregate.

(a) Product Data. Submit product data to include sieve analysis and gradation report for approval on surface course material.

(b) General. Furnish hard, durable particles or fragments of crushed stone, crushed slag, or crushed gravel conforming the following:

(1) Los Angeles abrasion, AASHTO T 96 50 percent max.

(2) Soundness of aggregate using sodium sulfate, 12 percent loss max. AASHTO T 104

(5 cycles)

(3) Durability index (coarse), AASHTO T 210 35 min.

(4) Durability index (fine), AASHTO T 210 35 min.

(5) Fractured faces, ASTM D5821 50 percent min.

(6) Without organic matter and lumps or balls of clay.

(c) Subbase or base aggregate. In addition to Subsection 703.05(a), conform to the following:

(1) Gradation Table 703-2

(2) Liquid limit, AASHTO T 89 25 max.

Table 703-2 Target Value Ranges for Subbase and Base Gradation

Sieve Size Percent by Mass Passing Designated Sieve (AASHTO T 27 and T 11) Grading Designation

A (Subbase) B (Subbase) C (Base) D (Base) E (Base) 2½ inch (63 mm) 100(1) 2 inch (50 mm) 97 – 100(1) 100(1) 100(1)

1½ inch (37.5 mm) 97 – 100(1) 1 inch (25 mm) 65 – 79 (6) 80 – 100 (6) 100(1) ¾ inch (19 mm) 64 – 94 (6) 86 – 100 (6) 100(1)

½ inch (12.5 mm) 45 – 59 (7) ⅜ inch (9.5 mm) 40 – 69 (6) 51 – 82 (6) 62 – 90 (6) No. 4 (4.75 mm) 28 – 42 (6) 40 – 60 (8) 31 – 54 (6) 36 – 64 (6) 36 – 74 (6) No. 40 (425 µm) 9 – 17 (4) 12 – 26 (4) 12 – 26 (4) No. 200 (75 µm) 4.0 – 8.0 (3) 4.0 – 12.0 (4) 4.0 – 7.0 (3) 4.0 – 7.0 (3) 4.0 – 7.0 (3)

(1) Statistical procedures do not apply.

( ) The value in the parentheses is the allowable deviation () from the target values.

(d) Surface course aggregate. In addition to Subsection 703.05(a), conform to the following:

(1) Gradation Table 703-3

(2) Liquid limit, AASHTO T 89, Method A 35 max.

(3) Plasticity index, AASHTO T 90 10±3 Do not furnish material that contains asbestos fibers.

Table 703-3 Target Value Ranges for Surface Course Gradations

Sieve Size Percent by Mass Passing Designate Sieve (AASHTO T

27 & AASHTO T 11)

1 inch (25 mm) 100(1)

½ inch (12.5 mm) 70 – 80 (5) No. 4 (4.75 mm) 40 – 50 (7) No. 10 (2.0 mm) 25 – 40 (6) No. 40 (425 µm) 15 – 25 (5) No. 200 (75 µm) 8.0 – 14.0 (4)

i. Statistical procedures do not apply.

( ) The value in the parentheses is the allowable deviation () from the target values.

703.02 Crushed Aggregate. Furnish hard, durable particles or fragments of crushed stone or gravel conforming to the size and quality requirements for crushed aggregate material normally used locally in the construction and maintenance of highways by Federal or State agencies. Furnish crushed aggregate with a maximum size of 1 inch (25 millimeters) as determined by AASHTO T 27 and AASHTO T 11. Furnish crushed aggregate uniformly graded from coarse to fine and free of organic matter, lumps or balls of clay, and other deleterious material.