Attachment_2_-_Specifications.pdf

Standard Specifications for Construction of Roads and Bridges

TK Jones (Squaw Lake) Parking Lot Improvements FY25

Yuma Field Office

Bureau of Land Management Arizona

Table of Contents

DIVISION 100 GENERAL REQUIREMENTS

Section 103. — SCOPE OF WORK Section 104. — CONTROL OF WORK Section 106. — ACCEPTANCE OF WORK

DIVISION 150 PROJECT REQUIREMENTS

Section 151. — MOBILIZATION Section 152. — CONSTRUCTION SURVEY AND STAKING Section 154. — CONTRACTOR SAMPLING AND TESTING Section 155. — SCHEDULES FOR CONSTRUCTION CONTRACTS Section 156. — PUBLIC TRAFFIC Section 158. — WATERING FOR DUST CONTROL

DIVISION 200 EARTHWORK

Section 204. — EXCAVATION AND EMBANKMENT

DIVISION 300 AGGREGATE AND BASE COURSES

Section 302. — CRUSHED AGGREGATE Section 304. — FULL DEPTH RECLAMATION

DIVISION 400 ASPHALT PAVEMENTS AND SURFACE TREATMENTS

Section 406. — FOG SEAL Section 411. — ASPHALT PRIME COAT Section 414. — ASPHALT PAVEMENT CRACK AND JOINT SEALING AND FILLING

DIVISION 600 INCIDENTAL CONSTRUCTION

Section 634. — PERMANENT PAVEMENT MARKINGS Section 635. — TEMPORARY TRAFFIC CONTROL

DIVISION 700 MATERIAL

Section 702. — ASPHALT MATERIAL AND ADDITIVES Section 718. — TRAFFIC SIGNING AND MARKING MATERIAL Section 725. — MISCELLANEOUS MATERIAL

BLM PROJECT SPECIFICATIONS

SECTION 321126- CRUSHED AGGREGATE BASE COURSE FOR HOT-MIX ASPHALT

SECTION 321216- HOT-MIX ASPHALT

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TK Jones (Squaw Lake) Parking Lot Improvements Legend

New Asphalt Loop

Pavement Markings

100 ft

N

N

Image © 2025 Airbus

Image © 2025 Airbus

Image © 2025 Airbus dpando Line dpando Line dpando Line dpando Text Box Parking Spurs 14'x30' dpando Line dpando Line dpando Text Box Parking Spurs 14'x60' dpando Line dpando Line dpando Line dpando Line dpando Line dpando Callout 20' Wide Loop Throughout dpando Polygonal Line

DIVISION 100

GENERAL REQUIREMENTS

Section 103. — SCOPE OF WORK

103.01 Intent of Contract. The intent of the contract is to provide for the construction and completion of the work described in the contract documents. The precise details of performing the work are not described, except as considered essential for the successful completion of the work. Provide labor, material, equipment, tools, transportation, and supplies necessary to complete the work according to the contract.

103.02 Project Identification. TK Jones (Squaw Lake) Recreation Site-Phase II

103.03 Project location. Project is located approximately twenty-five miles North of Yuma, AZ. TK Jones (Squaw Lake) Recreation Site is located within the Imperial Dam Recreation Area and sits on the Colorado River near Imperial Dam (Lat: 32.902916, Long -114.477136). The site is managed under the Yuma Field Office and receives heavy visitation during October-May from out of state visitors, local recreating public, and waterpower sport enthusiasts accessing the Lower Colorado River. Therefore, work will need to be completed between June 1 - September 30.

103.04 Summary of Work. This project consists of site preparation, asphalt paving, pavement sealing, striping, and curb painting to enhance the designated loop and parking spurs within the recreation site. The primary scope includes:

• Subgrade Preparation & Paving: Excavation, grading, and compaction of subgrade, followed by the placement of approximately 1,723 square yards of 4-inch-thick hot mix asphalt (HMA) with a 2%–5% cross slope to ensure proper drainage and alignment.

• Fog Seal Application: Sealing of the new asphalt pavement to enhance durability and longevity.

• Striping & Roadway Markings: Application of approximately 1,500 linear feet of pavement markings, including parking spaces, camping spots, and roadway elements such as edge lines, centerlines, and stop bars, per industry standards.

• Curb Preparation & Painting: Cleaning, prepping, and repainting approximately 2,530 linear feet of existing curbs in designated colors (red: 1,637 LF, blue: 198 LF, yellow: 695 LF), ensuring coverage on both faces of the curbs. The painting portion of the project shall include:

o Surface Preparation: Ensure curb surfaces are clean, dry, and free from debris, oil, or loose paint.

o Paint Selection: Use traffic-grade paint suitable for outdoor conditions, adhering to local regulations

(e.g., red for no parking zones, yellow for loading zones).

o Application: Apply paint uniformly, considering weather conditions to ensure proper drying and adhesion.

o Safety Measures: Implement appropriate traffic control measures during painting operations to protect workers and the public.

• Site Clearing & Cleaning: Removal of brush, weeds, and debris to prevent contamination of pavement and paint materials.

Contractor Responsibilities

• Coordinate all surveying, staking, compaction testing, and material sampling through an independent third-party testing agency to verify compliance with project specifications.

• Ensure all materials meet project specifications and submit product data for approval before installation.

• Verify all government-provided quantities, as they’re approximate values and may need to be adjusted as to meet field conditions.

All work shall comply with applicable federal, state, and local standards for asphalt paving, striping, and curb painting.

103.05 Period of Performance. Follow the requirements of FAR Clause 52.211-10, Commencement, Prosecution, and Completion of Work. Local conditions (weather conditions, road conditions, etc.) that may affect work are included in the performance period. Contractor shall coordinate work activities with the COR/CO in advance of beginning work. The contractor shall provide 14-day notice prior to start of construction. All other required notifications will be given at least 48 hours in advance of beginning work. Construction shall commence upon the Contractor's verification that specified weather limitations have been met, with an approximate start date of April 1, 2025.

103.06 Project Site Conditions.

A. General: Contractor shall have access to the immediate work area and facilities as needed to complete the work.

B. Work Hours: Contractor shall work normal daylight hours between 7 am to 7 pm. Workdays are Monday through Friday. Weekend and holiday work require CO permission. Any deviation of work hours to accommodate work required may be requested through the CO.

C. Environmental Considerations: The Contractor shall, to the extent feasible, keep the overall worksite clean and clutter free. The Contractor shall clean-up all litter and discarded material generated by the construction process and dispose of it at an approved sanitary landfill or other location and manner approved by the Government.

D. Incidental Operations: Land administered by the Government may be used by the Contractor for incidental operations such as materials storage, project office, and equipment parking.

These areas shall be approved in advance by the Government. Environmental considerations of the preceding paragraphs will apply.

E. Protection of Existing Improvements and Natural features: Contractors shall protect existing, improvements at the site and repair any damage that occurs due to site work at the Contractors expense, this includes the structural improvements and the access roads. Contractor shall also protect the surrounding natural features outside the limits of work.

103.07 Performance of Work. All work shall be conducted in a safe and expedient manner. 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 to agree upon limits of work and methods.

103.08 Equipment. All equipment shall be in good repair, and capable of accomplishing assigned tasks in a safe and acceptable manner. Where applicable, all equipment shall be fitted with approved spark arrestors. All equipment shall be cleaned of earthen and vegetative materials that may contain weed seed prior to delivery onto Public Lands, equipment inspection may be required.

103.09 Equipment and Materials Storage & Staging. The Contracting Officer’s Representative (COR) shall designate areas on the BLM that will be made available for storage of equipment and/or materials during active construction and/or maintenance periods. The Contractor shall be responsible for protection of items stored on

Government property and shall ensure adequate safety measures are maintained at such sites.

103.10 Road Closures. Public will need to be notified through signage of road closures. Contractor to submit traffic control plan showing signage to be used and location of posted signs to maintain safety for the public as well as workers.

Section 104. — CONTROL OF WORK

104.01 Authority of the Contracting Officer. As stated in FAR 1.602-1(a), the CO has authority to execute, administer, or terminate contracts and make related determinations and findings. The CO may delegate authority to representatives to decide on acceptability, progress, and suspension of work, interpretation of the contract, and acceptable fulfillment of the contract.

104.02 Authority of Contracting Officer’s Representative. As stated in FAR 1.602-2(d), CORs will be designated in writing by the CO to act on behalf of the CO to administer the contract. The COR will administer the contract according to the contract documents and the FAR. The COR lacks authority to make commitments outside of the terms of the contract; issue changes that affect price, quality, quantity, delivery, or other terms and conditions of the contract; or direct the Contractor or its subcontractor to operate in conflict with the contract terms and conditions.

104.03 Authority of Inspectors. Inspectors are authorized to inspect work, including the preparation, fabrication, or manufacture of material for the project. Inspectors are not authorized to alter or waive contract requirements, issue instruction contrary to the contract, act as foreperson for the Contractor, or direct the Contractor’s operations. Inspectors have the authority to identify non-conforming work until the issue can be referred to and decided by the CO. An inspector is permitted to stop work in circumstances of imminent and substantial risk of death or injury.

104.04 Electronic Documentation. After award of the contract, provide documents in an approved electronic format.

Provide documents in their native file format (the format produced by the software that the document was created in) upon request.

Provide a resolution quality with color, text, and lines clearly discernible. Submit each document in an individual file. Name files with a unique document name that includes the document date, document description, and project number, or as requested.

Deliver electronic documents to the email address identified at the preconstruction conference or otherwise amended in writing by the CO. Documents delivered on removable media will not be accepted.

Documents delivered after 5:00 p.m. local time will be considered received on the following business day.

Section 106. — ACCEPTANCE 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 AASHTO, ASTM, GSA, and other recognized standard authorities refer to the documents and methods in effect on the date of the Invitation for Bids (IFB) or Request for Proposal (RFP).

Use the FLH Testing Forms for reporting materials test results unless otherwise approved. Use the FLH Test Methods in effect on the date of the IFB or RFP for testing materials, when applicable.

Use ASTM E29, Absolute Method, for test results and related calculations.

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.

If standard manufactured items are specified (such as fence, wire, plates, rolled shapes, and pipe conduits that are identified by gauge, density, or section dimensions) the tolerances for masses or dimensions will be established manufacturing tolerances unless otherwise noted.

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.

Perform process control testing as required. Do not rely on the availability of Government test results for process control.

The Government may inspect, sample, or test any work, at any time before acceptance of the entire work.

If the Government tests work, copies of test reports will be provided to the Contractor upon request.

Government tests may or may not be performed at the work site.

Work will be evaluated for conformance to contract requirements and will be designated as follows:

(a) Conforming work. Acceptable work conforming to the Contract will be paid for at the contract price per unit of measurement. 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 the Acceptance Subsection of each Section, but work may be rejected if it is found not to comply with the contract.

(b) Nonconforming work. Remove, repair, or replace work at no additional cost to the Government that does not conform to the contract or to prevailing industry standards where no specific contract requirements are noted. Provide temporary traffic control and perform other related work to correct nonconformities at no additional cost to the Government.

As an alternative to removal and replacement, the Contractor may submit a written request for approval that includes the following:

(1) Alternatives.

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

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

(2) Supporting rationale and documentation. 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 CO 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. Use prevailing industry standards in the absence of specific contract requirements or tolerances.

Material accepted by visual inspection may be sampled and tested for conformance.

106.03 Certification. For material manufactured off site, use a manufacturer with an ISO 9000 certification or an approved 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.

Other than references in or to the FAR or Federal Law, when the Standard Specifications or Special Contract Requirements reference certifications, certificates, certified documents, equipment, or individuals; the references refer to documentation of non-regulatory, peripheral contract requirements that are required to be validated by an individual or organization having unique knowledge or qualifications to perform such validation.

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 for conformance.

Provide a commercial certification unless a production certification is identified in the Acceptance Subsection.

(a) Commercial certification. A commercial certification is a manufacturer’s or Contractor’s representation that the material complies with the contract. The representation may be labels, catalog data, stamped specification standards, or supplier’s certifications indicating the material is produced to a commercial standard or specification.

Submit one commercial certification for similar material from the same manufacturer.

(b) Production certification. A production certification is a supplier’s certification that the material has been produced to a specific standard and is accompanied by test data performed within the past

12 months and other information as described below to support that the material complies with the contract.

Submit a production certification from the manufacturer for each shipment of material. Include the following:

(1) Date and place of manufacture;

(2) Lot number or other means of cross-referencing to the manufacturer’s inspection and testing system; and

(3) Substantiating evidence that the material conforms to the contract as required by FAR 46.105(a)(4), including the following:

(a) Test results on material from the same lot and documentation of the inspection and testing system;

(b) A statement from the manufacturer that the material complies with the contract; and

(c) Manufacturer’s signature or other means of demonstrating accountability for the certification.

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.

If Government testing is performed on work, the results may be used for acceptance purposes.

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.

Use the computer program, QL-Pay, to determine percent within limits and pay factors. The work will be accepted as follows:

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

The Government’s risk is the probability that work of a rejectable quality level is accepted. The Contractor’s risk is either the probability that work produced at an acceptable quality level (AQL) is rejected (α) or the probability that the work produced at the AQL is accepted at less than the contract unit price.

Acceptable quality level is the lowest percentage of work within the specification limits that is considered acceptable for payment at contract unit price. There are two categories: category I is based on an AQL of 95 percent and category II is based on an AQL of 90 percent.

In both cases, the Contractor’s risk is 5 percent and the risk of rejection is significantly lower.

As an incentive to produce uniform quality work and to offset the Contractor’s risk, a final payment greater than the contract unit price may be obtained under certain conditions.

The quality characteristics to be evaluated, sampling frequency, sampling location, test methods, and category are listed in the Acceptance Subsection of each Section. The following applies:

(1) Lot size. A lot is a discrete quantity of work to which the statistical evaluation procedure is applied. A lot normally represents the total quantity of work produced. More than one lot may occur if changes in the target values, material sources, or JMF are requested in writing and approved.

(2) Sampling frequency. The frequency rate shown normally requires at least 5 samples. The minimum required to perform a statistical evaluation is 3 samples. The maximum obtainable pay factor with 3, 4, or 5 samples is 1.01. At least 8 samples are required to obtain a 1.05 pay factor.

If the sampling frequencies and quantity of work would otherwise result in fewer than 8 samples, submit a written request to increase the sampling frequency to provide for at least 8 samples.

Submit the request to increase the sampling frequency at least 48 hours before starting production.

An increase in the sampling frequency may result in a reduced pay factor.

(3) Sampling location. The exact location of sampling will be determined by the CO based on random numbers.

(4) Specification limits. The specification limits for the quality characteristics are listed in the contract for the work in question.

If Contractor testing and inspection are verified by the Government, the Contractor’s results may be used by the Government to evaluate work for acceptance. Contractor data will be verified using the F-and t-test statistics in comparison to Government test results at a significance level of 0.01. If the Contractor’s data is not verified and the CO determines it to be appropriate, the Government will perform tests associated for that discrete portion of work. In this situation, the Government test results will control in determining the acceptability and pay factor of the work.

(b) Acceptance. The final pay factor for the work in a lot will not be determined until inspections and test results are completed and evaluated.

Before determining the final pay factor, the work may be incorporated in the project provided the current pay factor does not fall below 0.90. If a lot is concluded with fewer than 3 samples, the material will be evaluated under Subsection 106.04.

If the current pay factor of a lot falls below 0.90, stop production. Resume production after effective and acceptable actions to improve quality have occurred.

A lot containing an unsatisfactory percentage of non-specification material (less than 1.00 pay factor) is accepted provided the lowest single pay factor has not fallen into the reject portion shown in Table 106-2.

A lot containing an unsatisfactory percentage of non-specification material with the lowest single pay factor falling into the reject portion shown in Table 106-2 is rejected. Remove rejected material from the work.

If approved, it is permissible to voluntarily remove non-specification material and replace it with new material to avoid or minimize a pay factor of less than 1.00. Sample and test new material according to this Subsection. New material will be evaluated according to this Subsection.

Any quantity of material may be rejected based on visual inspection or test results. Do not incorporate rejected material in the work. The results of tests run on rejected material will be excluded from the lot.

(c) Statistical evaluation. The estimated percentage of work that is within the specification limits for each quality characteristic will be determined as follows:

(1) Calculate the arithmetic mean (𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥) of the test values:

𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥 = ∑𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥 𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛 where: ∑ = summation of:

x = individual test value n = total number of test values

(2) Calculate the standard deviations:

� 𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛∑(𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥2) − (∑𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥)2 𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠 = 𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛(𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛 − 1) where: ∑(x2) = summation of the squares of individual test values

(∑x)2 = summation of the individual test values squared

(3) Calculate the upper quality index (QU):

𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈 − 𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥

QU = 𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠

where: USL = upper specification limit

The USL is equal to the contract specification limit or the target value plus the allowable deviation.

(4) Calculate the lower quality index (QL):

𝑄𝑄𝑄𝑄𝑄𝑄𝑄𝑄𝑄𝑄𝑄𝑄𝑄𝑄𝑄𝑄𝑄𝑄𝑄𝑄𝑄𝑄𝑄𝑄𝑄𝑄𝑄𝑄𝑄𝑄𝑄𝑄𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿 =

𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥 − 𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈𝑈 𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠 where: LSL = lower specification limit

The LSL is equal to the contract specification limit or the target value minus the allowable deviation.

(5) From Table 106-1, determine PU (the estimated percentage of work within the USL). PU corresponds to a given QU. If a USL is not specified, PU is 100.

(6) From Table 106-1, determine PL (the estimated percentage of work within the lot within the LSL). PL corresponds to a given QL. If an LSL is not specified, PL is 100.

(7) Calculate the total estimated percentage of work within the USL and LSL:

PU + PL - 100

(8) Repeat steps 1 through 7 for each quality characteristic listed for statistical evaluation.

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 starting work at the project site. This work also includes obtaining permits, insurance, and bonds.

Measurement

151.02 Measure the Section 151 pay items listed in the bid schedule

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 bid schedule. 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 from the mobilization pay item according to FAR Clause 52.232-5 Payments under Fixed-Price Construction Contracts, after receipt of the evidence of payment.

(b) 50 percent of the pay item amount, less the amount paid under Subsection 151.03(a), will be paid after 5 percent of the original contract amount is earned from pay items (not including mobilization).

The amount paid will not exceed 5 percent of the original contract amount.

(c) 100 percent of the pay item amount, less the amount paid under Subsections 151.03(a) and 151.03(b), will be paid after 10 percent of the original contract amount is earned from pay items (not including mobilization). The amount paid will not exceed 10 percent of the original contract amount.

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

Section 152. — CONSTRUCTION SURVEY AND STAKING

152.01 This work consists of surveying, staking, calculating, and recording data for the control of work.

See FAR Clause 52.236-17 Layout of Work.

Construction Requirements

152.02 Qualifications. Provide technically qualified survey crews experienced in highway construction survey and staking. Provide personnel who can perform in a timely and accurate manner. At least 14 days before starting survey and staking work, submit a résumé for each individual.

Include the following if AMG methods are used:

(a) The name, authority, relevant experience, and qualifications of the person with overall responsibility for the AMG system; and

(b) The names, authority, and relevant experience of personnel directly responsible for operating the AMG equipment.

152.03 Submittals. At the preconstruction conference, submit a price breakdown by individual tasks if construction survey and staking is paid by the lump sum for use in making progress payments.

Submit the following if AMG methods are used:

(a) Technology statement. A written statement that includes:

(1) The manufacturer, model, and software version of the AMG equipment; and

(2) Certification that the final Government-furnished 3D data is compatible with the AMG equipment.

(b) QCP. Describe procedures for checking, mechanical calibration, and maintenance of both survey and construction equipment. Include the frequency and types of checks performed.

152.04 General. Provide a crew supervisor on-site when surveying and staking is in progress. Provide survey instruments and supporting equipment that can achieve the specified tolerances. If approved, construction equipment controlled with a GPS or Robotic Total Station (RTS) machine guidance system may be used in the construction of subgrade, subbase, and base aggregate courses, or other construction operations.

Provide acceptable tools and supplies of the type and quality suitable for highway survey work. Provide stakes and hubs of sufficient length to provide a solid set in the ground with sufficient surface area above ground for necessary legible and durable markings.

Include staking activities in the construction schedule according to Section 155. Include the dates and sequence of each staking activity.

The Government may set initial horizontal and vertical control points for the project. If the Government sets initial horizontal and vertical control points, the Government will provide data for use in establishing control for completion of the work. If the Contractor is tasked with setting initial horizontal and vertical control for the project, provide the contractor-established control network to the Government for verification.

The Government will furnish data relating to horizontal and vertical alignment, theoretical slope stake catch points, and other miscellaneous design data. Reformatting and additional calculations may be required for the convenient use of the Government-furnished data. Provide immediate notification to the CO of apparent errors in the initial staking or in the Government-furnished data.

Record survey and measurement field data in an approved format. Submit as-staked data and corrections made to the Government-furnished survey data. Submit survey and measurement data at least weekly while surveys are being conducted. Field data and supporting documentation become the property of the Government upon completion of the work.

Discuss and coordinate the following with the CO before surveying or staking:

(a) Surveying and staking methods;

(b) Stake marking;

(c) Grade control for courses of material;

(d) Referencing;

(e) Structure control;

(f) Field staking data;

(g) Localization of the GPS systems to the Government-established control points; and

(h) Other procedures and controls necessary for the work.

Do not start work until staking or 3D verification data for the affected work has been approved.

Preserve initial reference and control points. Notify the CO of missing control points or stakes at least 10 days before starting construction. Reestablish initial control points and obtain approval before starting construction.

Acceptance of the construction staking does not relieve the Contractor of responsibility for correcting errors discovered during the work and for bearing additional costs associated with the error.

Maintain legibility of stake markings for the duration of the project or until notified in writing the stakes are no longer needed. Replace stakes as necessary to ensure markings are maintained.

Remove and dispose of flagging, paint, lath, stakes, and other staking material after the project is complete.

Compute and provide calculations supporting pay quantities.

152.05 Survey and Staking Requirements. Perform survey, staking, recording of data, and calculations as necessary to construct the project. Survey and set stakes to the tolerances shown in Table 152-1. Reset stakes and hubs as required and maintain in an acceptable condition for the duration of the project or until notified they can be removed. Notify the CO if errors are discovered.

(a) Control points. Relocate initial horizontal and vertical control points in conflict with construction to areas that will not be disturbed by construction operations. Provide the coordinates, elevations, and supporting documentation for the relocated points before the initial points are disturbed. Set durable monuments for survey control that uniquely identify the points according to Subsection 107.02 and Section 621. Notify the CO at least 10 days before disturbing original monumentation to verify the newly set control.

Provide the GPS localization results or total station check shot data at least 10 days before starting construction layout work. The CO may order the GPS localization calibration and associated 3D model to be broken into two or more zones to maintain the localized relationship between control points and original ground.

(b) Centerline establishment. Establish or reestablish centerline at roadway design cross-section locations and as necessary to construct the work. Reestablish the centerline if construction survey and staking work does not meet the tolerances.

(c) Original ground topographic verification. Use an approved method to verify existing ground survey. In areas where theoretical and actual ground elevations do not meet a tolerance of ±0.5 feet, notify the CO as resurvey may be required. Re-measure 3D data to verify existing ground topography to mapping. Submit 3D data in electronic format.

Re-measure 3D data 10 feet beyond catch points to verify existing ground topography.

(d) Slope and references stakes. Perform the following:

(1) AMG method. After clearing operations are completed, set centerline reference stakes and hubs on both sides of centerline at 100-foot intervals at the clearing limit locations. Where clearing limits are greater than 10 feet vertically, 25 feet horizontally, or both from subgrade hinge point;

provide an additional reference stake and hub as approved. Label each centerline reference stake with station, hub elevation, and offset from centerline.

Construct a 1000-foot-long test section using AMG at an approved location before starting grading operations. Select a test location with superelevation and curve widening transitions if applicable.

Notify the CO 10 days before starting the test section. Demonstrate capability, knowledge, equipment, and experience to achieve work within tolerances. Allow 14 days to evaluate the test section. Do not start full grading operations until the test section is approved.

Visibly delineate or mark the centerline reference stakes and hubs at cross-section locations for use in verifying grade and elevation. Use conventional survey methods at random locations specified by the CO, no more than 500-foot intervals. Submit 3D coordinates of centerline reference stakes and hubs QC checks. If QC checks do not meet the tolerances in Subsection 204.13(c), rework the section until the specified tolerances are achieved and provide additional cross-sections as directed.

(2) Conventional survey methods. Verify and set slope stakes on both sides of centerline at the theoretical catch point. If the theoretical catch point is not within a tolerance of ±0.5 feet, perform original ground topographic verification according to Subsection 152.05(c). Set the slope stake at the actual intersection of the design roadway slope with the natural ground-line. Set reference stakes outside the clearing limits. Include reference points and slope stake information on the reference stakes. At minimum, label each slope stake with grade information to subgrade shoulder, station, hub elevation, and offset from centerline. Include other relevant information on the stakes if requested.

Establish slope stakes in the field as the actual point of intersection of the design roadway slope with the natural ground-line if theoretical catch point information is not available.

(e) Clearing and grubbing limits. Before ground disturbance occurs, set clearing and grubbing limits on both sides of centerline at least every 100 feet. Label each clearing and grubbing limit reference stake with station and offset from centerline.

(f) Grade finishing stakes.

(1) AMG method. Construct a 1000-foot-long test section using AMG at an approved location before starting grading operations. Select a test location with superelevation and curve widening transitions if applicable. Notify the CO 10 days before starting the test section. Demonstrate the capability, knowledge, equipment, and experience to achieve work within tolerances. Allow 14 days to evaluate the test section. Do not start full grading operations until the test section is approved.

Visibly delineate or mark the centerline and shoulder catch point at cross-section locations for use in verifying grade and elevation. Verify the grade elevation and horizontal alignment of roadway grade-finishing operations. Use conventional survey methods at random locations specified by the CO, no more than 500-foot intervals. Submit 3D coordinates of grade finishing QC checks.

(2) Conventional survey methods. Set grade finishing stakes for grade elevations and horizontal alignment, on centerline and on each shoulder at design roadway cross-section locations. Set stakes at the top of subgrade and the top of aggregate course. Reset grade finishing stakes as many times as necessary to construct the subgrade and each aggregate course.

During turnout or pullout construction, set stakes on the centerline, on each normal shoulder, and on the shoulder of the turnout. In parking areas, set stakes at the center and along the edges of the parking area. Set stakes in ditches to be paved.

If the centerline curve radius is less than or equal to 250 feet, use a maximum longitudinal spacing between stakes of 25 feet. If the centerline curve radius is greater than 250 feet, use a maximum longitudinal spacing between stakes of 50 feet. Use a maximum transverse spacing between stakes of 20 feet. Use brushes or guard stakes at each stake.

(g) Culverts. Verify and set culvert locations at the inlet, outlet, and inlet basin points as shown in the plans. Perform the following:

(1) Survey and record the ground profile along the culvert centerline and additional channel profile for an appropriate offset to capture required information in Subsection 152.05(g)(4).

(2) Determine the slope catch points at the inlet and outlet.

(3) Set reference points and record information necessary to determine culvert length and end treatments.

(4) Plot to scale the profile along the culvert centerline. Show the natural ground, flow line, roadway section, culvert, end treatments, and other appurtenances. Show elevations, grade, culvert length, and degree of elbow.

(a) For single skewed culverts, submit a plotted field-design cross-section normal to roadway centerline and at each end section. Plot the offset and elevation of natural ground at the end section and at proposed template break points between centerline and the end section. Ensure the template design embankment slope is not exceeded.

(b) For multiple skewed culverts, submit a plotted field-design cross-section normal to roadway centerline and at the end sections (left and right) nearest to the shoulder. Plot the offset and elevation of natural ground at the end section and at proposed template break points between centerline and the end section. Ensure the template design embankment slope is not exceeded.

(c) Submit the plotted field-design cross-section for approval of final culvert length and alignment. Plot at a clear and readable scale.

(d) Set inlet, outlet, and reference stakes after the field design has been approved. Stake inlet and outlet ditches to ensure the culvert and end treatments (such as drop inlets) are functional.

(e) Adjust slope, reference, and clearing stakes as necessary to provide for culvert inlet treatments in cut slopes. Readjust slope, reference, and clearing stakes as necessary if culvert inlets are moved from their plan locations. Review slope adjustments with the CO and obtain approval.

(h) Bridges. Set adequate permanent horizontal and vertical control and reference points for bridge substructure and superstructure components to last through project construction. Establish and reference the bridge chord, bridge tangent, or control lines as shown in the bridge plans. Also establish and reference the centerline of each pier, bent, and abutment.

(i) Retaining walls, rockeries, special rock embankments, rock buttresses, gabion walls, and reinforced soil slopes. Survey and record profile measurements along the face of the proposed wall, rockery, embankment, buttress, or reinforced soil slope at 5 feet and 10 feet in front of the wall or slope face. Take cross-sections every 25 feet along the length of the wall or reinforced soil slope and at major breaks in terrain within the limits designated by the CO. Measure and record points every 25 feet and at major breaks in terrain for each cross-section. Set reference and control points to perform the work.

(j) Borrow and waste sites. Perform field work necessary for initial layout, baseline, and measurement of the borrow or waste site. Establish site limits and clearing limits. Measure both original and final ground conditions and submit survey data as directed.

(k) Permanent monuments and markers. Perform survey and staking work necessary to establish permanent monuments and markers as described in Section 621 or reestablish monuments as described in Subsection 107.02.

(l) Miscellaneous survey and staking. Survey and stake other work as directed to the proper location and required tolerances. Propose staking increments and tolerances for approval if not shown in Table 152-1.

Table 152-1 Construction Survey and Staking Tolerances(1)

Staking Phase Horizontal, feet (±)

Vertical, feet (±)

Control points set from existing control points 0.03 (2)

0.01 × √𝑁𝑁𝑁𝑁𝑁𝑁𝑁𝑁𝑁𝑁𝑁𝑁𝑁𝑁𝑁𝑁𝑁𝑁𝑁𝑁𝑁𝑁𝑁𝑁𝑁𝑁𝑁𝑁𝑁𝑁𝑁𝑁

Mapping, topography, & cross-section points 0.16 0.16 Centerline points(3) & references 0.06 0.06

Slope stake and slope stake references(4) 0.16 0.16

Culverts, ditches, & minor drainage structures stakes 0.16 0.06

Retaining walls stakes 0.06 0.03 Curb & gutter stakes 0.06 0.03

Bridge substructures stakes 0.03(5) 0.03

Bridge superstructures stakes 0.03(5) 0.03

Clearing & grubbing limit stakes 1.00 –

Roadway subgrade finish stakes(6) 0.16 0.03

Roadway finish grade stakes(6) 0.16 0.03

(1) At statistical 95 percent confidence level. Tolerances are relative to existing Government control points.

(2) N is the number of instrument setups.

(3) Centerline points: point of curve (PC), point of tangent (PT), point on tangent, point on curve (POC).

(4) Take the cross-sections normal to the centerline ±1 degree.

(5) Bridge control is established as a local network and the tolerances are relative to that network.

(6) Includes paved ditches.

152.06 Acceptance. Construction survey and staking will be evaluated under Subsections 106.02 and 106.04.

Survey notes will be evaluated under Subsection 106.02.

Permanent monuments and markers will be evaluated under Section 621.

Measurement

152.07 Measure the Section 152 pay items listed in the bid schedule and the following as applicable:

When measuring grade finishing by the mile, measure one time for the subgrade and one time for each aggregate course.

Section 152

When measuring survey and staking by the hour, do not measure time spent in making preparations, traveling to and from the project site, performing calculations, plotting cross-sections and other data, and processing computer data.

Do not measure re-establishing missing control points or stakes after construction operations have begun.

Payment

152.08 The accepted quantities will be paid at the contract price per unit of measurement for the Section 152 pay items listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section.

Progress payments for lump sum pay items will be prorated based on total work completed under this Section.

Section 154. — CONTRACTOR SAMPLING AND TESTING

154.01 This work consists of obtaining samples, testing, and reporting the required test results. It excludes Contractor process and QC sampling and testing required under Section 153.

Construction Requirements

154.02 General. Sample and test material according to the Sampling, Testing, and Acceptance Requirements tables included at the end of each Section. Provide testers conforming to Subsection 153.02(d). Perform additional sampling and testing as directed if material does not meet requirements.

Provide the CO the opportunity to witness sampling, splitting, and testing of material.

Where process control sampling and testing frequencies are identical to the sampling and testing frequencies for acceptance, the process control samples may be used for acceptance for the applicable work.

154.03 Sampling. Sample and split samples according to AASHTO or other acceptable procedures. For statistical acceptance sampling, the exact location of sampling will be determined by the CO based on random numbers. Perform splits when required and deliver the Government’s portion of the sample or split sample in an acceptable container suitable for shipment. Label samples with the following:

(a) Project number and name;

(b) Pay item number and description;

(c) Source of material;

(d) Sample number;

(e) Date sampled;

(f) Time sampled;

(g) Location sample taken;

(h) Name of person sampling;

(i) Name of person witnessing sampling; and

(j) Type of test required on sample.

154.04 Testing. Conform to Subsection 153.07 for sampling and testing. Demonstration of testing competence may be required.

154.05 Records. If tests are on material being incorporated in the work, report test results within 24 hours unless otherwise specified in the Sampling, Testing, and Acceptance Requirements tables. Report test

Section 154 results on forms containing sample information required by Subsection 154.03. Label interim measurements used to determine the results. Attach worksheets used to determine test values to the test result forms. Payment for work may be delayed or the work stopped until test results are submitted.

154.06 Acceptance. Contractor sampling and testing will be evaluated under Subsections 106.02 and

106.04 based on Government verification testing.

Measurement

154.07 Measure the Section 154 pay items listed in the bid schedule.

Payment

154.08 The accepted quantities will be paid at the contract price per unit of measurement for the Section 154 pay items listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section.

Progress payments for Contractor testing by the lump sum will be paid as follows:

(a) 25 percent of the pay item amount, no more than 0.5 percent of the original contract amount, will be paid after the testing facilities are in place, qualified sampling and testing personnel are identified, and the work being tested has started.

(b) The remaining portion of the pay item amount will be prorated based on total work completed under this Section.

Payment may be retained if Government testing does not validate the Contractor testing or if it is determined that documentation of sampling and testing does not meet requirements.

Section 155. — SCHEDULES FOR CONSTRUCTION CONTRACTS

155.01 This work consists of scheduling, monitoring, and reporting the progress of construction activities.

155.02 Definitions.

(a) Baseline construction schedule. The first approved construction schedule submitted after the preliminary work plan, showing the order to perform the work, and the dates for starting and completing the work. Once approved the baseline construction schedule cannot be changed.

(b) Construction schedule. Designated as either a Bar Chart Method (BCM) or a Critical Path Method (CPM) schedule.

(1) BCM schedule. A BCM schedule includes a progress bar chart, written narrative, and a submittal list.

A progress bar chart is a time-scaled graphic representation of a project displaying the overall sequencing of work. Each activity includes an activity number, description, start and finish date, and duration. BCM schedules list predecessor activities that must be finished before each activity can be started.

(2) CPM schedule. A CPM schedule includes a time-scaled logic diagram, tabular schedule, written narrative, and a submittal list.

The time-scaled logic diagram is a computer-generated diagram showing the sequence in which the Contractor, in coordination with subcontractors, plans to perform the work; the interdependence of all activities and milestones; the work completed through the data date; and the remaining work necessary to complete the project.

(c) Construction schedule update. An update to the previously approved construction schedule that shows the completed work and the remaining work necessary to complete the project and includes progressing of the schedule, changes to the schedule logic, changes to the schedule activities, changes to the activity durations, or any other modification to the schedule of planned work. A construction schedule update may show construction being completed at a date other than the contract completion date.

(d) Critical path. The longest sequence of activities in the CPM schedule that determines the project’s duration. If the duration of any activity on the critical path is changed, the time required to complete the project will change unless a separate CPM schedule adjustment is made.

(e) Preliminary work plan. A narrative and schedule diagram of contract activities for the first 60 days after the NTP.

Constructi…