W9128A-18-B-0002_Am-0013_Specifications.pdf

MCAF FIGHTER ALERT FACILITY, JBPHH, OAHU, HAWAII KNMD 043004

Bolts, Nuts, and Washers

AISC Fabrication Plant Quality Certification

AISC Erector Quality Certification

Welding Procedures and Qualifications

Welding Electrodes and Rods

Recycled content, S

Work must be fabricated in an AISC Certified Fabrication Plant, Category Std . Submit AISC fabrication plant quality certification.

Work must be erected by an AISC Certified Erector, Category CSE. Submit AISC erector quality certification.

1.4 QUALITY ASSURANCE

1.4.1 Preconstruction Submittals

1.4.1.1 Erection Drawings

Submit for record purposes. Indicate the sequence of erection, temporary shoring and bracing. The erection drawings must conform to AISC 303.

Erection drawings must be reviewed, stamped and sealed by a registered professional engineer.

1.4.2 Fabrication Drawing Requirements

Submit fabrication drawings for approval prior to fabrication. Prepare in accordance with AISC 326 and AISC 325. Fabrication drawings must not be reproductions of contract drawings. Include complete information for the fabrication and erection of the structure's components, including the location, type, and size of bolts, welds, member sizes and lengths, connection details, blocks, copes, and cuts. Use AWS A2.4 standard welding symbols. Any deviations from the details shown on the contract drawings must be clearly highlighted on the fabrication drawings. Explain the reasons for any deviations from the contract drawings.

1.4.3 Certifications

1.4.3.1 Welding Procedures and Qualifications

Prior to welding, submit certification for each welder stating the type of welding and positions qualified for, the code and procedure qualified under, date qualified, and the firm and individual certifying the qualification tests. If the qualification date of the welding operator is more than one-year old, the welding operator's qualification certificate must be accompanied by a current certificate by the welder attesting to the fact that he has been engaged in welding since the date of certification, with no break in welding service greater than 6 months.

Conform to all requirements specified in AWS D1.1/D1.1M.

SECTION 05 12 00 Page 6

(Am-0013)

Contractor. The grouting equipment shall be capable of thoroughly mixing and producing a grout free of lumps and undispersed cement, and shall be able to pump the grout in a continuous operation.

3.3.2 Soil Cutting and Fluids

Suitable equipment and approved methods shall be used to contain and treat the soil cuttings and fluids from the drilling and grouting in accordance with City, State and Federal environmental pollution regulations and requirements to prevent environmental impacts to existing structures. The soil cuttings and fluids from the drilling shall be disposed of by the Contractor in accordance with City, State and Federal environmental pollution regulations and requirements.

3.3.3 Permanent Steel Casing

Casing shall have a minimum outside diameter of 7.0 inches, minimum wall thickness of 0.317 inch, and machined flush jointed threads, plain finish.

3.3.4 Sub Title

The central reinforcing steel consists of a single reinforcing bar within each micropile as indicated. A centralizer shall be placed at vertical spacing not exceeding 10 feet and the lowest centralizer shall be located not more than one foot above the bottom of the reinforcing bar.

Reinforcing steel shall only be spliced with mechanical couplers and capable of achieving the full ultimate strength of the bar. Contractor to submit mechanical coupler data to the Contracting Officer for approval.

Install hex nut at bearing plate at lock off load to lock off central bar after load testing

3.3.5 Grouting

The grout in each micropile shall be placed by starting from the deepest point in the drill hole and working upward. It shall be pumped through grout tubes, pipes, or drill rods. The grout pressures and grout takes shall be controlled to reduce the amount of ground heave and excessive grout takes. At that point the casing can be cut and the remainder left in place. Additional post grouting may be performed as determined by the Contractor, to obtain the required load capacity. After completing the grouting, the grout tube or pipe may remain in the hole, but it shall be filled with grout of equal or greater strength than the grout used in the installations.

3.3.6 Grout Quality Control

One set of grout specimens shall be taken daily. Each set shall consist of 6 cubes. Cubes shall be made from brass molds (not plastic molds). Grout specimens shall be cured under laboratory conditions. Cubes shall be tested in accordance with ASTM C109/C109M. Strength tests shall be made for 3 cubes at 7 days and for 3 cubes at 28 days. If the strength tests of one or more cubes of a set from a pile are at 10 percent or more below the required compressive strength required at 28 days, the pile shall be abandoned and replaced by a pile placed adjacent to the abandoned pile as directed by the Contracting Officer at the Contractor's expense. All tests shall be made by an independent testing laboratory approved by the

MCAF FIGHTER ALERT FACILITY, JBPHH, OAHU, HAWAII KNMD 043004

SECTION 31 63 33 Page 8 (Am-0010)

Reinforcing and Centralizer

SECTION 31 63 33 Page 8 of the specification under which it is provided. Provide mill test reports no more than 1 month old, prior to use in the work. Do not use cementitious materials until notice of acceptance has been given.

Cementitious materials may be subjected to testing by the Government from samples obtained at the mill, at transfer points, or at the project site.

If tests prove that a cementitious material that has been delivered is unsatisfactory, promptly remove it from the project site. Retest cementitious material that has not been used within 6 months after testing, and reject if test results do not meet manufacturer requirements.

1.4.5 Testing During Construction

During construction, sample and test aggregates, cementitious materials, and concrete as specified herein. The Government will sample and test concrete and ingredient materials as considered appropriate. Provide facilities and labor as may be necessary for procurement of representative test samples. Testing by the Government does not relieve the specified testing requirements.

1.4.6 Test Section

Up to 10 days, but not more than 60 days, prior to construction of the concrete pavement, construct a test section near the job site, but not as part of the production pavement area. Construct test section of the same depth as the course which it represents. The underlying grade or pavement structure upon which the test section is to be constructed is required to be the same as the remainder of the course represented by the test section. The equipment used in construction of the test section is required to be the same equipment to be used on the remainder of the course represented by the test section. Use the test section to develop and demonstrate the proposed techniques of mixing, hauling, placing, consolidating, finishing, curing, initial saw cutting, start-up procedures, testing methods, plant operations, and the preparation of the construction joints. Perform variations in mixture proportions, other than water, if directed. Operate and calibrate the mixing plant prior to start of placing the test section. Use the same equipment, materials, and construction techniques on the test section proposed for use in all subsequent work.

Perform base course preparation, concrete production, placing, consolidating, curing, construction of joints, and all testing in accordance with applicable provisions of this specification. Three days after completion of the test section, provide eight cores at least 6 inches in diameter by full depth cut from points selected in the test section by the Government. The cores will be evaluated for surface paste, uniformity of aggregate distribution, segregation, voids, and thickness. Construct the test section meeting all specification requirements and being acceptable in all aspects, including surface texture, thickness, grade, and longitudinal and transverse joint alignment. Failure to construct an acceptable test section necessitates construction of additional test sections at no additional cost to the Government. Test sections to be retained until Contracting Officer approves demolition. Do not commence production paving until the results on aggregates and concrete, including evaluation of the cores, and all pavement measurements for edge slump, joint face deformation, actual plan grade, surface smoothness and thickness have been submitted and approved. Pavement accepted as a production lot will be evaluated and paid as specified in PART 1 GENERAL.

1.4.6.1 Pilot Lane

Construct the test section consisting of one paving lane at least 400 feet

SECTION 32 13 11 Page 15 at a location to be directed buy the Contracting Officer, within the project are but not within the production lane. Test section shall consist of one paving lane at least 400 feet long and at least 10 feet wide long and to the same thickness as the thickest portion of pavement shown on the Drawings. Construct at the same lane width as that required for use in the project. Provide at least one transverse construction joint in the test section. If doweled longitudinal construction joints are required in any of the production pavements, install them full length along one side of the test lane throughout the test section. Construct the test section on two separate days.

1.4.6.2 Fill-In Lane

Consider the first 400 feet of the initial production fill-in lane as a fill-in lane test section for purposes of testing and evaluation. All requirements for the test section are applicable. Obtain cores from the fill-in lane side of the longitudinal construction joint with the pilot lane. The cores will be evaluated for homogeneity, consolidation, and segregation.

1.4.7 Acceptability of Work

The materials and the pavement itself will be accepted on the basis of production testing. The Government may make check tests to validate the results of the production testing. If the results of the production testing vary by less than 2.0 percent of the Government's test results, the results of the production testing will be used. If the results of the Government and production tests vary by 2.0 percent, but less than 4.0 percent, the average of the two will be considered the value to be used.

If these vary by 4.0 percent or more, carefully evaluate each sampling and testing procedure and obtain another series of Government and production tests on duplicate samples of material. If these vary by 4.0 percent or more, use the results of the tests made by the Government and the Government will continue check testing of this item on a continuous basis until the two sets of tests agree within less than 4.0 percent on a regular basis. Testing performed by the Government does not relieve the specified testing requirements.

1.4.8 Acceptance Requirements

1.4.8.1 Pavement Lots

A lot is that quantity of construction to be evaluated for acceptance with specification requirements. A lot is equal to one shift of production not to exceed 1000 cubic yards. In order to evaluate thickness, divide each lot into four equal sublots. A sublot is equal to one shift of production not to exceed 250 cubic yards. Grade determinations will be made on the lot as a whole. Surface smoothness determinations will be made on every

0.1 mile segment in each lot. Select sample locations on a random basis in accordance with ASTM D3665. When operational conditions cause a lot to be terminated before the specified four sublots have been completed, use the following procedure to adjust the lot size and number of tests for the lot. Where three sublots have been completed, they constitute a lot.

Where one or two sublots have been completed, incorporate them into the next lot (except for the last lot), and the total number of sublots used and acceptance criteria adjusted accordingly.

1.4.8.2 Evaluation

Provide all sampling and testing required for acceptance and payment adjustment, including batch tickets with all required acceptance testing.

Individuals performing sampling, testing and inspection duties are required

SECTION 32 13 11 Page 16

PART 2 PRODUCTS

2.1 EQUIPMENT

2.1.1 Drill Rod

Select the appropriate drill rod to be used. Submit certified statement that the drill rod has been inspected and is in satisfactory condition for its intended use.

2.1.2 Pipe

Install a 24-inch (nominal) diameter HDPE pipe, with a dimensions ratio of

11 (DR11).

2.2 MATERIALS

2.2.1 Drilling Fluids

Use a high quality bentonite drilling fluid to ensure hole stability, cuttings transport, bit and electronics cooling, and hole lubrication to reduce drag on the drill pipe and the product pipe. Use only fluid with a composition which complies with all Federal, State, and local environmental regulations.

PART 3 EXECUTION

3.1 INSTALLATION

Ensure all utilities are located and clearly marked prior to start of excavation or drilling. Perform a pre-construction survey of all facilities and underground utilities within the work limits.

3.1.1 Drill Set-Up

Design and construct the drill entrance and exit pits.

3.1.1.1 Drilling Fluids

Mix the bentonite drilling fluid with potable water (of proper pH) to ensure no contamination is introduced into the soil during the drilling, reaming, or pipe installation process. Make any required pH adjustments.

3.1.2 Drill Entrance and Exit Pits

Drill entrance and exit pits are required. Maintain at minimum size to allow only the minimum amount of drilling fluid storage prior to transfer to mud recycling or processing system or removal from the site.

Do not allow drilling mud to flow freely on the site or around the entrance or exit pits. Provide secondary containment where drilling near and upstream of waterways. Remove spilled mud and restore ground to original condition..

3.1.3 Drill Entrance and Exit Angle

Ensure entrance and exit angles and elevation profile maintains adequate cover to reduce risk of drilling fluid breakouts and ground exit occurs as specified herein. Ensure that entrance and exit angles generate pullback

SECTION 33 05 23.13 Page 4

1.4 DELIVERY, STORAGE, AND HANDLING