SOW RDU ATCT Parking Lots.pdf

Drawings and Specifications for

Improvements to the Asphalt Parking Lots at the Air Traffic Control Tower Serving the Raleigh Durham International Airport in

Raleigh, North Carolina

January 2024

Prepared By: Ashburn, VA TSC

Table of Contents

TAB 1 Project Summary

TAB 2 Pictures Picture 1 Air Traffic Control Tower Picture 2 Typical Pavement Condition Picture 3 Failing CG and Pavement at West Side Picture 4 Inside of Main Gates, Mounded Section Picture 5 Storage Shed

TAB 3 Drawings

TSC-24-180-001 COVER SHEET AND SITE INFO

TSC-24-180-002 SITE PLAN-EXISTING CONDITIONS

TSC-24-180-003 SITE PLAN – NEW WORK

TSC-24-180-004 PHASING PLAN

TSC-23-180-005 MISCELLANEOUS DETAILS

TAB 4 Specifications Section 01100 General Conditions Section 03 30 33 Cast in Place Concrete Section 03 12 00 Earth Moving Section 32 12 16 Asphalt Paving Section 32 17 23 Pavement Marking

TAB 1

Project Summary

RDU ATCT Parking Lot Improvements January 2024

Project Summary Page 1

Project Summary

A. Project Identification:

Parking Lot Improvements FAA ATCT – Raleigh Durham International Airport

1000 Sawyer Circle Morrisville, NC 27560

B. Project Requirements:

1.) Location of site utilities.

2.) Repair/replacement of 15” diameter reinforced concrete storm drain pipe.

3.) Replacement of concrete curb and gutter.

4.) Replacement of 4” thick reinforced concrete sidewalk.

5.) Removal of asphalt pavement.

6.) Removal and temporary storage of aggregate base material.

7.) Excavation and hauling of subgrade material.

8.) Subgrade preparation.

9.) Installation of geogrid in one location.

10.) Installation of 10” aggregate base course.

11.) Installation of 3” asphalt binder course.

12.) Installation of 2” asphalt wearing course.

13.) Installation of concrete pad for dumpster.

14.) Installation of concrete motorcycle pad.

15.) New striping and signage to match existing.

TAB 2

Pictures

RDU ATCT

RDU ATCT - TYPICAL PAVEMENT CONDITIONS

RDU ATCT- FAILING CG and PAVEMENT, WEST

SIDE

John McCormick Cross-Out

RDU ATCT - INSIDE OF MAIN ENTRANCE

RDU ATCT - STORAGE SHED

TAB 3

Drawings

TAB 4

Specifications

General Conditions 01100-1

SECTION 01100 – GENERAL CONDITIONS

PART 1 - SCHEDULE

A.1 PROJECT SUMMARY

A. Location:

FAA ATCT – Raleigh Durham International Airport 1000 Sawyer Circle

Morrisville, NC 27560

B. Scope of Work:

1.) Location of site utilities.

2.) Repair/replacement of 15” diameter reinforced concrete storm drain pipe.

3.) Replacement of concrete curb and gutter.

4.) Replacement of 4” thick reinforced concrete sidewalk.

5.) Removal of asphalt pavement.

6.) Removal and temporary storage of aggregate base material.

7.) Excavation and hauling of subgrade material.

8.) Subgrade preparation.

9.) Installation of geogrid in one location.

10.) Installation of 10” aggregate base course.

11.) Installation of 3” asphalt binder course.

12.) Installation of 2” asphalt wearing course.

13.) Installation of concrete pad for dumpster.

14.) Installation of concrete motorcycle pad.

15.) New striping and signage to match existing.

1.2 WORK SCHEDULE

A. Work shall be completed within 120 days of Notice to Proceed. Acceptable hours of work are M-F, 7am –7pm. Work outside these time shall be coordinated in advance.

PART 2 – PROJECT COORDINATION

2.1 PROJECT COORDINATION

A. The Contractor is made aware that this facility is responsible for the control and navigation of air traffic. The unscheduled loss or shut down of air traffic control equipment or associated support equipment for any amount of time will jeopardize safety of the flying public. Contractor shall closely coordinate all work activities with the FAA site POC as to not impact the operation the Air Traffic Control Tower.

B. The contractor is advised that ongoing maintenance activities will continue at this facility and that full cooperation is required with maintenance personnel in order to assure continued operation of equipment.

General Conditions 01100-2

C. The contractor shall not operate existing electronic, electrical or mechanical equipment at this facility.

D. This project shall be completed in phases.

2.2 ACCESS

A. Contractor personnel will be assigned an FAA point of contact/escort and be continually escorted throughout the project.

2.3 TECHNICAL GUIDANCE/REQUESTS FOR INFORMATION

A. Contractor shall submit, in writing, any requests for technical guidance or requests for changes due to differing field conditions, improved means or methods, material substitutions, or any other reason. Requests shall be submitted to the Contracting Officer.

PART 3 - EXECUTION

3.1 FIELD MEASUREMENTS

A. Contractor is responsible for making complete field measurements. Check all dimensions at the job site for components requiring fit to existing conditions. Check shop drawings and indicate the actual dimension available at all locations.

3.2 SUBMITTALS

A. The contractor shall submit of list of proposed submittals and shop drawings for approval. This list will be known as the Submittal Register.

B. Contractor shall make a submittal and/or shop drawing for each type of material and system list on the Submittal Register. Submittal shall include four (4) copies of cut sheet(s) and/or shop drawings where required. One (1) copy will be returned to contractor with disposition and comments within 21 days of receipt. Action on the shop drawing or submittal shall be one of the following:

a. Approved

b. Approved as Noted

c. Approved as Noted, Resubmission Required

d. Disapproved

If the submittal or shop drawing is returned as Approved as Noted, Resubmission Required the contractor may or may not be able to proceed with procurement of the component as it will depend on the disposition of the required resubmission. Disapproved submittals or shop drawings will require complete rectification of the issue prior to procurement.

General Conditions 01100-3

3.3 PROJECT SAFETY AND HEALTH PROGRAM REQUIREMENTS

A. All on-site work under this Contract shall be performed in compliance with the requirements of all Federal and State Occupational Safety and Health laws and regulations as they apply to construction site activity.

1. Comply with applicable Occupational Safety and Health Standard (29 CFR 1910 and 1926) promulgated pursuant to authority of the Occupational Safety and Health Act of 1970.

2. Comply with any other applicable Federal, State, or local regulations governing workplace safety to the extent that they do not conflict with other clauses of this contract. If a conflict exists between sections of this Contract, the more stringent requirement takes precedence.

3. Take all other proper precautions to protect the safety and health of the contractor’s employees, Federal Aviation Administration employees, and the public. Provide and maintain barricades, guard rails, covered walkways, lighting devices and other protective devices necessary to warn and protect the workmen and general public from hazards at the construction site.

4. Contractor shall maintain a Project Safety and Health Plan which shall address site-specific safety and health requirements and procedures to include, but not limited to excavations, fall protection, electrical safety, scaffold safety, cranes, steel erection, welding, burning and cutting safety, concrete and masonry work.

5. In addition to compliance with applicable statutory and regulatory requirements, the Project Safety and Health Plan shall contain provisions for mandatory safety orientation for every contractor, subcontractor, and vendor employee assigned or sent to the site. Safety orientation shall cover as a minimum the rules and regulations governing on-site construction activities, special known hazards, accident prevention, emergency procedures, and personal protection equipment requirements.

6. As work progresses, the Plan shall be updated to adapt to new situations and new conditions.

Changes to the Project Safety and Health Plan shall be made only with full concurrence of the Contracting Officer.

7. If any unforeseen hazard should become evident during the performance of the work, bring such information to the attention of the Contracting Officer, verbally and in writing. Take the necessary action to re-establish and maintain safe working conditions.

8. The Project Safety and Health Plan shall include MSD sheets for materials and products to be used on the project. MSD sheets shall be maintained at the project site where all employees will have access.

B. The Project Superintendent shall act as Safety Director and be responsible for the implementation, execution and oversight of the Project Safety and Health Plan. The Superintendent shall have authority from the contractor to stop work to abate hazardous conditions or unsafe practices, and to eject any contractor, subcontractor, or vendor employee from the project site for failure to comply with safety requirements. The Project Superintendent’s authority, responsibilities, and duties in the capacity of Safety Director shall be incorporated as part of the written Project Safety and Health Plan. These responsibilities shall include, but not be limited to conducting subcontractor pre-construction safety program reviews, conducting the employee safety orientation training, conducting weekly safety meetings, conducting daily site safety inspections, auditing subcontractor safety compliance, conducting accident investigations, and preparing required periodic and special safety reports.

C. When the Contractor is notified by the Contracting Officer of non-compliance with the safety or health provisions of this contract, the contractor shall immediately, unless otherwise instructed, correct the unsafe or unhealthy condition. If the Contractor fails to comply promptly, all or part of the Work will be stopped by notice from the Contracting Officer. There will not be any allowance for time or compensation due to work stoppage for an unsafe condition.

General Conditions 01100-4

D. The contractor will maintain an accurate record of exposure data and all accidents incidental to work performed under this Contract. The contractor must report the exposure data and accidents to the Contracting Officer.

E. All subcontracts and vendor purchase orders related to this project shall contain provisions requiring compliance with the contractor’s approved Project Safety and Health Plan.

F. Prior to commencing construction, representatives of the Contractor, including the Project

Superintendent, shall hold a Safety Meeting with designated representatives of the Contracting Officer for the purpose of reviewing the approved Project Safety and Health Plan and discussing the implementation of the plan.

G. The Contractor shall take all necessary precautions to prevent injury to the public, occupants, or damage to property of others. The public and occupants include all persons not employed by the Contractor or a subcontractor.

H. Wherever practical, the work area shall be fenced, barricaded or otherwise blocked off from public or occupants to prevent unauthorized entry into the work area.

1. Provide traffic barricades and traffic control signage where construction activities occur in vehicular areas.

2. Corridors, aisles, stairways, doors and exits shall not be obstructed or used in a manner to encroach upon routes of ingress or egress utilized by the public or occupants, or to present an unsafe or unhealthy condition to the public or occupants.

3. Store, position and use equipment, tools, materials, scraps and trash in a manner that does not present a hazard to the public or occupants by accidental shifting, ignition or other hazardous activity.

4. Store and transport refuse and debris in a manner to prevent unsafe and unhealthy conditions for the public and occupants. Cover refuse containers, and remove refuse on a frequent regular basis acceptable. Use tarpaulins or other means to prevent loose transported materials from dropping from trucks.

3.4 TEMPORARY FACILITIES

A. The Contractor shall provide and maintain all required temporary facilities and equipment required to complete the project to include, but not limited to, scaffolding, lighting, staging, storage, physical protection barriers and temporary ventilation.

B. The contractor make provisions to protect the work and all areas/equipment surrounding the work area. Barriers for soldering and shall be of fire resistant construction and shall protect all adjacent areas. A dedicated Fire Watch is required during all welding or torching operations. A fire watch is defined as a competent person whose sole responsibility is to monitor the welding operation and assure that the sparks and fumes generated by welding do not pose a risk to life or property.

See section 3.5 for fire extinguisher requirements.

C. The contractor shall be permitted to use facility utility power only after close coordination with the FAA POC on location of connection points.

D. The contractor is advised that running water and sanitary facilities are not available at this facility.

General Conditions 01100-5

3.5 FIRE PROTECTION

A. At the pre-construction meeting, the contractor will be shown the locations of fire extinguishers and informed about fire and emergency procedures applicable to the facility during the pre-construction meeting.

B. Contractor shall provide at least one fire extinguisher for welders and plumbers or other trades using open flames in the execution of their work. Maintain “Fire Watch” personnel, with fire extinguisher in hand, during all welding/cutting/soldering or other open flame operations.

3.6 ENVIRONMENTAL PROTECTION AND POLLUTION CONTROL

A. The contractor shall perform all work necessary to prevent environmental pollution during or as a result of construction performed under this contract.

3.7 MATERIALS AND EQUIPMENT

A. Ordering of Materials: Orders for materials and equipment shall be made promptly after approval of submittal in order to avoid any delay to project schedule.

B. Transportation and Delivery: Arrange for delivery to avoid impact to project schedule and to avoid impact to the operation of the existing facility. Deliver materials and equipment in their original, unopened containers bearing the manufacturers label.

C. Storage: Store materials and equipment to provide protection from damage from damage, dust and moisture. Store all flammable or volatile materials properly off site.

D. Arrange storage in a manner to provide easy access for inspection.

E. Manufacture and Fabrication: Design, fabricate and assemble materials and equipment using the best engineering and shop practices. Manufacture all like parts of duplicate units to standard sizes and gages, to be interchangeable. Two or more items of the same kind shall be identical.

F. Equipment and member capacities, sizes and dimensions shown or specified shall be adhered to unless variations are approved in writing.

G. Manufacturer’s Instructions: When contract documents require that the installation of the work shall comply with the manufacturer’s printed instructions, obtain and distribute copies of such instructions to those involved in the installation, including (2) copies to the Contracting Officer.

Maintain one set of instructions at the job site. Strict adherence to the manufacturer’s instructions is required. When project conditions or unique circumstances require deviation from the printed instructions, consult with the Contracting Officer for further guidance. Do not proceed until clear direction has been obtained.

3.8 INITIAL MAINTENANCE

A. Maintain new systems until the project is turned over to the FAA.

General Conditions 01100-6

3.9 CLEANUP AND RESTORATION

A. Contractor is responsible for maintaining the worksite in a clean and safe condition during the work shift as well as after work hours. The contractor shall restore the site to the original condition upon completion of the project.

END OF SECTION 01100

CAST-IN-PLACE CONCRETE 033000 - 1

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Cast-in-place concrete, including concrete materials, mixture design, placement procedures, and finishes.

B. Related Requirements:

1. Section 312000 "Earth Moving" for drainage fill under slabs-on-ground.

1.2 DEFINITIONS

A. Cementitious Materials: Portland cement alone or in combination with one or more of the following: blended hydraulic cement, fly ash, slag cement, and other pozzolans materials subject to compliance with requirements.

B. Water/Cement Ratio (w/cm): The ratio by weight of water to cementitious materials.

1.3 PREINSTALLATION MEETINGS

A. Preinstallation Meeting: Conduct meeting prior to commencement of work.

1.4 ACTION SUBMITTALS

A. Product Data: For each of the following.

1. Portland cement.

2. Fly ash.

3. Slag cement.

4. Blended hydraulic cement.

5. Aggregates.

6. Admixtures:

a. Include limitations of use, including restrictions on cementitious materials, supplementary cementitious materials, air entrainment, aggregates, temperature at time of concrete placement, relative humidity at time of concrete placement, curing conditions, and use of other admixtures.

7. Vapor retarders.

8. Liquid floor treatments.

9. Curing materials.

10. Joint fillers.

B. Design Mixtures: For each concrete mixture, include the following:

CAST-IN-PLACE CONCRETE 033000 - 2

1. Mixture identification.

2. Minimum 28-day compressive strength.

3. Durability exposure class.

4. Maximum w/cm.

5. Calculated equilibrium unit weight, for lightweight concrete.

6. Slump limit.

7. Air content.

8. Nominal maximum aggregate size.

9. Indicate amounts of mixing water to be withheld for later addition at Project site if permitted.

10. Intended placement method.

11. Submit alternate design mixtures when characteristics of materials, Project conditions, weather, test results, or other circumstances warrant adjustments.

1.5 INFORMATIONAL SUBMITTALS

A. Minutes of preinstallation conference.

1.6 QUALITY ASSURANCE

A. Ready-Mixed Concrete Manufacturer Qualifications: A firm experienced in manufacturing ready-mixed concrete products and that complies with ASTM C94/C94M requirements for production facilities and equipment.

1. Manufacturer certified in accordance with NRMCA's "Certification of Ready Mixed Concrete Production Facilities."

1.7 PRECONSTRUCTION TESTING

A. Preconstruction Testing Service: Engage a qualified testing agency to perform preconstruction testing on each concrete mixture.

1. Include the following information in each test report:

a. Admixture dosage rates.

b. Slump.

c. Air content.

d. Seven-day compressive strength.

e. 28-day compressive strength.

1.8 DELIVERY, STORAGE, AND HANDLING

A. Comply with ASTM C94/C94M and ACI 301.

1.9 FIELD CONDITIONS

A. Cold-Weather Placement: Comply with ACI 301 and ACI 306.1.

CAST-IN-PLACE CONCRETE 033000 - 3

B. Hot-Weather Placement: Comply with ACI 301 and ACI 305.1.

PART 2 - PRODUCTS

2.1 CONCRETE, GENERAL

A. ACI Publications: Comply with ACI 301.

2.2 CONCRETE MATERIALS

A. Cementitious Materials:

1. Portland Cement: ASTM C150/C150M, Type I, gray.

2. Fly Ash: ASTM C618, Class C or F.

3. Slag Cement: ASTM C989/C989M, Grade 100 or 120.

B. Normal-Weight Aggregates: ASTM C33/C33M. Provide aggregates from a single source.

1. Maximum Coarse-Aggregate Size: 1 inch nominal.

2. Fine Aggregate: Free of materials with deleterious reactivity to alkali in cement.

C. Lightweight Aggregate: ASTM C330/C330M, 1/2-inch nominal maximum aggregate size.

D. Air-Entraining Admixture: ASTM C260/C260M.

E. Chemical Admixtures: Certified by manufacturer to be compatible with other admixtures that do not contribute water-soluble chloride ions exceeding those permitted in hardened concrete.

Do not use calcium chloride or admixtures containing calcium chloride in steel-reinforced concrete.

1. Water-Reducing Admixture: ASTM C494/C494M, Type A.

2. Retarding Admixture: ASTM C494/C494M, Type B.

3. Water-Reducing and -Retarding Admixture: ASTM C494/C494M, Type D.

4. High-Range, Water-Reducing Admixture: ASTM C494/C494M, Type F.

5. High-Range, Water-Reducing and -Retarding Admixture: ASTM C494/C494M, Type G.

6. Plasticizing and Retarding Admixture: ASTM C1017/C1017M, Type II.

F. Water and Water Used to Make Ice: ASTM C94/C94M, potable.

2.3 VAPOR RETARDERS

A. Sheet Vapor Retarder, Class A: ASTM E1745, Class A.

2.4 CURING MATERIALS

A. Absorptive Cover: AASHTO M 182, Class 2, burlap cloth made from jute or kenaf, weighing approximately 9 oz./sq. yd. when dry.

CAST-IN-PLACE CONCRETE 033000 - 4

B. Moisture-Retaining Cover: ASTM C171, polyethylene film burlap-polyethylene sheet.

1. Color:

a. Ambient Temperature Below 50 deg F .Black.

b. Ambient Temperature between 50 deg F and 85 deg F Any color.

c. Ambient Temperature Above 85 deg F White.

C. Curing Paper: 8-feet- wide paper, consisting of two layers of fibered kraft paper laminated with double coating of asphalt.

D. Water: Potable or complying with ASTM C1602/C1602M.

E. Clear, Waterborne, Membrane-Forming, Dissipating Curing Compound: ASTM C309, Type 1, Class B.

F. Clear, Waterborne, Membrane-Forming, Curing and Sealing Compound: ASTM C1315, Type 1, Class A.

2.5 RELATED MATERIALS

A. Expansion- and Isolation-Joint-Filler Strips: ASTM D1751, asphalt-saturated cellulosic fiber or ASTM D1752, cork or self-expanding cork.

2.6 CONCRETE MIXTURES, GENERAL

A. Prepare design mixtures for each type and strength of concrete, proportioned on the basis of laboratory trial mixture or field test data, or both, in accordance with ACI 301.

1. Use a qualified testing agency for preparing and reporting proposed mixture designs, based on laboratory trial mixtures.

B. Cementitious Materials: Limit percentage, by weight, of cementitious materials other than portland cement in concrete as follows:

1. Fly Ash or Other Pozzolans: 25 percent by mass.

2. Slag Cement: 50 percent by mass.

3. Total of Fly Ash or Other Pozzolans, Slag Cement: 50 percent by mass, with fly ash or pozzolans not exceeding 25 percent by mass.

4. Total of Fly Ash or Other Pozzolans: 35 percent by mass with fly ash or pozzolans not exceeding 25 percent by mass.

C. Admixtures: Use admixtures in accordance with manufacturer's written instructions.

1. Use water-reducing, high-range water-reducing, or plasticizing admixture in concrete, as required, for placement and workability.

2. Use water-reducing and -retarding admixture when required by high temperatures, low humidity, or other adverse placement conditions.

3. Use water-reducing admixture in pumped concrete, concrete for heavy-use industrial slabs concrete for parking structure slabs, and concrete with a w/cm below 0.50.

CAST-IN-PLACE CONCRETE 033000 - 5

2.7 CONCRETE MIXTURES

A. Class A, Normal-weight concrete used for footings, grade beams, .

1. Exposure Class: ACI 318, F1.

2. Minimum Compressive Strength: 4000 psi at 28 days.

3. Slump Limit: conform with ASTM C143 as permitted under ACI 301.

4. Air Content:

a. Exposure Class F1: 4.5 percent, plus or minus 1.5 percent at point of delivery for concrete containing 1-inch nominal maximum aggregate size.

2.8 CONCRETE MIXING

A. Ready-Mixed Concrete: Measure, batch, mix, and deliver concrete in accordance with ASTM C94/C94M[ and ASTM C1116/C1116M], and furnish batch ticket information.

PART 3 - EXECUTION

3.1 INSTALLATION OF EMBEDDED ITEMS

A. Place and secure anchorage devices and other embedded items required for adjoining Work that is attached to or supported by cast-in-place concrete.

1. Use setting drawings, templates, diagrams, instructions, and directions furnished with items to be embedded.

2. Install anchor rods, accurately located, to elevations required and complying with tolerances in Section 7.5 of ANSI/AISC 303.

3.2 INSTALLATION OF VAPOR RETARDER

A. Sheet Vapor Retarders: Place, protect, and repair sheet vapor retarder in accordance with ASTM E1643 and manufacturer's written instructions.

1. Install vapor retarder with longest dimension parallel with direction of concrete pour.

2. Face laps away from exposed direction of concrete pour.

3. Lap vapor retarder over footings and grade beams not less than 6 inches sealing vapor retarder to concrete.

4. Lap joints 6 inches and seal with manufacturer's recommended tape.

5. Terminate vapor retarder at the top of floor slabs, grade beams, and pile caps, sealing entire perimeter to floor slabs, grade beams, foundation walls, or pile caps.

6. Seal penetrations in accordance with vapor retarder manufacturer's instructions.

7. Protect vapor retarder during placement of reinforcement and concrete.

a. Repair damaged areas by patching with vapor retarder material, overlapping damages area by 6 inches on all sides, and sealing to vapor retarder.

CAST-IN-PLACE CONCRETE 033000 - 6

3.3 JOINTS

A. Construct joints true to line, with faces perpendicular to surface plane of concrete.

B. Construction Joints: Coordinate with floor concrete member pattern and concrete placement sequence.

1. Install so strength and appearance of concrete are not impaired, at locations indicated on Drawings or as approved by Architect.

2. Place joints perpendicular to main reinforcement.

a. Continue reinforcement across construction joints unless otherwise indicated.

b. Do not continue reinforcement through sides of strip placements of floors and slabs.

3. Form keyed joints as indicated. Embed keys at least 1-1/2 inches into concrete.

4. Locate joints for beams, slabs, joists, and girders at third points of spans. Offset joints in girders a minimum distance of twice the beam width from a beam-girder intersection.

5. Locate horizontal joints in walls and columns at underside of floors, slabs, beams, and girders and at the top of footings or floor slabs.

C. Control Joints in Slabs-on-Ground: Form weakened-plane control joints, sectioning concrete into areas as indicated. Construct control joints for a depth equal to at least one-fourth of concrete thickness as follows:

1. Grooved Joints: Form control joints after initial floating by grooving and finishing each edge of joint to a radius of 1/8 inch Repeat grooving of control joints after applying surface finishes. Eliminate groover tool marks on concrete surfaces.

2. Sawed Joints: Form control joints with power saws equipped with shatterproof abrasive or diamond-rimmed blades. Cut 1/8-inch- wide joints into concrete when cutting action does not tear, abrade, or otherwise damage surface and before concrete develops random cracks.

D. Isolation Joints in Slabs-on-Ground: After removing formwork, install joint-filler strips at slab junctions with vertical surfaces, such as column pedestals, foundation walls, grade beams, and other locations, as indicated.

1. Extend joint-filler strips full width and depth of joint, terminating flush with finished concrete surface unless otherwise indicated on Drawings.

2. Terminate full-width joint-filler strips not less than 1/2 inch or more than 1 inch below finished concrete surface, where joint sealants, specified in Section 079200 "Joint Sealants," are indicated.

3. Install joint-filler strips in lengths as long as practicable. Where more than one length is required, lace or clip sections together.

E. Doweled Joints:

1. Install dowel bars and support assemblies at joints where indicated on Drawings.

2. Lubricate or asphalt coat one-half of dowel bar length to prevent concrete bonding to one side of joint.

CAST-IN-PLACE CONCRETE 033000 - 7

F. Dowel Plates: Install dowel plates at joints where required.

3.4 CONCRETE PLACEMENT

A. Before placing concrete, verify that installation of formwork, reinforcement, embedded items, and vapor retarder is complete and that required inspections are completed.

1. Immediately prior to concrete placement, inspect vapor retarder for damage and deficient installation, and repair defective areas.

2. Provide continuous inspection of vapor retarder during concrete placement and make necessary repairs to damaged areas as Work progresses.

B. Notify Owner’s Representative and testing and inspection agencies 24 hours prior to commencement of concrete placement.

C. Do not add water to concrete during delivery, at Project site, or during placement unless approved by Owner’s Representative in writing, but not to exceed the amount indicated on the concrete delivery ticket.

1. Do not add water to concrete after adding high-range water-reducing admixtures to mixture.

D. Before test sampling and placing concrete, water may be added at Project site, subject to limitations of ACI 301, but not to exceed the amount indicated on the concrete delivery ticket.

1. Do not add water to concrete after adding high-range water-reducing admixtures to mixture.

E. Deposit concrete continuously in one layer or in horizontal layers of such thickness that no new concrete is placed on concrete that has hardened enough to cause seams or planes of weakness.

1. If a section cannot be placed continuously, provide construction joints as indicated.

2. Deposit concrete to avoid segregation.

3. Deposit concrete in horizontal layers of depth not to exceed formwork design pressures and in a manner to avoid inclined construction joints.

4. Consolidate placed concrete with mechanical vibrating equipment in accordance with

ACI 301.

a. Do not use vibrators to transport concrete inside forms.

b. Insert and withdraw vibrators vertically at uniformly spaced locations to rapidly penetrate placed layer and at least 6 inches (150 mm) into preceding layer.

c. Do not insert vibrators into lower layers of concrete that have begun to lose plasticity.

d. At each insertion, limit duration of vibration to time necessary to consolidate concrete, and complete embedment of reinforcement and other embedded items without causing mixture constituents to segregate.

F. Deposit and consolidate concrete for floors and slabs in a continuous operation, within limits of construction joints, until placement of a panel or section is complete.

CAST-IN-PLACE CONCRETE 033000 - 8

1. Do not place concrete floors and slabs in a checkerboard sequence.

2. Consolidate concrete during placement operations, so concrete is thoroughly worked around reinforcement and other embedded items and into corners.

3. Maintain reinforcement in position on chairs during concrete placement.

4. Screed slab surfaces with a straightedge and strike off to correct elevations.

5. Level concrete, cut high areas, and fill low areas.

6. Slope surfaces uniformly to drains where required.

7. Begin initial floating using bull floats or darbies to form a uniform and open-textured surface plane, before excess bleedwater appears on the surface.

8. Do not further disturb slab surfaces before starting finishing operations.

3.5 FINISHING FORMED SURFACES

A. As-Cast Surface Finishes:

1. ACI 301 Surface Finish SF-1.0: As-cast concrete texture imparted by form-facing material.

a. Patch voids larger than 1/2 inches wide or 1/2 inch deep.

b. Remove projections larger than 1/2 inch .

c. Tie holes do not require patching.

d. Surface Tolerance: ACI 117 Class D.

e. Locations: Apply to concrete surfaces exposed to public view.

2.

3.6 FINISHING FLOORS AND SLABS

A. Comply with ACI 302.1R recommendations for screeding, restraightening, and finishing operations for concrete surfaces. Do not wet concrete surfaces.

B. Scratch Finish:

1. While still plastic, texture concrete surface that has been screeded and bull-floated or darbied.

2. Use stiff brushes, brooms, or rakes to produce a profile depth of 1/4 inch (6 mm) in one direction.

3. Apply scratch finish to surfaces to receive concrete floor toppings or to receive mortar setting beds for bonded cementitious floor finishes.

C. Float Finish:

1. When bleedwater sheen has disappeared and concrete surface has stiffened sufficiently to permit operation of specific float apparatus, consolidate concrete surface with power-driven floats or by hand floating if area is small or inaccessible to power-driven floats.

2. Repeat float passes and restraightening until surface is left with a uniform, smooth, granular texture and complies with ACI 117 tolerances for conventional concrete.

3. Apply float finish to surfaces to receive trowel finish.

D. Trowel Finish:

CAST-IN-PLACE CONCRETE 033000 - 9

1. After applying float finish, apply first troweling and consolidate concrete by hand or power-driven trowel.

2. Continue troweling passes and restraighten until surface is free of trowel marks and uniform in texture and appearance.

3. Grind smooth any surface defects that would telegraph through applied coatings or floor coverings.

4. Do not add water to concrete surface.

5. Do not apply hard-troweled finish to concrete, which has a total air content greater than 3 percent.

6. Apply a trowel finish to surfaces exposed to view.

7. Finish and measure surface, so gap at any point between concrete surface and an unleveled, freestanding, 10-ft. long straightedge resting on two high spots and placed anywhere on the surface does not exceed 1/4 inch in 2 feet.

E. Broom Finish: Apply a broom finish to exterior concrete platforms, steps, ramps, and sidewalks.

1. Immediately after float finishing, slightly roughen trafficked surface by brooming with fiber-bristle broom perpendicular to main traffic route.

2. Coordinate required final finish with Architect before application.

3.7 CONCRETE CURING

A. Protect freshly placed concrete from premature drying and excessive cold or hot temperatures.

1. Comply with ACI 301 and ACI 306.1 for cold weather protection during curing.

2. Comply with ACI 301 and ACI 305.1 for hot-weather protection during curing.

3. Maintain moisture loss no more than 0.2 lb/sq. ft. x h, calculated in accordance with

ACI 305.1, before and during finishing operations.

B. Curing Formed Surfaces: Comply with ACI 308.1 as follows:

1. Cure formed concrete surfaces, including underside of beams, supported slabs, and other similar surfaces.

2. Cure concrete containing color pigments in accordance with color pigment manufacturer's instructions.

3. If forms remain during curing period, moist cure after loosening forms.

4. If removing forms before end of curing period, continue curing for remainder of curing period, as follows:

a. Continuous Fogging: Maintain standing water on concrete surface until final setting of concrete.

b. Continuous Sprinkling: Maintain concrete surface continuously wet.

c. Absorptive Cover: Pre-dampen absorptive material before application; apply additional water to absorptive material to maintain concrete surface continuously wet.

d. Water-Retention Sheeting Materials: Cover exposed concrete surfaces with sheeting material, taping, or lapping seams.

e. Membrane-Forming Curing Compound: Apply uniformly in continuous operation by power spray or roller in accordance with manufacturer's written instructions.

CAST-IN-PLACE CONCRETE 033000 - 10

1) Recoat areas subject to heavy rainfall within three hours after initial application.

2) Maintain continuity of coating and repair damage during curing period.

C. Conform to ACI 117.

3.8 FIELD QUALITY CONTROL

A. Testing Agency: Engage a qualified testing and inspecting agency to perform tests and inspections and to submit reports.

1. Testing agency to immediately report to Owner’s Representative, Contractor, and concrete manufacturer any failure of Work to comply with Contract Documents.

2. Testing agency shall report results of tests and inspections, in writing, to Owner’s

Representative, Contractor, and concrete manufacturer within 48 hours of inspections and tests.

a. Test reports to include reporting requirements of ASTM C31/C31M, ASTM C39/C39M, and ACI 301, including the following as applicable to each test and inspection:

1) Project name.

2) Name of testing agency.

3) Names and certification numbers of field and laboratory technicians performing inspections and testing.

4) Name of concrete manufacturer.

5) Date and time of inspection, sampling, and field testing.

6) Date and time of concrete placement.

7) Location in Work of concrete represented by samples.

8) Date and time sample was obtained.

9) Truck and batch ticket numbers.

10) Design compressive strength at 28 days.

11) Concrete mixture designation, proportions, and materials.

12) Field test results.

13) Information on storage and curing of samples before testing, including curing method and maximum and minimum temperatures during initial curing period.

14) Type of fracture and compressive break strengths at seven days and 28 days.

B. Batch Tickets: For each load delivered, submit three copies of batch delivery ticket to testing agency, indicating quantity, mix identification, admixtures, design strength, aggregate size, design air content, design slump at time of batching, and amount of water that can be added at Project site.

C. Inspections:

D. Concrete Tests: Testing of composite samples of fresh concrete obtained in accordance with ASTM C 172/C 172M shall be performed in accordance with the following requirements:

CAST-IN-PLACE CONCRETE 033000 - 11

1. Testing Frequency: Obtain one composite sample for each day's pour of each concrete mixture exceeding 5 cu. yd. but less than 25 cu. yd. plus one set for each additional 50 cu.

yd. or fraction thereof.

a. When frequency of testing provides fewer than five compressive-strength tests for each concrete mixture, testing to be conducted from at least five randomly selected batches or from each batch if fewer than five are used.

2. Slump: ASTM C143/C143M:

a. One test at point of placement for each composite sample, but not less than one test for each day's pour of each concrete mixture.

b. Perform additional tests when concrete consistency appears to change.

3. Air Content: ASTM C231/C231M pressure method, for normal-weight concrete;

a. One test for each composite sample, but not less than one test for each day's pour of each concrete mixture.

4. Concrete Temperature: ASTM C1064/C1064M:

a. One test hourly when air temperature is 40 deg F and below or 80 deg F and above, and one test for each composite sample.

5. Compression Test Specimens: ASTM C31/C31M:

a. Cast and laboratory cure two sets of four 6-inch by 12-inch cylinder specimens for each composite sample.

6. Compressive-Strength Tests: ASTM C39/C39M.

a. Test one set of four laboratory-cured specimens at seven days and one set of two specimens at 28 days.

7. When strength of field-cured cylinders is less than 85 percent of companion laboratory-cured cylinders, Contractor to evaluate operations and provide corrective procedures for protecting and curing in-place concrete.

8. Strength of each concrete mixture will be satisfactory if every average of any three consecutive compressive-strength tests equals or exceeds specified compressive strength, and no compressive-strength test value falls below specified compressive strength by more than 500 psi if specified compressive strength is 5000 psi or no compressive strength test value is less than 10 percent of specified compressive strength if specified compressive strength is greater than 5000 psi

9. Nondestructive Testing: Impact hammer, sonoscope, or other nondestructive device may be permitted by Architect but will not be used as sole basis for approval or rejection of concrete.

10. Additional Tests:

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a. Testing and inspecting agency to make additional tests of concrete when test results indicate that slump, air entrainment, compressive strengths, or other requirements have not been met, as directed by Architect.

b. Testing and inspecting agency may conduct tests to determine adequacy of concrete by cored cylinders complying with ASTM C42/C42M or by other methods as directed by Architect.

1) Acceptance criteria for concrete strength to be in accordance with ACI 301 Section 1.6.6.3.

11. Additional testing and inspecting, at Contractor's expense, will be performed to determine compliance of replaced or additional work with specified requirements.

12. Correct deficiencies in the Work that test reports and inspections indicate do not comply with the Contract Documents.

3.9 PROTECTION

A. Protect concrete surfaces as follows:

1. Protect from petroleum stains.

2. Diaper hydraulic equipment used over concrete surfaces.

3. Prohibit vehicles from interior concrete slabs.

4. Prohibit use of pipe-cutting machinery over concrete surfaces.

5. Prohibit placement of steel items on concrete surfaces.

6. Prohibit use of acids or acidic detergents over concrete surfaces.

7. Protect liquid floor treatment from damage and wear during the remainder of construction period. Use protective methods and materials, including temporary covering, recommended in writing by liquid floor treatments installer.

END OF SECTION 033000

EARTH MOVING 312000 - 1

A. Section Includes:

1. Excavating and filling for rough grading the Site.

2. Preparing subgrades for pavements.

3. Excavating and backfilling for buildings and structures.

4. Drainage course for concrete slabs-on-grade.

5. Subbase course for concrete walks, pavements.

6. Subbase course and base course for asphalt paving.

7. Excavating and backfilling trenches for utilities and pits for buried utility structures.

1.2 DEFINITIONS

A. Backfill: Soil material used to fill an excavation.

1. Initial Backfill: Backfill placed beside and over pipe in a trench, including haunches to support sides of pipe.

2. Final Backfill: Backfill placed over initial backfill to fill a trench.

B. Base Course: Aggregate layer placed between the subbase course and hot-mix asphalt paving.

C. Bedding Course: Aggregate layer placed over the excavated subgrade in a trench before laying pipe.

D. Borrow Soil: Satisfactory soil imported from off-site for use as fill or backfill.

E. Drainage Course: Aggregate layer supporting the slab-on-grade that also minimizes upward capillary flow of pore water.

F. Excavation: Removal of material encountered above subgrade elevations and to lines and dimensions indicated.

1. Authorized Additional Excavation: Excavation below subgrade elevations or beyond indicated lines and dimensions as directed by Architect. Authorized additional excavation and replacement material will be paid for according to Contract provisions for changes in the Work.

2. Unauthorized Excavation: Excavation below subgrade elevations or beyond indicated lines and dimensions without direction by Architect. Unauthorized excavation, as well as remedial work directed by Architect, will be without additional compensation.

G. Fill: Soil materials used to raise existing grades.

H. Structures: Buildings, footings, foundations, retaining walls, slabs, tanks, curbs, mechanical and electrical appurtenances, or other fabricated stationary features constructed above or below the ground surface.

EARTH MOVING 312000 - 2

I. Subbase Course: Aggregate layer placed between the subgrade and base course for hot-mix asphalt pavement, or aggregate layer placed between the subgrade and a cement concrete pavement or a cement concrete or hot-mix asphalt walk.

J. Subgrade: Uppermost surface of an excavation or the top surface of a fill or backfill immediately below subbase, drainage fill, drainage course, or topsoil materials.

K. Utilities: On-site underground pipes, conduits, ducts, and cables as well as underground services within buildings.

1.3 PREINSTALLATION MEETINGS

A. Preinstallation Meeting: Conduct pre-excavation meeting at prior to commencement of work.

1.4 INFORMATIONAL SUBMITTALS

A. Material test reports.

1.5 FIELD CONDITIONS

A. Utility Locator Service: Notify utility locator service for area where Project is located before beginning earth-moving operations.

PART 2 - PRODUCTS

2.1 SOIL MATERIALS

A. General: Provide borrow soil materials when sufficient satisfactory soil materials are not available from excavations.

B. Satisfactory Soils: Soil Classification Groups GW, GP, GM, SW, SP, and SM according to ASTM D2487. Groups A-1, A-2-4, A-2-5, and A-3 according to AASHTO M 145, or a combination of these groups; free of rock or gravel larger than 3 inches in any dimension, debris, waste, frozen materials, vegetation, and other deleterious matter.

C. Unsatisfactory Soils: Soil Classification Groups GC, SC, CL, ML, OL, CH, MH, OH, and PT according to ASTM D2487. Groups A-2-6, A-2-7, A-4, A-5, A-6, and A-7 according to AASHTO M 145 or a combination of these groups.

1. Unsatisfactory soils also include satisfactory soils not maintained within 2 percent of optimum moisture content at time of compaction.

D. Subbase Material: Naturally or artificially graded mixture of natural or crushed gravel, crushed stone, and natural or crushed sand; ASTM D2940/D2940M; with at least 90 percent passing a 1- 1/2-inch sieve and not more than 12 percent passing a No. 200 sieve.

EARTH MOVING 312000 - 3

E. Base Course: Naturally or artificially graded mixture of natural or crushed gravel, crushed stone, and natural or crushed sand; ASTM D2940/D2940M; with at least 95 percent passing a 1- 1/2-inch sieve and not more than 8 percent passing a No. 200 sieve.

F. Engineered Fill: Naturally or artificially graded mixture of natural or crushed gravel, crushed stone, and natural or crushed sand; ASTM D2940/D2940M; with at least 90 percent passing a 1- 1/2-inch sieve and not more than 12 percent passing a No. 200 sieve.

G. Bedding Course: Naturally or artificially graded mixture of natural or crushed gravel, crushed stone, and natural or crushed sand; ASTM D2940/D2940M; except with 100 percent passing a 1-inch sieve and not more than 8 percent passing a No. 200 sieve.

H. Drainage Course: Narrowly graded mixture of [washed ]crushed stone, or crushed or uncrushed gravel; ASTM D448; coarse-aggregate grading Size 57; with 100 percent passing a 1-1/2-inch sieve and zero to 5 percent passing a No. 8 sieve.

2.2 ACCESSORIES

A. Warning Tape: Acid- and alkali-resistant, polyethylene film warning tape manufactured for marking and identifying underground utilities, 6 inches wide and 4 mils thick, continuously inscribed with a description of the utility; colored to comply with local practice or requirements of authorities having jurisdiction.

B. Detectable Warning Tape: Acid- and alkali-resistant, polyethylene film warning tape manufactured for marking and identifying underground utilities, a minimum of 6 inches wide and 4 mils thick, continuously inscribed with a description of the utility, with metallic core encased in a protective jacket for corrosion protection, detectable by metal detector when tape is buried up to 30 inches deep; colored to comply with local practice or requirements of authorities having jurisdiction.

PART 3 - EXECUTION

3.1 PREPARATION

A. Protect structures, utilities, sidewalks, pavements, and other facilities from damage caused by settlement, lateral movement, undermining, washout, and other hazards created by earth-moving operations.

B. Protect and maintain erosion and sedimentation controls during earth-moving operations.

C. Protect subgrades and foundation soils from freezing temperatures and frost. Remove temporary protection before placing subsequent materials.

3.2 EXCAVATION, GENERAL

A. Unclassified Excavation: Excavate to subgrade elevations regardless of the character of surface and subsurface conditions encountered. Unclassified excavated materials may include rock, soil

EARTH MOVING 312000 - 4

materials, and obstructions. No changes in the Contract Sum or the Contract Time will be authorized for rock excavation or removal of obstructions.

1. If excavated materials intended for fill and backfill include unsatisfactory soil materials and rock, replace with satisfactory soil materials.

3.3 EXCAVATION FOR STRUCTURES

A. Excavate to indicated elevations and dimensions within a tolerance of plus or minus 1 inch. If applicable, extend excavations a sufficient distance from structures for placing and removing concrete formwork, for installing services and other construction, and for inspections.

1. Excavations for Footings and Foundations: Do not disturb bottom of excavation.

Excavate by hand to final grade just before placing concrete reinforcement. Trim bottoms to required lines and grades to leave solid base to receive other work.

2. Pile Foundations: Stop excavations 6 to 12 inches above bottom of pile cap before piles are placed. After piles have been driven, remove loose and displaced material. Excavate to final grade, leaving solid base to receive concrete pile caps.

3. Excavation for Underground Tanks, Basins, and Mechanical or Electrical Utility Structures: Excavate to elevations and dimensions indicated within a tolerance of plus or minus 1 inch. Do not disturb bottom of excavations intended as bearing surfaces.

B. Excavations at Edges of Tree- and Plant-Protection Zones:

1. Excavate by hand or with an air spade to indicated lines, cross sections, elevations, and subgrades. If excavating by hand, use narrow-tine spading forks to comb soil and expose roots. Do not break, tear, or chop exposed roots. Do not use mechanical equipment that rips, tears, or pulls roots.

2. Cut and protect roots according to requirements in Section 015639 "Temporary Tree and Plant Protection."

3.4 EXCAVATION FOR WALKS AND PAVEMENTS

A. Excavate surfaces under walks and pavements to indicated lines, cross sections, elevations, and subgrades.

3.5 EXCAVATION FOR UTILITY TRENCHES

A. Excavate trenches to indicated gradients, lines, depths, and elevations.

B. Excavate trenches to uniform widths to provide the following clearance on each side of pipe or conduit. Excavate trench walls vertically from trench bottom to 12 inches higher than top of pipe or conduit unless otherwise indicated.

1. Clearance: 12 inches each side of pipe or conduit.

C. Trench Bottoms: Excavate and shape trench bottoms to provide uniform bearing and support of pipes and conduit. Shape subgrade to provide continuous support for bells, joints, and barrels of

EARTH MOVING 312000 - 5

pipes and for joints, fittings, and bodies of conduits. Remove projecting stones and sharp objects along trench subgrade.

1. Excavate trenches 6 inches deeper than elevation required in rock or other unyielding bearing material to allow for bedding course.

3.6 SUBGRADE INSPECTION

A. Proof-roll subgrade with a pneumatic-tired dump truck to identify soft pockets and areas of excess yielding. Do not proof-roll wet or saturated subgrades.

B. Reconstruct subgrades damaged by freezing temperatures, frost, rain, accumulated water, or construction activities, as directed by Architect, without additional compensation.

3.7 UNAUTHORIZED EXCAVATION

A. Fill unauthorized excavation under foundations or wall footings by extending bottom elevation of concrete foundation or footing to excavation bottom, without altering top elevation.