B08_Attachment_2_-_Specifications_0001.pdf

Bureau of Land Management - Colorado State Office

2022-04-25 General Information and Requirements GJFO - Dinosaur Hill Site Improvements 01 00 09.00- 1 of 7

SECTION 01 00 09.00 - GENERAL INFORMATION AND REQUIREMENTS

PART 1: GENERAL

1.1 SUMMARY:

A. Description of Work: Furnishing all labor, equipment, supplies, and materials to do the following tasks:

1. rebuild portions of a trail incorporating a curb and gutter to prevent future erosion

2. Install a culvert in the site access road.

3. Manage stormwater runoff on site by installing drainage swales as indicated on contract drawings.

4. Demolish the following existing features of the site:

4.1 shade structures

4.2 Benches within demolished shade structures

4.3 Picnic tables within existing parking lot shade shelter

(but retain parking lot shelter)

5. Replace demolished shade shelters as indicated

6. Install concrete benches

7. Place existing kiosk monoliths for new kiosks on site

8. Replace a sunken concrete walk in the area identified on site.

9. Remove an existing post and cable fence.

10. Remove and reset a steel-post barbed-wire fence to accommodate proposed drainage structures.

11. Outline a dinosaur as identified on the contract drawings as part of the kiosk area of the site.

GJFO - Dinosaur Hill Site Improvements 01 00 09.00- 2 of 7

B. Location: Work under this Contract is located in Mesa County, Colorado as shown on the Title Sheet.

1.2 REFERENCES:

A. Referenced Specifications/Standards with Abbreviations and/or Acronyms: Wherever acronyms are used in these specifications or on the drawings, they are to be construed the same as the respective expressions represented. Copies of the referenced specifications/standards referred to herein may be procured by the Contractor.

1.3 DEFINITIONS:

A. Approvals: Approval of the submittals is an indication that the Contractor's submittals have been reviewed and that there are no objections, except as noted. Approval of deviations shall apply only to those deviations or omissions from the requirements of the drawings and specifications brought to the Contracting Officer's attention in writing. After approval of an item, the Contractor may submit a substitute for approval when the approved item cannot be purchased or delivered in time to avoid delay in completion of the project.

1.4 SUBMITTALS:

A. Scope: Submittals include design computations, manufacturers' literature and samples as identified in respective Specification Sections, this Section, and the Contract Drawings.

B. Requirements: Refer to specifications for submittals required. Allow at least 10 working days for review.

Submittals shall be delivered to the BLM, Colorado State Office, 2850 Youngfield Street, Lakewood , CO 80125, Attention: Gene Lietzau.

C. Identification of Submittals: Completely identify each submittal by showing at least the following information:

1. Name and address of submitter, plus name and telephone number of the individual to contact for further information.

2. Name of project as it appears in these specifications.

3. Contract number, drawing number, and specification section number to which the submittal applies.

GJFO - Dinosaur Hill Site Improvements 01 00 09.00- 3 of 7

4. Whether this is an original submittal or resubmittal.

5. Each item shall clearly note the manufacturer's name and address, trade name, product, lot, style, color, catalog designation or model number, and locations of use.

1.5 CERTIFICATES OF CONFORMANCE:

A. Requirements: The Contracting Officer may permit use, prior to sampling and testing, of materials when accompanied by Certificates of Conformance. Materials used on the basis of a Certificate of Conformance may be sampled and tested.

Installation of materials on the basis of Certificates of Conformance shall not relieve the Contractor of responsibility for incorporating materials which conform to the requirements of the drawings and specifications.

Material not conforming to those requirements will be subject to rejection, whether in place or not.

B. Format: The form of the Certificate of Conformance provided by the supplier shall be as follows:

1. The certificate shall state that the named product conforms to the Contract requirements.

2. The certificate shall either be accompanied with a certified copy of the test results, or certify that such test results are on file with the manufacturer and will be furnished to the Contracting Officer upon request.

3. The certificate shall provide the name and address of the manufacturer, the testing agency and the date of tests.

4. The certificate shall set forth the means of identification which will permit field determination of the product delivered as being the product covered by the certification.

GJFO - Dinosaur Hill Site Improvements 01 00 09.00- 4 of 7

1.6 QUALITY ASSURANCE:

A. Codes and Standards: The work shall comply with codes and standards applicable to each type of work and as listed in the individual sections of these specifications. This Contract incorporates materials, applications, and tests by reference, with the same force and effect as when they were given in full text.

B. Conflict: Where a conflict occurs between reference documents and project specifications, the project specifications shall govern.

1.7 DELIVERY, STORAGE, AND HANDLING:

A. Delivery: The Contractor shall protect products incorporated into the work from damage while in transit to the site. Products must be delivered in original unopened containers with manufacturer's name, brand designation, and contents legibly indicated.

B. Storage: The Contractor shall provide temporary storage facilities for products as necessary.

1. Storage shall comply with the manufacturer's instructions.

2. The storage area shall permit access for inspection and handling.

C. Handling: The Contractor shall load and unload products in such a manner that protects them from damage.

1.8 PROJECT/SITE CONDITIONS:

A. Access to the Work: Access to the work shall be provided by the BLM, during normal working hours, 07:00 a.m. to 5:00 p.m., Monday thru Friday. No work will be allowed on the weekends without written approval from the Government.

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

C. NPDES Construction

1. Contractor will comply with NPDES requirements governing site.

GJFO - Dinosaur Hill Site Improvements 01 00 09.00- 5 of 7

2. Contractor is responsible for supplying SWPPP, supplying and installing erosion control BMPs, and securing permitting as required by NPDES regulations.

3. This project is planned for construction within a Low Erosivity Waiverperiod

3.1 If construction schedule changes outside of planned

schedule from installation between August 1 and December 31, the calculated R value may change and require the contractor to submit a formal Notice of Intent and secure a Construction NPDES permit from EPA.

3.2 The contractor shall be responsible for any increase in

project cost associated with a required NPDES permit.

D. Incidental Operations: Land administered by the Government may be used by the Contractor for incidental operations such as materials storage, project office, equipment parking and camping. These areas shall be approved in advance by the Contracting Officer. Environmental considerations of the preceding paragraphs will apply.

E. Road Weight Limits: The Contractor shall strictly adhere to local County and Colorado State road weight restrictions for hauling equipment and materials. It is the responsibility of the Contractor to research, understand and comply with the limits during any portion of the project.

1.9 SEQUENCING AND SCHEDULING:

A. Work Schedule: The work schedule shall be submitted at the pre-work conference. When requested, the Contractor shall submit an updated schedule within 3 calendar days.

PART 2: PRODUCTS

(There are no applicable requirements.)

PART 3: EXECUTION

3.1 PROJECT MEETINGS:

A. Pre-Work Conference:

1. A pre-work conference will be held prior to the start of work. The Contractor will be notified in advance of meeting time, date and place. The purpose will be to

GJFO - Dinosaur Hill Site Improvements 01 00 09.00- 6 of 7 review the required work, project drawings and specifications, construction schedules, payroll and payments, and administrative provisions of the Contract.

The Contractor, subcontractors and the persons responsible for coordination of the work shall be present at the meeting.

2. The Contractor shall be prepared to summarize and explain procedures planned for the project and submittals requested in the specifications.

B. Progress Meetings:

1. Meetings shall be held at the project site, or as determined by the Contracting Officer.

2. Meetings may be called by either the Contracting Officer or the Contractor. Request shall state who should attend and include an agenda.

3. Final Inspection:

3.1 Meeting shall be held at the project site, or as

determined by the Contracting Officer.

3.2 The Contractor shall notify the Contracting Officer in

writing at least 5 working days before the completion date so the Government can schedule final inspection.

3.3 The Contractor shall require the superintendent to be

present during this inspection.

GJFO - Dinosaur Hill Site Improvements 01 00 09.00- 7 of 7

3.2 WORK LAYOUT:

A. Requirements: contractor is responsible for construction surveying and construction to achieve measurements, lines and grades necessary for the work executed under the Contract. Baseline monuments or benchmarks disturbed or removed during construction shall be reset by the Contractor at the Contractor's expense.

PART 4: MEASUREMENT AND PAYMENT

4.1 METHOD OF MEASUREMENT:

A. Units: The work described in this section will not be measured for payment.

4.2 BASIS OF PAYMENT:

A. Payment: No direct payment for the work described under this section will be made. The Contractor shall include consideration for this item in the bid price for other items of the Contract.

END OF SECTION

2022-04-25 Miscellaneous Specifications GJFO - Dinosaur Hill Site Improvements 01 09 90.00- 1 of 1

SECTION 01 09 90.00 - Miscellaneous Specifications

PART 1: GENERAL

1.1 SUMMARY

A. Section Includes: Furnishing and installing steel parking delineators and steel wheel stops.

B. General-Alternate Materials: Any/all items requested by the Contractor to be supplied in place of the specified item must have the same salient characteristics, design criteria, and dimensions of the applicable specified item.

1.2 MEASUREMENT AND PAYMENT

A. The work described in this section shall be measured and paid for by lump sum as shown on the Bid Schedule.

PART 2: PRODUCTS

2.1 MATERIALS

A. Steel Parking Delineators: Steel according to ASTM A 53 and as shown on the drawings.

B. Steel Parking Stops: Steel according to ASTM A 53 and as shown on the drawings.

PART 3: EXECUTION

3.1 INSTALLATION

A. Steel Parking Delineators: Construct as shown the drawings.

Install at the locations as shown on the drawings. Parking delineators/stops shall be set in a straight line.

Distances between items shall be symmetrical. Elevations of delineators/stops shall be installed on a uniform grade throughout the parking area.

B. Provide for parking space width as shown on drawings.

C. Steel Wheel Stops: Set at the locations as shown on the plans. Set level on the finished compacted aggregate surface. Concrete wheel stops in multiple car parking areas shall be set in a straight line along the entire length of the parking areas and on a uniform grade as shown on the drawing. Anchor stops as shown on the drawing.

D. Provide 10’ width parking spaces minimum.

2022-04-25 Unit Prices GJFO - Dinosaur Hill Site Improvements 01 22 00.00- 1 of 2

SECTION SECTION 012200 - UNIT PRICES

PART 1: GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and other Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section includes administrative and procedural requirements for unit prices.

B. DEFINITIONS

1. Unit price is a price per unit of measurement for materi-als, equipment, or services, or a portion of the Work, added to or deducted from the Contract Sum by appropriate modification, if the scope of Work or estimated quantities of Work required by the Contract Documents are increased or decreased.

1.3 PROCEDURES

A. Unit prices include all necessary material, plus cost for delivery, installation, insurance, applicable taxes, over-head, and profit.

B. Measurement and Payment: See individual Specification Sec-tions for work that requires establishment of unit prices.

Methods of measurement and payment for unit prices are specified in those Sections.

C. Government reserves the right to reject Contractor's meas-urement of work-in-place that involves use of established unit prices and to have this work measured, at Government’s expense, by a surveyor acceptable to Contractor.

D. List of Unit Prices: A schedule of unit prices is included

2022-04-25 Unit Prices GJFO - Dinosaur Hill Site Improvements 01 22 00.00- 2 of 2 with the contract package.

PART 2: PRODUCTS (Not Used)

PART 3: EXECUTION (Not Used)

END OF SECTION 012200

Bureau of Land Management - Colorado State OfficeBureau of Land Management - Colorado State OfficeBureau of Land Management - Colorado State Office

2022-04-25 Project Schedule GJFO - Dinosaur Hill Site Improvements 01 32 01.00- 1 of 2

SECTION 01 32 01.00 PROJECT SCHEDULE

PART 1: GENERAL

1.1 SUBMITTALS

A. Government approval is required for submittals with a "G" designation. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

1. SD-01 Preconstruction Submittals Initial Project Schedule;

G

PART 2: PRODUCTS

Not Used

PART 3: EXECUTION

3.1 GENERAL REQUIREMENTS

A. Prepare for approval a Project Schedule, as specified herein, and pursuant to FAR Clause 52.236-15 Schedules for Construction Contracts. Show in the schedule the proposed sequence to perform the work and dates contemplated for starting and completing all schedule activities. The scheduling of the entire project is required.

3.2 PROJECT SCHEDULE DETAILED REQUIREMENTS

A. Level of Detail Required

B. Develop the Project Schedule to the appropriate level of detail to address major milestones and to allow for satisfactory project planning and execution.

C. Mandatory Tasks

D. Include the following activities/tasks in the initial project schedule and all updates.

1. Submission, review and acceptance of submittals.

2. Long procurement activities

3. Contractor's pre-final inspection.

4. Government's pre-final inspection.

5. Final inspection.

E. Government Activities

1. Include Government activities that could impact progress.

Bureau of Land Management - Colorado State OfficeBureau of Land Management - Colorado State OfficeBureau of Land Management - Colorado State Office

2022-04-25 Project Schedule GJFO - Dinosaur Hill Site Improvements 01 32 01.00- 2 of 2

These activities include, but are not limited to:

Government inspections of work, Government approval of submittals.

3.3 WEEKLY PROGRESS MEETINGS

A. Conduct a weekly meeting with the Government for the purpose of jointly reviewing the actual progress of the project as compared to the as planned progress and to review planned activities.

3.4 FAILURE TO ACHIEVE PROGRESS

A. Should the progress fall behind the approved project schedule, the Contracting Officer may require provision of a written recovery plan for approval. The plan must detail how progress will be made-up to include which activities will be accelerated by adding additional crews, longer work hours, extra work days, etc.

3.5 Failure to Perform

A. Failure to perform work and maintain progress in accordance with the supplemental recovery plan may result in an interim and final unsatisfactory performance rating and may result in corrective action directed by the Contracting Officer pursuant to FAR 52.236-15 Schedules for Construction Contracts, FAR 52.249-10 Default (Fixed-Price Construction), and other contract provisions.

3.6 Recovery Schedule

A. Should the Contracting Officer find it necessary, submit a recovery schedule pursuant to FAR 52.236-15 Schedules for Construction Contracts.

2022-04-25 Submittal Procedures GJFO - Dinosaur Hill Site Improvements 01 33 00- 1 of 2

SECTION 01 33 00 SUBMITTAL PROCEDURES

PART 1: GENERAL

1.1 SUBMITTALS

A. Government approval is required for submittals with a "G" designation; submittals not having a "G" designation are for information only.

1.2 INFORMATION ONLY SUBMITTALS

A. Normally submittals for information only will not be returned. Approval of the Contracting Officer's Representative is not required on information only submittals. The Government reserves the right to require the Contractor to resubmit any item found not to comply with the contract.

B. This does not relieve the Contractor from the obligation to furnish material conforming to the plans and specifications; will not prevent the Contracting Officer from requiring removal and replacement of nonconforming material incorporated in the work; and does not relieve the Contractor of the requirement to furnish samples for testing by the Government laboratory or for check testing by the Government in those instances where the technical specifications so prescribe.

1.3 GOVERNMENT APPROVING AUTHORITY

A. The Contracting Officer's Representative will:

1. Note the date on which the submittal was received.

2. Review submittals for approval within 10 days of receipt.

3. Identify returned submittals with one of the actions defined in paragraph REVIEW NOTATIONS and with markings appropriate for action indicated.

B. Upon completion of review of submittals requiring Government approval, one copy of the submittal will be retained by the Contracting Officer's Representative and one copy of the submittal will be returned to the Contractor.

1.4 Review Notations

A. Submittals will be returned to the Contractor with the

2022-04-25 Submittal Procedures GJFO - Dinosaur Hill Site Improvements 01 33 00- 2 of 2 following notations:

1. Submittals marked "approved" or "accepted" authorize the Contractor to proceed with the work covered.

2. Submittals marked "approved as noted" or "approved, except as noted, resubmittal not required," authorize the Contractor to proceed with the work covered provided the Contractor takes no exception to the corrections.

3. Submittals marked "not approved" or "disapproved," or "revise and resubmit," indicate noncompliance with the contract requirements or design concept, or that submittal is incomplete. Resubmit with

2022-04-25 Demolition GJFO - Dinosaur Hill Site Improvements 02 41 00.00- 1 of 2

SECTION 02 41 00 DEMOLITION

PART 1: GENERAL

1.1 Provide all materials and labor necessary to demolish and remove specified items.

PART 2: PRODUCTS

2.1 Not Used.

PART 3: EXECUTION

3.1 Take necessary precautions to avoid damage to existing

trees and vegetation and structures and rock formations which might be damaged during demolition or construction.

3.2 Remove all existing picnic tables in existing shade

shelter.

3.3 Remove range fencing necessary to install drainage swale

around south side of access road and parking circle. Leave range fencing outside of this area and reconnect to it.

Remove from site any fence material not salvageable in the fence relocation.

3.4 Remove all post and cable trail barrier on all site trails.

3.5 Remove existing wooden shade shelters and benches (2) EA

both on North trail.

3.6 Shade shelter at parking lot shall remain in place.

3.7 Remove existing trail drainage culverts as marked and as

necessary to construct proposed trail. These will be replaced by trail drainage pans.

3.8 Relocate but do not demo existing used sandstone kiosk

panels form their storage location at the old kiosk location near the past highway ROW.

A. Cut bolts on the old kiosk foundation flush with grade.

B. Reuse bolts in sandstone panels as possible according to

2022-04-25 Demolition GJFO - Dinosaur Hill Site Improvements 02 41 00.00- 2 of 2 the contract drawings.

PART 4: DISPOSAL OF REMOVED MATERIALS

4.1 All materials removed, shall become the property of the

Contractor and shall be removed from Government property and disposed of in a legal manner.

2022-04-25 Cast-in-Place Concrete GJFO - Dinosaur Hill Site Improvements 03 30 00.00- 1 of 20

SECTION 033000 - CAST-IN-PLACE CONCRETE

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section includes cast-in-place concrete, including formwork, reinforcement, concrete materials, mixture design, placement procedures, and finishes.

B. Related Requirements:

1. Section 01 00 09 “GENERAL INFORMATION AND REQUIREMENTS”

2. Section 033300 "Cast In Place Concrete" for general building applications of specially finished formed concrete.

3. Section 312000 "Earth Moving" for drainage fill under slabs-on-grade.

4. Section 033533 “Stamped Concrete” for stamping concrete identified on Contract Drawings

5. Section 033550 “Integrally Colored Concrete” for coloring concrete identified on Contract Drawings.

1.3 MEASUREMENT AND PAYMENT

A. General: Measurement and payment for concrete work will be by the lump-sum method or as listed on the bid items indicated in the Bid Schedule or the Bid Form.

1.4 DEFINITIONS

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

GJFO - Dinosaur Hill Site Improvements 03 30 00.00- 2 of 20

B. W/C Ratio: The ratio by weight of water to cementitious materials.

1.5 PREINSTALLATION MEETINGS

A. Preinstallation Conference: Conduct conference at Project site.

1. Review special inspection and testing and inspecting agency procedures for field quality control, concrete finishes and finishing, cold- and hot-weather concreting procedures, curing procedures, construction contraction and isolation joints, forms and form removal limitations, steel reinforcement installation, methods for achieving specified and slab flatness and levelness floor and slab flatness and levelness measurement, concrete repair procedures, site utilities, access gate magnetic vehicle detection pad, and concrete protection.

1.6 ACTION SUBMITTALS

A. Product Data: For each type of product.

B. Design Mixtures: For each concrete mixture. Submit alternate design mixtures when characteristics of materials, Project conditions, weather, test results, or other circumstances warrant adjustments.

1. Indicate amounts of mixing water to be withheld for later addition at Project site.

C. Construction Joint Layout: Indicate proposed construction joints required to construct the structure.

1. Location of construction joints is subject to approval of the Contract Officer.

1.7 INFORMATIONAL SUBMITTALS

A. Qualification Data: For Installer, manufacturer, and testing agency.

B. Material Certificates: For each of the following, signed by manufacturers:

1. Cementitious materials.

GJFO - Dinosaur Hill Site Improvements 03 30 00.00- 3 of 20

2. Admixtures.

3. Form materials and form-release agents.

4. Steel reinforcement and accessories.

5. Fiber reinforcement.

6. Curing compounds.

7. Floor and slab treatments.

8. Semirigid joint filler.

9. Joint-filler strips.

10. Repair materials.

C. Material Test Reports: For the following, from a qualified testing agency:

1. Aggregates: Include service record data indicating absence of deleterious expansion of concrete due to alkali aggregate reactivity.

D. Field quality-control reports.

E. Minutes of preinstallation conference.

1.8 QUALITY ASSURANCE

A. Installer Qualifications: A qualified installer who employs on Project personnel qualified as ACI-certified Flatwork Technician and Finisher and a supervisor who is an ACI-certified Concrete Flatwork Technician.

B. Manufacturer Qualifications: A firm experienced in manufacturing ready-mixed concrete products and that complies with ASTM C 94/C 94M requirements for production facilities and equipment.

1. Manufacturer certified according to NRMCA's "Certification of Ready Mixed Concrete Production Facilities."

C. Testing Agency Qualifications: An independent agency as approved by Contract Officer qualified according to ASTM C 1077 and ASTM E 329 for testing indicated.

1. Personnel conducting field tests shall be qualified as ACI Concrete Field Testing Technician, Grade 1, according to ACI CP-1 or an equivalent certification program.

2. Personnel performing laboratory tests shall be ACI-certified Concrete Strength Testing Technician and

GJFO - Dinosaur Hill Site Improvements 03 30 00.00- 4 of 20

Concrete Laboratory Testing Technician, Grade I. Testing agency laboratory supervisor shall be an ACI-certified Concrete Laboratory Testing Technician, Grade II.

1.9 FIELD CONDITIONS

A. Cold-Weather Placement: Comply with ACI 306.1 and as follows. Protect concrete work from physical damage or reduced strength that could be caused by frost, freezing actions, or low temperatures.

1. When average high and low temperature is expected to fall below 40 deg F (4.4 deg C) for three successive days, maintain delivered concrete mixture temperature within the temperature range required by ACI 301 (ACI 301M).

2. Do not use frozen materials or materials containing ice or snow. Do not place concrete on frozen subgrade or on subgrade containing frozen materials.

3. Do not use calcium chloride, salt, or other materials containing antifreeze agents or chemical accelerators unless otherwise specified and approved in mixture designs.

B. Hot-Weather Placement: Comply with ACI 301 (ACI 301M) and ACI 305.1 (ACI 305.1M), and as follows:

1. Maintain concrete temperature below 90 deg F (32 deg C) at time of placement. Chilled mixing water or chopped ice may be used to control temperature, provided water equivalent of ice is calculated to total amount of mixing water. Using liquid nitrogen to cool concrete is Contractor's option.

2. Fog-spray forms, steel reinforcement, and subgrade just before placing concrete. Keep subgrade uniformly moist without standing water, soft spots, or dry areas.

C. Protect concrete from vandalism.

1. Vandalized concrete will not be accepted by Government.

2. Coordinate with Government to close site during curing as needed.

3. Closed site does not prevent all vandalism.

GJFO - Dinosaur Hill Site Improvements 03 30 00.00- 5 of 20

PART 2 - PRODUCTS

2.1 CONCRETE, GENERAL

A. ACI Publications: Comply with the following unless modified by requirements in the Contract Documents:

1. ACI 301 (ACI 301M).

2. ACI 117 (ACI 117M).

2.2 FORM-FACING MATERIALS

A. Smooth-Formed Finished Concrete: Form-facing panels that provide continuous, true, and smooth concrete surfaces.

Furnish in largest practicable sizes to minimize number of joints.

1. Plywood, metal, or other approved panel materials.

B. Rough-Formed Finished Concrete: Plywood, lumber, metal, or another approved material. Provide lumber dressed on at least two edges and one side for tight fit.

C. Forms for Cylindrical Columns, Pedestals, and Supports:

Metal, glass-fiber-reinforced plastic, paper, or fiber tubes that produce surfaces with gradual or abrupt irregularities not exceeding specified formwork surface class. Provide units with sufficient wall thickness to resist plastic concrete loads without detrimental deformation.

D. Pan-Type Forms: Glass-fiber-reinforced plastic or formed steel, stiffened to resist plastic concrete loads without detrimental deformation.

E. Form-Release Agent: Commercially formulated form-release agent that does not bond with, stain, or adversely affect concrete surfaces and does not impair subsequent treatments of concrete surfaces.

1. Formulate form-release agent with rust inhibitor for steel form-facing materials.

2.3 STEEL REINFORCEMENT

A. Reinforcing Bars: ASTM A 615/A 615M, Grade 60 (Grade 420), deformed.

GJFO - Dinosaur Hill Site Improvements 03 30 00.00- 6 of 20

B. Plain-Steel Wire: ASTM A 1064/A 1064M, as drawn.

2.4 REINFORCEMENT ACCESSORIES

A. Joint Dowel Bars: ASTM A 615/A 615M, Grade 60 (Grade 420), plain-steel bars, cut true to length with ends square and free of burrs.

B. Bar Supports: Bolsters, chairs, spacers, and other devices for spacing, supporting, and fastening reinforcing bars and welded-wire reinforcement in place. Manufacture bar supports from steel wire, plastic, or precast concrete according to CRSI's "Manual of Standard Practice," of greater compressive strength than concrete and as follows:

1. For concrete surfaces exposed to view, where legs of wire bar supports contact forms, use CRSI Class 1 plastic-protected steel wire or CRSI Class 2 stainless-steel bar supports.

2.5 CONCRETE MATERIALS

A. Source Limitations: Obtain each type or class of cementitious material of the same brand from the same manufacturer's plant, obtain aggregate from single source, and obtain admixtures from single source from single manufacturer.

B. Cementitious Materials:

1. Portland Cement: ASTM C 150/C 150M, Type I/II, Type III.

2. Fly Ash: ASTM C 618, Class F.

3. Slag Cement: ASTM C 989/C 989M, Grade 100 or 120.

4. Blended Hydraulic Cement: ASTM C 595/C 595M, Type IS, portland blast-furnace slag cement.

5. Silica Fume: ASTM C 1240, amorphous silica.

C. Normal-Weight Aggregates: ASTM C 33/C 33M, Class 3S coarse aggregate or better, graded. Provide aggregates from a single source.

1. Maximum Coarse-Aggregate Size: 1 inch (25 mm).

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

D. Air-Entraining Admixture: ASTM C 260/C 260M.

GJFO - Dinosaur Hill Site Improvements 03 30 00.00- 7 of 20

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

1. Water-Reducing Admixture: ASTM C 494/C 494M, Type A.

2. Retarding Admixture: ASTM C 494/C 494M, Type B.

3. Water-Reducing and Retarding Admixture:

ASTM C 494/C 494M, Type D.

4. High-Range, Water-Reducing Admixture:

ASTM C 494/C 494M, Type F.

5. High-Range, Water-Reducing and Retarding Admixture:

ASTM C 494/C 494M, Type G.

6. Plasticizing and Retarding Admixture:

ASTM C 1017/C 1017M, Type II.

F. Water: ASTM C 94/C 94M and potable.

2.6 FIBER REINFORCEMENT

A. Synthetic Micro-Fiber: Monofilament polypropylene micro-fibers engineered and designed for use in concrete, complying with ASTM C 1116/C 1116M, Type III, 1/2 to 1-1/2 inches

2.7 CURING MATERIALS

A. Evaporation Retarder: Waterborne, monomolecular film forming, manufactured for application to fresh concrete.

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

(305 g/sq. m) when dry.

C. Moisture-Retaining Cover: ASTM C 171, polyethylene film or white burlap-polyethylene sheet.

D. Water: Potable.

2.8 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, according to ACI 301

(ACI 301M).

GJFO - Dinosaur Hill Site Improvements 03 30 00.00- 8 of 20

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

B. Cementitious Materials: Use fly ash, pozzolan, slag cement, and silica fume as needed to reduce the total amount of portland cement, which would otherwise be used, by not less than 40 percent. Limit percentage, by weight, of cementitious materials other than portland cement in concrete as follows:

1. Fly Ash: 25 percent.

2. Combined Fly Ash and Pozzolan: 25 percent.

3. Slag Cement: 50 percent.

4. Combined Fly Ash or Pozzolan and Slag Cement: 50 percent portland cement minimum, with fly ash or pozzolan not exceeding 25 percent.

5. Silica Fume: 10 percent.

6. Combined Fly Ash, Pozzolans, and Silica Fume: 35 percent with fly ash or pozzolans not exceeding 25 percent and silica fume not exceeding 10 percent.

7. Combined Fly Ash or Pozzolans, Slag Cement, and Silica Fume: 50 percent with fly ash or pozzolans not exceeding 25 percent and silica fume not exceeding 10 percent.

C. Limit water-soluble, chloride-ion content in hardened concrete to 0.30.

D. Admixtures: Use admixtures according to manufacturer's written instructions.

1. Use water-reducing 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 and parking structure slabs, concrete required to be watertight, and concrete with a w/c ratio below 0.50.

4. Use corrosion-inhibiting admixture in concrete mixtures where indicated.

E. Color: If concrete is identified as colored on Contract Drawings, color concrete according to Section 03 35 50 Integrally Colored Concrete.

GJFO - Dinosaur Hill Site Improvements 03 30 00.00- 9 of 20

2.9 CONCRETE MIXTURES FOR BUILDING ELEMENTS

A. Slabs-on-Grade: Normal-weight concrete.

1. Minimum Compressive Strength: 4000 psi (27.6 MPa) at 28 days, or as specified in contract drawings.

2. Minimum Cementitious Materials Content: 520 lb/cu. yd.

(309 kg/cu. m)

3. Slump Limit: 5 inches

4. Air Content: 6 percent, plus or minus 1.5 percent at point of delivery for 1-inch (25-mm) 3/4-inch (19-mm) nominal maximum aggregate size.

5. Synthetic Micro-Fiber: Uniformly disperse in concrete mixture at manufacturer's recommended rate, but not less than a rate of 1.5 lb/cu. yd. (0.90 kg/cu. m).

2.10 FABRICATING REINFORCEMENT

A. Fabricate steel reinforcement according to CRSI's "Manual of Standard Practice."

2.11 CONCRETE MIXING

A. Ready-Mixed Concrete: Measure, batch, mix, and deliver concrete according to ASTM C 94/C 94M and ASTM C 1116/C 1116M, and furnish batch ticket information.

1. When air temperature is between 85 and 90 deg F (30 and 32 deg C), reduce mixing and delivery time from 1-1/2 hours to 75 minutes; when air temperature is above 90 deg F (32 deg C), reduce mixing and delivery time to 60 minutes.

PART 3 - EXECUTION

3.1 FORMWORK INSTALLATION

A. Design, erect, shore, brace, and maintain formwork, according to ACI 301 (ACI 301M), to support vertical, lateral, static, and dynamic loads, and construction loads that might be applied, until structure can support such loads.

GJFO - Dinosaur Hill Site Improvements 03 30 00.00- 10 of 20

B. Construct formwork so concrete members and structures are of size, shape, alignment, elevation, and position indicated, within tolerance limits of ACI 117 (ACI 117M).

C. Limit concrete surface irregularities, designated by ACI 347 as abrupt or gradual, as follows:

1. Class A, 1/8 inch (3.2 mm) for smooth-formed finished surfaces.

2. Class B, 1/4 inch (6 mm) for rough-formed finished surfaces.

D. Construct forms tight enough to prevent loss of concrete mortar.

E. Construct forms for easy removal without hammering or prying against concrete surfaces. Provide crush or wrecking plates where stripping may damage cast-concrete surfaces. Provide top forms for inclined surfaces steeper than 1.5 horizontal to 1 vertical.

1. Install keyways, reglets, recesses, and the like, for easy removal.

2. Do not use rust-stained steel form-facing material.

F. Set edge forms, bulkheads, and intermediate screed strips for slabs to achieve required elevations and slopes in finished concrete surfaces. Provide and secure units to support screed strips; use strike-off templates or compacting-type screeds.

G. Provide temporary openings for cleanouts and inspection ports where interior area of formwork is inaccessible. Close openings with panels tightly fitted to forms and securely braced to prevent loss of concrete mortar. Locate temporary openings in forms at inconspicuous locations.

H. Chamfer as shown on drawings exterior corners and edges of permanently exposed concrete.

I. Form openings, chases, offsets, sinkages, keyways, reglets, blocking, screeds, and bulkheads required in the Work.

Determine sizes and locations from trades providing such items.

J. Clean forms and adjacent surfaces to receive concrete.

Remove chips, wood, sawdust, dirt, and other debris just before placing concrete.

GJFO - Dinosaur Hill Site Improvements 03 30 00.00- 11 of 20

K. Retighten forms and bracing before placing concrete, as required, to prevent mortar leaks and maintain proper alignment.

L. Coat contact surfaces of forms with form-release agent, according to manufacturer's written instructions, before placing reinforcement.

3.2 REMOVING AND REUSING FORMS

A. General: Formwork for sides of beams, walls, columns, and similar parts of the Work that does not support weight of concrete may be removed after cumulatively curing at not less than 50 deg F (10 deg C) for 24 hours after placing concrete. Concrete has to be hard enough to not be damaged by form-removal operations, and curing and protection operations need to be maintained.

B. Clean and repair surfaces of forms to be reused in the Work.

Split, frayed, delaminated, or otherwise damaged form-facing material are not acceptable for exposed surfaces. Apply new form-release agent.

C. When forms are reused, clean surfaces, remove fins and laitance, and tighten to close joints. Align and secure joints to avoid offsets. Do not use patched forms for exposed concrete surfaces unless approved by Contract Officer.

3.3 STEEL REINFORCEMENT INSTALLATION

A. General: Comply with CRSI's "Manual of Standard Practice" for fabricating, placing, and supporting reinforcement.

1. Do not cut or puncture vapor retarder. Repair damage and reseal vapor retarder before placing concrete.

B. Clean reinforcement of loose rust and mill scale, earth, ice, and other foreign materials that reduce bond to concrete.

C. Accurately position, support, and secure reinforcement against displacement. Locate and support reinforcement with bar supports to maintain minimum concrete cover. Do not tack weld crossing reinforcing bars.

D. Set wire ties with ends directed into concrete, not toward exposed concrete surfaces.

GJFO - Dinosaur Hill Site Improvements 03 30 00.00- 12 of 20

E. Install welded-wire reinforcement in longest practicable lengths on bar supports spaced to minimize sagging. Lap edges and ends of adjoining sheets at least one mesh spacing.

Offset laps of adjoining sheet widths to prevent continuous laps in either direction. Lace overlaps with wire.

3.4 JOINTS

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

B. Construction Joints: Install so strength and appearance of concrete are not impaired, at locations indicated or as approved by Contract Officer.

1. Place joints perpendicular to main reinforcement.

Continue reinforcement across construction joints unless otherwise indicated. Do not continue reinforcement through sides of strip placements of floors and slabs.

2. Use a bonding agent at locations where fresh concrete is placed against hardened or partially hardened concrete surfaces.

3. Use epoxy-bonding adhesive at locations where fresh concrete is placed against hardened or partially hardened concrete surfaces.

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

1. Grooved Joints: Form contraction joints after initial floating by grooving and finishing each edge of joint to a radius of 1/8 inch (3.2 mm). Repeat grooving of contraction joints after applying surface finishes.

Eliminate groover tool marks on concrete surfaces.

2. Sawed Joints: Form contraction joints with power saws equipped with shatterproof abrasive or diamond-rimmed blades. Cut 1/8-inch- (3.2-mm-) wide joints into concrete when cutting action does not tear, abrade, or otherwise damage surface and before concrete develops random contraction cracks.

D. Isolation Joints in Slabs-on-Grade: 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.

GJFO - Dinosaur Hill Site Improvements 03 30 00.00- 13 of 20

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

2. Terminate full-width joint-filler strips not less than 1/2 inch (13 mm) or more than 1 inch (25 mm) 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.

3.5 CONCRETE PLACEMENT

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

B. Do not add water to concrete during delivery, at Project site, or during placement unless approved by Contract Officer.

C. 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. If a section cannot be placed continuously, provide construction joints as indicated. Deposit concrete to avoid segregation.

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

2. Consolidate placed concrete with mechanical vibrating equipment according to ACI 301 (ACI 301M).

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

Insert and withdraw vibrators vertically at uniformly spaced locations to rapidly penetrate placed layer and at least 6 inches (150 mm) into preceding layer. Do not insert vibrators into lower layers of concrete that have begun to lose plasticity. 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.

GJFO - Dinosaur Hill Site Improvements 03 30 00.00- 14 of 20

D. 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.

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

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

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

4. Slope surfaces uniformly to drains where required.

5. Begin initial floating using bull floats or darbies to form a uniform and open-textured surface plane, before excess bleedwater appears on the surface. Do not further disturb slab surfaces before starting finishing operations.

3.6 FINISHING FORMED SURFACES

A. Rough-Formed Finish: As-cast concrete texture imparted by form-facing material with tie holes and defects repaired and patched. Remove fins and other projections that exceed specified limits on formed-surface irregularities.

1. Apply to concrete surfaces not exposed to public view

B. Smooth-Formed Finish: As-cast concrete texture imparted by form-facing material, arranged in an orderly and symmetrical manner with a minimum of seams. Repair and patch tie holes and defects. Remove fins and other projections that exceed specified limits on formed-surface irregularities.

C. Related Unformed Surfaces: At tops of walls, horizontal offsets, and similar unformed surfaces adjacent to formed surfaces, strike off smooth and finish with a texture matching adjacent formed surfaces. Continue final surface treatment of formed surfaces uniformly across adjacent unformed surfaces unless otherwise indicated.

3.7 FINISHING FLOORS AND SLABS

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

GJFO - Dinosaur Hill Site Improvements 03 30 00.00- 15 of 20

B. Float Finish: Consolidate surface by hand floating.

Restraighten, cut down high spots, and fill low spots. Repeat float passes and restraightening until surface is left with a uniform, smooth, granular texture.

1. Apply float finish to surfaces

C. Broom Finish: Apply a broom finish to exterior concrete platforms, steps, ramps, and elsewhere as indicated.

1. Immediately after float finishing, slightly roughen trafficked surface by brooming with fiber-bristle broom perpendicular to main traffic route. Coordinate required final finish with Contract Officer before application.

D. Stamped Finish: Apply stamped finish to floor and slab surfaces identified as stamped on Contract Drawings according to Section 03 35 33.00

3.8 CONCRETE PROTECTING AND CURING

A. General: Protect freshly placed concrete from premature drying and excessive cold or hot temperatures. Comply with ACI 306.1 for cold-weather protection and ACI 305.1 (ACI 305.1M) for hot-weather protection during curing.

B. Evaporation Retarder: Apply evaporation retarder to unformed concrete surfaces if hot, dry, or windy conditions cause moisture loss approaching 0.2 lb/sq. ft. x h (1 kg/sq. m x

h) before and during finishing operations. Apply according to manufacturer's written instructions after placing, screeding, and bull floating or darbying concrete, but before float finishi

C. Cure concrete flatwork according to ACI 308.1, by one or a combination of the following methods:

1. Moisture Curing: Keep surfaces continuously moist for not less than seven days with the following materials:

a. Water.

b. Continuous water-fog spray.

c. Absorptive cover, water saturated, and kept continuously wet. Cover concrete surfaces and edges with 12-inch (300-mm) lap over adjacent absorptive covers.

GJFO - Dinosaur Hill Site Improvements 03 30 00.00- 16 of 20

2. Moisture-Retaining-Cover Curing: Cover concrete surfaces with moisture-retaining cover for curing concrete, placed in widest practicable width, with sides and ends lapped at least 12 inches (300 mm), and sealed by waterproof tape or adhesive. Cure for not less than seven days. Immediately repair any holes or tears during curing period, using cover material and waterproof tape.

a. Moisture cure or use moisture-retaining covers to cure concrete surfaces to receive floor coverings.

b. Moisture cure or use moisture-retaining covers to cure concrete surfaces to receive penetrating liquid floor treatments.

c. Cure concrete surfaces to receive floor coverings with either a moisture-retaining cover or a curing compound that the manufacturer certifies does not interfere with bonding of floor covering used on Project.

3. Curing Compound: Apply uniformly in continuous operation by power spray or roller according to manufacturer's written instructions. Recoat areas subjected to heavy rainfall within three hours after initial application.

Maintain continuity of coating and repair damage during curing period.

a. Removal: After curing period has elapsed, remove curing compound without damaging concrete surfaces by method recommended by curing compound manufacturer unless manufacturer certifies curing compound does not interfere with bonding of floor covering used on Project.

3.9 JOINT FILLING

A. Prepare, clean, and install joint filler according to manufacturer's written instructions.

1. Do not fill joints until construction traffic over concrete has permanently ceased.

B. Remove dirt, debris, saw cuttings, curing compounds, and sealers from joints; leave contact faces of joints clean and dry.

C. Install semirigid joint filler full depth in saw-cut joints and at least 2 inches (50 mm) deep in formed joints. Overfill

GJFO - Dinosaur Hill Site Improvements 03 30 00.00- 17 of 20 joint and trim joint filler flush with top of joint after hardening.

3.10 CONCRETE SURFACE REPAIRS

A. Defective Concrete: Repair and patch defective areas when approved by Contract Officer. Remove and replace concrete that cannot be repaired and patched to Contract Officer's approval.

B. Patching Mortar: Mix dry-pack patching mortar, consisting of 1 part portland cement to 2-1/2 parts fine aggregate passing a No. 16 (1.18-mm) sieve, using only enough water for handling and placing.

C. Repairing Formed Surfaces: Surface defects include color and texture irregularities, cracks, spalls, air bubbles, honeycombs, rock pockets, fins and other projections on the surface, and stains and other discolorations that cannot be removed by cleaning.

1. Immediately after form removal, cut out honeycombs, rock pockets, and voids more than 1/2 inch (13 mm) in any dimension to solid concrete. Limit cut depth to 3/4 inch (19 mm). Make edges of cuts perpendicular to concrete surface. Clean, dampen with water, and brush-coat holes and voids with bonding agent. Fill and compact with patching mortar before bonding agent has dried. Fill form-tie voids with patching mortar or cone plugs secured in place with bonding agent.

2. Repair defects on surfaces exposed to view by blending white portland cement and standard portland cement so that, when dry, patching mortar matches surrounding color. Patch a test area at inconspicuous locations to verify mixture and color match before proceeding with patching. Compact mortar in place and strike off slightly higher than surrounding surface.

3. Repair defects on concealed formed surfaces that affect concrete's durability and structural performance as determined by Contract Officer.

D. Repairing Unformed Surfaces: Test unformed surfaces, such as floors and slabs, for finish and verify surface tolerances specified for each surface. Correct low and high areas. Test surfaces sloped to drain for trueness of slope and smoothness; use a sloped template.

GJFO - Dinosaur Hill Site Improvements 03 30 00.00- 18 of 20

1. Repair finished surfaces containing defects. Surface defects include spalls, popouts, honeycombs, rock pockets, crazing and…