Amphitheater Recreation Site Restroom Installation Specifications.pdf

SPECIFICATIONS

FOR

CORONADO NATIONAL FOREST

AMPHITHEATER RECREATION SITE

RESTROOM INSTALLATION

March 13, 2023 ii iii

TABLE OF CONTENTS

DIVISION 1 – GENERAL REQUIREMENTS

01010 - SCOPE OF WORK

1.1 – Definitions

1.2 – Description

1.3 – Location and Conditions

1.4 – Schedule

1.5 – Contract Administration

1.6 – Quality of Work

1.7 – Codes and Standards

1.8 – Special Construction Requirements

1.9 – Contract Closeout

01020 – MEASUREMENT & PAYMENT

1.1 – Measurement & Payment

01030 – CONSTRUCTION STAKING

1. 1 – Scope

3. 1 – General

01040 - MOBILIZATION

1.1 – Summary

01050 – SUBMITTALS

1.1 – General

2.1 – Description

2.2 – Products

01060 – QUALITY CONTROL

1.1 – General

DIVISION 2 – SITE WORK

02010 – DEMOLITION AND CLEARING

1.1 – Description

2.1 – Not Used

3.1 – Preparation iv

3.2 – Protection

3.3 – Clearing

3.4 – Removal

02020 – EARTHWORK

1.1 – Description

2.1 – Fill Materials

3.1 – Preparation

3.2 – Excess Water Control

3.3 – Compaction

3.4 – Finish Grading

02030 – SURFACING

1.1– Description

1.2 – Related Specifications

1.3 – Quality Assurance

1.4 – Submittals

1.5 – Dust Control

2.1 – Materials

3.1 – Preparation

3.2 – Clean Up

02040 – FINISH GRADING

1.1– Description

1.2 – Site Conditions

2.1 – Materials

3.1 – Preparation

3.2 – Excess Water Control

3.3 – Finish Grading

02050 – AGGREGATE BASE

1.1– Description

1.2 – Submittals

1.3 – Quality Assurance

2.1 – Aggregate

3.1 – Placing v

3.2 – Mixing

3.3 – Compaction

3.4 – Surface Finishing

3.5 – Material Acceptance Requirements

3.6 – Tolerances

3.7 – Maintenance

DIVISION 3 – CONCRETE

03000 – PORTLAND CEMENT CONCRETE

1.1 - Summary

1.2 – References

1.3 – Submittals

1.4 – Quality Assurance

1.5 – Environmental Requirements

2.1 – Form Materials

2.2 – Concrete Materials

2.3 – Accessories

2.4 – Concrete Mix

3.1 – Examination

3.2 – Preparation

3.3 – Forming

3.4 – Placing Concrete

3.5 – Joints

3.6 – Finishing

3.7 – Tolerances

3.8 – Field Quality Control

3.9 – Protection

03010 –CONCRETE FORMWORK

1.1 - Summary

1.2 – References

1.3 – Design Requirements

1.4 – Quality Assurance

1.5 – Qualifications vi

1.6 – Regulatory Requirements

1.7 – Delivery, Storage, And Handling

1.8 – Coordination

2.1 – Wood Form Materials

2.2 – Prefabricated Forms

2.3 – Formwork Accessories

3.1 – Examination

3.2 – Erection Formwork

3.3 – Form Release Agent Application

3.4 – Inserts, Embedded Parts And Openings

3.5 – Form Cleaning

3.6 – Formwork Tolerances

3.7 – Field Quality Control

3.8 – Form Removal

03020 –CONCRETE REINFORCEMENT

1.1 - Summary

1.2 – References

1.3 – Submittals

1.4 – Quality Assurance

1.5 – Coordination

2.1 – Reinforcement

2.2 – Accessory Materials

2.3 – Fabrication

3.1 – Placement

03030 – CAST-IN-PLACE CONCRETE

1.1 - Summary

1.2 – Quality Assurance

1.3 – Submittals

2.1 –Materials

2.2 – Mixes

3.1 – Subgrade Preparation

3.2 – Preparation For Concrete Placement vii

3.3 – Formwork

3.4 – Reinforcement

3.5 – Accessory Materials

3.6 – Joints

3.7 – Placing Concrete

3.8 – Hot Weather Requirements

3.9 – Cold Weather Requirements

3.10 – Removal of Forms

3.11 – Finishing

3.12 – Cement Mortar

3.13 – Curing

3.14 – Defective Materials And Concrete

3.15 – Protection Of Completed Work

3.16 – Cleaning

DIVISION 10 – SPECIALTIES

10000 – RESTROOM

1.1 – Summary

1.2 – Submittals

1.3 – Quality Assurance

1.4 – Delivery, Storage, and Handling

1.5 – Delivery, Storage, and Handling

2.1 – Restroom

3.1 – Preparation

3.2 – Installation

10010 – TRASH BINS

1.1 – Summary

1.2 – Submittals

1.3 – Delivery, Storage, and Handling

2.1 – Trash Bin

3.1 – Preparation

3.2 – Installation

DIVISION 1 – GENERAL REQUIREMENTS

01010 - SCOPE OF WORK

PART 1 – GENERAL

1.1 – Definitions

Contractor – the successful bidder who is awarded the contract.

Government – the Contracting Officer (CO) or designated Contracting Officer’s Representative (COR) of the Coronado National Forest.

1.2 – Description

Contractor shall furnish all materials, equipment, transportation, labor, supervision, and other associated work necessary to complete work according to the Drawings and Specifications.

The Amphitheater Recreation Site is heavily visited throughout the year. Currently there is no restroom on site.

Scope of work includes:

• Supply and Install 1-seat CXT vault restroom.

• Supply and Install one bearproof trash bin.

1.3 – Location and Conditions

Work will take place at the Amphitheater Recreation Site located in Madera Canyon on the Nogales Ranger District within Santa Cruz County, Arizona. The site is approximately 40 miles southeast of downtown Tucson. The site may be accessed traveling south on I-19 to Exit 63. Heading east on Continental Rd and following signs to Madera Canyon Recreation Area and on to the Forest, approximately 13-½ miles. Legal description: Township 20S, Range 14E, and Section 2. The coordinates for the site are Latitude: 31.722126° and the Longitude: -110.879646°.

It will be the Contractor’s responsibility to familiarize themselves with the existing conditions and notify the Government of any discrepancies shown in these documents.

For delivery of materials and other construction-related items, the Contractor shall coordinate with Contracting Officers Representative (COR) and is advised to determine safe vehicle lengths and load limits for roads that access the site.

1.4 – Schedule

A pre-work meeting for clarification of the project will be held if needed or desired by either the contractor or the Government.

A schedule for all work must be submitted to and approved by the Government prior to construction beginning.

The Contractor shall notify the Forest Service three (3) days in advance of any survey work and seven (7) days in advance of any construction work.

All work shall be completed within 60 days of award.

1.5 – Contract Administration

The Contractor shall be fully responsible for seeing that construction activities conform to the approved final drawings and specifications and according to provisions of this contract.

The Government will provide timely reviews as requested by the Contractor and may periodically review work at any time.

Construction quality control shall include supplying all the personnel, equipment, and documentation necessary to ensure that construction is completed in compliance with the drawings and specifications and provisions of the contract.

The Contractor shall not disturb plants, soil, or other site features except within the areas necessary to complete the work. The Contractor shall clearly stake limits of construction and maintain marks throughout construction. The Government will review all staking.

1.6 – Quality of Work

The products listed in the specifications are preferred products chosen for building compatibility and quality. However, equal or better alternatives submitted by the Contractor will be considered and are encouraged.

Use recovered materials, recyclable materials, and environmentally preferable products and services where possible as per Executive Order 13423.

1.7 – Codes and Standards

Codes and standards of the following associations and listed publications will become part of this contract:

1. International Building Code (IBC)

2. American Concrete Institute (ACI)

3. National Electrical Code (NEC)

4. International Mechanical Code (IMC)

5. International Fire Code (IFC)

6. Americans with Disability Act Standards (ADA) for Accessible Design

7. Occupational Health and Safety Administration (OSHA) Standards

8. American Society for Testing and Materials (ASTM)

9. American National Standards Institute (ANSI)

10. Standardized Specifications for Paints and Coatings (SSPC)

11. International Organization for Standardization (ISO)

12. National Sanitary Foundation (NSF)

13. Arizona Department of Transportation Structures Section Standard Drawings (ADOT B-Standards)

All materials, workmanship, and designs shall meet specified requirements of the standards referenced in this section and other local or state codes, related to this type of work, whichever is more stringent.

If a particular item is not covered by a standard, it shall be proven by certified test by a reputable laboratory to be capable of performing satisfactorily, at no additional cost to the Government.

1.8 – Special Construction Requirements

Upon completion of the project, all demolished improvements and other construction materials shall be removed from Government land and disposed of in accordance with State and County standards.

All site features to remain shall be protected from damage during the project. Any damage to site features shall be repaired to their original condition at the cost of the Contractor.

Protect trees and large vegetation to remain. No live trees are to be cut unless designated on the drawings. Dead trees and stumps may be removed. Tree limbs may be trimmed as necessary.

Construction Access and Protection: The Contractor shall be responsible for securing the project area from the public and government personnel. This includes providing the necessary security for protection of the Contractor's materials, equipment, tools and work until final acceptance by the Government. The Contractor shall also provide sufficient signs, barriers, barricades, markers, etc. to warn of hazardous conditions and to protect people from injury.

Equipment and Material Storage: The Contractor shall obtain permission from the Government for equipment and material storage, and for other areas needed for construction.

Utilities: Electricity and water are NOT AVAILABLE on site.

Sanitation/Garbage: The Contractor may use existing Forest Service restrooms at nearby recreation sites. No garbage service is available for Contractor use. The Contractor shall keep the construction site free of loose garbage at all times.

1.9 – Contract Closeout

Remove temporary facilities and provide final cleaning and touch-up. Restore portions of buildings, site improvements, landscaping, and other items damaged by construction operations to the satisfaction of the Government at no additional expense to the Government.

*** END OF SPECIFICATION 01010 ***

01020 – MEASUREMENT & PAYMENT

1.1 – Measurement & Payment

Measurement and payment for contract work will be made only for and under those pay items included in the SCHEDULE OF ITEMS. All other work and materials will be considered incidental to the completion of the items shown and no separate payment will be made.

*** END OF SPECIFICATION 01020 ***

01030 – CONSTRUCTION STAKING

1. 1 – Scope

This section specifies construction staking required for all construction needs.

PART 2 – PRODUCTS

None.

PART 3 – EXECUTION

3. 1 – General

The Contractor shall set all flagging, stakes, nails and string lines etc. necessary to construct a complete project as SHOWN ON THE DRAWINGS. The Contractor is responsible for verifying any existing control points shown on the plans. The Contractor shall be responsible for maintaining all staking and for replacing any stakes lost or destroyed during their use period. Construction work shall not begin on an item until the staking for that item has been approved by the Government. This approval will not relieve the Contractor of the responsibility and the associated costs for correcting any errors, whether the errors are discovered during the performance of the survey or during subsequent phases of the project.

***END OF SPECIFICATION 01030***

01040 - MOBILIZATION

1.1 – Summary

Section Includes: Preparatory work and operations, including those necessary to the movement of personnel, equipment, supplies and incidentals to the project site; and for other work and operations which must be performed, or costs incurred prior to beginning work on the various items on the project site. This specification does not include moves between project sites.

***END OF SPECIFICATION 01040***

01050 – SUBMITTALS

PART 1 – REQUIREMENTS

1.1 – General

It will be the Contractor's responsibility to submit all items with such promptness as to cause no delay in the work. Approvals must be obtained before starting work which involves the item. Contractor shall allow 5 days for processing of submittals by the Government. Submittals may also be referred to as shop drawings.

PART 2 – MANUFACTURER’S LITERATURE AND SHOP DRAWINGS

2.1 – Description

The Contractor shall submit one copy of all submittals to the Government for approval on the items required herein. For each submittal, the Contractor must receive written approval from the Government to use the item before incorporating it into the project work. Literature must be marked or otherwise designated to show the exact model, size, etc. the Contractor proposes to use. Information must be adequate to determine compliance with the specifications. Approvals must be received for products differing from those described in the Government-supplied specifications.

Submittals will be waived if the Contractor furnishes the exact item used for design when the manufacturer's model, size, etc. are shown in the contract.

2.2 – Products

Certificates of compliance are required for the following:

1. Concrete.

2. Rebar.

3. Aggregate.

4. CXT Restroom.

5. Trash Bin.

***END OF SPECIFICATION 01050***

01060 – QUALITY CONTROL

PART 1 – DESCRIPTION

1.1 – General

This work shall consist of providing quality control in conformance with the inspection of construction provisions of this contract to ensure compliance with the drawings, specifications, and provisions of the contract. The contractor shall provide all personnel, equipment, tests, and reports necessary to meet the requirements of this specification.

PART 2 – CONSTRUCTION

The Contractor shall provide and maintain a quality control system that will ensure that all services, supplies, and construction required under this contract conform to the contract requirements. The Contractor shall perform, or cause to be performed, the sampling, inspection, and testing required to substantiate that all supplies, services, and construction conform to the contract requirements.

A. Quality Control Plan

The Contractor shall submit the following in writing:

a. Authorities and responsibilities of inspection and testing personnel.

b. Experience and qualifications of inspection and testing personnel to be assigned and name and location of any (for hire) testing facility to be used.

B. Approval of Quality Control Plan

The Contractor's proposed quality control plan for all items requiring quality control shall be submitted to the Government for review prior to the Contractor commencing work. Within 5 days of receipt of plan, the Government shall notify the Contractor whether the plan adequately covers quality control requirements.

Construction work shall not be performed prior to Contractor's receipt of written approval of the proposed plan. The Contractor shall submit to the Government, in writing, any proposed changes in the approved quality control plan. Proposed changes shall not be put into effect until approved in writing by the Government.

The Contractor shall provide and maintain appropriate measuring and testing devices, equipment, and supplies to accomplish the required measurement, testing, and inspection in a timely manner. Tests, measurements, and certifications shall be made as required by the drawings and specifications. The Contractor shall take samples and perform inspections and tests necessary to achieve the quality of construction required by the contract.

C. Inspection and Tests

The Contractor shall maintain current records of all inspections and tests performed. The following format or one containing the following information will be acceptable to the Government:

Project Name Contract No Performed By

Item Test Date Location Standard Results Initials

D. As-Built Drawings

The Contractor shall maintain a set of the contract drawings depicting as-built conditions. These drawings shall be maintained in a current condition and shall be available for review. All variations from contract drawings shall be indicated in red on the drawings. Upon completion of the contract work, as-built drawings shall be submitted to the Government.

E. Frequencies for making approvals, inspecting, sampling and testing shall be as shown in Table 1400-1. Responsibilities shall be as shown in Table 1400-1. The following key refers to the abbreviations shown in Table 1400-1:

a. CC: Certification and/or inspection, sampling, and testing by Contractor, or Contractor's representative.

b. CL: Approvals, inspections, sampling, testing or measuring under the direction of and certification by a qualified employee of a certified lab or by a Registered Professional Engineer in the state of Arizona. The Contractor shall be responsible for furnishing the Professional services as shown in Table 1400-1.

TABLE 1400-1

QUALITY CONTROL, INSPECTION, SAMPLING, TESTING, AND MEASUREMENTS

Item

Approvals, inspections, sampling, minimum or tests required

Frequency

Certification

Fill Compaction test 1 total CL

Aggregate base Compaction test 1 total CL

Concrete Cylinder set 1 CL

Air entertainment test 1 CL

Slump 1 CL

***END OF SPECIFICATION 01060***

***END OF DIVISION 1***

DIVISION 2 – SITE WORK

02010 – DEMOLITION AND CLEARING

1.1 – Description

Comply with site-specific landscape and hardscape demolition requirements found in other sections and Drawings. The work shall consist of the following:

A. Removal asphaltic pavement.

B. Removal of surface debris and vegetation.

PART 2 – PRODUCTS

2.1 – Not Used

PART 3 – EXECUTION

3.1 – Preparation

A. Coordinate removal work with the Government.

B. Verify that existing plants designated to remain are identified and protected. Mark all trees to remain in a manner that indicates pre-demolition ground level and use marking system that does not damage trees to be so marked.

3.2 – Protection

A. Protect plants and features not required to be removed by construction activities.

B. Protect existing structures and features not required to be removed by construction from damage or displacement.

3.3 – Clearing

A. Do not remove any trees unless approved by the government.

B. If any archaeological artifacts or evidence is encountered, notify the Government and halt work in the area immediately.

3.4 – Removal

A. All construction debris, extracted plant life, facilities and materials scheduled for demolition must be completely removed off Government lands and disposed of legally by the Contractor.

B. The Contractor shall perform the work as shown on the drawings.

C. The Contractor shall be responsible for removal, equipment, containment, cleanup, and associated costs necessary for removing and salvaging items shown on the plans.

D. Fill all holes and restore grades wherever facilities or extracted plant life are removed.

E. Sawcut asphalt to be removed at joints as directed by Government.

***END OF SPECIFICATION 02010***

02020 – EARTHWORK

1.1 – Description

Supply and place fill material as required for finished grading around new toilet buildings.

Utilize site excavation prior to importing material for required fill operations.

PART 2 – PRODUCTS

2.1 – Fill Materials

A. Satisfactory Soils: ASTM D 2487 soil classification groups GW, GP, GM, SW, SP, and SM or a combination of these group symbols; free of rock or gravel larger than 3 inches in any dimension, debris, waste frozen materials, vegetation, and other deleterious matter.

B. Other acceptable fill material: Crushed aggregate, conforming to the requirements of AASHTO M147, Grade D.

A. The Contractor shall familiarize himself with all site conditions prior to the start of work and shall notify the Government of any discrepancies found between site conditions and the contract documents.

B. Scheduling:

a. Schedule all work in a careful manner with all necessary consideration for the public.

b. Avoid interference with the use of, and access to adjacent facilities.

3.2 – Excess Water Control

A. Finish grading operations shall be performed during dry weather. Soil shall not be in a wet condition.

B. All standing water shall be promptly removed. Finish grading shall not resume until conditions and approved by the Government.

C. The Contractor shall be responsible for positive drainage of all areas of work.

3.3 – Compaction

A. Compacted fill and backfill shall be placed with suitable equipment in horizontal layers not to exceed 9 inches in depth for rubber tired or vibratory rollers, 6 inches for tamping rollers and 4 inches when mechanical tampers are used.

B. Before placing fill material, surfaces to receive compacted fill shall be cleared of all existing obstructions and vegetation debris. All foundation surfaces to receive fill shall be smoothed, scarified and compacted to 95% of maximum density as determined in accordance with ASTM D 698 for a depth of at least 12 inches using approved compaction equipment.

C. Each layer of compacted fill shall be compacted to not less than 95 percent of maximum density when tested in accordance with ASTM D 698.

D. Aggregate shall be compacted a minimum of 95% of maximum density as determined by AASHTO T180-74 Method D.

3.4 – Finish Grading

A. Fine grade all areas, eliminating rough and low areas. Maintain levels, profiles, and contours to subgrades. Maintain positive drainage away from the structure.

B. Remove all stones, roots, grass, weeds, and other foreign material while finish grading. Remove and dispose legally of all debris.

***END OF SPECIFICATION 02020***

02030 – SURFACING

1.1– Description

Work as evident on drawings and specified herein or required to accomplish the removal, replacement and installation of miscellaneous surfacing materials as required to comply with the construction drawings.

1.2 – Related Specifications

A. Pima County/City of Tucson (PC/COT) Standard Specifications and Details for Public Improvements (2003 Edition), hereafter referenced as PC/COT.

B. Pima County Wastewater Management Department, Manual of Engineering Standards and Procedures.

C. Tucson Water's Standard Waterworks Specifications and Details.

1.3 – Quality Assurance

Codes, Standards: Standard Details and Materials Standards as referenced herein.

1.4 – Submittals

A. Mix Designs: The Contractor shall submit a mix design for the following materials to the Government for review and approval:

a. Portland Cement Concrete, one submittal for each class of concrete utilized.

b. Asphaltic Concrete, one submittal for each mix of asphaltic concrete utilized.

1.5 – Dust Control

The Contractor shall maintain adequate dust control at all times by sprinkling with water or other approved methods. Any and all claims for dust damage and nuisance to persons or property shall be borne solely by the Contractor

PART 2 – PRODUCTS

2.1 – Materials

A. Portland Cement Concrete (PCC) shall conform to PC/COT Standard Specification No. 1006 and the class specified.

B. Aggregate Base Course shall conform to PC/COT Standard Specification No. 303.

C. Joint Material shall conform to PC/COT Standard Specification 1011.

D. Hot Bituminous Mix shall conform to PC/COT Standard Spec 406 Residential #2.

PART 3 – EXECUTION

3.1 – Preparation

A. Subsurface shall be completed and approved by the COR before placing base or surface course.

3.2 – Clean Up

A. Clean all foreign material from finish surfaces.

B. Dispose of all debris, unsalvageable material and all other unsuitable material in accordance with all governing rules and regulations.

***END OF SPECIFICATION 02030***

02040 – FINISH GRADING

1.1– Description

Work included is this section entails soil preparation for raked areas, naturalizing grades where buildings and associated facilities are removed, and backfill along concrete slab edges.

1.2 – Site Conditions

Comply with all local regulations for dust control.

PART 2 – PRODUCTS

2.1 – Materials

Refer to other sections and plans.

PART 3 – EXECUTION

3.1 – Preparation

A. The Contractor shall familiarize himself with all site conditions prior to the start of work, and shall notify the Government of any discrepancies found between site conditions and the contract documents.

B. Scheduling:

a. Schedule all work in a careful manner with all necessary consideration for the public.

b. Avoid interference with the use of, and access to adjacent facilities.

3.2 – Excess Water Control

A. Finish grading operations shall be performed during dry weather. Soil shall not be in a wet condition.

B. All standing water shall be promptly removed. Finish grading shall not resume until conditions and approved by the Government.

C. The Contractor shall be responsible for positive drainage of all areas of work.

3.3 – Finish Grading

A. Fine grade all areas, eliminating rough and low areas. Maintain levels, profiles and contours to subgrades.

B. Remove all stones, roots, grass, weeds and other foreign material while finish grading. Remove and dispose legally of all debris.

C. Backfill along all concrete edges so that none protrude over 1/2" above surrounding grade. Fill slopes shall be 4:1 or flatter (unless shown otherwise on drawings) with a 1’ flat compacted aggregate shoulder adjacent to the pavement unless shown otherwise on the plans.

***END OF SPECIFICATION 02040***

02050 – AGGREGATE BASE

1.1– Description

The work of this section consists of furnishing and placing aggregate, and filler if required, on a prepared subgrade.

1.2 – Submittals

A. Two copies of certified weight tickets for each load of aggregate delivered to project site.

B. If materials are obtained from a commercial source, submit certification from the supplier certifying that aggregate base course meets the requirements of this section.

C. Submit all Material and Compaction Test results directly to both CO and COR from testing services, with copy to Contractor.

1.3 – Quality Assurance

A. Material Test and Compaction Test to be the responsibility of the Contractor.

PART 2 – PRODUCTS

2.1 – Aggregate

A. Clean, hard, durable fragments or particles of crushed stone, crushed slag, or crushed or natural gravel. Materials that break up due to freeze-thaw or wet-dry cycling shall not be used.

B. Coarse Aggregate: AASHTO T96- 77, percentage of wear of not more than 50.

C. Fraction passing No. 40 sieve shall have a liquid limit not to exceed 25 and a plasticity index of not more than six, as detained by AASHTO T89-81 and 0-81, respectively.

D. Material, inclusive of filler, shall meet following screen analysis requirements by weight:

SIEVE DESIGNATION PERCENT PASSING

1-½" 100

1" 80-100

No.4 35-75

No.40 10-30

No.200 0-10

3.1 – Placing

If the required compacted depth of the aggregate base course exceeds six inches, place course in two or more layers of approximately equal thickness. The maximum compacted thickness of anyone layer will not exceed six inches.

3.2 – Mixing

Mix the aggregate by anyone of the three following methods:

A. Stationary Plant Method: Mix aggregate base course and appropriate amount of water for compaction in an approved mixer. After mixing, transport aggregate to the job site while it contains the proper moisture content and place on the roadbed with an approved aggregate spreader. Before compaction, remove excess moisture.

B. Travel Plant Method: After the material for each layer has been placed through an aggregate spreader or windrow-sizing device, it shall be uniformly mixed by a traveling mixing plant.

C. Road Mix Method: After placing each layer, mix materials at optimum moisture content using motor graders or other approved equipment until the moisture is uniform throughout.

3.3 – Compaction

Compact each layer to a density of not less than 95 percent of the maximum density, as determined by AASHTO T180- 74, Method D. Test density in-place, in accordance with AASHTO T191-61, T205-64, or other recognized method. Density tests to be performed at the rate of one test per lift per 2,500 square feet.

3.4 – Surface Finishing

A. Use a smooth steel wheel roller for the final rolling of top surface base course.

Water surface and evenly spread loose stones before final rolling. Make minimum of two complete passes over area to embed stones. Correct soft spots developed during rolling.

B. Compacted base course surface shall be smooth and free from waves and other irregularities. Unsatisfactory portions of base course shall be tom up, reworked, re-laid, and re-rolled, at no additional expense to Government.

3.5 – Material Acceptance Requirements

Acceptance will be based on periodic samples and tests taken following mixing and before laying/placing.

3.6 – Tolerances

A. Surface: Contractor will test finished surface of the base course with a 10-foot straightedge or other device. The variation between any two contacts with the surface shall not exceed one-half inch. Any areas not complying with these tolerances shall be reworked to obtain conformity.

B. Width: Plan dimension, plus or minus two inches.

C. Thickness: Plan dimension, plus or minus one-half inch.

3.7 – Maintenance

Maintain base course in a satisfactory condition until surfaced or until final acceptance.

***END OF SPECIFICATION 02050***

*** END DIVISION 2 ***

DIVISION 3 – CONCRETE

03000 – PORTLAND CEMENT CONCRETE

1.1 - Summary

This Section includes cement concrete pavement for the following applications:

A. Driveways and roadways.

B. Parking lots.

C. Curbs and gutters.

D. Walkways, sidewalks and slabs.

E. Pavement – marking paint.

F. Wheel stops

1.2 – References

A. ACI 304 – Recommended Practice for Measuring, Mixing, Transporting and Placing Concrete.

B. ASTM C33 – Concrete Aggregates.

C. ASTM C94 – Ready Mix Concrete.

D. ASTM C150 – Portland Cement.

E. ASTM C260 – Air-Entraining Admixtures for Concrete.

F. ASTM C309 – Liquid Membrane-Forming Compounds for Curing Concrete.

G. ASTM C494 – Chemical Admixtures for Concrete.

H. ASTM D1751 – Preformed Expansion Joint Fillers for Concrete Paving and Structural Construction.

I. ASTM D1752 – Preformed Sponge Rubber and Cork Expansion Joint Fillers for Concrete Paving and Structural Construction.

J. PC/COT 601-3.03 – Pima County/City of Tucson Standard Specifications for Public Improvements - Placing Concrete.

1.3 – Submittals

Product Data.

1.4 – Quality Assurance

A. Perform work in accordance with ACI 301 and PC/COT Standard Specification 908.

B. Obtain cementitious materials from same source throughout.

1.5 – Environmental Requirements

Do not place concrete when base surface temperature is less than 40°F, or surface is wet or frozen.

PART 2 – PRODUCTS

2.1 – Form Materials

Wood or steel form material, profiled to suit conditions.

2.2 – Concrete Materials

As specified in Section 03030 Cast-in-Place Concrete

2.3 – Accessories

A. Curing Compound: AASHTO M148 (ASTM C309), Type 1, Class A.

B. Joint Fillers: 1/2-inch preformed strips conforming to the requirements of Pima County/City of Tucson Standard Specification 1011.

2.4 – Concrete Mix

A. Mix concrete in accordance with ACI 304. Deliver concrete in accordance with

ASTM C94.

B. Select proportions for normal weight concrete.

C. Provide concrete to the following criteria:

a. Compressive Strength: 3,000 psi at 28 days.

b. Slump: 3 inches.

c. Air entrainment: 3-5%.

D. Use accelerating admixtures in cold weather only when approved by the Government. Use of admixtures will not relax cold weather placement requirements.

E. Use calcium chloride only when approved by the Government.

F. Use set retarding admixtures during hot weather only when approved by the Government.

PART 3 – EXECUTION

3.1 – Examination

A. Verify base conditions under provisions of Section 02020.

B. Verify gradients and elevations of base are correct.

3.2 – Preparation

A. Moisten base to minimize absorption of water from fresh concrete.

B. Notify the Government minimum 24 hours prior to commencement of concreting operations.

3.3 – Forming

A. Place and secure forms to correct location, dimension, profile, and gradient.

B. Assemble formwork to permit easy stripping and dismantling without damaging concrete.

C. Place joint filler vertical in position, in straight lines. Secure to formwork during concrete placement.

3.4 – Placing Concrete

Place concrete in compliance with Standard Specifications. As specified in Section 03030 Cast-in-Place Concrete and/or PC/COT Standard Specifications for Public Improvements Section 601-3.03.

3.5 – Joints

A. General: Construct expansion, weakened-plane (contraction) and construction joints true-to-line with face perpendicular to surface of concrete. Construct transverse joints at right angles to the center line, unless otherwise indicated.

Locate joints as shown on the foundation plan or, if not shown, divide concrete slabs into maximum 12-foot sections in both directions not to exceed a ratio of 4:5, as approved by the Government.

B. Weakened-Plane (Contraction) Joints: Provide weakened-plane (contraction) joints, if shown on foundation plan. Construct weakened-plane joints for a depth equal to at least 1/4 concrete thickness as follows:

a. Saw-Cut Joints: Saw cuts should be made 12 to 24 hours after finishing. Cut to a depth of 2", clean groove of loose debris.

b. Construction Joints: Place concrete joints at the end of pours and at locations where placement operations are stopped for a period of more than 1/2 hour, except where such pours terminate at expansion joints.

c. Expansion Joints: Provide pre-molded joint filler for expansion joints, in sidewalks and abutting concrete curbs, catch basins, manholes, inlets, structures, walks and other fixed objects, unless otherwise indicated.

Depress joint filler 1/2 inch below surface where joint sealer is required.

3.6 – Finishing

A. Walkways, sidewalks, and slabs: Medium Broom Finish.

B. Parking Space: Heavy Broom Finish.

C. Place curing compound on exposed concrete surfaces immediately after finishing.

Apply in accordance with manufacturer's instructions.

3.7 – Tolerances

A. Maximum Variation of Surface Flatness: 1/4 inch in 10 feet.

B. Maximum Variation From True Position: 1/4 inch.

C. Parking Space must be ADA compliant.

3.8 – Field Quality Control

Testing firm shall take cylinders and perform slump tests in accordance with ACI 301.

3.9 – Protection

A. Immediately after placement, protect concrete from premature drying, excessive hot or cold temperatures, and mechanical injury.

B. Do not permit traffic over concrete until 75 percent design strength of concrete has been achieved.

***END OF SPECIFICATION 03000***

03010 –CONCRETE FORMWORK

1.1 - Summary

The work of this section consists of:

A. Formwork for cast-in place concrete, with shoring, bracing, and anchorage.

B. Form accessories.

C. Form stripping.

1.2 – References

A. ACI 301 – Structural Concrete for Buildings.

B. ACI 318 – Building Code Requirements for Reinforced Concrete.

C. ACI 347 – Recommended Practice for Concrete Formwork.

D. PS 1 – Construction and Industrial Plywood.

1.3 – Design Requirements

Design, engineer and construct formwork, shoring, and bracing to conform to design and code requirements; resultant concrete to conform to required shape, line, and dimension.

1.4 – Quality Assurance

A. Perform work in accordance with ACI 347.

1.5 – Qualifications

Design of formwork is the responsibility of the Contractor.

1.6 – Regulatory Requirements

Conform to applicable code for design, fabrication, erection, and removal of formwork.

1.7 – Delivery, Storage, And Handling

A. Deliver, store, protect, and handle products to site under provisions of General Conditions.

B. Deliver void forms and installation instructions in manufacturer's packaging.

C. Store off ground in ventilated and protected manner to prevent deterioration from moisture.

1.8 – Coordination

A. Coordinate work under provisions of General Conditions.

B. Coordinate this Section with other Sections of work which require attachment of components to formwork.

C. If formwork is placed after reinforcement resulting in insufficient concrete cover over reinforcement before proceeding, request instructions from Government.

PART 2 – PRODUCTS

2.1 – Wood Form Materials

A. Softwood Plywood: PS 1, C Plugged Grade, Group 2.

B. Lumber: Pine species; construction grade or better; with grade stamp clearly visible.

2.2 – Prefabricated Forms

A. Preformed Steel Forms: Minimum 16 gage matched, tight fitting, stiffened to support weight of concrete without deflection detrimental to tolerances and appearance of finished surfaces.

2.3 – Formwork Accessories

A. Form Ties: Snap-off type, galvanized metal, adjustable length, cone type, with waterproofing washer, free of defects that could leave holes larger than 1 inch in concrete surface.

B. Form Release Agent: Colorless mineral oil which will not stain concrete, or absorb moisture, or impair natural bonding or color characteristics of coating intended for use on concrete.

C. Dovetail Anchor Slot: Galvanized steel, 22 gage thick, foam filled, release tape sealed slots, anchors for securing to concrete formwork.

D. Nails, Spikes, Lag Bolts, Through Bolts, Anchorages: Sized as required, of sufficient strength and character to maintain formwork in place while placing concrete.

E. Waterstops: Rubber, minimum 1,750 psi tensile strength, minimum 50°F to plus 175°F working temperature range, maximum possible lengths, ribbed profile, preformed corner sections, heat welded jointing.

3.1 – Examination

A. Government to approve all forms at least 4 hours prior to placing concrete. Notify Government 24 hours in advance of pouring concrete.

B. Verify lines, levels, and centers before proceeding with formwork. Ensure that dimensions agree with drawings.

3.2 – Erection Formwork

A. Erect formwork, shoring, and bracing to achieve design requirements, in accordance with requirements of ACI 301.

B. Provide bracing to ensure stability of formwork. Shore or strengthen formwork subject to over stressing by construction loads.

C. Arrange and assemble formwork to permit dismantling and stripping. Do not damage concrete during stripping. Permit removal of remaining principal shores.

D. Align joints and make watertight. Keep form joints to a minimum.

E. Install void forms in accordance with manufacturer's recommendations. Protect forms from moisture or crushing.

3.3 – Form Release Agent Application

A. Apply form release agent on formwork in accordance with manufacturer's recommendations.

B. Apply prior to placement of reinforcing steel, anchoring devices, and embedded items.

C. Do not apply form release agent where concrete surfaces will receive special finishes or applied coverings which are affected by agent. Soak inside surfaces of untreated forms with clean water. Keep surfaces coated prior to placement of concrete.

3.4 – Inserts, Embedded Parts And Openings

A. Provide formed openings where required for items to be embedded in passing through concrete work.

B. Locate and set in place items which will be cast directly into concrete.

C. Coordinate with work of other sections in forming and placing openings, slots, reglets, recesses, sleeves, bolts, anchors, other inserts, and components of other Work.

D. Install accessories in accordance with manufacturer's instructions, straight, level, and plumb. Ensure items are not disturbed during concrete placement.

E. Install water stops continuous without displacing reinforcement. Heat seal joints watertight.

F. Provide temporary ports or openings in formwork where required to facilitate cleaning and inspection. Locate openings at bottom of forms to allow flushing water to drain.

G. Close temporary openings with tight fitting panels, flush with inside face of forms, and neatly fitted so joints will not be apparent in exposed concrete surfaces.

3.5 – Form Cleaning

A. Clean forms as erection proceeds, to remove foreign matter within forms.

B. Clean formed cavities of debris prior to placing concrete.

C. Flush with water or use compressed air to remove remaining foreign matter.

Ensure that water and debris drain to exterior through clean-out-ports.

D. During cold weather, remove ice and snow from within forms. Do not use de-icing salts. Do not use water to clean out forms, unless formwork and concrete construction proceed within heated enclosure. Use compressed air or other means to remove foreign matter.

3.6 – Formwork Tolerances

A. Construct formwork to maintain tolerances required by ACI 301.

3.7 – Field Quality Control

A. Inspect erected formwork, shoring, and bracing to ensure that work is in accordance with formwork design, and that supports, fastenings, wedges, ties, and items are secure.

B. Do not reuse wood formwork more than 3 times for concrete surfaces to be exposed to view.

C. Do not patch formwork.

3.8 – Form Removal

A. Do not remove forms or bracing until concrete has gained sufficient strength to carry its own weight and imposed loads.

B. Loosen forms carefully. Do not wedge pry bars, hammers, or tools against finish concrete surfaces scheduled for exposure to view.

C. Store removed forms in manner that surfaces to be in contact with fresh concrete will not be damaged. Discard damaged forms.

***END OF SPECIFICATION 03010***

03020 –CONCRETE REINFORCEMENT

1.1 - Summary

The work of this section consists of reinforcing steel bars, wire fabric, and accessories for cast-in-place concrete.

1.2 – References

A. ACI 301 – Structural Concrete for Buildings.

B. ACI 318 – Building Code Requirements for Reinforced Concrete.

C. ACI SP 66 – American Concrete Institute – Detailing Manual.

D. ANSI/ASTM A82 – Cold Drawn Steel Wire for Concrete Reinforcement.

E. ANSI/ASTM A184 – Fabricated Deformed Steel Bar Mats for Concrete Reinforcement.

F. ANSI/ASTM A185 – Welded Steel Wire Fabric for Concrete Reinforcement.

G. ANSI/AWS D1.4 – Structural Welding Code for Reinforcing Steel.

H. ASTM A615 – Deformed and Plain Billet Steel Bars for Concrete Reinforcement.

I. AWS D12.1 – Welding Reinforcement Steel, Metal Inserts, and Connections in Reinforced Concrete Construction.

1.3 – Submittals

Manufacturer's Certificate: Certify that products meet or exceed specified requirements.

1.4 – Quality Assurance

Perform Work in accordance with ACI 301, ACI SP-66 and ACI 318.

1.5 – Coordination

A. Coordinate work under provisions of General Conditions.

B. Coordinate with placement of formwork, formed openings, and other Work.

C. Masonry Joint Reinforcement: ASTM A82, unfinished.

PART 2 – PRODUCTS

2.1 – Reinforcement

A. Reinforcing Steel: ASTM A615, 60 ksi yield grade, as noted on drawings; deformed billet steel bars, unfinished.

B. Welded Steel Wire Fabric: ASTM A185 plain type; in flat sheets; unfinished.

2.2 – Accessory Materials

A. Tie Wire: Minimum 16 gauge annealed type.

B. Chairs, Bolsters, Bar Supports, Spacers: Sized and shaped for strength and support of reinforcement during concrete placement conditions including load bearing pad on bottom to prevent vapor barrier puncture.

C. Special Chairs, Bolsters, Bar Supports, Spacers Adjacent to Weather Exposed Concrete Surfaces: Plastic coated steel type; size and shape as required.

2.3 – Fabrication

A. Fabricate concrete reinforcing in accordance with ACI SP-66 and ACI 318.

B. Weld reinforcement in accordance with ANSI/AWS D1.4 and ANSI/AWS D12.1.

C. Locate reinforcing splices not indicated on drawings, at point of minimum stress.

PART 3 – EXECUTION

3.1 – Placement

A. Place, support, and secure reinforcement against displacement. Do not deviate from required position.

B. Do not displace or damage vapor barrier, if present.

C. Accommodate placement of formed openings.

D. Conform to ACI 318 code for concrete cover over reinforcement.

E. Chairs to be used for all welded-wire mesh in concrete slabs.

***END OF SPECIFICATION 03020***

03030 – CAST-IN-PLACE CONCRETE

1.1 - Summary

This Section includes cast-in-place concrete, including reinforcement, concrete materials, mix design, placement procedures, and finishes.

1.2 – Quality Assurance

A. Standards: Concrete work shall conform to the latest edition of the following standards and to the Contract Drawings and Specifications.

B. Uniform Building Code, as adopted and modified by the local governing authority.

C. American Concrete Institute "Manual of Concrete Practice", and publication ACI 318 "Building Code Requirements for Reinforced Concrete".

D. American Society for Testing and Materials, Standards as referenced herein.

E. Allowable Tolerances: Flatwork true to plane with maximum deviation of 1/4" in 10 feet, measured in any direction.

1.3 – Submittals

A. Ready-mix delivery tickets shall be given to the Project Superintendent for examination by the Government.

B. The tickets shall contain the following information:

a. Number of cubic yards in batch.

b. Quantity and description of admixtures used.

c. Maximum size of aggregate.

d. Design compressive strength.

e. Gallons of water added at the site.

PART 2 – PRODUCTS

2.1 –Materials

A. Cement: Portland Cement, Type II, ASTM C150.

B. Aggregate:

a. Standard weight aggregates conforming to requirements of ASTM C33.

b. Uniformly graded, clean and durable material free of organic matter or other deleterious substances.

c. The maximum size used in a particular location shall be consistent with the form and dimensions of the section being placed and with the method of compaction. The aggregate sizes shall be such as will produce dense, uniform concrete, free of rock pockets, honeycombs and other irregularities unacceptable to an Architectural finished surface.

d. Fill shall be compacted to 95% maximum density in 6” lifts.

C. Water: Potable, free of harmful acids, alkalis, oils and organic substances.

D. Admixtures: No admixtures shall be used unless specifically requested by the General Contractor and approved by the Government. When used, the Contractor shall provide evidence from an independent testing laboratory which assures that the admixture will have no deleterious effect upon reinforced concrete; and which indicates chemical compounds, effects upon strength, durability, and resistance to weathering and wear, and curing time.

E. Expansion Joint Filler:

a. Non-extruding, preformed type; thickness as shown on drawings or plans.

b. Fiber joint filler may be used only with a rubber asphalt sealer. Do not use fiber material with a chemically cured sealant.

F. Control Joint: Propose layout for Government approval.

2.2 – Mixes

A. Ready Mix Concrete: Transit mixed concrete shall conform to the requirements of Standard Specifications for Ready-Mix Concrete, ASTM C94, Alternative 2.

B. Proportions: Proportions of cement, aggregates and water shall be such as to produce a concrete that will work into all corners and angles of forms, and around reinforcement and inserts; and that will not segregate. Proportions shall be as required within limits specified and shall produce concrete of strength and durability required. Excess free surface water is not permitted.

C. Strength: All concrete to be minimum 3,000 psi at 28 days, or as otherwise specified on the plans.

D. Temperature: Concrete when deposited shall have a temperature above 50°F and below 95°F. Design shall provide for duration and type of conveyance and handling.

E. Air Entrainment: All concrete shall have 3-5% air entrainment.

PART 3 – EXECUTION

3.1 – Subgrade Preparation

Subgrades shall be shaped, dressed, moistened, and compacted, as required. Test the subgrade for crown, elevation, and density in advance of placing pavement. Remove and replace soft or unsuitable material with approved material. Bring low sections, holes, or depressions to the required grades with approved material, shape the entire sub-grade to line, grade and cross, and thoroughly compact as specified.

Footings shall rest on undisturbed soil or compacted fill. In the event of over excavation for footings, over excavated portion shall be filled with concrete to correct elevation. Such concrete will be the same quality as that specified for footings.

3.2 – Preparation For Concrete Placement

A. Place embedded items, and expansion strips as indicated; maintain items securely in place. The Contractor shall give reasonable and adequate advance notice of concrete placement to all subcontractors and concerned parties who must place items to be embedded in or pass through the concrete to be poured, e.g. pipes, anchor bolts, sleeves, reglets, casings, etc., as shown on the drawings or otherwise required. Notify Government immediately of any conflict with structural elements.

B. Water shall be removed from place of deposit before concrete is placed unless otherwise permitted by the Government. All laitance and other unsound material shall be removed from hardened concrete before additional concrete is placed.

C. Screeds shall be rigidly secured in place. When the formwork is cambered, screeds shall be set to a like camber to maintain the proper concrete thickness.

D. Upon completion of preparatory operations, but prior to placement of concrete, Government shall be notified for observation minimum 24 hours prior to commencement of concreting operations. No concrete shall be placed without notification. The Government may regard preparatory work unacceptable if he has not had reasonable opportunity for such observation.

3.3 – Formwork

A. Formwork shall be structurally sound and rigid and shall conform in section and dimension to the drawings or plan. Forms are subject to the approval of the Government. Oil forms each time they are used.

B. Shoring and forms shall be cleaned of all loose dirt and other foreign matter.

Dampen dry soil and forms just prior to pouring. Avoid excessive watering.

3.4 – Reinforcement

A. Reinforcing Steel: ASTM A615, 60 ksi yield grade, as noted on drawings; deformed billet steel bars, unfinished.

B. Welded Steel Wire Fabric: ASTM A185 plain type; in flat sheets; unfinished.

3.5 – Accessory Materials

A. Tie Wire: Minimum 16 gauge annealed type.

B. Special Chairs, Bolsters, Bar Supports, Spacers Adjacent to Weather Exposed Concrete Surfaces: Plastic coated steel type; size and shape as required.

3.6 – Joints

Joints not indicated on the drawings or plans shall be so made and located as to least impair the strength of the structure, while reducing the effects of shrinkage. The location of joints not indicated on the drawings or plans are subject to the approval of the Government.

Install pre-molded expansion joints if indicated on the drawings or plans. Expansion joint strips shall be installed to the full depth of the joint. Where caulked expansion joints are indicated on the drawings, set the top of expansion joint strips down from the finished top surface of slabs to the depth required to receive the caulking.

3.7 – Placing Concrete

A. Concrete shall be deposited as nearly as practicable in its final position to avoid segregation due to re-handling or flowing. The placing of concrete shall be carried on at such a rate that concrete is at all times plastic and flows readily into the spaces between the bars.