A1_RestroomReplacementSpecifications_ShowersPoint_080715.pdf

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ATTACHMENT 1

SPECIFICATIONS

FOR

SHOWERS POINT GROUP SITE

RESTROOM REPLACMENT

August 7, 2015

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SPECIFICATIONS

DIVISION 1 – GENERAL REQUIREMENTS

01010 – Scope of Work

01020 – Measurement & Payment

01030 – Construction Staking

01040 – Submittals

01070 – Mobilization

DIVISION 2 – SITE WORK

02010 – Demolition and Clearing

02020 – Earthwork

02030 – Surfacing

02040 – Finish Grading

02060 – Aggregate Base

02070 – High Density Polyethylene Pipe Culvert

DIVISION 3 – CONCRETE

03030 – Cast-in-Place Concrete

03040 – Concrete Finishing

DIVISION 6 – WATER SERVICES

03030 – Wastewater Tanks

02081 – Valves

02223 – Utility Trenching and Backfilling

02510 – Water Distribution

02229 – Utility Line Marking

DIVISION 10 – SPECIALTIES

10010 – Restroom

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SCOPE OF WORK – 01010

PART 1 – GENERAL

1.1 – Description

Furnish all material, equipment, transportation, labor and supervision necessary to complete all work, according to the Drawings and Specifications.

Scope of work includes:

1. Demolition of existing restroom buildings, concrete slabs, retaining wall around toilet, and gate.

2. Installation and compaction of fill material and finished site grading. Slopes on fills should be 4:1 or flatter.

3. Installation of Government-furnished Romtec kit, concrete slabs/routes, wastewater tank, water lines, sewer line, hydrants, culverts, riprap, and bollard.

4. Relocation of trash bins.

1.2 – 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.

1.3 – Location and Conditions

Project location is along Catalina Highway (Mt. Lemmon Highway), northeast of Tucson.

Showers Point Group Site is located at milepost 19.8 (follow Organization Ridge Road to the camp).

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 is advised to determine safe vehicle lengths and load limits for roads that access each site.

1.4 – Schedule

A pre-proposal site visit, Government-guided, is available and strongly recommended for all prospective offerors on the date and time listed under this solicitation in Federal Business

Opportunities.

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A post-award pre-work meeting for clarification of the project will be scheduled prior to or on the actual start work date.

A schedule for all work must be submitted to and approved by the Contracting Officer.

The Government will provide accurate delivery schedule information on the Government-furnished Romtec restroom kit. Delays in Government delivery of the kit will not be charged toward contract time.

Work at Showers Point may begin as early as September 1; however, it is likely the Notice to

Proceed will be issued no earlier than September 10. Construction between March 1 and

August 31 is not allowed due to wildlife restrictions. The weather is generally suitable for construction at this site into mid-December. Contractor shall schedule sufficient crews in order to finish all work within 90 calendars days from the Notice to Proceed so as to minimize the risk of winter weather induced delays.

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.

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, specifications and provisions of the contract.

The Contractor shall not disturb plants or soil 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. Plants damaged or destroyed unnecessarily shall be replaced at Contractor’s expense with identical species and size of plants.

1.6 – Bio-based Products under Service and Construction Contracts

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

The contractor shall submit descriptions of appropriate products to the Contracting Officer for final approval prior to the construction start work date.

Reference: http://www.biopreferred.gov/BioPreferred http://www.biopreferred.gov/BioPreferred

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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) - Manual 318

3. Uniform Federal Accessibility Standards (UFAS), American Disabilities

Act/Architectural Barriers Act Accessibility Guidelines (ADAABAAG), and

Forest Service Outdoor Recreation Accessibility Guidelines (FSORAG).

FSORAG are available on the internet at www.fs.fed.us/recreation/programs/accessibility.

4. American Society for Testing and Materials (ASTM)

5. Standardized Specifications for Paints and Coatings (SSPC)

6. American National Standards Institute (ANSI)

7. Occupational Health and Safety Administration (OSHA) standards

8. Manual of Uniform Traffic Control Devices (MUTCD)

9. 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.

1.8 – Special Construction Requirements

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

B. Construction Access and Protection: The Contractor shall secure the site with a chain link fence to securing the project areas from the public and protect the Contractor's materials, and work until final acceptance by the Government. The Contractor shall also provide sufficient signs, barriers, barricades, markers, etc. to warn the public of hazardous conditions and to protect the public from injury.

C. The site may be closed during construction.

D. Equipment and material storage: The Contractor shall obtain permission from the

Government for equipment and material storage, and for other areas needed for construction.

E. 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.

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F. Sanitation/Garbage: The Contractor may provide and maintain a portable toilet for construction personnel during the Contract period, and 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.

G. Contractor shall ensure that construction activities minimize their disturbance footprint. Equipment shall avoid damage to surface soils and vegetation beyond what is necessary for completion of work items.

H. New concrete slabs at Showers Point shall be a medium broom. Concrete slabs for trash bins shall be 5” thick and be sized to extend 6” beyond all sides of trash bin dimensions.

I. The water hydrants shall be Water pedestals shall be Hoeptner Products, or approved equal, Standard ADA Hydrant (Freeze Flow Executive Model) available from:

Hoeptner Products, 7796 Oak Springs Circe, Gilroy, California 95020, 1-408-847-

7615. Install per manufacturer’s recommendations.

J. Water Line Extension pay items shall include:

a. Provide a new 1 inch PEX waterline from the location of the existing restroom to the location of the new restroom.

b. Connect to the existing waterline with the appropriate connector.

c. Install a new concrete valve box at the new restroom location with bolted lid and two brass or stainless steel ball valves.

d. Install a 1 inch galvanized drain line to daylight with brass or bronze screen at the outlet.

e. The waterline shall be galvanized pipe within 5 feet upstream of the valve box and all downstream plumbing.

f. Install a lockable hose bib on outside of building as shown on plans. Plumb to allow complete draining of lines for winter shutdown.

g. The depth of waterlines shall be 24 inches minimum. Bed piping to 1 ft.

above pipe with spec bedding material.

h. Provide unions for removal of valves.

i. Place marking tape over all buried water lines.

K. Bollard shall be Traffic Guard Single Post (HDHB) Bollard, or approved equal.

Install per manufacturer’s recommendations. Available from www.trafficguard.net, 877-727-7347, sales@trafficguard.net.

1.5 – Utility Services

Electric service is not available.

Water is available through the end of October.

http://www.trafficguard.net/ mailto:sales@trafficguard.net

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1.6 – Contract Closeout

Remove temporary facilities and provide final cleaning and touch-up. Restore portions of 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 ***

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MEASUREMENT & PAYMENT – 01020

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.

1.2 – Determination of Quantities

A. The following measurements and calculations are used to determine contract quantities.

1. The average end area method will be used to compute volumes of excavation or embankment. However, if in the judgment of the Government, the average end area method is impractical, measurement will be made by volume in hauling vehicles or by other three dimensional methods.

2. Structures will be measured according to lines SHOWN ON THE DRAWINGS or as altered in writing by the Government to fit field conditions.

3. For items that are measured by the linear foot, measurements will be made parallel to the base or foundation upon which the structures are placed. Pipe culverts shall be measured along center of invert and pipe arches shall be measured at spring line.

4. For vehicular shipments, net certified scale weights or weights based on certified volumes will be used as a basis of measurement. Measurements will be adjusted when material has been lost from the vehicle, has been wasted, or has otherwise not been incorporated into the work. Determining true weights of hauling vehicles shall be made by weighing the empty vehicles at least once a day as directed by the Government. Each vehicle shall bear a plainly legible identification mark.

5. For aggregates weighed for payment, the tonnage will not be adjusted for moisture content unless otherwise provided.

6. For standard manufactured items (such as fence, wire, plates, rolled shapes, pipe conduits) which are specified by gauge, weight, section measurements, and so forth, such identifications shall be considered the nominal weights or dimensions.

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Unless controlled by tolerances in cited specifications, manufacturer's tolerances will be accepted.

1.3 – Units of Measurement

A. Payment will be by units defined and determined according to U.S. Standard measure and by the following:

1. Cubic Yard: A measurement computed by one of the following methods:

(a) Excavation, Embankment, or Borrow. The measurement computed by the average end area method from measurements made longitudinally along a centerline or reference line.

(b) Material in Place or Stockpile. The measurement computed using the dimensions of the in-place material.

(c) Material in the Delivery Vehicle. The measurement computed using measurements of material in the hauling vehicles at the point of delivery.

Vehicles shall be loaded to at least their water level capacity. Leveling of the loads may be required when vehicles arrive at the delivery point.

2. Ton: Short ton consisting of 2,000 pounds.

*** END OF SPECIFICATION 01020 ***

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CONSTRUCTION STAKING – 01030

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 ***

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SUBMITTALS – 01040

PART 1 – REQUIREMENTS

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

A. The Contractor shall submit three (3) copies 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.

B. 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.

C. Manufacturer's literature, shop drawings, or samples are required for the following items:

1. Hydrant

2. Bollard

3. Culvert

4. Wastewater tank, sewer line, RV connection, ball valves, valve box, water lines, lockable hose bib, and marking tape

5. Bio-based sealers (floors and porch posts)

D. Certificates of compliance are required for the following items:

1. Aggregate

2. Concrete

3. Rebar

4. Fibermesh reinforcement

5. Fill Material

*** END OF SPECIFICATION 01040 ***

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MOBILIZATION – 01070

1.1 – Description

This section specifies preparatory work and operations necessary for the movement of personnel, equipment, supplies, and incidentals to the project site, and for all other work and operations that must be performed or that cause costs to be incurred prior to beginning work on the various items at the project site.

1.2 – Basis of Payment

A. The Contractor can request payment for performance and payment bonds upon receipt of evidence of full payment to the surety. When separate payment for bonding cost is made, the bonding cost will be subtracted from the total contract amount for this pay item and the balance paid in accordance with the progress payment schedule outlined below.

B. Any bonding costs in excess of the total contract amount of this pay item will be paid under one or more other pay items under this contract as determined by the Government.

Under no circumstances will the total amount of this contract be increased as a result of bonding costs exceeding the total contract amount of this pay item.

C. Progress payments will be made as follows:

1. When 5 percent or more of the original contract amount is earned from other pay items, 50 percent of the amount for mobilization, or 5 percent of the original contract amount, whichever is less, will be paid.

2. When 10 percent or more of the original contract amount is earned from other pay items, 100 percent of the amount for mobilization, or 10 percent of the original contract amount, whichever is less, will be paid.

3. Upon completion of all work on the project, any unpaid amount for mobilization will be paid.

4. The total of all payments shall not exceed the original contract amount for this item.

*** END OF SPECIFICATION 01070 ***

*** END DIVISION 1

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***DIVISION 2 – SITE WORK

DEMOLITION AND CLEARING – 02010

1.1 – Section Includes

A. Removal of surface debris and clearing of vegetation.

B. Removal of facilities, including restroom buildings, concrete slabs, retaining wall around restroom building, and gate.

C. Salvage the following items:

1. Trash bins: Re-install on site.

1.2 – References

A. Coordinate clearing work with the Government.

B. Comply with site-specific landscape and hardscape demolition requirements found in other sections and drawings.

PART 2 – PRODUCTS

Not Used.

PART 3 – EXECUTION

3.1 – Preparation

At Showers Point, cap existing water line that serves existing restroom.

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.

Protect tree trunks from construction activities with wraps, blankets, or similar. See supplemental specifications for tree protection information.

B. Protect existing structures from damage or displacement. Also protect vegetation, soils, rock faces that are outside grading limits.

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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. Remove and legally dispose all construction debris and extracted plant life from site.

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. All facilities and materials scheduled for demolition must be completely removed and disposed of legally off Government lands by the Contractor.

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

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

F. Restroom demolition shall be as follows:

Dispose of all chemical flush agent both used and unused per State and local regulations. Remove all structural components associated with the building. Remove vault (holding tank) at least 2 feet below finished ground elevation and break floor so it does not hold water, remove associated pipe, and backfill to match surrounding grade. Contractor shall assume that vault (holding tank) is 1500 gallons and constructed from concrete or concrete block.

*** END OF SPECIFICATION 02010 ***

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EARTHWORK – 02020

1.1 – Work Included:

Supply and place fill material to create building pad. Utilize site excavation prior to importing material for required fill operations.

Excavation is unclassified. For bidding purposes, Contractor may assume that a medium sized backhoe or track excavator can complete excavation without the use of a rock hammer.

Fill Materials:

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.

Other acceptable fill material: Crushed aggregate, conforming to the requirements of

AASHTO M147, grade D

1.1 – 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:

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

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

1.2 – 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.

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1.3 – 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.

1.4 – 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 ***

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SURFACING – 02030

1.1 – Description Of Work

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:

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

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

B. Aggregate Base Course: The Contractor shall submit a laboratory analysis of the aggregate base course material.

C. Reinforcing Steel: Manufacturer's certification that the reinforcing steel conforms to the grade and type specified.

1.5 - Dust Control

A. The Contractor shall maintain adequate dust control at all times by sprinkling with water or other approved methods.

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2.1 – PORTLAND CEMENT CONCRETE (PCC)

The Portland Cement Concrete shall conform to PC/COT Standard Specification No. 1006 and the class specified.

2.2 – Aggregate Base Course

The aggregate base course shall conform to PC/COT Standard Specification No. 303.

2.3 – Reinforcing Steel

Reinforcing steel shall conform to PC/COT Standard Specification 1003.

2.4 – Joint Material

Joint material shall conform to PC/COT Standard Specification 1011.

3.1 – Cleanup

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 ***

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FINISH GRADING – 02040

1.2 – Work Included:

Soil preparation for raked areas. Backfill along concrete, block, and asphalt edges.

1.3 – Job Conditions:

Comply with local regulations for dust control.

Refer to other specifications and the plans.

3.1 – Preparation

C. 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.

D. Scheduling:

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

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

3.2 – Excess Water Control

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

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

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

3.3 – Finish Grading

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

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

E. Backfill along all concrete edges so that none protrude over 1" 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 ***

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AGGREGATE BASE - 02060

PART I-GENERAL

1.1 SUMMARY

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 Contracting Officer (CO) from testing services, with copy to Contractor.

1.3 QUALITY ASSURANCE

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

B. 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 detennined byAASHTO T89-81 and 0-81, respectively.

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

SIEVE DESIGNATION PERCENT PASSING

1-1/2 inch 100

1 inch 80 - 100

No.4 35 - 75

No. 40 10 - 30

No. 200 0 - 10

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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:

1. 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.

2. 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.

3. 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.

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.

3.6 TOLERANCES

Surface: Contractor shall test finished surface of the base course with a 10-foot straightedge or other device. The variation between any two contacts with the surface.

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3.7 MAINTENANCE

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

***END OF SECTION 02060***

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HIGH DENSITY POLYETHYLENE PIPE CULVERT - 02070

PART 1 GENERAL

1.1 WORK INCLUDED

High Density Polyethylene pipe and appurtenances.

1.2 RELATED WORK

Section 02030: Earthwork

1.4 SUBMITTALS

Product Data

PART 2 PRODUCTS

2.1 HIGH DENSITY POLYETHYLENE PIPE (HDPE)

A. Materials and Construction: AASHTO M294

B. SDR as appropriate for length and cover

C. Diameter as shown on Drawings

PART 3 EXECUTION

3.1 INSTALLATION

As per manufacturer’s recommendations

*** END SPECIFICATION 02618 ***

*** END DIVISION 2 ***

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DIVISION 3 – CONCRETE

CAST-IN-PLACE CONCRETE – 03030

PART 1 – GENERAL

1.1 – Quality Assurance

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

2. International Building Code, as adopted and modified by the local governing authority.

3. American Concrete Institute "Manual of Concrete Practice", and publication

ACI 318 "Building Code Requirements for Reinforced Concrete."

A. Allowable Tolerances: Flatwork true to plane with maximum deviation of 3/16" in 10 feet, measured in any direction.

1.2 – Submittals

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

Government in three copies. The tickets shall contain the following information.

1. Number of cubic yards in batch.

2. Quantity and description of admixtures used.

3. Maximum size of aggregate.

4. Design compressive strength.

5. Gallons of water added at the site.

PART 2 – PRODUCTS

2.1 – Materials

A. Cement: Portland Cement, Type II, ASTM C150. Concrete at Molino Basin shall have integral color to match existing slabs.

B. Aggregate

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

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

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3. 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, honey combs and other irregularities unacceptable to an

Architectural finished surface.

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

D. Admixtures: No air entraining agents shall be used. 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

1. Non-extruding, preformed type; thickness as shown on drawings.

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

F. Control Joints: Provide 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 3000 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: 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

- 27 -required grades with approved material, shape the entire sub-grade to line, grade and cross , and thoroughly compact as specified.

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. 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. 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, 40 or 60 ksi yield grade, as noted on drawings;

deformed billet steel bars, unfinished.

B. Slabs that will not have vehicular access may be reinforced with fibermesh. See drawings for locations.

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 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 is subject to the approval of the Government.

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Install pre-molded expansion joints where indicated on the drawings. 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. No concrete that has been contaminated by foreign material shall be used, nor shall re-tempered concrete be used unless approved by the Government.

B. When placing is once started, it shall be carried on as a continuous operation until placement of the panel or section is completed. When construction joints are necessary, they shall be made as specified herein.

C. No concrete shall be dropped freely into place from a greater height than four feet.

Tremies shall be used for placing concrete where the drop is in excess of such height.

D. All concrete shall be thoroughly consolidated by suitable means during placement. It shall be thoroughly worked around reinforcement and embedded fixtures and into the corners of the forms. Vibration shall be transmitted directly to the concrete; in no case shall it be transmitted through the forms. The vibration shall be sufficiently intense to cause the concrete to settle readily into place and to visibly affect the concrete over a radius of at least 18". Vibrators shall not, however, be used to transport concrete or force concrete to flow horizontally. Vibration shall be supplemented by manual forking or spading adjacent to the forms on exposed faces in order to secure smooth, dense surfaces. If, for any reason, the surfaces or interiors have voids or are in any way defective, such concrete shall be repaired as directed by the Government, and no defective work shall be patched or repaired without the prior inspection and approval of the Government.

E. Slump

The slump shall not exceed 4-1/2" without the expressed approval of the Government.

3.8 – Hot Weather Requirements

Concrete pours during hot weather should be scheduled for early morning hours to the maximum extent possible in order to permit finishing operations to be completed by noon.

3.9 – Cold Weather Requirements

A. Adequate equipment shall be provided for heating concrete materials and protecting concrete during freezing or near-freezing weather. No frozen materials or materials containing snow or ice shall be used.

B. All reinforcement, forms, fillers, and ground with which the concrete is to come in contact shall be free from snow or ice. Whenever the temperature of the surrounding air is below 40°F or higher after placement. Adequate means shall be provided for maintaining this temperature for 4 days. When high-early-strength concrete is used, a temperature of at least 45°F shall be maintained for 3 days. In either case, any additional time necessary to ensure proper curing of the concrete shall be provided as

- 29 -directed by the Government. The housing, covering, or other protection used in connection with curing shall remain in place and intact at least 24 hours after the artificial heating is discontinued. No dependence shall be placed on salt or other chemicals for the prevention of freezing.

3.10 – Removal Of Forms

Forms shall be removed in such a manner as to ensure the complete safety of the structure.

3.11 – Finishing

See Section 03040 – Concrete Finishing – All Concrete

See drawings.

3.12 – Cement Mortar

Cement mortar for the repair of imperfect concrete work, the filling of holes left by form bolts and ties, and the filling of voids around piping through concrete shall consist of cement and sand mixed in the same proportion as used for the concrete being repaired, with only sufficient water to give the required consistency, but in no case shall the water-cement ration be more than that specified for Class "A" concrete. Mortar that has not been placed within 30 minutes of mixing shall be discarded.

3.13 – Curing

Concrete shall be protected against loss of moisture, rapid drying, or temperature changes, mechanical injury or injury from rain or flowing water for a period of at least seven days in accordance with requirements of ACI 308 and ACI 305, as specified herein. Curing shall commence as soon as free water has disappeared from the surfaces after finishing.

3.15 – Defective Materials And Concrete

Concrete work shall be considered defective if not formed in accordance with the requirements of the drawings and specifications. Concrete may be judged to be unacceptable if it is not true to intended line, grade or plane, or contains sand streaks, objectionable joints, excessive pitting or dusting, voids or rock pockets detrimental to structure or finish, or which shows other irregularities, marking or deficiency including improper strength.

Defective concrete work shall be removed and replaced with new concrete acceptable to the Government, unless suitable correction of defects may be otherwise accomplished as authorized by the Government, and without additional cost to the Government.

3.16 – Protection Of Completed Work

During the curing period, protect the concrete from damaging mechanical disturbances, water flow, loading, shock, impact and vibration.

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3.17 – Cleaning

After the concrete work is complete, carefully remove all excess concrete and all protective materials, expose the aggregate, and remove all mortar and other foreign materials. All concrete inserts, anchor bolts, etc., shall be cleaned of all concrete after forms are removed.

*** END OF SPECIFICATION 03030 ***

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DIVISION 3 - CONCRETE

CONCRETE FINISHING - 03040

PART 1 – GENERAL

1.1 – Description of Work:

The work under this section shall consist of furnishing all labor, tools, materials, and equipment to finish all cast-in-place concrete, in accordance with the details shown on the plans and these specifications. All costs associated to this specification shall be considered incidental to the placement of concrete.

1.2 – Related Sections

A. Section 03030 – Cast-in-Place Concrete.

1.3 – Submittals for Review

See Section 01040 – Submittals: Procedures for submittals.

1.4 – Quality Assurance

Perform work in accordance with ACI 303R.

1.5 – Pre-Installation Meeting

Convene one week prior to commencing work of this section.

1.6 – Delivery, Storage, and Protection

Transport, handle, store, and protect products.

PART 2 – PRODUCTS

2.1 – Concrete Materials

Specified in Section 03030.

2.2 – Concrete Mix

A. Utilize concrete mix design specified in Section 03030.

2.3 – Sealing

- 32 -

3.1 – Exterior Surfaces

The concrete at Showers Point shall be a medium broom finish.

*** END OF SPECIFICATION 03040 ***

*** END DIVISION 3 ***

- 33 -

WASTEWATER – 06010

1.1 – References

See sewer hookup detail.

1.2 – Description of Work

The work under this section shall consist of furnishing all labor, tools, and equipment to install the waste water holding tank including piping connections thereto, and connection.

Underground holding tank shall be 1500 gallon polyethylene tank with risers and screened galvanized vent.

4” ABS or PVC sewer line

RV connection (see detail)

Marking tape

3.1 – Trench Excavation:

Trench excavation shall be in accordance with the details shown on the plans. All trash and loose rock or loose earth shall be removed from the trench prior to the placement of bedding material.

3.2 – Placement of Bedding Material:

Pipe bedding material shall be a clean sandy material conforming to the following gradation:

Sieve Size Percent Passing

1/2 inch 100

No. 8 30 – 85

No. 200 0 – 15

NOTE: The plasticity index shall not exceed 5 when tested in accordance with the requirements of

AASHTO T90. The sum of the percent passing the No. 200 sieve and the plasticity index shall not exceed 15.

Pipe shall be installed on a minimum 4-inch thickness of bedding material. Bedding material shall be placed under, around, and over the pipe to an elevation of 1-foot above the top of the pipe after compaction.

- 34 -

Bedding material shall be compacted to at least 90 percent of the maximum density determined in accordance with the requirements of Arizona Test Method 225, 226, 227, 230 or 231, and 232.

3.3 – Placement of Backfill Material:

Backfill material shall consist of:

Native Material – Native material is that material excavated from the trench. Native material used for trench backfill shall be free from deleterious and organic substances, chunks of clay, concrete, asphaltic concrete, and debris of any nature. Native material shall be screened of stone larger than 3 inches in greatest dimension prior to use as backfill material. No native material will be allowed for use as pipe bedding.

Imported Material – Imported material used for trench backfill shall conform to the following gradation:

Sieve Size Percent Passing

3 inch 100

3/4 inch 60 - 100

No. 8 35 - 80

No. 200 0 – 12

The plasticity index shall not exceed 12 when tested in accordance with the requirements of

AASHTO T90.

Backfill material shall be compacted to at least 95 percent of the maximum density as determined in accordance with the requirements under Section 3.2 – Placement of Bedding Material.

3.4 – Sewer Lines

All sewer lines shall have a minimum 1% slope and be installed with marking tape.

3.5 – Installation of holding tanks

Install holding tanks per manufacturer’s recommendations at the location staked on the ground.

Slope the bottom of the tank away from the sewage inlet by 6”. Place 6” of sand at the bottom of the excavation before setting the tank. Provide sufficient risers to ensure that the pumpout port lid is approximately 2 inches above grade. The U shaped vent shall extend above grade approximately 12 inches. Fully surround the vent with rock weighing 100 lbs minimum. Backfill the tank with specified bedding material.

*** END OF SPECIFICATION 06010 ***

- 35 -

VALVES - 02081

PART 1 ‐ GENERAL

1.1 ‐ Summary

This section specifies the furnishing and installation of valves.

1.2 ‐ Performance Requirements

Working Pressure: 125 psi minimum for all valves unless otherwise shown.

1.4 ‐ Submittals

Submit sufficient descriptive literature to demonstrate compliance with these specifications for each type and brand of valve being furnished.

PART 2 ‐ PRODUCTS

2.1 ‐ Materials

Ball valves – 2” full port brass or SS, Watts or approved equal

PART 3 ‐ EXECUTION

3.1 ‐ Installation

Install valves according to manufacturer's installation recommendations.

***END OF SECTION 02081***

- 36 -

UTILITY TRENCHING AND BACKFILLING - 02223

PART 1 - GENERAL

1.1 - Summary

The work of this section consists of trenching, backfilling, and compacting for the construction and installation PVC waterlines.

1.2 – Definition

Materials used in backfill are defined as follows:

A. Bedding (BD): Layer placed over the excavated subgrade in a trench before laying pipe. When rock, unstable material, or wet trench is encountered at the excavated grade for utility installation, bedding is required. Materials shall be predominantly sand and gravel, having a plasticity index less than 6. Bedding may be omitted if, in the opinion of the Contracting Officer, the excavated trench bottom will adequately support and not damage the utility line.

B. Select Backfill (SB): Materials shall be predominantly sand and gravel, having a plasticity index less than 6.

C. Backfill (BF): Soil materials used to fill an excavation

Soils that contain no rock larger than 6 inches at greatest dimension. If expansive clays are present, such content shall not exceed one-third of the material by volume, and shall be well mixed with noncohesive soils.

1.3 – Excavation Classification

Regardless of the nature of material excavated, all excavation will be considered unclassified.

PART 2 - PRODUCTS

2.1 - General

All backfill material shall be approved before use and be free of cinders, ashes, ice, frozen soil, large hard clods, organic debris, or other deleterious items. Trench excavation materials may be used as approved.

- 37 -

2.2 – Materials for Backfilling

Furnish required bedding, select backfill, and backfill materials listed under the appropriate types of utility line in the sections to which this work relates.

Satisfactory Soils: ASTM D 2487 Soil Classification Groups (GW, GP, GM, SW, SP, and

SM), or a combination of these group symbols.

Unsatisfactory Soils: ASTM D 2487 Soil Classification Groups (GC, SC, ML, MH, CL, CH, OL, OH, and PT), or a combination of these group symbols.

2.3 – Utility Line Marking

All utilities shall be marked for location and identified by marking tapes, as specified in Section 02229.

PART 3 - EXECUTION

3.1 – Excavation

Notify COR when excavation is completed. Do not place or begin backfill until the excavation is approved by the COR.

3.2 - Backfilling

A. Do not place backfill until installation of pipe has been approved by the COR.

B. Compaction: Use vibratory compactors for sands and gravels (noncohesive soils). Use mechanical tampers for sand and gravel containing a significant portion of fine-grained material, such as silt and clay (cohesive soils). Hand tamp around pipe or cable to protect the lines until adequate cushion is attained.

C. Bedding: Compact the specified material to 95 percent of maximum density to the finished utility grade.

D. Utility Installation: Shape the trench bottom to ensure uniform contact with the full length of the installed line and remove any sharp-edged materials that might damage the line. Compaction shall be maintained beneath the line.

E. Select Backfill: Fill by hand placement around the utility to just over half depth, and compact in a manner to ensure against lateral or vertical displacement. Place select backfill to 12 inches above the utility line by hand placement in not more than 6-inch layers. Compact each layer to 95 percent of maximum density.

F. Backfill: Place and compact the specified material as follows:

- 38 -

Fill and compact in 8-inch maximum layers to 90 percent o f maximum density.

***END OF SECTION 02223***

- 39 -

WATER DISTRIBUTION - 02510

The work under this section shall consist of furnishing all labor, tools, and equipment to install and replace…