CSI_Specifications.docx

CSI SPECIFICATION INDEX

FOR

Kaibab National Forest Williams Ranger District Oak Hill Toilet Installation

END OF SPECIFICATION INDEX

DIVISION 1 - GENERAL REQUIREMENTS

01010 – SUMMARY OF WORK

PART 1 - GENERAL

1.1 – Location

This project is located as follows:

For Oak Hill Snow Play Area: From Flagstaff, AZ head west out of town along Interstate 40 for approximately 12.9 miles to the turn off for Parks and take a right. Take a left onto Old Route 66 and follow that for approximately 4.3 miles and the project site will be on the left

For the Garland Prairie Parking Area: From Flagstaff, AZ head west out of town along Interstate 40 for approximately 12.9 miles to the turn off for Parks and take a right. Take a left onto Old Route 66 and follow that for approximately 3.2 miles and the project site will be on the left.

1.2 – General

1. All work shall be completed in accordance with project specifications and construction drawings. The work includes all labor, material, and equipment necessary to perform all the operations for the work specified herein and as stated in the construction drawings.

2. The purpose of this project is to place one new toilet facility for public use at the Oak Hill Snow Play Area.

The Contractor shall be responsible for any necessary site investigations, detailed and accurate material lists, and all field measurements necessary in order to complete the construction and placement of the toilet building.

3. The drawings which accompany this project are meant for reference and bidding purposes only. Although the requirements of these drawings are binding, the plans and elevations shown on them are not meant to be relied upon for construction.

1.3 – Description of Work

A. Work under this contract will be as follows:

a) Excavation, preparation and backfill of vault hole.

b) Preparation and compaction of vault hole bedding.

c) Demolition and removal of existing toilet buildings and vaults.

d) Backfill and compaction of demolished vault holes.

e) Removal of unsuitable material

1.4 – Examination of Sites A. Bidders are encouraged to visit the site, compare the drawings and specifications with any work in place, and inform themselves of all conditions, including other work, if any, being performed. Failure to visit sites will in no way relieve the successful bidder from the necessity of furnishing any materials or performing any work that may be required to complete work in accordance with drawings and specifications, without additional cost to the Government.

B. Information regarding the site of the work provided in drawings or specifications is believed to be reasonably correct, but the Government does not warrant either the completeness or accuracy of such information, and it is the responsibility of the contractor to verify all information independently and to make other examinations of the conditions to be encountered during construction.

C. The contractor acknowledges that he/she has investigated and satisfied himself/herself as to the conditions affecting the work, including, but not restricted to, those bearing upon transportation, disposal, handling and storage of materials, availability of labor, water, electric power, roads, and conditions of the ground, the character of equipment and facilities needed prior to and during prosecution of the work. The contractor further acknowledges that he/she is satisfied as to the character, quality, and quantity of surface and subsurface materials or obstacles to be encountered insofar as this information is reasonably ascertainable from an inspection of the site. Any failure by the contractor to acquaint himself/herself with the available information will not relieve him/her from the responsibility for estimating properly the difficulty or cost of successfully performing the work. The Government assumes no responsibility for any conclusions or interpretations made by the contractor based on the information made available by the Contracting Officer’s Representative.

1.5 – Timing of Work

Work under this contract is scheduled to begin August 1, 2015. No restrictions are placed on weekend work.

The time to complete the work and all associated payments in this contract is set to be completed no later than September 1, 2015.

1.6 – Government – Furnished Facilities

A portion of the site is available to the Contractor for staging and storage during the project. Any damage resulting from the Contractor’s use of the sites will be repaired or replaced at the Contractor’s expense at the direction of the Contracting Officer’s Representative.

Electricity and water are not available. Cell phone operation may be possible at the site. All temporary services and use areas shall be completely removed and the areas restored upon completion of use. Transportation to and from the work site for the Contractor's personnel and materials will be provided at the Contractor's expense.

1.7 – Government – Furnished Products

The toilet shall be government-furnished, delivered, and set via crane at the construction site. The toilet is manufactured by CXT Precast, Spokane, Wa. (1-800-696-5766), under contract. Contractor responsible for coordinating deliveries, placement and traffic control.

1.8 – Material Sources

A. All materials shall be obtained from commercial sources unless noted otherwise. Materials referred to by trade name, make, or catalog number shall be regarded as establishing a standard of quality; substitutions of equal quality can be made by submitting a data sheet of the proposed substituted item to the Contracting Officer’s Representative, for approval.

1.9 – Clean up and Disposal

A. Waste accumulation in approved containers and material staging is allowed at the site. Disposal of waste material will be off National Forest Land and in compliance with local, state, and federal laws regarding disposal of construction waste. Before final acceptance of the project by the Government, the Contractor shall remove from Government land all waste materials and rubbish resulting from this work.

B. Clean excavated material shall be stockpiled on site in a location approved by the Contracting Officer’s Representative.

1.10 – Precautionary Measures

A. Protection of Work: The Contractor shall take precautions to protect all work during the construction period. The Contractor shall provide and maintain adequate protection during the course of the work to ensure the public does not tamper with or vandalize any equipment or project work.

B. Safety: The Contractor is responsible for safeguarding employees, public, existing facilities, and forest resources from his/her operations. All operations shall comply with the requirements and restrictions of OSHA, the Arizona Occupational Safety and Health Code, and the Workman’s Compensation Board. The Contractor shall erect signs and barricades to make unguarded operations safe as required. Signs and barricades shall be maintained at night and on weekends. Precautions such as safely storing materials shall be practiced to prevent injury to others in the area.

C. Security: Security is not provided by the Government. The Contractor shall take all precautions deemed necessary to secure the worksites, improvements and equipment. This may include security fencing at the Contractor’s discretion.

1.11 – Applicable Codes and Standards

All work shall conform to the latest editions of the American Welding Society Code, the American Institute of Steel Construction, the Forest Service Accessibility Guidelines, and all OSHA regulations. All environmental codes shall be adhered by the Contractor.

1.12 – Subsurface Soils and Investigations

No auger boring tests were made in the area. Under supervision of the Engineer, the Contractor shall undertake any site investigations necessary to ascertain subsurface conditions.

END OF SPECIFICATION 01010

01030 – NOXIOUS WEED CONTROL

PART 1 - GENERAL

1.1 – Description

This work consists of incorporating weed prevention and control within the project site. The Contractor shall prevent new weed infestations and the spread of existing weed infestations within the project site as specified herein.

PART 2 - PRODUCTS

None.

PART 3 - EXECUTION

3.1 – Equipment

The Contractor shall ensure all equipment brought onto the Forest is thoroughly washed/cleaned in order to remove all soil, vegetative matter, and other debris prior to entering the forest. Particular attention shall be given to the under carriage and any other surface where soil containing weed seed and propagules may exist. All equipment shall be inspected by the Forest Service. Only construction and maintenance equipment, and the equipment necessary to transport said equipment shall be allowed to operate within the project area after it has been cleaned by the Contractor and inspected by the Forest Service. All subsequent move-ins of equipment to the project area shall be treated in the same manner as the initial move-in.

The Contractor shall employ cleaning methods, approved by the Forest Service, to ensure that construction and maintenance equipment is free of noxious weeds. Equipment shall be considered free of soil, seed, and other such debris when a visual inspection does not disclose such material. Equipment or component disassembly, or the need for specialized tools, are not required.

Unless otherwise agreed, the Contractor shall give the Forest Service at least 24 hour notice when equipment is ready for inspection. Notification will include an agreed upon location where the equipment will be available for inspection by the Forest Service. Inspection will be required after every cleaning.

3.2 – General Project Work

The Contractor shall minimize soil surface disturbance wherever possible.

New infestations of noxious weeds of concern to Forest Service and identified by either Contractor or Forest Service, on the project site or on haul routes the Contractor plans to use, shall be promptly reported to the other party. Contractor and Forest Service shall agree on treatment methods to reduce or prevent the spread of hazardous, invasive, and noxious plant species when new infestations are found. A current list of hazardous, invasive, and noxious plant species is available at each Forest Service office. A copy of this list as well as the Forest Service’s Best Management Practices will be submitted to the contractor.

A Noxious Weed Summary (“standards and guides”) will be submitted to the Contractor by the Government providing information about hazardous, invasive, and noxious plant species that may be encountered at the project sites or haul roads.

PART 4 - MEASUREMENT AND PAYMENT

4.1 – Measurement

There will be no separate measurement of this item.

4.2 – Payment

This work is incidental to other items in the contract and direct separate payment will not be made.

END OF SPECIFICATION 01030

01103 – MEASUREMENT AND PAYMENT

PART 1 - GENERAL

1.1 – Requirements:

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 and included in the payment of the pay items in the SCHEDULE OF ITEMS.

1.2 – Measurement Terms and Definitions:

Unless otherwise specified, the following terms are defined as follows:

Each. One entire unit. The quantity is the actual number of units completed and accepted.

Linear foot. As applicable, measure the work along its length from end-to-end; parallel to the base or foundation; along the top; along the front face; or along the invert. Do not measure overlaps.

Lump sum. Do not measure directly. The bid amount is complete payment for all work described in the contract and necessary to complete the work for that item. The quantity is designated as "1." Estimated quantities of lump sum work shown in the contract are approximate.

Square yard. 9 square feet. Longitudinal and transverse measurements for area computations will be made horizontally. No deductions from the area computation will be made for individual fixtures having area of 9 square feet or less.

1.3 – Units of Measurement

Payment will be by units defined and determined according to U.S. Standard measure.

END OF SPECIFICATION 01103

MOBILIZATION – 01200 24

01300 – SUBMITTALS

PART 1 - GENERAL

1.1 – 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 ten (10) days for processing of submittals by the Government.

Submittals may also be referred to as SHOP DRAWINGS.

1.2 - Manufacturer's Literature and Shop Drawings

Submit two (2) copies to the Engineer for approval on the items required herein.

Submittal specifications are to be submitted in the following format:

A. The specifications and salient qualities of the item specified in the contract.

B. The specifications and salient qualities of the submittal item.

C. A listing of the differences and a comparison between the two, including but not limited to the structural qualities, operational qualities, any modifications necessary to accomplish installation of unit, and guarantee and warranty.

D. A cost comparison between the specified and submitted item(s) with the cost reduction benefit to the government or adequate justification for a cost increase to the government.

E. Shop drawings of submitted item(s) including wiring or layout diagrams.

If there are any modifications necessary to facilitate installation, a set of drawings showing installation of specified item and a set showing how the submittal item will be installed shall be submitted to the C.O.R.

If the specified item is to be accessible, the submittal item needs to meet current Americans with Disabilities Act Accessibility Guidelines (ADAAG) or Forest Service Accessibility Guidelines and show to be installed for accessibility on submitted drawings, not just state it is available as accessible.

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

Submittals are required per the following sections:

END OF SPECIFICATION 01300

DIVISION 1-GENERAL REQUIREMENTS

01500 – TEMPORARY FACILITIES AND CONTROLS

PART 1 – GENERAL

1.1 – Summary A. This Section includes requirements for temporary facilities and controls, including temporary utilities, support facilities, and security and protection facilities.

PART 2 – PRODUCTS

PART 3 – EXECUTION

B. Site Enclosure Fence: When excavation begins, install enclosure fence. Locate where indicated, or enclose entire Project site or portion determined sufficient to accommodate construction operations. Install in a manner that will prevent people, dogs, and other animals from easily entering sites.

C. Barricades, Warning Signs, and Lights: Comply with standards and code requirements for erecting structurally adequate barricades. Paint with appropriate colors, graphics, and warning signs to inform personnel and public of possible hazard. Where appropriate and needed, provide lighting, including flashing red or amber lights.

END OF SECTION 01500

01601 – MOBILIZATION

PART 1 – GENERAL

1.1 - Description This work shall consist of 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 on the project site.

PART 2 – PRODUCTS

None

PART 3 – EXECUTION

None

PART 4 – MEASUREMENT AND PAYMENT

Progress payments will be made as follows:

The Contractor can request payment for performance and payment bonds. The amount of the premium, including coinsurance and reinsurance agreements, will be paid 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.

(a) 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.

(b) 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.

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

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 Contracting Officer. In no circumstance will the total amount of this contract be increased as a result of bonding costs exceeding the total contract amount of this pay item.

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

4.2 – Payment

Payment will be made under:

PAY ITEM DESCRIPTION PAY UNIT

01601(01) Mobilization -Oak Hill Snow Play Area LS

END OF SPECIFICATION 01601

01620 – STORAGE AND PROTECTION

PART 1 - GENERAL

1.1 - Description This section of work covers storage and protection procedures for the products scheduled for use.

1.2 - Related Work Specified Elsewhere 01300 - Submittals

PART 2 - PRODUCTS

None

PART 3 - EXECUTION

3.1 – Manufacturer’s Recommendations Except as otherwise approved by the Engineer, determine and comply with manufacturer’s instructions on product handling, storage and protection.

3.2 - Packing Deliver products to the job site in the manufacturer’s original container, with the labels intact and legible.

1. Maintain packaged materials with seals unbroken and labels intact until time of use.

2. Promptly remove damaged material and unsuitable items from the job site, and promptly replace with material meeting the specified requirements at no additional cost to the Forest Service.

The Engineer may reject as non-complying such material and products that do not bear identification satisfactory to the Forest Service as to the manufacturer, grade, quality and other pertinent information.

All product literature, warranties and operating instructions must be intact and placed in a binder and transmitted to the Forest Service.

3.3 – Protection Maintain finished surfaces clean, unmarred and suitably protected until accepted by the Forest Service.

3.4 – Repairs and Replacements In event of damage, promptly make replacements and repairs to the approval of the Forest Service and at no additional cost to the Forest Service.

PART 4 - MEASUREMENT AND PAYMENT

4.1 - Measurement There will be no separate measurement for this section.

4.2 - Payment This work is incidental to other items in the contract and direct separate item payment will not be made.

END OF SPECIFICATION 01620

01710 – CLEANING

PART 1 - GENERAL

1.1 - Description Throughout the construction period, maintain the construction site and facilities in an orderly and clean manner as described in this Section.

PART 2 - PRODUCTS

2.1 – Cleaning Materials and Equipment Provide required personnel, equipment and materials as needed to maintain the specified standard.

2.2 – Compatibility Use only the cleaning materials and equipment, which are compatible with the surface being cleaned, as recommended by the manufacturer of the cleaning material.

PART 3 - EXECUTION

3.1 – Progress Cleaning Retain stored items in an orderly arrangement allowing maximum access, not impeding traffic or drainage, and providing required protection of materials.

Do not allow accumulation of scrap, debris, waste material and other items not required for construction of this work.

Provide adequate storage for all items awaiting removal from the job site, observing requirements for fire protection and protection of the ecology.

3.2 – Site Daily, and more often if necessary, inspect the site and pick up all scrap, debris and waste material. Remove such items to the place designated for their storage.

Maintain the site in a neat and orderly condition at all times.

Clean mud and debris from roadways or highways adjacent to the project site daily.

3.3 – Structure At least weekly, inspect the structures and pick up all scrap, debris and waste material and remove them to the place designated for their storage.

“Clean” for the purpose of this paragraph shall be interpreted a meaning free from material capable of being removed by reasonable effort with a handheld broom.

3.4 – Final Cleaning Prior to completion of the work, remove from the job site all tools, surplus materials, equipment, scrap, debris and waste.

Structures:

Final cleaning of the project site shall be approved by the Forest Service prior to final acceptance of the work.

END OF SECTION 01710

DIVISION 2 - SITE WORK

02071 – REMOVAL OF STRUCTURES AND OBSTRUCTIONS

PART 1 - GENERAL

1.1 - Description This section specifies work requiring the waste pumping of existing toilet vaults, removal and disposal of all structures and obstructions within the project limits which have been SHOWN OR SPECIFIED ON THE DRAWINGS.

1.2 - Material Classification

Material to be excavated is unclassified. The Contractor is advised to classify the material to their satisfaction.

1.3 - Related Work Specified Elsewhere

PART 2 - PRODUCTS

None.

PART 3 - EXECUTION

3.1 – Removal of Obstructions

Remove all obstructions SHOWN OR SPECIFIED ON THE DRAWINGS. Removal shall include all toilet building materials, debris, and all concrete sidewalk SHOWN OR SPECIFIED ON THE DRAWINGS or in the specifications. All materials removed and designated for disposal AS SHOWN ON THE DRAWINGS OR SPECIFICATIONS shall be removed from National Forest Lands and disposed of in accordance with local, state and federal regulations regarding disposal of construction waste unless otherwise SHOWN ON THE DRAWINGS

3.2 – Waste Pumping

Vaults SHOWN OR SPECIFIED ON THE DRAWINGS shall have the waste pumped and removed from the site prior to any demolition work beginning.

3.3 – Backfill and Disposal

All voids left after removal, not being incorporated into the work, shall be backfilled and compacted in accordance with Section 02224.

PART 4 - MEASUREMENT AND PAYMENT

4.1 - Measurement There will be no separate measurement for this section.

4.2 - Payment

This work will be paid at the contract unit price, which will be full compensation for all asphalt cutting and removal of cut asphalt sections in accordance with these specifications and as SHOWN ON THE DRAWINGS.

Payment will be made under:

02512 - Pay Item Description Pay Unit

02512 - 35

02512 - 02071(01) Oak Hill Snow Play Area – (2) toilet building demo EA

Additive:

END OF SPECIFICATION 02071

DIVISION 2 – SITE WORK

02220 – EXCAVATION AND BACKFILL FOR BUILDINGS/STRUCTURES

02220-4

02220-23

This section covers excavation; furnishing, hauling, and placing backfill material; watering; compaction; disposal of excess or unsuitable excavated material; final grading for all buildings. Borrow material and haul will be considered incidental in the contract and a direct separate item payment will not be made.

02220-22

1.2 - Related Sections

02224 – Excavation, Embankment and Backfill

1.3 - Material Classification

Material to be excavated is unclassified. Contractor is advised to classify the material to their satisfaction.

02220-23

1.4 – Approvals Required

02220-24

Excavation: Notify Engineer when excavation is completed. Do not place concrete, block, tanks or backfill until the excavation is approved by the Engineer.

Backfill: Do not place backfill until construction of the structure to be backfilled against is approved by the Engineer.

02220-24

1.5 – Applicable Codes

Operations shall be in compliance with the requirements and restrictions of OSHA, the Arizona Occupational Safety and Health Code, and the Workman’s Compensation Board.

2.1 - Backfill Materials

Backfill materials shall be readily compactable, excavated material free of frozen or organic material, highly plastic clay or other objectionable material and shall contain no lumps or rock larger than 3 inches.

All fill dirt required for the building shall be examined by the Engineer to ensure that it is of low swell potential and free of organic or otherwise deleterious material.

2.2 - Water

02220-5 Water shall be reasonably clean and free of injurious substances.

2.3 - Borrow

02220-5 Borrow material shall conform to Sections 02220 – Excavation, Embankment and Backfill for Buildings/Structures and 02224 – Excavation, Embankment and Backfill. Borrow material will be available from commercial source pits

PART 3 - EXECUTION

3.1 - Excavation

The Contractor is responsible for ensuring that excavation activities do not damage existing structures and improvements.

Excavate sub-soil in accordance with lines and levels required for construction of the work, including space for forms, bracing and shoring, and to permit inspection. All excavation of every description and of whatever substances encountered shall be performed to the depth indicated on the drawings. Undercutting will not be permitted unless approved by the Engineer.

Trim any roots flush with the walls.

The contractor should expect to encounter rock during excavation activities.

3.2 – Excavated Material

Pile topsoil separately from underlying material. All material shall be piled in an orderly manner with a sufficient distance from the banks of the excavation to avoid overloading and to prevent slides or cave-ins.

Rocks too large to be incorporated into backfill shall be broken for incorporation into the backfill or moved to locations approved by the Engineer. Rocks may be broken by mechanical means. Location approved by Engineer is on site and will be delineated on the ground.

No excavated material shall be placed in lakes or live streams.

All suitable excavated materials shall be used as backfill. All excavated materials not required or unsuitable for backfill shall be utilized on the site or removed to waste areas off site as directed by the Engineer.

3.3 – Over-excavation

When material at the maximum depth of excavation shown on the drawings is soft or otherwise unsuitable for the construction intended, the unsuitable material shall be removed and the excavation restored to grade by backfilling with aggregate base course.

Inadvertent excavation below specified grades in areas where material is suitable for the construction intended shall be handled as described above at no cost to the Government.

3.4 – Wet Excavation

02220-25 Prevent surface water from entering the excavation.

If groundwater is encountered during excavation for structures, notify the Engineer immediately.

Remove standing water from the excavation prior to backfilling.

3.5 – Hammered Excavation

Material determined to be unrippable may be broken down by hydraulic hammer when approved by the Engineer.

3.6 – Backsloping, Sheeting and Shoring

Whenever depth of excavation exceeds 5 feet, the surface shall be sloped back at a 1-1/2 to 1 slope or the excavation shall be shored. Backsloping will be allowed only upon prior written approval by the Engineer.

Remove all shoring and sheeting when construction is completed. Withdraw shoring in such a manner as to prevent walls from caving in while backfilling.

3.7 - Backfill

02220-26 Prior to backfilling, remove forms and clean trash and debris from excavation. Apply waterproofing as required.

Backfilling shall not begin until concrete or block structure has been in place for a minimum of 7 days and has attained sufficient strength to withstand imposed loads.

Backfilling against waterproofed wall shall be done so as not to break or puncture the waterproof application.

Backfill excavations as promptly as work permits, but not until completion of the following:

1. Acceptance of construction below finish grade including, where applicable, damp proofing, waterproofing, and perimeter insulation.

2. Inspection, testing, approval, and recording locations of underground utilities have been performed and recorded.

3. Obtaining approval from Engineer.

Fill must be wetted and thoroughly mixed in order to achieve optimum moisture content, +/- 2 percent (optimum to +/- 3 percent for under slab fill). Fill and backfill adjacent to structural walls shall be placed in 6-inch lifts and compacted uniformly throughout its entire depth to 95% per AASHTO T-99, Method C or D.

The contractor shall be responsible for all required testing in order to achieve the required results and no additional payment will be made for this work.

Heavy equipment for spreading and compacting backfill shall not be operated closer to foundation than a distance equal to the depth to the top of backfill for footings; the area remaining shall be compacted by power-driven hand tampers suitable for the material being compacted. Backfilling operations shall not cause a foundation to become "point loaded."

3.8 - Finish Grading

02220-25 All areas covered by the project including excavation and embankment areas and adjacent transition areas, shall be uniformly graded so that finished surfaces are at elevations indicated and approved by the Engineer. Slope grade away from structures a minimum of ¼-inch per foot unless otherwise indicated to provide drainage away from structures.

Finished slopes shall be left in a roughened condition to facilitate vegetative growth.

Loose rock, debris, and other loose material greater than 6” in diameter, shall be removed from the slope.

02220-65

The work specified herein will not be measured for payment.

02220-8

02220-3

This work is incidental to other items in this contract and direct separate item payment will not be made.

Borrow material and haul will be considered incidental in the contract and a direct separate item payment will not be made.

02220-48

END OF SPECIFICATION 02220

02224 – EXCAVATION, EMBANKMENT AND BACKFILL

02224 - 26

02224 - 26

02224 - 28

02224 - 35

This section specifies excavation, embankment and backfill, furnishing, hauling and placing of backfill and embankment material; watering; compaction; disposal of excess or unsuitable excavated material; final grading for concrete sidewalks. Borrow material and haul will be considered incidental in the contract and a direct separate item payment will not be made.

02224 -

1.2 - Material Classification

02224 - 28

02224 - Material to be excavated is unclassified. Contractor is advised to classify the material to their satisfaction.

1.3 - Related Work Specified Elsewhere

01030 – Noxious Weed Control 02220 - Excavation and Backfill for Buildings/Structures

02224 - 29

2.1 - Backfill Material

Backfill material shall be readily compactable excavated material free of frozen or organic material, highly plastic clay or other objectionable material and shall contain no rocks larger than 3 inches in diameter.

2.2 - Water

02224 - 30

Water shall be reasonably clean and free of injurious substances.

2.3 – Borrow Material

Borrow material shall conform to Sections 02224 – Excavation, Embankment and Backfill and 02220 – Excavation, and Backfill for Buildings/Structures. Borrow material will be available from commercial source pits.

3.1 - Excavation

02224 - 27 All suitable excavated materials shall be used in construction of embankments, slopes, and backfill.

No excavated material shall be placed in lakes or live streams.

Rocks too large to be incorporated into embankments shall be broken for incorporation into the embankment or relocated to locations approved by the Engineer for use as barrier rocks.

3.2 - Backfill

02224 - 36

General backfill shall be placed in horizontal layers not exceeding 6 inches (loose measure) and compacted. Each embankment layer shall be leveled and smoothed before compaction and placement of subsequent layers. Compaction shall be as shown in Section 3.6.

Finished surfaces shall be reasonably smooth, compacted, and shall drain without ponding.

Backfilling Adjacent to Concrete Remove all forms and clean the excavated area of all debris. Remove any standing water from excavation. Obtain approval from Engineer prior to placement of backfill. Do not backfill until concrete has been in place for a minimum of 7 days and has attained sufficient strength to withstand imposed loads.

3.3 - Embankment

Embankment shall be placed in horizontal layers not exceeding 6 inches (loose measure) and compacted.

02224 - 31 Bring all embankments to suitable elevations above grade to provide for anticipated settlement, shrinkage, and required compaction.

Embankment material shall not be dropped on any structure.

3.4 - Grading

02224 - 59

02224 - 59 All areas covered by the project including excavation and embankment areas and adjacent transition areas, shall be uniformly graded so that finished surfaces are at elevations indicated and approved by the Engineer. Slope grade away from structures a minimum of ¼-inch per foot unless otherwise indicated to provide drainage away from structures.

All areas covered by the project including excavation and embankment areas shall be final graded so that all ruts and berms are removed.

3.5 - Excess Excavated Material

All suitable excavated materials shall be used as backfill.

02220-33

All excavated materials not required or unsuitable for backfill shall be utilized on the site or removed to waste areas as directed by the Engineer.

3.6 - Compaction

Place suitable material in layers no more than 6 inches thick.

Placing individual rocks or boulders greater than 24 inches in diameter will NOT be permitted. Carefully distribute rocks and fill the voids with finer material to form a dense and compacted mass.

02224 - 3 Where material containing large amounts of rocks is used to construct embankments, make layers of sufficient thickness to accommodate the material involved. Construct a solid embankment with adequate compaction by working smaller rock and fines in with the larger rocks to fill the voids, and by operating hauling and spreading equipment uniformly over the full width of each layer as the embankment is constructed.

Ensure that the material is at moisture content suitable to obtain a mass that will not visibly deflect under the load of the hauling and spreading equipment. Material shall be compacted until visible deformation ceases or as deemed necessary by the Engineer.

02224 - 31

02224 - 37

02224 - 61

02224 - 32

There will be no separate measurement of this item.

This work is incidental to other items in the contract and direct and separate payment will not be made.

END OF SPECIFICATION 02224

02232 – AGGREGATE BASE COURSE

PART 1- GENERAL

1.1 – SUMMARY

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

1.2 - SUBMITTALS

A. As specified in specification 01300 “Submittals”.

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

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

D. Submit all Material and Compaction Test results directly to Contracting Officer (CO) from testing services, with copy to 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: ASTM D2487, percentage of wear of not more than 50.

C. Contractor shall furnish porous, free-draining granular material free of excess moisture, muck, frozen lumps, roots, sod, or other deleterious material.

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

SIEVE DESIGNATION

PERCENT PASSING

1 ¼” inch

No. 4 No. 8 No. 30 No. 200 38-65 25-60 10-40 3-12

1. The above materials shall meet the requirements of the MAG specification section 702 for Aggregate Base.

PART 3 – EXECUTION

3.1 – PLACING

A. 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 any one layer will not exceed six inches.

3.3 – COMPACTION

A. Compaction will be evaluated visually by the Contracting Officer’s Representative.

3.4 – SURFACE FINISHING

A. Compacted base course surface shall be smooth and free from waves and other irregularities. Unsatisfactory portions of base course shall be torn up, reworked, relaid, and rerolled, at no additional expense to the Government.

3.5 – MATERIAL ACCEPTANCE REQUIREMENTS

A. Acceptance will be based on samples and tests results.

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

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

END OF SECTION 02232

CAST-IN-PLACE CONCRETE – 03301 32

CONCRETE FINISHING – 03345 34

DIVISION 13 – SPECIAL CONSTRUCTION

13100 – PRECAST CONCRETE TOILET BUILDING

PART 1 - GENERAL

1.1 - Description

This section specifies the installation of a government-furnished precast concrete vault toilet and amenities.

1.2 - Related Work Specified Elsewhere

02232 – Aggregate Base Course 02220 – Excavation and Backfill for Buildings/Structures

PART 2 - PRODUCTS

2.1 - Precast Concrete Toilet

The toilet shall be government-furnished and delivered to the construction site. The toilets are manufactured by CXT Precast, Spokane, Wa. (1-800-696-5766), under contract. The model to be installed is the “Gunnison Vault Restroom”.

3.1 - Installation

The toilets shall be installed at the location as SHOWN ON THE DRAWINGS. The Contractor is responsible for the coordination of delivery and all site work necessary for the complete installation. Site work includes layout, excavation, leveling course, backfill, all required compaction including watering, and quality control.

The toilet manufacturer will deliver the toilet and off-load into the pre-excavated hole. The hole shall have a 4" compacted lift of aggregate base for leveling in the bottom. Compaction for the leveling course shall consist of 3 passes with a vibratory plate compactor. Backfill and compaction must take place during off-loading and assembly of building. Backfill and compaction will consist of 6” loose compacted lifts to the top of the vaults. All compaction efforts for the buildings shall be in accordance to 02220 – Excavation and Backfill for Building/Structures. The toilet is delivered on 18 wheel flat bed semi-truck. They are off-loaded with a hydraulic rubber-tired crane. The Contractor shall insure access to the site for toilet installation equipment.

3.2 - Coordination

The Contractor shall coordinate delivery of the toilet with the manufacturer. Coordination shall begin upon contract award and continue to installation date. The Engineer shall be on site during delivery and installation.

PART 4 - MEASUREMENT AND PAYMENT

4.1 - Method of Measurement

Measurement will be for each precast concrete toilet building installed complete including delivery coordination, excavation, aggregate base, backfill, compaction, final grading AS SHOWN ON THE DRAWINGS.

4.2 - Basis of Payment

Payment will be made at the contract unit price for each item completed and accepted.

Payment will be made under:

PAY ITEM DESCRIPTION PAY UNIT

13100(02) Precast Concrete Toilet Installation (single) LS

END OF SPECIFICATION 13100