2. Supplemental Specifications.pdf

INDEX OF SPECIFICATIONS

DIVISION 1: GENERAL REQUIREMENTS

Section 01010 - Summary of Work Section 01330 - Shop Drawings and Submittals Section 01310 - Project Management and Coordination Section 01400 - Quality Requirements Section 01505 - Mobilization Section 01600 - Government Facilities

DIVISION 2: SITEWORK

Section 02300 - Earthwork

DIVISION 3: CONCRETE

Section 03300 - Cast-in-Place Concrete

DIVISION 8: OPENINGS

Section 081113 – Hollow Metal Doors and Frames Section 083613 – Sectional Overhead Doors Section 087100 – Door Hardware

DIVISION 9: FINISHES

Section 099000 -Painting

DIVISION 13: SPECIAL CONSTRUCTION

Section 13125 - Metal Building Systems

DIVISION 23: HEATING, VENTILATING AND AIR CONDITIONING

Section 230000 – General Mechanical Requirements Section 230500 – Heating, Ventilating, and Air Conditioning

DIVISION 26 ELECTRICAL

Section 260500 – Common Work Results for Electrical Section 260519 – Low-Voltage Electrical Power Conductors and Cables Section 260526 – Grounding and Bonding for Electrical Systems Section 262816 – Enclosed Switches and Circuit Breakers Section 265100 - Lighting

07 – CON – Chuchupate Engine Garage Los Padres National Forest

SECTION 01010

SUMMARY OF WORK

PART 1 – GENERAL

1.1 SCOPE

A. Existing conditions: Forest Service Administrative Site.

B. This project consists of site improvements at the Chuchupate District Office & Fire Compound located on the Mt Pinos Ranger District of the Los Padres National Forest. Contract includes, but is not limited to, the following items of work:

1. Grading Plan Development, as required for placement of concrete slab-on-grade.

2. Provide and install pre-engineered metal building (40’ X20’) to house Forest Service Fire

Engine.

4. Construction of 6” concrete slab and apron, to place pre-engineered metal building on top of.

5. Provide and Install 36" X 80" Steel Exterior Door, Including Finish Hardware and

Associated Work.

6. Provide and Install 12' X 12' Sectional Bay Door, Including Electrically Operated Opener and Associated Work.

7. Provide and Install Unit Heater (36,000 BTU) and associated work.

8. Provide and Install New Electrical Service to new building (Approx 50LF) Including

Wires, Conduit, and new panel with circuit breakers and associated work.

9. Provide and Install 3 Exterior Lights and 3 Interior lights and Interior Electrical Outlets, and associated work.

10. Obtain permits if required for the work listed above and any other permits necessary to complete the project. All permits are the responsibility of the contractor, and will not be provided by the government.

1.2 PROJECT LOCATION

A. The Project site is located at the Mt Pinos District Office on Los Padres National Forest. The District Office Address is: 34580 Lockwood Valley Road, Frazier Park CA, 93225.

1.3 MEASUREMENT AND PAYMENT

A. The work shall be measured for each item as listed below and as shown on the Schedule of Items.

1. Lump Sum Quantity (LSQ) shall be measured as one job and shall include all mobilization, preparation work, new construction, site work, cleanup and the like.

2. Actual Quantity (AQ) shall be measured as the actual work completed as described in Contract Specifications herein.

3. Design Quantity (DQ) shall be based upon the original design data available prior to advertising project. Original design data include the preliminary survey information, design assumptions, calculations, drawings and the presentation in the contract.

B. Payment: Payment for the quantity or unit, as measured above will be at the contract unit price as shown on the Schedule of Items. Payment will constitute full compensation for all labor, equipment, materials and incidentals necessary to complete the work described herein.

1.4 DAYS/HOURS OF OPERATION

A. The Contractor’s hours of operation shall be restricted to 7:30 am to 5:00 pm, Monday through Friday. In addition, the work shall be shut down during the following periods: Work shall be shut down on Saturdays, Sundays and all federally listed Holidays. Contract time has been adjusted to reflect these periods of shutdown.

1.5 CONTRACTOR’S SCHEDULE

A. The Contractor shall provide the Government with a complete work schedule describing the different work activities and when they will be initiated and completed at the Prework meeting.

The Contractor will be expected to follow this schedule during the course of the contract or shall submit a revised schedule within 48 hours of any unforeseen delays or changes.

END OF SECTION 01010

SECTION 01330

SHOP DRAWINGS AND SUBMITTALS

A. This work consists of furnishing technical information, samples and shop drawings, when required by other sections of this contract, and for the approval of material and product substitutions. Work includes:

1. Shop Drawings, Layouts and Engineered Design.

2. Samples.

3. Catalog Data.

4. Installation, Operation and Maintenance Instructions.

1.2 COMPLETENESS OF SUBMITTALS

A. Submittals shall include all pertinent data required to understand the quality of components, dimensional relationships, integration with other materials, assembly techniques, structural aspects, color, finish, texture, and other such characteristics as may be necessary to fully describe the item and its intended use.

B. Incomplete submittals may be cause for rejection. Additional contract time will not be allowed to compensate for incomplete submittal packages. The Contractor’s attention is directed to Paragraph 3.01 and 3.04 of this section.

1.3 SUBMITTALS AND SUBSTITUTIONS

A. The Contractor shall submit all required information or any submittals to be considered as an “or equal” substitution at the Pre-work Meeting or within 15 days of Notice to Proceed. The Government shall have 21 days to review and approve all information. No work shall be initiated until all submittals have been reviewed and approved in writing by the Contracting Officer. After this period, no substitution in products shall be considered and the Contractor shall secure and install products specified or approved. All re-submittals will incur an additional 21 days for review and approval.

1.4 MEASUREMENT AND PAYMENT

A. No separate measurement or payment will be made for work specified in this section.

PART 2 – PRODUCTS (Not Used)

PART 3 – EXECUTION

3.1 SHOP DRAWINGS, LAYOUTS, ENGINEERED DESIGNS

A. Original Submittal: A reproducible and four copies of all shop drawings, layouts, details or engineered designs shall be submitted for approval prior to fabrication, installation or order placement to allow for Government review. The reproducible will be retained by the Contracting Officer. When applicable, the shop drawings shall be accompanied with calculations, engineering reports or results, and show all work to determine size, locations, grades and the like, used to specify the components to qualify for a complete submittal.

Engineered designs or systems shall bare the wet stamp of a California registered engineer of the applicable field of design.

B. Re-submittal: When a re-submittal is required, one print so indicating will be returned to the

Contractor. After revision of the original, a new reproducible and four copies shall be submitted for approval.

C. Approval: Once approved, stamped documents will be returned to the Contractor and shall be complied with as noted. Variation from the approved documents shall be likewise submitted and approved before being carried out.

3.2 SAMPLES

A. Original Submittal: Two samples of each item for which samples are required, unless otherwise specified, shall be furnished for approval. Approval shall be obtained prior to delivery of the material to the project site. These samples shall be representative of the actual material proposed for use in the project and of sufficient size to demonstrate design, color, texture and finish as they will appear in the completed installation.

B. Re-submittals: All rejected samples will be returned upon request and any or all re-submittals required shall consist of two new samples.

C. Approval: Upon approval, one sample, so noted will be returned and the remainder will be retained by the Contracting Officer until completion of the work. When requested all approved samples will be returned for installation providing identity is maintained in an approved manner until final acceptance of the project.

3.3 CATALOG DATA

A. Submittals: Five copies of catalog data are required for the original submittal and each re-submittal. Catalog data shall be submitted along with shop drawings. One copy will normally be returned unless additional copies are requested.

B. Data: Each submittal shall have all pertinent data contained therein that is applicable to the item submitted for approval.

3.4 INSTALLATION, OPERATIONS AND MAINTENANCE INSTRUCTIONS

A. Submittals: Five copies of instructions are required for the original submittal and each re-submittal. Instructions may be submitted along with catalog data. One copy will normally be returned unless additional copies are requested. Note: Catalog data by itself does not constitute a set of instructions and shall be cause for rejecting the submittals.

B. Data: Each submittal shall have all pertinent data contained therein that is applicable to the item submitted for approval.

3.5 IDENTIFICATION

A. Each shop drawing, catalog brochure or page submitted shall identify the item being submitted for approval. A cover sheet shall be provided with each submittal identifying project name, general contractor, and submittal number.

3.6 CONTRACTOR’S RESPONSIBILITY

A. Representation: By the submittal of any shop drawing or catalog data, the contractor thereby represents that he has determined and verified all field measurements, field construction criteria, materials, dimensions, catalog numbers and other essential data and has coordinated same with the contract documents and other approved submittals.

B. Deviations: Approval of shop drawings, samples, or catalog data shall not relieve the contractor from responsibility for errors or omissions therein.

C. Prohibitions: No portion of the work requiring a shop drawing, sample or catalog data shall commence nor fabrications begin prior to approval of such items.

D. Coordination: Contractor shall be responsible for coordination between trades to insure total compatibility with or between substituted items and those existing, specified, or otherwise provided. Alterations required to achieve compatibility with or between submitted items, shall be accomplished without sacrifice of performance and at no additional cost to the Government.

E. Verification: Any change from elements as originally designed shall be substantiated by calculations and/or data certified by a Registered Engineer or Architect licensed in California.

END OF SECTION 01330

SECTION 01310

PROJECT MANAGEMENT AND COORDINATION

A. This section specifies administrative and supervisory requirements necessary for project coordination including, but not necessarily limited to:

1. General project coordination procedures.

2. Contractor’s personnel.

3. General installation provisions.

4. Cleaning and protection.

1.2 COORDINATION

A. Coordination: Coordinate construction activities included under various Sections of these specifications to assure efficient and orderly installation of each part of the work. Coordinate construction operations included under different Sections of the specifications that are dependent upon each other for proper installation, connection, and operation.

1. Where installation of one part of the work is dependent on installation of other components, either before or after its own installation, schedule construction activities in the sequence required to obtain the best results.

2. Where availability of space is limited, coordinate installation of different components to assure maximum accessibility for required maintenance, service and repair.

3. Make adequate provisions to accommodate items scheduled for later installation.

B. Conservation: Coordinate construction activities to ensure that operations are carried out with consideration given to conservation of energy, water, and materials.

1.3 SUBMITTALS

A. Coordination Drawings: Prepare and submit coordination drawings where close and careful coordination is required for installation of products and materials fabricated off-site by separate entities, and where limited space availability necessitates maximum utilization of space for efficient installation of different components.

1. Indicate required installation sequences.

2. Comply with requirements contained in Section 01300, Submittals.

1.4 MEASUREMENT AND PAYMENT

3.1 GENERAL INSTALLATION PROVISION

A. Inspection of Condition: Require the Installer of each major component to inspect both the substrate and conditions under which work is to be performed. Do not proceed until unsatisfactory conditions have been corrected in an acceptable manner.

B. Manufacturer’s Instructions: Comply with manufacturer’s installation instructions and recommendations, to the extent that those instructions and recommendations are more explicit or stringent than requirements contained in contract documents.

C. Inspect materials or equipment immediately upon delivery and again prior to installation.

Reject damaged and defective items.

D. Provide attachment and connection devices and methods necessary for securing work. Secure work true to line and level. Allow for expansion and building movement.

E. Visual Effects: Provide uniform joint widths in exposed work. Arrange joints in exposed work to obtain the best visual effect. Refer questionable choices to the Contracting Officer for final decision.

F. Recheck measurements and dimensions, before starting each installation.

G. Install each component during weather conditions and project status that will ensure the best possible results. Isolate each part of the completed construction from incompatible material as necessary to prevent deterioration.

H. Coordinate temporary enclosures with required inspections and tests, to minimize the necessity of uncovering completed construction for that purpose.

I. Mounting Heights: Where mounting heights are not indicated, install individual components as standard mounting heights recognized within the industry for the particular application indicated. Refer questionable mounting height decisions to the Contracting Officer for final decision.

3.2 CLEANING AND PROTECTION

A. During handling and installation, clean and protect construction in progress and adjoining materials in place. Apply protective covering where required to ensure protection from damage or deterioration at Substantial Completion.

A. Clean and maintain completed construction as frequently as necessary through the remainder of the construction period. Adjust and lubricate operable components to ensure operability without damaging effects.

END OF SECTION 01310

SECTION 01400

QUALITY REQUIREMENTS

1.1 SUMMARY

A. This section includes administrative and procedural requirements for quality assurance and quality control.

B. Testing and inspecting services are required to verify compliance with requirements specified or indicated. These services do not relieve Contractor of responsibility for compliance with the Contract Document requirements.

1. Specified test, inspections, and related actions do not limit Contractor’s quality-control procedures that facilitate compliance with the Contract Document requirements.

2. Requirements for Contractor to provide quality control services required by Contracting Officer, Government, or authorities having jurisdiction are not limited by provisions of the Section.

C. See other Sections for specific test and inspection requirements, and as listed herein.

1.2 DEFINITIONS

A. Quality-Assurance Services: Activities, actions, and procedures performed before and during execution of the work to guard against defects and deficiencies and ensure that proposed construction complies with requirements.

B. Quality-Control Services: Tests, inspections, procedures, and related actions during and after execution of the work to evaluate that completed construction complies with requirements.

Services do not include contract enforcement activities performed by Contracting Officer.

C. Testing Agency: An entity engaged to perform specific tests, inspections, or both. Testing laboratory shall mean the same as testing agency.

1.3 DELEGATED DESIGN

A. Performance and Design Criteria: Where professional design services or certifications by a design professional are specifically required of Contractor by the Contract Documents, provide products and systems complying with specific performance and design criteria indicated.

1. If Criteria indicated are not sufficient to perform services or certification required, submit a written request for additional information to Contracting Officer.

1.4 SUBMITTALS

A. Qualifications Data: For testing agencies specified in “Quality Assurance” Article to demonstrate their capabilities and experience. Include proof of qualifications in the form of a recent report on the inspection of the testing agency by a recognized authority.

B. Delegated-Design Submittal: In addition to Shop Drawings, Product Data, and other required submittals, submit a statement, signed and sealed by the responsible design professional, for each product and system specifically assigned to Contractor to be designed or certified by a design professional, indicating that the products and systems are in compliance with performance and design criteria indicated. Include list of codes, loads, and other factors used in performing these services.

C. Reports: Prepare and submit certified written reports that include the following:

1. Date of issue.

2. Project title and number.

3. Name, address, and telephone number of testing agency.

4. Dates and locations of samples and tests or inspection.

5. Names of individuals making test and inspections.

6. Description of the work and test and inspection method.

7. Identification of product and Specification Section.

8. Complete test or inspection data.

9. Test and inspection results and an interpretation of test results.

10. Ambient conditions at time of sample taking and testing and inspecting.

11. Comments or professional opinion on whether tested or inspected work complies with the

Contract Document requirements.

12. Name and signature of laboratory inspector.

13. Recommendation on retesting and reinspecting.

D. Permits, Licenses, and Certificates: For Government’s records, submit copies of permits, licenses, certifications, inspection reports, releases, jurisdictional settlements, notices, receipts for fee payments, judgments, correspondence, records, and similar documents, established for compliance with standards and regulations bearing on performance of the work.

1.5 QUALITY ASSURANCE

A. Fabricator Qualifications: A firm experienced in producing products similar to those indicated for this Project and with a record of successful in-service performance, as well as sufficient production capacity to produce required units.

B. Factory-Authorized Service Representative Qualifications: An authorized representative of manufacturer who is trained and approved by manufacturer to inspect installation of manufacturer’s products that are similar in material, design, and extent to those indicated for this Project.

C. Contractor’s subcontractor or staff Qualifications: A firm or individual experienced in installing, erecting, or assembling work similar in material, design, and extent to that indicated for this Project, whose work has resulted in construction with a record of successful in-service performance.

D. Manufacturer Qualifications: A firm experienced in manufacturing products or systems similar to those indicated for this Project and with a record of successful in-service performance.

E. Testing Company Qualifications: An agency with the experience and capability to conduct testing and inspecting indicated, as documented by ASTM E548, and that specializes in types of tests and inspections to be performed.

1.6 QUALITY CONTROL

A. Contractor Responsibilities: Unless otherwise indicated, provide quality control services specified and required by authorities having jurisdiction.

1. Contractor’s responsibility is to engage a qualified testing lab to perform these quality-control services.

a. Contractor shall not employ the same entity engaged by Government, unless agreed to in writing by Government.

2. Notify testing agencies at least 24 hours in advance of time when work that requires testing or inspecting will be performed.

3. Quality-control services are indicated as Contractor’s responsibility; submit a certified written report, in duplicate, of each quality-control service. Cost for retesting and reinspecting construction that replaces or is necessitated by work that failed to comply with the Contract Documents will be charged to Contractor.

4. Testing and inspecting requested by Contractor and not required by the Contract

Documents are Contractor’s responsibility.

5. Submit additional copies of each written report directly to authorities having jurisdiction, when they so direct.

B. Required Tests and Inspections: Contractor will engage a testing lab to conduct tests and inspections required by the specifications and drawings.

1. Testing company will notify Contracting Officer and Contractor promptly of irregularities and deficiencies observed in the work during performance of its services.

2. Testing company will submit a certified written report of each test, inspection, and similar quality-control service to Contracting Officer with copy to Contractor and to authorities having jurisdiction within three days of test being performed.

3. Testing company will submit a compiled report of all required tests and inspections at substantial completion, which includes a list of unresolved deficiencies.

4. Testing company will interpret tests and inspections and state in each report whether tested and inspected work complies with or deviates from the contract documents.

5. Testing company will retest and reinspect corrected work.

C. Manufacturer’s Field Services: Where indicated, engage a factory-authorized service representative to inspect field-assembled components and equipment installation, including service connections. Report results in writing.

D. Retesting/Reinspecting: Regardless of whether original tests or inspections were Contractor’s responsibility, provide quality control services, including retesting and reinspecting, for construction that revised or replaced work that failed to comply with requirements established by the contract documents.

E. Testing company Responsibilities: Cooperate with Contracting Officer and Contractor in performance of duties. Provide qualified personnel to perform required tests and inspections.

1. Notify Contracting Officer and Contractor promptly of irregularities or deficiencies observed in the work during performance of its services.

2. Interpret tests and inspections and state in each report whether tested and inspected work complies with or deviates from requirements.

3. Submit a certified written report, in duplicate, of each test, inspection, and similar quality-control service through Contractor.

4. Do not release, revoke, alter, or increase requirements of the contract documents or approve or accept any portion of the work.

5. Do not perform any duties of Contractor.

F. Associated Services: Cooperate with a company performing required test, inspections, and similar quality-control services, and provide reasonable auxiliary services as requested. Notify agency sufficiently in advance of operations to permit assignment of personnel. Provide the following:

1. Access to the work.

2. Incidental labor and facilities necessary to facilitate tests and inspections.

3. Adequate quantities of representative samples of materials that require testing and inspecting. Assist agency in obtaining samples.

4. Facilities for storage and field-curing of test samples.

5. Delivery of samples to testing agencies.

6. Preliminary design mix proposed for use for material mixes that require control by testing agency.

7. Security and protection for samples and for testing and inspecting equipment at Project site.

G. Coordination: Coordinate sequence of activities to accommodate required quality-assurance and quality-control services with a minimum of delay and to avoid necessity of removing and replacing construction to accommodate testing and inspecting.

1. Schedule time for tests, inspections, obtaining samples, and similar activities.

1.7 MEASUREMENT AND PAYMENT

3.1 REPAIR AND PROTECTION

A. General: On completion of testing, inspecting, sample testing, and similar services, repair damaged construction and restore substrates and finishes.

1. Provide materials and comply with installation requirements specified in other Sections of these Specifications. Restore patched areas and extend restoration into adjoining areas in a manner that eliminates evidence of patching.

B. Protect construction exposed by or for quality-control service activities.

C. Repair and protection are Contractor’s responsibility, regardless of the assignment of responsibility for quality-control services.

END OF SECTION 01400

SECTION 01505

MOBILIZATION

A. This work consists 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.

1.2 MEASUREMENT AND PAYMENT

A. The accepted quantities will be paid for at the contract unit price for item 01505, Mobilization.

B. Progress payments will be made as follows:

1. The Government will pay to the Contractor in the first progress payment the total premium paid by the Contractor to obtain bonds. This payment shall not be in addition to the contract price and will be included in Item 01505, Mobilization.

2. 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.

3. 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.

4. Upon completion of all work on the project, any unpaid amount for item 01505, Mobilization, will be paid.

C. The total of all payments will not exceed the original contract amount for item 01505, Mobilization.

PART 3 – EXECUTION (Not Used)

END OF SECTION 01505

SECTION 01600

USE OF GOVERNMENT FACILITIES

A. This work consists of the use, by the Contractor, of areas and facilities owned by the Government during the construction of this project.

1.2 MEASUREMENT AND PAYMENT

A. No separate payment will be made for work specified in this section.

3.1 All fire operations and District Office operations will continue to operate during construction operations. The Contractor’s operations will not interfere with the District staff or visitors. Contractor shall be responsible for construction signing and controlling access.

3.2 No water, telephone, electrical, or sanitary facilities are available for the Contractor’s use. The

Contractor shall provide sanitary facilities for the work site.

3.3 The Contractor's use of the premises is limited to the project construction limits unless otherwise agreed upon with the Contracting Officer. With approval of the Contracting Officer, the Contractor may store equipment and a material within the project construction limits or other designated areas, but will be responsible for security. No overnight camping by the Contractor’s personnel will be allowed, unless approved in advance by the Contracting Officer. The Contractor shall maintain a clean working area throughout the progress of work.

3.4 The Contractor shall take all reasonable precautions to ensure a safe construction area.

3.5 The Contractor shall return the area designated for equipment and materials storage to the original state at the completion of the project.

END OF SECTION 01600

SECTION 02300

EARTHWORK

1.1 DESCRIPTION

A. This work consists of providing equipment and labor necessary to complete site excavation;

and backfilling for the installation of all structures.

B. Earthwork shall include but is not limited to the following:

1. Fill and backfill to proposed grades, including the importing of approved off-site material.

2. Excavate unsuitable subgrade material and replace with acceptable material.

3. Compact subgrade, backfill material where required.

4. Finish grading. Finish grading to include shaping, excavating and/or filling to the established sub grade shown on the contractor generated drawings, details or as staked.

Grading work, excavation and embankment includes, but is not limited to: building slab excavation, building apron, access walkways and aprons, and grading to tie in proposed site work to existing adjacent terrain.

5. Provide erosion, sedimentation, and dust control in accordance with local ordinance and

State of California requirements.

1.2 VERIFICATION OF CONDITIONS

A. The Contractor shall begin work by careful examination of existing conditions and information, shall become knowledgeable as to the nature and location of the work, the conformation of the ground, the nature of subsoil conditions, groundwater conditions, nature and extent of materials or existing improvements to be encountered and any and all determinable matters that can affect the work.

1.3 SUBMITTALS

A. All submittals shall conform to Section 01300 Shop Drawings and Submittals.

1. Material Certificates: Provide materials certificates signed by manufacturer certifying that each material tem complies with specified requirements.

2. Test Reports: Submit the following reports directly to Contracting Officer from the testing services, with copy to Contractor.

a. Test reports on imported materials for compliance with specification.

b. Verification of suitability of each material, in accordance with specified requirements.

c. Field reports, in-place soil density tests.

3. Storm water pollution protection plan.

1.4 QUALITY ASSURANCE

A. Testing and Inspection Service: Contractor shall contract with and pay for a state certified independent geotechnical testing laboratory to perform soil testing and inspection service during earthwork operations.

1.5 MEASUREMENT AND PAYMENT

A. Measurement for work performed under this section will be made under those pay items as listed in the Schedule of Items. Payment will be made at the contract unit price designated in the Schedule of Items, and will constitute full compensation for all materials, labor, equipment, testing and incidentals necessary to complete the work.

PART 2 – PRODUCTS

2.1 FILL MATERIALS

A. GENERAL

1. The Contracting Officer shall approve all backfill material. Materials used for backfill shall be free from frozen or organic matter and contain no deleterious substances. Backfill materials shall be obtained from commercial sources.

B. GENERAL BACKFILL

1. Shall consist primarily of commercial materials composed of predominately silty sand material. All General Backfill material shall be approved by the Contracting Officer.

Imported fill shall be non expansive and predominately granular soil or soil-rock mixture, which is free from organic matter, and deleterious substances including but not limited to organic matter, drain tile, abandoned conduit, broken concrete and rebar.

2. The following criteria shall be met:

a. Maximum Particle Size: 3" greatest dimension, ASTM C136.

C. SURPLUS EXCAVATION

1. Acceptable surplus excavation shall be obtained from on-site excavation and demolition activities that is well graded with no rocks having a dimension greater than six inches.

2. Excess material meeting the requirements of "General Fill" may also be used as surplus excavation.

2.2 EROSION, SEDIMENTATION AND DUST CONTROL

A. FIBER ROLL

1. Fiber roll shall be used in conjunction with other Caltrans Best Management Practices soil stabilization control as approved by the Contracting Officer. Fiber roll materials shall comply with Caltrans Best Management Practices Manual, November 2000. Fiber roll material shall be certified in writing by manufacturer to be seed free and weed free.

2.3 COMPACTION EQUIPMENT

A. Compaction equipment shall be capable of obtaining compaction requirements without detrimentally affecting the compacted material. The compacting units may be of any type, provided they are capable of compacting each lift of material as specified and meet the minimum requirements contained herein.

B. Minimum requirements for rollers are as follows:

1. Tamping or sheep foot rollers shall meet the following minimum requirements:

a. Diameter - 40"

b. Completely filled with liquid.

2. Grid rollers shall be capable of exerting a force of 250 pounds per inch of width of roller drum.

3. Steel-wheel rollers, other than vibratory, shall be capable of exerting a force of not less than 250 pounds per inch of width of the compression roll or rolls.

4. Vibratory steel-wheel rollers shall have a minimum weight of 6 tons. The compactor shall be equipped with amplitude and frequency controls and specifically designed to compact the material on which it is used.

5. Pneumatic-tire rollers shall have smooth tread tires of equal size that provide a uniform compacting pressure for the full width of the roller and shall meet the following minimum requirements:

a. Towed rollers:

1) Ballast density shall exceed 100 pounds per cubic foot

2) Volume of ballast shall exceed 7 cubic feet per tire

3) Tire pressure shall exceed 45 pounds per square inch

b. Self propelled rollers:

1) Shall exert a force that exceeds 200 pounds per linear inch of rolling width.

2.4 WATER

A. Water for compaction of all backfill and fills, shall be clean, and free of all organic, deleterious substances and contaminants. Contractor to provide his own water.

3.1 GENERAL EXCAVATION AND DISPOSAL

A. Contractor shall verify all actual site conditions, levels, and grades prior to beginning work and inform the Contracting Officer of any discrepancies that exist.

B. Clearing and grubbing shall be accomplished before excavation or backfill placement begins.

Slash and grubbed stumps shall be removed from Government land. Slash disposal and grubbing of stumps, when approved by the Contracting Officer, may proceed concurrently with excavation, and the burning of slash shall not be permitted. Excavation and placement operations shall be conducted so slash material to be treated will not be incorporated in the embankment.

C. All material to be excavated shall be unclassified and shall include earth fills, gravels, boulders, debris, and any other materials encountered in excavation and grading operations.

D. All suitable, excavated material shall be used in the construction of backfill.

E. All excavations of every description and of whatever substances encountered shall be performed to the depth required for the structure. All materials shall be piled in an orderly manner a sufficient distance from the banks of an excavation to avoid overloading and to prevent slides or cave-ins.

F. Undercutting will not be permitted.

G. Material encountered in the excavation, suitable for topsoil, cushion, road finishing, or other purposes, may be conserved and utilized as such when approved by the Contracting Officer.

H. The Government will not make payment on excavations beyond indicated limits unless the Contracting Officer in advance of doing the work authorizes such excavations. Over excavation shall be restored to specified elevations with compacted backfill for concrete materials approved by the Contracting Officer.

I. Rocks too large to be incorporated into the embankment shall be broken for incorporation into the embankment, maneuvered to the face of the embankment and embedded so that they will not roll or obstruct the use and maintenance of the roadbed, or moved to locations approved by the Contracting Officer.

J. Sheeting and shoring should be used as is necessary for the protection of the work and for the safety of personnel. Excavation shall be by open cut. Whenever depth of excavation exceeds five feet the excavation shall be shored.

K. Water encountered during excavation operations shall be handled to prevent surface water and subsurface or ground water from flowing into excavations and from flooding project site and surrounding area. Separate payment will not be made for pumping of water from trenches or for excavation of material rendered unsuitable as a result of water encountered. Do not allow water to accumulate in excavations. Remove water to prevent softening of foundation bottoms, undercutting footings, and soil changes detrimental to stability of subgrades and foundations.

Provide and maintain pumps, well points, sumps, suction and discharge lines, and other dewatering system components necessary to convey water away from excavations. Establish and maintain temporary drainage ditches and other diversions outside excavation limits to convey rain water and water removed from excavations to collecting or runoff areas. Do not use trench excavations as temporary drainage ditches.

3.2 BACKFILL PLACEMENT

A. GENERAL BACKFILL PLACEMENT

1. Fill material shall be placed and compacted at optimum moisture content for compaction, as determined by the Contractor's test results.

2. Excessively wet material that is otherwise suitable for embankment shall be field drained and dried to the moisture content suitable for compaction.

3. No fill material shall be placed when free water is standing on the surface of the area where the fill is to be placed and no compaction of fill will be permitted with free water on any point of the surface of the fill to be compacted.

4. Any fill containing organic materials or other unacceptable material previously described shall be removed and replaced with approved fill material prior to compaction.

5. The Contractor must obtain approval from the Contracting Officer prior to backfilling.

6. Unless otherwise specified, all backfill not accessible to roller compaction shall be compacted by power tampers, vibratory compactors or other approved means to not less than 90% of maximum dry density as determined by ASTM D1557 for a minimum depth of one foot below finish grade, unless otherwise shown.

B. BACKFILL PLACEMENT FOR PARKING AREAS AND WALKWAYS

1. GENERAL

a. Compaction of not less than 95% of maximum dry density as determined by ASTM D1557 shall be obtained for the top twelve inches of subgrade for the width.

2. LAYER PLACEMENT

a. Material shall be a moisture content suitable for attaining the required density.

b. Surfaces on which compacted fill will be placed shall be wetted or dried as may be required to obtain the compaction specified.

3. FINISHING SUBGRADE

a. For areas receiving aggregate base or surface course, only rocks that do not protrude above the subgrade more that one-third of the depth of the base or surface course, or three inches, whichever is less, may remain in place.

b. Finished grade surface shall be reasonably smooth, compacted, and free from irregular surface changes within the tolerances specified herein.

c. During grading operations and before stopping work for the day, blade unfinished areas being graded to provide a well-drained surface so water cannot collect in pools and puddles.

d. Protect newly graded areas from traffic and erosion.

e. The subgrade shall be visibly moist during shaping and dressing. The Contractor shall apply water if insufficient moisture is not present to prevent segregation. Application of water shall be incidental to the work. Low sections, holes, cracks or depressions shall be brought to grade with suitable material. Final compaction of subgrade shall meet 95% of maximum dry density as determined by ASTM D1557 for a minimum depth of one foot below the grading plane. The Contractor shall perform compaction tests in accordance with this section. On subgrade, a minimum of one in-place density test shall be performed for every one thousand square feet each day, but in any case no fewer that three tests per day.

C. BACKFILL PLACEMENT FOR CONCRETE STRUCTURES

1. GENERAL

a. Provide water and base material per Vault Toilet manufacturer’s (CXT) specifications.

Vault toilet installation to be by others.

D. PLACEMENT OF EROSION CONTROL

1. Soil erosion and storm water pollution control measures shall be in accordance with Water

Quality Management for Forest System Lands in California – Best Management Practices, No. 12.21 and 12.22.

2. All installed erosion control shall become the property of the Government.

3.3 FINISH SITE GRADING

A. Generally the graded areas shall be constructed of shallow cuts and fills using native excavated soil and/or select borrow. Excavation shall be performed to remove protruding boulders and surface irregularities and at other locations as staked by the Contracting Officer. During all phases of construction the contractor shall confine all of his operations within the working limits. Working Limits are defined as the area consisting of the grading limits plus room for equipment to maneuver to perform the necessary construction. These limits, to be held to a minimum, will be indicated on contractor prepared grading plan.

B. Site grading criteria - see below for additional grading requirements

1. Maximum slope for embankment tying to existing terrain = 3:1 (unless otherwise specified or approved by the contracting officer).

2. Minimum drainage swale slopes = 1%

3. Drainage swale highpoint elevation = 0.3’ below vault toilet building finish floor elevation

4. Walkway and building apron slopes

a. minimum slope away from building = 1%

b. maximum slope = per ADA requirements

3.6 WATERING

A. The Contractor shall maintain all excavated and general site area free of water at all times.

Grading, drainage, ditches, dikes and any other necessary work shall be undertaken to divert rainfall or other surface water from the excavation. The Contractor shall prevent, and remove, if necessary all subsurface or ground water from flowing into excavations and from flooding project site and surrounding area.

B. Concrete curing water or water from other construction operations shall not be allowed to accumulate in the excavation during foundation construction.

3.7 TESTING

A. All sampling and testing shall be performed by a Government approved independent commercial testing laboratory at the Contractor's expense. Such work shall be certified, in writing, to the Contracting Officer. A complete record of all laboratory work shall be attached.

B. Where fill, backfill, or in-place materials are required to be compacted to a specified density, the maximum density for control shall be determined by using the ASTM D1557 method. The results of these tests shall be the basis upon which satisfactory completion of work will be judged.

C. In areas where field density tests results indicate less than the required degree of compaction, or in areas where previously accepted compaction has been disturbed, the backfill shall be replaced, reworked and/or compacted to obtain the required results at no additional cost to the Government.

D. Quality Control Testing during Construction: Allow testing service to inspect and approve each subgrade and fill layer before further backfill or construction work is performed.

1. Perform field density tests in accordance with ASTM D1556 (sand cone method) or ASTM D2167 (rubber balloon method), or ASTM D2922 (Nuclear Method) as applicable.

a. Field density tests may also be performed by the nuclear method in accordance with

ASTM D2922, providing that calibration curves are periodically checked and adjusted to correlate to tests performed using ASTM D1556. In conjunction with each density calibration check, check the calibration curves furnished with the moisture gages in accordance with ASTM D3017.

b. If field tests are performed using nuclear methods, make calibration check of both density and moisture gages at beginning of work, on each different type of material encountered, and at intervals as directed by the Contracting Officer..

2. If in the opinion of the Contracting Officer, based on testing service report and inspection, subgrade or fills that have been placed are below specified density, perform additional compaction and testing until specified density is obtained.

END OF SECTION 02220

SECTION 03300

CAST-IN-PLACE CONCRETE

PART 1 - GENERAL

1.1 SCOPE: This Section covers the supply, placing, and finishing of 6” thick reinforced concrete parking pad.

1.2 CODES and STANDARDS: The latest editions of the following standards and codes shall apply to all work except as modified below:

A. ACI 306, Cold Weather Concreting.

B. ACI 305, Hot Weather Concreting.

C. ASTM Part 4, Steel - Structural, Reinforcing, Pressure Vessel, Railway; Fasteners.

D. ASTM Part 14, Concrete and Mineral Aggregates; Manual of Concrete Testing.

1.3 MEASUREMENT and PAYMENT: No separate measurement or payment will be made for work specified in this section. The measurement shall be included as part of another lump sum item.

The lump sum price shall include full compensation for all materials, labor and incidentals necessary to complete the work.

1.4 REFERENCE SPECIFICATIONS: The publications listed below form a part of this specification to the extent referenced. The publications are referred to in the text by the basic designation only.

ACI 305 Hot Weather Concreting ACI 306 Standard Specification for Cold Weather Concreting ASTM A185 Standard Specification for Steel Welded Wire Reinforcement, Plain, for

Concrete ASTM A615 Standard Specification for Deformed and Plain Billet-Steel Bars for

Concrete Reinforcement ASTM C31 Standard Practice for Making and Curing Concrete Test Specimens in the

Field ASTM C39 Standard Test Method for Compressive Strength of Cylindrical Concrete

Specimens ASTM C94 Standard Specification for Ready-Mixed Concrete ASTM C138 Standard Test Method for Density (Unit Weight), Yield, and Air Content

(Gravimetric) of Concrete ASTM C143 Standard Test Method for Slump of Hydraulic Cement Concrete ASTM C150 Standard Specification for Portland Cement ASTM C260 Standard Specification for Air-Entraining Admixtures for Concrete

PART 2 - MATERIALS

2.1 CONCRETE MIX DESIGN: Composition and Requirements

A. Mix concrete in accordance with ACI 304. Deliver concrete in accordance with ASTM C94.

B. Select proportions for normal weight concrete in accordance with ACI 301 Method 2.

C. Provide concrete to the following criteria:

Unit Measurement Compressive Strength (28 day) for slabs and footings

4000 psi

Water/Cement Ratio (maximum) 0.45 Aggregate Size (maximum) 3/4 inch Aggregate Size (minimum) 1/4 inch Slump (maximum) 4 inches Air entrainment percentage 4% to 6% in areas subject to freeze/thaw

PART III - EXECUTION

3.1 MIXING and HAULING:

A. Batching and Mixing at Project Site - Concrete shall be mixed thoroughly in a batch mixer of approved type and capacity for a period of not less than 1-1/2 minutes after all component materials, including water, are in a drum, or as specified by the manufacturer of the mixer.

B. Batching and Mixing at a Central Plant Conforming to ASTM C94 - This method is ordinarily referred to as "ready-mixed concrete", and may only be employed if the time interval between mixing at the plant and discharger into the forms does not exceed one and a half hour. This limitation may be still further reduced to 1 hour when ambient air temperature or the high temperature of the batch ingredients (greater than 72 degrees F) indicate a shorter time period is required. Whatever the interval, the mixture shall be agitated continuously from the time the truck is loaded until time of discharge.

C. Batching at a Central Plant and Mixing Enroute to Project, Conforming to ASTM C94 -

This method is commonly referred to as "Transit Mix Concrete". It differs from Ready- Mix method in that although the batching is done at a central plant, the actual introduction of water and the mixing is done enroute to the project. The type of truck used is generally similar to the agitator trucks used in Ready-Mix method described above, except that it must have provision for introduction of accurately measured water, and be mechanically capable of revolving the mixing drum at mixing speed as well as at agitator speed.

The interval between mixing cement and aggregate and final discharge into the forms shall not exceed one and one-half hour regardless of where water is introduced to the batched elements and aggregates. Concrete plant standards and truck mixer and agitator standards shall be as recommended by the National Ready-Mix Association.

3.2 SAND BASE: A sand base shall be compacted to a depth of 3”

3.3 PLACING STEEL:

A. Rebar steel reinforcement shall be centered in slab, with 3” clear space at edges and full depth joints.

B. Steel reinforcement shall be fully supported to ensure minimum required clearances from the face of concrete. All supports shall be securely attached to the reinforcement and all steel shall be securely tied to prevent any movement during placing of concrete.

C. All reinforcement and ties requiring bending shall be deformed using tools designed for the purpose. No bends may be less than 6 bar diameters in radius. Absolutely no bending using any kind of heating apparatus shall be allowed. All steel bent in this manner shall be rejected from this project. All grade 60 steel reinforcing bars shall be shop bent only.

3.4 PLACING CONCRETE:

A. No concrete may be placed until all excavation, formwork, and steel has been inspected and accepted. Notice of 24 hours minimum shall be given to the Contracting Officer or authorized representative prior to any concrete placement to allow for full inspection.

B. All concrete shall be placed within the mixing time limitations established above, and in no case shall concrete be placed after it has started to take its initial set. Concrete shall be placed in such a manner as to avoid segregation of coarse or fine portions of the mixture, and shall be spread in horizontal layers when practicable.

C. Sufficient…