Attach_02_Stony_Creek_Toilets_Sidewalks_Specs.pdf

STONY CREEK CAMPGROUND

NEW TOILETS SITE WORK

LIST OF SPECIFICATIONS

DIVISION 1 – GENERAL REQUIREMENTS

Section 01010 – Summary of Work Section 01300 – Measurement and Payment Section 01301 – Mobilization Section 01400 – Quality Control

DIVISION 2 – SITE WORK

Section 02100 – Demolition Section 02240 – Crushed Aggregate Base Course Section 02320 – Earthwork Section 02726 – Signs

DIVISION 3 – CONCRETE

Section 03300 – Cast-in-Place Concrete

01010 - 1

SECTION 01010

SUMMARY OF WORK

PART 1 - GENERAL

1.1 DESCRIPTION OF WORK

Furnish all labor, equipment, and material to accomplish the work under this contract at Stony Creek Campground on Sequoia National Forest land. Work includes but is not limited to the following major items:

A. Sewage Systems:

1. Demolish and dispose sewer systems at three (3) toilet locations. Pump and rinse out septic tanks; drill a 4 inch hole in the bottom of the vault for drainage; demolish and remove all septic tank components to 2 feet below ground surface; demolish top of septic tank; and backfill and compact the septic tanks with native fill to flush with adjacent grade.

B. Accessible Sidewalks at Toilets:

1. Construct accessible sidewalks at three pairs of double vault toilet buildings at three locations in the campground as Shown on the Drawings, including earthwork, formwork, reinforcement, concrete placement, finishing, and cleanup.

C. Accessible Parking at Toilets:

1. Construct one accessible parking space at each set of double vault toilet buildings at three locations in the campground as Shown on the Drawings or designated on the site, including earthwork, aggregate placement, compaction, signs, and cleanup.

1.2 MEASUREMENT AND PAYMENT

A. Measurement – See Section 01300 Measurement and Payment.

B. Payment:

1. For each individual item listed in the Schedule of Items, payment shall be full compensation for all work related to the particular item in accordance with these specifications, as shown on the drawings, and as staked in the field.

2. Measurement and payment for contract work shall be made only for and under those pay items included in the SCHEDULE OF ITEMS. All other work and materials shall be considered incidental or as included in the payment for items shown.

C. Descriptions of Bid (Pay) Items - Descriptions of bid items are an abbreviated explanation of pay items and may not include all requirements to complete the Work required for each item. Contractor should refer to the Schedule of Items, Contract Sections, Drawings, and Specifications for complete details. The accepted quantities will be paid for at the unit price as shown in the SCHEDULE OF ITEMS.

01010 - 2

1.3 SPECIFICATIONS, DRAWINGS, AND SUBMITTALS

A. This project requires the Contractor to supply all labor, materials, equipment, tools, transportation, freight and delivery, identify existing underground utilities and all necessary licenses and permits required to complete the project in conformity with the drawings and specifications, and in accordance with the provisions of the contract.

B. The project is located on the Hume Lake Ranger District of the Sequoia National Forest.

See site map for reference.

C. The specifications establish the construction procedures and materials to be employed throughout. All work shall be completed in accordance with these specifications and project drawings.

1.4 MEALS AND LODGING

A. Meals or lodging will not be available at Forest Service facilities.

1.5 CONSTRUCTION ADMINISTRATION

A. No dumping of waste products of any type will be permitted. All waste shall be transported to an approved sanitary landfill for disposal off Forest Service land.

B. No on-site sanitary facilities are available for Contractor’s use. Contractor shall provide facilities for construction employees. Human waste disposal shall conform to the State of California rules and regulations governing such disposal.

C. Materials for construction, construction vehicles and equipment may be stockpiled and staged at the project site in an area designated by the Contracting Officer.

D. The Contractor shall take precautions to protect all work and materials during the construction period.

E. The Contractor is responsible for safeguarding the public and employees from construction operations.

F. Contractor shall comply with the provisions of Contract Section C.6 SPECIAL

CONDITIONS AFFECTING THE WORK.

1.6 EROSION CONTROL

A. This work consists of temporary measures to control soil erosion and water pollution, through the use of berms, dikes, dams, sediment basins, silt fences, brush barriers, fiber mats, netting, gravel, mulches, grasses, slope drains, and other devices or methods.

01010 - 3

B. Temporary erosion and pollution control measures required due to the Contractor's negligence, carelessness, or failure to install permanent controls as scheduled shall be performed by the Contractor at his own expense.

C. Erosion control features shall be maintained by the Contractor during the contract.

Temporary controls shall be dismantled and properly disposed of off the Forest Land.

1.7 CONSTRUCTION SEQUENCE

A. The project shall be completed within the time frame established by the terms of this contract and according to the approved Schedule of Work.

B. Depending on conditions, normal fire restrictions may apply to activities in this project.

1.8 SITE FINISHING

A. Conserve native topsoil that is free from large roots, branches and inorganic material such as concrete and asphalt for use as SHOWN ON THE DRAWINGS or as designated by the Contracting Officer. Spread conserved topsoil in locations designated by the Contracting Officer.

B. Fill depressions caused by demolition operations with satisfactory soil material, unless further excavation or earthwork is indicated.

C. Place fill material in horizontal layers not exceeding 6-inches loose depth and thoroughly compact to a density equal to adjacent original ground.

D. All areas shall be sloped and contoured for free drainage without ponding of water, and scarified 6” deep minimum to promote the growth of natural vegetation.

1.9 PROJECT SITE CLEANUP

A. Project site cleanup includes the removal and proper disposal of all construction trash, debris, residue, and asphalt and concrete slag off of National Forest Land. Items such as miscellaneous construction materials are considered the property of the Contractor and shall be removed from the project site.

B. All spills of petroleum products including leak spots from parked vehicles shall be removed and properly disposed according to all Local, State, and Federal rules, regulations, and laws governing such disposal.

C. During the Work, the Contractor is required to furnish dumpsters or other trash receptacles and to empty such containers either as they become full or weekly, whichever is more frequent. The Contractor shall not place materials of any kind into private or Government trash bins or dumpsters.

D. All suitable excavated material shall be incorporated into the work when possible.

Additional suitable borrow material is to be obtained from a "Commercial Source" if

01010 - 4 enough select backfill is not available. Unsuitable excavated material must be disposed of by the contractor, as an incidental expense with no extra payment. All unsuitable excavated material disposed of by contractor must be delivered off of the project site and off of National Forest Land.

E. All construction debris from construction of sitework, and demolition of existing conditions, shall be cleaned up and disposed of off of National Forest Land. All clearing debris shall be scattered within the clearing limits after utilities construction is complete, and used as a soil stabilizer to help prevent erosion. All vegetative matter including roots, stumps, and logs must be disposed of off National Forest Land.

1.10 PROJECT CLOSEOUT

A. Removal of Protection: Remove temporary protection and facilities installed for protection of the Work during construction.

B. Compliance: Comply with regulations of authorities having jurisdiction and safety standards for cleaning. Do not burn waste materials. Do not bury debris or excess materials on the Government's property. Do not discharge volatile, harmful, or dangerous materials into drainage systems. Remove waste materials from the site and dispose of lawfully.

Clean the site of rubbish, litter, and other foreign substances. Sweep paved areas broom clean; remove stains, spills, and other foreign deposits. Rake grounds that are neither paved nor planted to a smooth, even-textured surface.

END OF SECTION

01300-1

SECTION 01300

MEASUREMENT AND PAYMENT

1.01 Measurement and Payment –

A. 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 shall be considered incidental or as included in the payment for items shown.

When more than one class, size, or thickness is specified in the SCHEDULE OF ITEMS for any pay item, suffixes will be added to the item number to differentiate between items to be bid.

B. For each individual item listed in the Schedule of Items, payment shall be full compensation for all work related to the particular item in accordance with these specifications, as shown on the drawings, and as staked in the field.

1.02 Determination of Quantities - The following methods of measurement is used to determine contract quantities for payment.

A. For individual construction items, longitudinal and lateral measurements for area computations will be made horizontally or corrected to horizontal measurement unless otherwise specified. Measurements for seeding, mulching, geotextiles, netting, erosion control blankets, and sodding will be along slope lines.

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

C. Structures will be measured according to neat lines AS SHOWN ON THE DRAWINGS or as altered by the Engineer in writing to fit field conditions.

D. For items that are measured by the linear foot, such as pipe culverts, fencing, guardrail, and under drains, measurements will be made parallel to the base or foundation upon which the structures are placed. Pipe and pipe arch culverts shall be measured along center of invert; arches shall be measured at spring line.

E. For standard manufactured items, such as fence, wire, plates, rolled shapes, pipe conduits, etc., identified by gauge, weight, section dimensions, etc., such identification shall be considered the nominal weights or dimensions. Unless controlled by tolerances in cited specifications, manufacturer's tolerances will be accepted.

1.03 Units of Measurement - Payment will be by units defined and determined according to U.S.

Standard measure as follows:

01300-2

A. Acre – Make longitudinal and transverse measurements for area computations horizontally.

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

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

2. Material in Place or Stockpile - The measurement computed with dimensions of the in-place material.

3. 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.

C. Each - One complete unit, which may consist of one or more parts.

D. Gallon – The quantity may be measured by any of the following methods:

1. Measured volume container.

2. Metered volume. Use an approved metering system

3. Commercially packaged volumes.

E. Hour – Measurement will be for the actual number of hours ordered and performed by the Contractor.

F. Linear Foot – Measure from end to end, parallel to the base or foundation being measured, or horizontal.

G. Mile – Measure horizontal along the centerline of each roadway, approach road, or ramp.

H. Pound – If sacked or packaged material is furnished, the net weight as packed by the manufacturer may be used.

I. Square Foot - Measure on a plane parallel to the surface being measured or horizontal.

J. Square Yard – Measure on a plane parallel to the surface being measured or horizontal.

K. Station - One hundred linear feet measured horizontally.

L. Station Yard - A combination of linear and volumetric measurement meaning the movement of a cubic yard of material one station.

M. Thousand Gallons Mile - A combination of linear and volumetric measurement meaning the movement of 1,000 gallons of material 1 mile.

N. Ton - Short ton consisting of 2,000 pounds.

O. Ton Mile - A combination of linear and weight measurement meaning the movement of 1 ton of material 1 mile.

01300-3

1.04 Methods of Measurement - One of the following methods of measurement for determining final payment is DESIGNATED on the SCHEDULE OF ITEMS for each pay item:

A. Designed Quantities (DQ) - These quantities denote the final number of units to be paid for under the terms of the contract. They are based upon the original design data available prior to advertising the project. Original design data include the preliminary survey information, design assumptions, calculations, drawings, and the presentation in the contract. Changes in the number of units SHOWN in the SCHEDULE OF ITEMS may be authorized under any of the following conditions:

1. As a result of changes in the work authorized by the Contracting Officer.

2. As a result of the Contracting Officer determining that errors exist in the original design data used to determine designed quantities, which cause a pay item to change by 15 percent or more.

3. As a result of the Contractor submitting to the Contracting Officer a written request showing evidence of errors in the original design data used to determine design quantities that cause a pay item total to change by 15 percent or more. The evidence must be verifiable and consist of calculations, drawings, or other data that show how the designed quantity is believed to be in error.

B. Staked Quantities (SQ) - These quantities are determined from staked measurements prior to construction.

C. Actual Quantities (AQ) - These quantities are determined from measurements of completed work.

D. Vehicle Quantities (VQ) - These quantities are measured or weighed in hauling vehicles.

E. Lump Sum Quantities (LSQ) - These quantities denote one complete unit of work as required by or described in the contract, including necessary materials, equipment, and labor to complete the job. They will not be measured.

PART 2 - PRODUCTS (Not Applicable)

PART 3 - EXECUTION (Not Applicable)

01301 - 1

SECTION 01301

MOBILIZATION

PART 1 - GENERAL

1.1 DESCRIPTION

A. This Work consists of moving personnel, equipment, material, and incidentals to the project and performing all work necessary before beginning work at the project site. Mobilization includes the obtaining of all permits, insurance, and bonds.

1.2 PERMITS

A. The Government does not purchase building, electrical, plumbing, or encroachment permits.

The Contractor will not be reimbursed for such permits. The Contractor, under its program for project quality control, may request and pay for inspection of these items from the local jurisdiction. All other permits remain the Contractor’s responsibility to obtain.

B. The contractor is responsible for the fees and permits required to move oversize loads on state and local roads.

1.3 MEASUREMENT AND PAYMENT

A. Method of Measurement: Lump Sum Quantity (LSQ).

B. Unit of Measurement: Lump Sum. The Government will only pay for the initial project mobilization. Additional project mobilizations, regardless of cause, will not be paid.

Mobilization is shown on the SCHEDULE OF ITEMS as one pay item: Mobilization.

C. Progress payment for Mobilization lump sum will be paid as follows:

1. Bond premiums will be reimbursed according to FAR Clause 52.232-5 Payments Under

Fixed-Price Construction Contracts, after receipt of the evidence of payment.

2. When 5 percent of the original contract amount is earned from other bid items, 50 percent of the mobilization item, or 5 percent of the original contract amount, whichever is less, will be paid.

3. When 10 percent of the original contract amount is earned from other bid items, 100 percent of the mobilization item, or 10 percent of the original contract amount, whichever is less, will be paid.

4. Any portion of the mobilization item in excess of the 10 percent of the original contract amount will be paid after final acceptance.

01400-1

SECTION 01400

QUALITY CONTROL AND QUANTITY MEASUREMENT

1.01 Scope - This work shall consist of providing quality control in conformance with the

Inspection of Construction provisions of this contract to ensure compliance with the drawings, specifications, and provisions of the contract, and measuring the quantities of completed work in conformance with the provisions of the applicable specifications. The Contractor shall provide all personnel, equipment, tests, and reports necessary to meet the requirements of this specification.

1.02 Measurement and Payment - No separate payment will be made for the work included under this section. Payment for this work is considered incidental to other items of work.

PART 2 - PRODUCTS (Not Applicable)

PART 3 – EXECUTION

3.01 Records of Inspection and Tests

A. Inspection and Tests - The Contractor shall maintain current records of all inspections and tests performed.

The following format or one containing the following information will be acceptable to the government:

Project________________________ Contract No.______________________

Pay Item No.

Test

Date

Station

Standard

Results

Test by (Initials

The Contractor shall certify in writing that all inspections and tests were performed in accordance with specifications.

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

3.02 Certifications and Measurements

A. Offsite Produced Materials - The Contractor shall furnish certificates executed by the manufacturer, supplier, or vendor, stipulating that all offsite produced materials incorporated into the work meet the applicable requirements AS SHOWN ON THE DRAWINGS or stated in the specifications. Incidental purchases needed to remedy minor shortages of material shall be certified by the Contractor.

01400-2

B. Quantity Measurements - The Contractor shall make all measurements for computation of quantities for all work items except those specified for payment by Designed Quantity (DQ). The Contractor shall compute the quantities for periodic progress payments; the Engineer will compute the quantities for the final payment based on measurements taken by the Contractor. All Contractor measurements are subject to verification. The Contractor shall submit all field notes, calculation sheets, and other data used to determine quantities. The Contractor shall certify in writing as to the accuracy of the measurements and computations submitted.

The following format or one containing the following information will be acceptable to the Government:

Project ______________________ Contract No._______________________

Pay Item No.

Date

Station

Quantity or Measurement

Measured by (Initials)

02100 - 1

SECTION 02100

DEMOLITION

PART 1 GENERAL

1.1 SCOPE

Furnish all labor, equipment, and material to accomplish the work under this contract at Stony Creek Campground on Sequoia National Forest land. Work includes but is not limited to demolition of portions of three sewer systems as shown on the schedule of items and described in Section C Description of Work and Section 01010 Summary of Work.

1.2 RELATED SECTIONS

Section 01010 - Summary of Work Section 01300 - Measurement and Payment.

PART 2 PRODUCTS

2.1 BACKFILL

A. Select native materials suitable for “bucket” or “wheel” or “vibro plate” compaction.

PART 3 EXECUTION

3.1 SITE UTILITIES

A. All utilities shall be properly disconnected, capped, or otherwise rendered inoperable in such a manner as to provide safe operation of the remaining site utilities.

3.2 DEMOLITION

A. Items to be demolished and removed include septic tanks at three (3) toilet locations.

Pump and rinse out septic tanks; drill a 4 inch hole in the bottom of the vault for drainage; demolish and remove all septic tank components to 2 feet below ground surface; demolish top of septic tank; and backfill and compact the septic tanks with native fill to flush with adjacent grade.

3.3 DISPOSAL – CLEAN UP

A. All trash, debris, items designated to be removed, and other waste generated as a result of demolition under this specification become property of the Contractor unless otherwise specified and shall be removed from Forest Service lands and properly disposed of in accordance with all applicable Federal, State, and Local Government laws, regulations, rules and/or codes.

02100 - 2

B. All natural excavated material shall be incorporated into the work when possible.

Additional borrow material may be obtained on site, if needed, as approved by the Contracting Officer.

C. All trenches, holes, and pits created to remove septic tanks shall be backfilled and compacted. At least a 6-inch overlay will be placed over all excavated areas to allow for settlement. The site shall be smoothed and contoured to provide free drainage without ponding of surface water. All disturbed or bare areas shall be scarified 6” deep minimum to encourage the growth of natural vegetation.

02240-1

SECTION 02240

CRUSHED AGGREGATE BASE COURSE

1.01 Scope

This work shall consist of furnishing, hauling, and placing aggregate base on approved vehicle parking subgrades.

1.02 Related Sections

Section 01300 - Measurement and Payment Section 02320 – Earthwork

1.03 Measurement and Payment

The aggregate material will be paid for as part of a Lump Sum item for construction of accessible parking spaces, including earthwork, aggregate supply, placement, and compaction; and accessible parking signing.

PART 2 - PRODUCTS

2.01 Materials

A. Crushed Aggregate shall be obtained from an approved commercial source certified for production of Caltrans ¾” Class 2 Aggregate Base.

B. Gradation - The crushed aggregate gradation shall meet the requirements for Caltrans ¾” Class 2 base as listed in the Schedule of Items. Aggregate shall be well graded from coarse to fine within the gradation band.

C. Fractured Faces - When crushed gravel is used, at least 50 percent by weight of the particles retained on No. 4 sieve shall have at least one fractured face. Naturally fractured faces may be included in the 50 percent requirement, provided the roughness and angularity produce strength characteristics equivalent to mechanically fractured faces.

D. Aggregate Certification - The commercial source shall provide a statement from a certified testing facility stating that aggregate from this source meets the requirements of these specifications and the designated gradation. The CO may at any time sample the delivered materials and make compliance tests.

02240-2

E. Variance from Specified Requirements - Variances from the crushed aggregate quality and gradation requirements shall be approved in writing by the CO prior to use of the material on the project.

PART 3 - EXECUTION

3.01 Preparation of Sub Grade:

The sub grade shall conform to the grades and lines AS SHOWN ON THE DRAWINGS.

Rock requiring blasting, rippable rock, and boulders shall be excavated to a minimum depth of six (6) inches below sub grade and replaced with suitable cushion material obtained from within the excavation area or from sources approved by the Contracting Officer. Suitable excavated material shall be utilized in the preparation of the sub grade. Unsuitable and excess suitable, excavated material shall be disposed of as directed by the Engineer.

Embankments shall be placed in compacted layers not exceeding eight (8) inches (loose measure). The entire sub grade shall be compacted to 95 percent of AASHTO T99, method C or D. Compaction equipment shall be capable of obtaining compaction requirements without detrimentally affecting the compacted material.

3.02 Mixing and Placing

Water shall be added to the aggregate in an amount necessary to provide the moisture content for compacting to the specified density. The moisture content of the aggregate shall be uniform throughout. The aggregate shall be spread in a uniform layer, with no segregation of size, and to a loose depth that shall have the required thickness when compacted.

3.03 Compaction

The surface of each layer shall be bladed during compaction operations to remove irregularities and produce a smooth, even surface. Operate compaction equipment over the full width of each layer until visible deformation of the layer ceases or, in the case of a sheepsfoot roller being used, the roller “walks out” of the layer. Make at least three (3) complete passes.

3.04 Thickness Requirement

The minimum thickness of the compacted aggregate shall not vary more than 1/2-inch from the thickness AS SHOWN ON THE DRAWINGS. The compacted thickness shall not be consistently below the specified thickness.

02320 - 1

SECTION 02320

EARTHWORK

PART 1 - GENERAL

1.1 DESCRIPTION

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

furnish and place fill, backfill, sub-base and base materials; trenching and backfill; compaction and grading.

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

1. Excavate to levels and lines required for foundations and other subgrade work.

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

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

4. Compact subgrade, backfill material, and granular rock base where required.

5. Rough and finish grade to levels and lines indicated.

6. Finish grading.

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

State of California requirements.

Section 01300 - Measurement and Payment Section 02240 –Crushed Aggregate Base

Earthwork is incidental to other pay items. It will not be measured or pay as a separate item.

PART 2 - PRODUCTS

2.1 BACKFILL 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 on site excavation and commercial sources.

Table 02320-1

Classification and Standards for Trench Backfill Item Material Tolerance

Select Bedding Fine Sand or Soil 100% passing the No. 8 Sieve, without sharp chips or points.

Secondary Backfill (Shading or Conduit

Backfill)

Excavated Material

100% passing the 1-inch Sieve, without sharp chips or points.

Final Backfill Excavated Material

Material meeting the quality requirements of “Secondary Backfill” above and containing no rocks larger than 4-inches in greatest dimension.

02320 - 2

B. AGGREGATE BASE FOR CONCRETE SLABS

1. Material for concrete slabs and paved areas shall be CalTrans ¾” Class II base and free of organic matter and other deleterious materials.

C. SAND

1. Use only clean natural sand, free of organic debris and salts.

D. SURPLUS EXCAVATION

1. Acceptable surplus excavation shall be obtained from on-site excavation and demolition activities that are well graded with no rocks having a dimension greater than 2-inches.

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

2.2 COMPACTION EQUIPMENT

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

B. Minimum requirements for rollers are as follows:

1. 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.

2. 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.

C. 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:

2. Self propelled rollers:

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

PART 3 - EXECUTION

3.1 GENERAL EXCAVATION AND DISPOSAL

A. Topographic drawings of the project are intended for reference only. 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 disposal and grubbing of stumps, when approved by the Contracting Officer, may proceed concurrently with excavation, and the burning of slash, if burning is authorized by the Contracting Officer, may be delayed until weather permits. 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 embankments, subgrades, shoulders, slopes, bedding, and backfill for structures and for other purposes as SHOWN ON THE DRAWINGS and SPECIFIED HEREIN. Excess suitable material shall be used

02320 - 3 throughout the project as SHOWN ON THE DRAWINGS and as designated by the Contracting Officer.

E. 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.

F. 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.

G. Water encountered during excavation operations shall be removed from the excavation as required. 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.

3.2 EXISTING IMPROVEMENTS

A. Maintain and protect utility service lines passing through the work area.

B. The Contractor's attention is directed to the existence of pipe and other underground utilities or improvements, which may or may not be shown on the drawings. All reasonable precautions shall be taken to preserve and protect any such improvements. The contractor shall be responsible for contacting USA at 1-800-642-2444 48 hours prior to locate utilities before excavating.

C. Where existing utilities or improvements interfere with the work, they shall not be removed, relocated, or otherwise disturbed unless authorized by the Contracting Officer.

3.3 EXCAVATION FOR UTILITY TRENCHES

A. Conform to the requirements for general excavation and the following:

1. Trenches shall be AS SHOWN ON THE DRAWINGS for properly laying utility lines.

Water line trenches shall be uniformly graded to avoid high points that would necessitate the placing of air valves in the water lines. Trenches shall be of a depth to provide the minimum cover over the utility line SHOWN ON THE DRAWINGS.

2. All roots shall be cut and removed from trenches. Bottoms of trenches shall be accurately graded to an elevation below the grade line of the proposed utility line as

SHOWN ON THE DRAWINGS.

3.4 EXCAVATION FOR CONCRETE STRUCTURES

A. Conform to the requirements for general excavation and the following:

1. Depth of excavation for slabs on grade shall be sufficient to allow for aggregate base, vapor barrier, sand, and slab thickness AS SHOWN ON THE DRAWINGS.

3.5 BACKFILL PLACEMENT

A. GENERAL BACKFILL PLACEMENT

1. Fill material shall be placed and compacted at moisture content suitable for compaction.

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.

02320 - 4

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 the degree of compaction specified.

B. BACKFILL PLACEMENT FOR UTILITY TRENCHES

1. LOWER PORTION OF UTILITY TRENCHES

a. Bedding material shall be used to provide a cushion below, adjacent to, and above the utility line as SHOWN ON THE DRAWINGS.

b. Bedding material shall be deposited in six-inch-maximum-thickness layers.

c. The bedding material shall be compacted by power tampers until visual displacement ceases.

2. MIDDLE PORTION OF UTILITY TRENCHES

a. Secondary backfill placed on top of the utility shall be used to provide conduit protection.

b. Secondary backfill material shall be deposited in layers not to exceed eight inches.

c. The Secondary backfill material shall be compacted by power tampers until visual displacement ceases.

3. UPPER PORTION OF UTILITY TRENCHES

a. Backfill material in the upper portion of trenches passing under areas of proposed sidewalks, and parking lots shall be comprised of materials placed and compacted according to the same requirements as the surrounding base.

b. Final backfill material in the upper portion of trenches passing through areas not under proposed improvements shall be comprised of final backfill material.

c. Final backfill material shall be deposited in layers not to exceed 8-inches.

d. Final backfill shall be compacted to a density at least equal to that of the adjacent undisturbed native soil.

e. Warning Tape shall be installed in the utility trench as SHOWN ON THE

DRAWINGS.

C. BACKFILL PLACEMENT FOR SIDEWALKS AND PARKING LOTS

1. GENERAL

a. Embankments shall be constructed of suitable material and compacted uniformly by rollers or power tampers until visual displacement ceases.

2. LAYER PLACEMENT

a. Embankment shall be placed in horizontal layers not exceeding 6 inches (loose measure) and compacted. Each embankment layer shall be leveled, smoothed, and compacted before placement of subsequent layers.

b. Placing individual rocks greater than 9 inches in diameter will not be permitted.

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

d. Cohesive soils that have become hard or lumpy, or that have been piled and have become dry, shall be broken up and properly conditioned for moisture content immediately before placement.

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

3. FINISHING SLOPES

a. Finished slopes shall conform reasonably to the lines SHOWN ON THE

DRAWINGS and the approved final locations STAKED ON THE GROUND.

The finished slope shall be left in a roughened condition to facilitate the establishment of vegetative growth. Loose rock, loose debris, and other loose material, each of which is larger than 6 inches in diameter, shall be removed from the slope unless otherwise SHOWN ON THE DRAWINGS.

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D. BACKFILL PLACEMENT FOR CONCRETE STRUCTURES

1. GENERAL

a. Prior to placement of backfill, all forms shall be removed and the excavation be cleaned of all trash, debris and unsuitable material.

b. Where self-propelled or power mechanical compaction is used, the uncompacted thickness of each lift of backfill shall be not more than 6 inches.

c. Where hand-operated mechanical compaction is used, the backfill shall be placed in layers of not more than six inches.

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SECTION 02726

SIGNS

PART 1- GENERAL

1.01 Scope

Furnish and install, delineators, markers, signs, sign supports, panels and posts.

Section 01300 – Measurement and Payment

Signs and posts will be paid for as part of a Lump Sum item for construction of accessible parking spaces, including earthwork, aggregate placement and compaction; and supply and installation of accessible parking signs.

PART 2 – MATERIAL

2.01 Sign Materials

A. Traffic control signs shall meet the requirements of the MUTCD and details AS SHOWN

ON THE DRAWINGS.

B. Sign posts shall be one of the following:

1. U-channel steel posts flanged, punched, and galvanized steel posts conforming to

ASTM A499, industry standard for installation of traffic control signs.

2. 4x4 treated wood posts conforming to AASHTO M 168; straight, smooth, and without defects affecting strength, durability, or appearance.

PART 3 - EXECUTION

3.01 Post and Sign Installation.

Erect post plumb, perpendicular to the roadway and in accordance with the details AS

SHOWN ON THE DRAWINGS and as staked on-the-ground. Install sign plumb and square with industry standard fasteners.

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SECTION 03300

CAST-IN-PLACE CONCRETE

PART 1 – GENERAL

1.1 DESCRIPTION

A. The work of this section consists of constructing concrete sidewalks around prefabricated concrete toilet buildings as Shown on the Drawings.

1.2 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, and Division 1 Specification Section, apply to this Section.

1.3 RELATED SECTIONS

Section 01010 – Summary of Work Section 01300 - Measurement and Payment Section 02240 – Crushed Aggregate Base Course

1.4 MEASUREMENT AND PAYMENT

The concrete material will be paid for by Lump Sum for construction of accessible sidewalks at each of three locations in the campground, including earthwork, aggregate base, formwork, steel reinforcing, concrete supply, placement, and compaction; and clean

up. Each location includes two double vault toilets installed back to back, with concrete sidewalks to be installed all the way around both toilets.

1.5 SUMMARY

This Section specifies cast-in place concrete, including formwork, reinforcement, concrete materials, mix design, placement procedures, and finishes. This work includes cast-in-place concrete for building foundations, slabs-on-grade, exterior and interior flat work.

1.6 SUBMITTALS

A. Product Data: For each type of manufactured material and product indicated.

B. Design Mixes: For each concrete mix. Include alternate mix designs when characteristics of materials, project conditions, weather, test results, or other circumstances warrant adjustments.

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

1.7 QUALITY ASSURANCE

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

B. Testing Agency Qualifications: An independent testing agency, acceptable to authorities having jurisdiction, qualified according to ASTM C 1077 and ASTM E 329 to conduct the testing indicated, as documented according to ASTM E 548.

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

C. Source Limitations: Obtain each type or class of cementitious material of the same brand from the same manufacturer's plant, each aggregate from one source, and each admixture from the same manufacturer.

D. ACI Publications: Comply with the following, unless more stringent provisions are indicated:

1. ACI 301, "Specification for Structural Concrete."

2. ACI 117, "Specifications for Tolerances for Concrete Construction and Materials."

1.8 DELIVERY, STORAGE, AND HANDLING

A. Deliver, store, and handle steel reinforcement to prevent bending and damage.

1. Avoid damaging coatings on steel reinforcement.

2. Repair damaged epoxy coatings on steel reinforcement according to ASTM D 3963.

PART 2 – PRODUCTS

2.1 FORM-FACING MATERIALS

A. Smooth-Formed Finished Concrete: Form-facing panels that will provide continuous, true, and smooth concrete surfaces. Furnish in largest practicable sizes to minimize number of joints.

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

B. Chamfer Strips: Wood, metal, PVC, or rubber strips, 3/4 by 3/4 inch, minimum.

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

2.2 STEEL REINFORCEMENT

A. Reinforcing Bars: ASTM A 615, Grade 60, deformed.

B. Plain-Steel Welded Wire Fabric: ASTM A 185, fabricated from as-drawn steel wire into flat sheets.

2.3 REINFORCEMENT ACCESSORIES

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

B. Joint Dowel Bars: Plain-steel bars, ASTM A 615, Grade 60. Cut bars true to length with ends square and free of burrs.

2.4 CONCRETE MATERIALS

A. Portland Cement: ASTM C 150, Type I/II.

B. Normal-Weight Aggregate: ASTM C 33, uniformly graded, and as follows:

1. Class: Severe weathering region, but not less than 3S.

2. Nominal Maximum Aggregate Size: 3/4 inch.

C. Water: Potable and complying with ASTM C 94.

2.5 ADMIXTURES

A. General: Admixtures certified by manufacturer to contain not more than 0.1 percent water-soluble chloride ions by mass of cementitious material and to be compatible with other admixtures and cementitious materials. Do not use admixtures containing calcium chloride.

B. Air-Entraining Admixture: ASTM C 260.

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

D. Calcium chloride or admixtures containing more than 0.1% chloride ions are not permitted.

1. Available Products: Subject to compliance with requirements, products that may be incorporated into the Work include, but are not limited to, the following:

a. Catexol 1000CL; Axim Concrete Technologies.

b. MCI 2000 or MCI 2005; Cortec Corporation.

c. DCI or DCI-S; W. R. Grace & Co., Construction Products Div.

d. Rheocrete 222+; Master Builders, Inc.

e. FerroGard-901; Sika Corporation.

f. Retarders – Shall be submitted to the Contracting Officer 10 days prior to pouring concrete.

2.6 VAPOR RETARDERS

A. Vapor Retarder: ASTM E 1745, Class A, three-ply, nylon- or polyester-cord-reinforced, high-density polyethylene sheet; laminated to a nonwoven geotextile fabric, 30 mils thick.

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1. Available Product: Subject to compliance with requirements, a product that may be incorporated into the Work includes, but is not limited to, "Griffolyn T-65G" by Reef Industries Inc.

B. Granular Fill: Clean mixture of crushed stone or crushed or uncrushed gravel;

ASTM D 448, Size 57, with 100 percent passing a 1-1/2-inch sieve and 0 to 5 percent passing a No. 8 sieve.

2.7 CURING MATERIALS

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

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

C. Water: Potable.

D. Clear, Waterborne, Membrane-Forming Curing Compound: ASTM C 309, Type 1, Class B.

1. Clear, Solvent-Borne, Membrane-Forming Curing Compound:

a. Spray-Cure & Seal 15; ChemMasters.

b. Diamond Clear; Euclid Chemical Co.

2.8 RELATED MATERIALS

A. Joint-Filler Strips: ASTM D 1751, asphalt-saturated cellulosic fiber, or ASTM D 1752, cork or self-expanding cork.

2.9 CONCRETE MIXES

A. Prepare design mixes for each type and strength of concrete determined by either laboratory trial mix or field test data bases, as follows:

1. Proportion normal-weight concrete according to ACI 211.1 and ACI 301.

B. Use a qualified independent testing agency for preparing and reporting proposed mix designs for the laboratory trial mix basis.

C. Slab-on-Grade: Proportion normal-weight concrete mix as follows:

1. Compressive Strength (28 days): 3500 psi.

2. Minimum Cementitious Materials Content (sack/cu. yd.): 6.

3. Maximum Slump: 2-4 inches.

4. Air Entrainment 3% - 6%

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

1. Use water-reducing and retarding admixture when required by high temperatures, low humidity, or other adverse placement conditions.

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2.10 CONCRETE MIXING

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

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

PART 3 – EXECUTION

3.1 FORMWORK

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

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

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

1. Class A, 1/8 inch.

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

E. No “Earth” formed footing will be allowed for the building foundations.

F. Fabricate forms for easy removal without hammering or prying against concrete surfaces. Provide crush or wrecking plates where stripping may damage cast concrete surfaces. Provide top forms for inclined surfaces steeper than 1.5 horizontal to 1 vertical. Kerf wood inserts for forming keyways, reglets, recesses, and the like, for easy removal.

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

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

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

I. Chamfer exterior corners and edges of permanently exposed concrete.

J. Clean forms and adjacent surfaces to receive concrete. Remove chips, wood, sawdust, dirt, and other debris just before placing concrete.

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

L. Coat contact surfaces of forms with form-release agent, according to manufacturer's written instructions, before placing reinforcement. Exposed foundation formed with “dimensional” lumber shall be finished with a mixture of cement, sand, and water and worked with sack cloth.

3.2 EMBEDDED ITEMS

A. Place and secure anchorage devices and other embedded items required for adjoining work that is attached to or supported by cast-in-place concrete. Use Setting Drawings, templates, diagrams, instructions, and directions furnished with items to be embedded.

1. Install anchor bolts, accurately located, to elevations required.

3.3 REMOVING AND REUSING FORMS

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

B. Clean and repair surfaces of forms to be reused in the Work. Split, frayed, delaminated, or otherwise damaged form-facing material will not be acceptable for exposed surfaces.

Apply new form-release agent.

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

3.4 VAPOR RETARDERS

A. Vapor Retarder: Place, protect, and repair vapor-retarder sheets according to ASTM E 1643 and manufacturer's written instructions.

B. Granular Fill: Cover vapor retarder with granular fill, moisten, and compact with mechanical equipment to elevation tolerances of plus 0 inch or minus 3/4 inch.

3.5 STEEL REINFORCEMENT

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

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

B. Clean reinforcement of loose rust and mill scale, earth, ice, and other foreign materials.

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

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

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

Offset laps of adjoining…