Specifications.pdf

USDA Forest Service Prescott National Forest Project Specifications Copper Canyon Trailhead Entry Rd and Parking Lot

00100-1

SECTION 00100

MEASUREMENT AND PAYMENT

PART I - GENERAL

1.01 Measurement and Payment - Measurement and payment for contract work will be made only for and under pay items included in the SCHEDULE OF ITEMS. All other work and materials will be considered as included in the payment for items shown.

1.02 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 that 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, labor, transportation and incidentals to complete the job. They will not be measured.

1.03 BASE PAY ITEMS

1. Mobilization & Bonds – as per Section 01505

Measurement and Payment – LSQ per Section 01505

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2. Excavation and Embankment – work SHOWN ON DRAWINGS and described in the specifications to excavate, backfill and compact for all areas.

Measurement and Payment – DQ

3. Aggregate Base, Parking – work SHOWN ON DRAWINGS and described in the specifications place aggregate base for parking lot.

4. Loose Rock Rip Rap, 6” size – work SHOWN ON DRAWINGS and described in the specifications to salvage suitable rock from site and place riprap.

Measurement and Payment – AQ

5. Install Culvert Pipe, Steel, 48”, round dia. X 12 ga– work SHOWN ON DRAWINGS and described in the specifications install culvert pipe for entry roadway.

6. Aggregate Surfacing, Picnic Area – work SHOWN ON DRAWINGS and described in the specifications place aggregate base for picnic area.

7. Concrete Pad, Picnic Area and Concrete Sidewalk – work SHOWN ON DRAWINGS and described in the specifications to install concrete pad for picnic area and concrete sideway for toilet building.

8. Install Pedestal Grills, Government Furnished – work SHOWN ON DRAWINGS and described in the specifications install pedestal grills in picnic area.

9. Install Rock Barriers – work SHOWN ON DRAWINGS and described in the specifications furnish and install rock barriers.

10. Precast Concrete Toilet Building, Excavation and Backfill, Government Furnished – work SHOWN ON DRAWINGS and described in the specifications to excavate hole, place base course, backfill after toilet is delivered and placed by others, compact and final grading.

Measurement and Payment – LSQ

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1.04 ADDITIVE PAY ITEMS

1A. Ramadas, Purchase and Install– work SHOWN ON DRAWINGS and described in the specifications purchase and install four small ramadas.

Measurement and Payment – LSQ

PART II - PRODUCTS (Not Applicable)

PART III - EXECUTION (Not Applicable)

END OF SECTION

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01030-1

SECTION 01030

NOXIOUS WEED CONTROL

PART 1 - GENERAL

1.1 - Description

This work consists of weed prevention and control. The Contractor shall prevent new weed infestations and the spread of existing weed infestations at work site as specified herein. Work is incidental to other contract work.

PART 2 - PRODUCTS

None.

PART 3 - EXECUTION

3.1 - Equipment

The Contractor shall ensure all equipment brought onto to a project site is thoroughly washed/cleaned in order to remove all soil, vegetative matter, and other debris prior to entering a work site. Particular attention shall be given to the under carriage and any other surface where soil containing weed seed and propagules may exist.

The Contractor shall employ cleaning methods, approved by the Forest Service, to ensure that construction and maintenance equipment is free of noxious weeds.

Equipment shall be considered free of soil, seed, and other such debris when a visual inspection does not disclose such material. Equipment or component disassembly, or the need for specialized tools, are not required.

All equipment shall be available for inspection by the Forest Service.

Only after inspection by the Forest Service shall construction and maintenance equipment, and the equipment necessary to transport said equipment, be allowed to operate at a work site. All subsequent move-ins of equipment to a work site, or moves to another work site, shall be treated in the same manner as the initial move-in.

This requirement does not apply to service vehicles, water trucks, pickups, cars, and/or similar vehicles, if these vehicles are kept on routes designated weed free by the Forest Service.

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

01030-2

3.2 – General Project Work

The Contractor shall minimize soil surface disturbance wherever possible.

All fill and surfacing material sources shall be approved by the Engineer prior to being transported to the project site. All sources shall be free of noxious weed contamination.

New infestations of noxious weeds of concern to Forest Service and identified by either Contractor or Forest Service, on the project site or on haul routes the Contractor plans to use, shall be promptly reported to the other party. Contractor and Forest Service shall agree on treatment methods to reduce or prevent the spread of noxious weeds when new infestations are found. A current list of noxious weeds of concern to Forest Service is available at each Forest Service office.

END OF SPECIFICATION

01500-1

SECTION 01500

CONSTRUCTION FACILITIES AND TEMPORARY CONTROLS

PART I - GENERAL

1.01 Scope – This section specifies facilities and utilities for use during the contract. It also specifies temporary work, safety, and coordination controls.

1.02 Facilities – Existing Government facilities and utilities are available as indicated below and in the table “Host Site Summary”. Facilities shall be provided by the Contractor as specified

A. Temporary electricity – there is no electricity on site.

B. Temporary telephone – no landline phone service is available at the project sites. Cell phone coverage is currently spotty and sporadic.

C. Temporary water – there is no water service onsite.

D. Temporary sanitation – there is no services onsite. The Contractor must provide portable toilets for use onsite.

E. Temporary solid waste disposal – the Contractor shall provide solid waste disposal for any waste generated due to contract work or Contractor occupancy at the site.

G. Temporary storage and laydown space – there is no designated storage space at the work sites. Space may be utlized as needed and approved by the COR. Storage and laydown shall be located and used so as to not damage existing improvements, vegetation and ground surface.

H. Fuel and oil storage – no bulk petroleum products shall be stored at the project site.

1.03 Controls – All sites are located in undeveloped areas. Emphasis will be placed on the safety of the public and Contractor personnel and on protecting the Contractor’s work.

A. Security – the Contractor shall take reasonable measures to secure equipment and contract work against theft and vandalism. There is no regular patrol in the area, however, if needed, the local law enforcement is available for emergencies.

C. Excavation and work zone barriers – all open excavations shall be barricaded for the safety of contract personnel, vistors and the wandering public. Work zones shall be delineated and marked to adequately warn visitors from operating equipment and hazardous conditions. The Contractor is responsible for providing barrier materials and maintaining barriers such as temporary barricades, barrier tape, curbs, etc., at excavations and work zones.

D. Work limits – ground disturbance and equipment shall be confined to the minimal area in each area of work. The Contractor is responsible for establishing the work limits and

01500-2 marking or otherwise communicating the limits to Contractor personnel. Existing travel routes shall be utilized to access work sites – no cross-country travel between work sites will be allowed.

E. Fire protection – refer to contract Fire Plan requirements that determine Contractor responsibility for measures and equipment to prevent fires, work restrictions during fire danger, and assistance to be rendered in case of fire.

F. Equipment Washout – washing equipment used for concrete or mortar mxing and delivery at the project site shall not be to open ground or on pavement. Washout will be at approved locations to an earthen sump pit especially prepared to accept and settle cementatious materials. Material in the pits will be removed and properly disposed off the project site as part of project close-out. Backfill the pits with native material, compact and handrake area as final clean up.

H. Clean up – the Contractor shall remove all temporary facilities and restore prior conditions as part of project closeout. Any damage to existing improvements shall be repaired at the Contractor’s expense. Any disturbance to soil and vegetation outside of work limits caused by the Contractor shall be restored or mitigated according to direction from the COR.

I. Noxious Weed Control – the Contractor shall adhere to Specification 01030 to control the unwanted spread of noxious weeds.

1.03 Location of Underground Features – The Contractor is responsible for locating existing underground features including footings and utility lines. Utilize Blue Stake services and the assistance of the COR for locating features prior to any ground disturbing activity.

1.04 Excess Material Disposal – Areas for disposing of excess materials created during earthwork are SHOWN ON THE DRAWINGS or specified in these specifications. All debris or refuse generated by work under this contract shall be legally disposed of off-site.

1.05 Designated Material Source – No material sources are designated for this Contract

1.06 Work by Others – other activities, including construction may be concurrent with work under this contract. Anticipated work by others in includes, but is not limited to:

1. Clearing and grubbing

2. Installation of pipe rail fencing

3. Installation of interpretative signage

4. Installation of horse gate, cattle guard and road gate

5. Installation of OHV ramp

6. Delivery and placement of precast concrete toilet building and vault

1.07 Contracting Officer’s Representative (COR) - The COR is a Forest Service official designated by the Contracting Officer to perform day-to-day contract administration, including site inspections for quality assurance. References in these specifications to Owner’s Representative, Owner, or Engineer should be considered to mean the COR.

01500-3

01505-1

SECTION 01505

MOBILIZATION

PART I - GENERAL

1.01 Mobilization - This item is intended to compensate the Contractor for operations including, but not limited to, those necessary for the movement of personnel, equipment, supplies, and incidentals to the project site; for payment of premiums for bonds and insurance for the project;

and for any other work and operations which must be performed or costs that must be incurred incident to the initiation of meaningful work at the site and for which payment is not otherwise provided for under the contract.

1.02 Method of Measurement - The measurement shall be lump sum for mobilization.

1.03 Basis of Payment - The lump sum price shall include full compensation for mobilization.

Progress payments for mobilization will be made as follows:

A. Bond premiums will be reimbursed after receipt of the evidence of payment.

B. 50% of the lump sum, not to exceed 5% of the original contract amount, will be paid following completion of 5% of the original contract amount not including mobilization and bond premiums.

C. Payment of the remaining portion of the lump sum, up to 10% of the original contract amount, will be paid following completion of 10% of the original contract amount not including mobilization and bond premiums.

D. Any portion of the lump sum in excess of 10% of the original contract amount will be paid after final acceptance.

Progress payments for mobilization and preparatory work shall be subject to retainage.

02200-1

SECTION 02200

EARTHWORK

1.01 Scope - Provide all earthwork as SHOWN ON DRAWINGS and specified herein. Earthwork includes, but is not limited to the following:

• Minor pavement cutting and patching

• Trenching

• Backfilling, including non-shrink concrete slurry backfill under pavement

• Rough grading previously disturbed areas to restore a natural ground appearance to blend with surrounding areas

• Excavation of in-place material and placement of compacted fill and embankment associated with site work, including building pads, parking, roads and trails

• Grading and final preparation of subgrade for concrete slabs, site equipment, surfaced areas, walkways, parking and roads

• Placement and grading of crushed aggregate base or leveling course for retaining wall foundation, concrete slabs and precast concrete structures

• Minor removal, hauling and disposal of obstructions such as trees, stumps, brush, accumulation of rubbish of whatever nature, and existing structures not provided for in other Sections of these specifications or on the drawings

• Providing control of erosion, sedimentation and dust

• Structural excavation and backfill to the levels and lines shown on the drawings

• Stockpiling excavated material suitable for backfill at locations and in a safe manner and providing proper protection to prevent contamination of the stockpiled material

• Disposing off-site of surplus or unsuitable material

• Providing additional approved off-site material for filling, rough grading and compacting, where necessay.

• Fine grading unsurfaced areas adjacent to buildings and site equipment

1.02 Reference Specifications – MAG Construction Standards

1.03 Definitions -

A. Excavation - consists of removal of material to line and grade indicated and any necessary disposal of materials removed.

B. Unauthorized excavation - consists of removal of materials beyond indicated subgrade elevations or dimensions without specific direction of COR.

C. Structural excavation - consists of excavation for foundations and structures to subgrade elevation and horizontally to an extent that provides adequate clearance for installation or construction of the structure.

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1.04 Quality Assurance - Perform excavation work in compliance with applicable requirements of governing authorities having jurisdiction and with the Section 01400 Quality Control portion of these specifications, if included.

A. Materials – perform sampling and testing of materials for gradation and other specified qualities per Section 01400 Quality Control (if included in these specifications).

B. Compaction testing – perform sampling and testing for compaction density per Section

01400 Quality Control. (if included in these specifications).

C. Default testing and certification - in the absence of a Qualilty Control section of these specifications, no sampling and testing is required, except in the case that the COR desires reasonable confirmation that the required materials, moisture conditions and compacted density meet specifications. If the COR requests testing, testing costs shall be born by the Government. The COR may request certification of processed materials delivered to the site as reasonable confirmation that materials meet specifications.

1.05 Job Conditions -

A. Permits and coordination - prior to excavation obtain necessary permits from other agencies or public utilities.

B. Protection of existing utilities - prior to excavation, locate existing underground utilities in areas of work. Contractor is required to contact public utilities "Blue Stake" service prior to excavation (phone 1-800-782-5348). Request assistance from COR for prior location of Owner utilities.

For utilities that are to remain in place, provide adequate means of support and protection during earthwork operations.

Should uncharted, or incorrectly charted, piping or other utilities be encountered during excavation, consult Utility Owner and COR immediately for directions. Cooperate with COR and with public and private utility companies in keeping respective services and facilities in operation. Repair damaged utilities to satisfaction of utility Owner.

C. Protection of persons and property - barricade open excavations occurring as part of this work adequate to protect vehicles and pedestrians. Post with warning lights and signs when nighttime protection is required. Operate warning lights as recommended by authorities having jurisdiction.

Protect structures, utilities, sidewalks, pavements, and other facilities from damage caused by settlement, lateral movement, undermining, washout and other hazards created by earthwork operations.

Clear and grub trees and shrubs only when indicated on the drawings or when approved by the COR. Protect vegetation at the work site from disturbance.

D. Use of explosives - the use of explosives is permitted only with the approval of the COR.

02200-3

PART II - PRODUCTS

2.01 Fill Materials -

A. Common - on-site or off-site material material free from trash, debris, roots over 1" diameter, rocks over 3" in diameter, topsoil, highly plastic soil, or other deleterious matter.

B. Select - on-site or off-site material, selected to have qualities of a very sandy clay to clayey sand free from trash, debris, roots, rocks over 3" in diameter, topsoil, highly plastic soils or other deleterious matter: Liquid Limit less than 30 and Plasticity Index between 4 and 12.

C. Borrow – common or select material obtained from an off-site source.

D. Bedding and shading - for tank, vault, pipe and conduit bedding: 1/4 in. minus granular material such as gravel, decomposed granite, or sand; 100 per cent passing a #4 sieve and a maximum Plasticity Index of 10.

E. Crushed rock or aggregate – base for cast-in-place concrete, vault foundation, retaining wall foundation, and backfill for drain sumps and retaining walls: crushed stone with angular faces, even grading of rock and fines, from a local commercial source as normally supplied for 3/4 inch aggregate base course (ABC) and meeting the requirements of MAG Specification 702 Aggregate Base.

F. Select surfacing - commercial source decomposed granite or similar material, with sufficient binder to provide a compacted, stable surface suitable for wheelchair movement on walkways and camp site living areas. Gradation shall be:

Sieve Size Percentage by Weight Passing Sieve

3/4" 100 1/4" 50-60 No. 200 5-9

G. Non-shrink concrete slurry - as specified in MAG Standard Detail 2-01.

PART III – EXECUTION

3.01 Excavation – Unless noted otherwise, excavation is Unclassified, remove existing material to subgrade elevations and horizontal extent indicated, regardless of character of materials and obstructions encountered.

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A. Clearing and grubbing - clear and grub plant material prior to excavation. Clear and remove plant materials within the limits of excavation, including fill areas. Selectively prune brush and trees to allow access for equipment and structures when plants and trees are designated to remain. Perform additional clearing and grubbing where indicated to create areas free of plant material in storage areas or inside fenced areas.

1. Grubbing - excavate the main mass of root and plant material below ground in areas to be excavated or where otherwise indicated on the drawings. Remove any roots which protrude into trench or structural excavations. When grubbing creates cavities below finished grade, perform backfill and grading according to following parts of this Section to restore the grubbed area to compacted, finished grade.

2. Disposal – unless NOTED ON DRAWINGS, disposal of material from clearing and grubbing shall be by the following methods and at Contractor’s option.

a. Remove and dispose – dispose legally at a State-approved landfill

b. Chip and spread – chip and shred vegatative material into pieces no larger than 1 inch diameter and 6 inches long. Spread chips in a layer 2 inches or less on project areas SHOWN ON DRAWINGS or as directed by the COR.

B. Unauthorized excavatioin - unauthorized excavation, as well as resulting remedial work directed by COR, shall be at Contractor's expense.

1. Remedial work - Under footings or foundation bases, fill unauthorized excavation by extending indicated bottom elevation of footing or base to excavation bottom, without altering required top elevation. Lean concrete fill or concrete slurry may be used to bring elevations to proper position, when acceptable to COR.

Elsewhere, backfill and compact unauthorized excavations as specified for authorized excavations of same classification, unless otherwise directed by the

COR.

C. Unsuitable material - if unsuitable materials are encountered at required subgrade elevations, carry excavations deeper and replace excavated material as directed by COR.

Removal of unsuitable material and its replacement as directed will be paid on basis of contract conditions relative to changes in work.

D. Stability of excavations - slope sides of excavations to comply with local codes and ordinances having jurisdiction. Shore and brace where sloping is not possible because of space restrictions or stability of material excavated. Maintain sides and slopes of excavations in safe condition until completion of backfilling.

1. Shoring and bracing - establish requirements for trench shoring and bracing to comply with local codes and authorities having jurisdiction. Provide materials for shoring and bracing, such as sheet piling, uprights, stringers and cross-braces, in good serviceable condition as required. Maintain shoring and bracing in

Copper Canyon Trailhead Entry Rd and Parking Lot

02200-5 excavations regardless of time period excavations will be open. Carry down shoring and bracing as excavation progresses.

E. Dewatering - prevent surface and subsurface water from flowing into excavations and from flooding project site and surrounding area.

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 rainwater and water removed from excavations to collecting or run-off areas. Do not use trench excavations as temporary drainage ditches.

F. Building pads - excavate a minimum depth below proposed finish floors to conform to elevations and dimensions shown within a tolerance of plus or minus 0.05', and extending to the outside of the building line.

G. Structural excavation - excavate for foundations, tanks, vaults and structures to conform to the grades shown. For tanks, slabs and other work indicated to receive subbase or bedding, excavate to subbase depth indicated, or, if not otherwise indicated, to 6" below bottom of work to be supported. Extend excavation horizontally to provide adequate clearance for installation or construction including formwork, bracing, damp-proofing, and compaction of backfill.

3.02 Material Storage - Stockpile excavated materials where directed, until required for backfill or fill. Place, grade and shape stockpiles for proper drainage. Locate and retain soil materials away from edge of excavations. Do not store within drip line of trees indicated to remain. Dispose of excess soil material and waste materials as herein specified.

3.03 Cold Weather Protection - Protect trench and structural excavation bottoms against freezing when air temperature is less than 35 °F (1 °C).

3.04 Site Fill – Form fills and embankments from suitable common or select material obtained from on-site excavation or, when necessary, from borrow. Place in uniform lifts to required subgrade elevation. Compact each lift as specified elsewhere in this Section.

A. Ground surface preparation - remove vegetation, debris, unsatisfactory soil materials, obstructions, and any other deleterious materials from ground surface prior to placement of fills. Plow, strip, or break-up sloped surfaces steeper than 1 vertical to 4 horizontal so that fill material will bond with existing surface.

When existing ground surface has a density less than that specified under 3.07 Compaction, break up ground surface, pulverize, moisture-condition to optimum moisture content, and compact to required depth and density.

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B. Placement - place fill materials in uniform layers. Hold layers to thickness that will achieve specified compaction. Placement shall start in the deepest area and progress approximately parallel to the finished grade.

Before compaction, moisten and mix each layer as necessary to provide optimum moisture content. Do not place or fill material on surfaces that are muddy, frozen, or contain frost or ice. Do not use frozen fill material.

3.05 Backfill for Structures and Trenches - Backfill with materials of the type and to the depth shown on the drawings. Use common material for backfill if no material is specified. Place material carefully to avoid damage and displacement to piping, conduit, structures, or tanks.

Place material in uniform lifts. Compact each lift as specified elsewhere in this Section. Do not backfill with frozen material.

A. Backfill at footings - backfill trenches with concrete where trench excavations pass within 18" of column or wall footings and which are carried below bottom of such footings, or which pass under wall footings. Place concrete to level of bottom of adjacent footing.

B. Slurry backfill at pavement crossings - backfill trenches in existing paved roadways and other locations SHOWN ON DRAWINGS with non-shrink concrete slurry.

C. Prior Approval - backfill shall not be placed until authorized by the COR. Approval to backfill will not be made until the following conditions are met:

• Adequate strength of concrete that supports backfill has been attained

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

• Inspection, testing, approval, and recording locations of underground utilities installed under this contract

• Removal of concrete formwork

• Removal of shoring and bracing, and backfilling of voids with satisfactory materials.

• Removal of trash and debris

• Tanks and walls are adequately braced or anchored against displacement

• Removal of free of water, ice and mud

3.07 Compaction - Compact site fill and backfill in a controlled fashion. Place materials in uniform horizontal lifts adjacent to structures, piping or conduit to required elevations. Take care to prevent wedging action of backfill against structures or displacement of piping or conduit by carrying material uniformly around structure piping or conduit to approximately the same elevation in each lift.

A. Placement - control soil compaction during construction by placing material in level, loose, even and successive lifts.

1. Depth of lifts - the resulting compacted depth of each lift shall not exceed six (6) inches.

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B. Compactive effort – site fill and backfill compaction shall be obtained by a minimum of three (3) passes over the entire surface of each lift by motorized mechanical means with equipment designed for compacting, such as a muli-wheel rubber tired roller, steel wheel roller, sheepsfoot roller, vibratory plate, or rammer.

1. Specified soil density - compaction effort shall provide a soil density of at least 95 percent of optimum as measured by ASTM D698 (Standard Proctor Density).

C. Density testing - refer to 1.04 Quality Assurance for sampling and testing requirements for soil density of compacted site fill and backfill.

D. Moisture control - where subgrade or fill material requires moisture conditioning before compaction, uniformly apply water to layers of soil material. Prevent overwatering. No free water shall appear on subgrade surface or the top of lifts during, or subsequent to, compaction operations.

Remove and replace, or scarify and air dry, soil material that is too wet to permit compaction. Material may be stockpiled or spread and allowed to dry. Assist drying by discing, harrowing or pulverizing until moisture content is reduced to a satisfactory value.

Do not compact material when the moisture varies more than 4% above or 1% below the optimum moisture content. A uniform moisture content will be required throughout the layers of fill material. Wetting or drying manipulation shall be required if necessary to accomplish this. Suspend compaction operations when satisfactory results cannot be obtained because of rain or other unsatisfactory conditions.

3.08 Grading - Finish earthwork surfaces to line and elevation. Uniformly grade areas within limits of grading as shown on plans, including adjacent transition areas. Smooth finished surface within specified tolerances, compact with uniform levels or slopes between points where elevations are indicated, or between such points and existing grades.

A. Grading and tolerance for site work - grade areas for site equipment, parking areas, roads and walkways to drain away from buildings and as indicated. Final grading shall prevent ponding. Grade for a natural appearing transition between earthwork areas and undisturbed areas. Finish surfaces free from irregular surface changes within a tolerance of 1 in. when tested with an 8 ft. straightedge.

B. Grading and tolerance for building pads and camp sites - grade smooth and even, free of voids, and to required elevation. Surface tolerance is to be within 1/2 " when tested with a 8' straightedge.

C. Compaction - after grading, compact surfaces to a soil density equal to that specified for fill material. Tolerances for final grading shall be met after compaction is complete.

D. Hand raking and cleanup - final grading shall include hand raking and cleanup of disturbed by earthwork when indicated by the conditions in this clause. Hand rake to blend the area to match adjacent undisturbed areas. Remove and dispose of rocks, rubble

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02200-8 and debris larger than 2 inches. Areas for hand raking shall be designated by COR and include the following:

o Fill and cut slopes in campgrounds, unless excepted by COR o Disturbed areas in campgrounds where no surface material is applied o Adjacent to buildings o Foot paths or high foot traffic areas o High visibility areas where a finished appearance is necessary o Areas to be seeded

3.09 Maintenance - Protect earthwork areas from wet-weather traffic and erosion. Keep free of trash and debris. Repair and re-establish grades in disturbed, settled, eroded, and rutted areas to specified soil density and final grading tolerances.

A. Settling - where settling is measurable or observable in earthwork areas during general project warranty period, remove surface (pavement, lawn or other finish), add backfill material, compact, and replace surface treatment. Restore appearance, quality, and condition of surface or finish to match adjacent work, and eliminate evidence of restoration to greatest extent possible.

3.10 Pavement Cutting and Patching - Where excavation is under existing pavement, saw cut pavement and remove asphalt before excavating. Patch asphalt over the top of non-shrink conrete slurry backfill with at least 2 inches of hot mix bituminous asphalt. Prime edges of pavement cut with liquid bituminous material before placing patch material. Refer to MAG Standard Detail 2-01.

3.11 Disposal of Excess and Unsuitable Earthwork Material - Transport all excess suitable excavated material to a designated waste area. Stockpile material, spread material as indicated on the drawings, or shape material at the waste area as directed by the COR.

A. Default waste area – if no waste area is designated on the drawings or otherwise indicated in contract documents, all excess material shall be transported and legally disposed off-site.

B. Unsuitable material - remove unsuitable excavated materials, rubble and debris and dispose legally off-site.

02220-1

SECTION 02220

ROAD AND SPUR EXCAVATION AND EMBANKMENT

PART 1 - GENERAL

1.1 SUMMARY

A. This work shall consist of excavation and shaping of roadway, borrow excavation, drainage excavation, removal of slide material, excavation of unsuitable material, embankment construction, and disposal of all excavated material necessary for the completion of construction including roadway ditches, channel changes, furrows, slope rounding, benches, berms, dips, approaches, and subsidiary work.

1.2 EXCAVATION CLASSIFICATION

A. Unclassified Excavation

1. Unclassified excavation shall consist of the excavation of all materials of whatever character required for the work, obtained within the construction limits, including surface boulders and excavation for ditches and channels that is not removed under some other item.

B. Rock Excavation

1. Rock excavation shall consist of igneous, metamorphic, and sedimentary rock which cannot be excavated without blasting or the use of rippers, including all boulders or other detached stones having a volume of 2.5 cubic yard or more, as determined by physical or visual measurement.

2. Blasting shall not be permitted.

C. Borrow excavation shall consist of sites and procedures approved in advance in writing by the Contracting Officer.

PART 2 – PRODUCTS (NOT APPLICABLE)

PART 3 - EXECUTION

3.1 CLEARING & GRUBBING

A. Clearing and grubbing shall be accomplished in accordance with Section 02200 before work under this section begins, except grubbing of stumps when approved by the Contracting Officer may proceed concurrently with excavation. Excavation and

02220-2 placement operations shall be conducted so material to be treated under Section 02200 will not be incorporated in the roadway.

3.2 UTILIZATION OF EXCAVATED MATERIALS

A. 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.

1. Excess Excavation. Excess excavation shall be disposed of by the Contractor off of Forest land.

2. Rock for Slope Protection. Excavated rock suitable for protection of embankments may be conserved

3. Conserving Material. Material encountered in the excavation, suitable for cushion, road finishing, or other purposes, may be conserved and utilized.

Excessively wet material that is otherwise suitable for embankment shall be field drained and dried before placement.

4. Excavation of Unsuitable Material. Unsuitable material shall be excavated.

Disposal will be by the Contractor off of Forest land. Excavated areas shall be backfilled with suitable material when necessary to complete the work. Frozen material shall not be placed in embankments. Rocks that are 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.

5. Conservation of Topsoil. Suitable topsoil shall be removed, transported, and deposited in the stockpile area designated by the Contracting Officer

3.3 DRAINAGE EXCAVATION

A. Drainage excavation shall include construction of side ditches, minor channel changes, inlet and outlet ditches, furrow ditches, ditches constructed along the road but beyond the roadway limits, and other minor earth drainage structures as shown on the drawings. Excavated material shall be utilized in accordance with Subsection 3.2.

3.4 FINISHING ROADBED

A. For roads receiving aggregate base or surface course, only rocks that do not protrude above the subgrade more than one-third of the depth of the base or surface course, or 3 inches, whichever is less, may remain in place.

B. The subgrade shall be visibly moist during shaping and dressing. Low sections, holes, cracks, or depressions shall be brought to grade with suitable material approved by the Contracting Officer.

3.5 SNOW REMOVAL

02220-3

A. Snow or ice shall not be incorporated in the embankment. Snow shall be removed in advance of the work and deposited beyond the roadway limits in a manner that will not cause resource damage or waste material.

3.6 FINISHING SLOPES

A. Finished slopes shall conform reasonably to the lines staked on the ground or shown on the drawings. The finished slope shall be left in a roughened condition to facilitate the establishment of vegetative growth. The finish associated with template and stringline or handraking methods will not be allowed. Loose rock, loose debris, and other loose material, each of which is larger than 6 inches in diameter, shall be removed from the slope.

B. The tops of excavations, excluding areas of solid rock, shall be blended with the adjacent terrain by rounding. Decomposed rock that may be cut without blasting or ripping shall be rounded. Earth overlying rock shall be rounded above the rock.

3.7 OVERBUILDING & LANDSCAPE & STREAM PROTECTION

A. Unless otherwise agreed to by the Contracting Officer, excavation or embankment material shall be confined within the roadway limits to avoid overbuilding and to protect the landscape and streams.

3.8 WATER

A. Water shall be furnished by the contractor from an off site source.

3.9 EMBANKMENT METHODS

A. When an embankment is to be placed across swampy ground and removal of unsuitable material or subgrade treatment is not required, the lower part of the embankment shall be constructed in a single layer to the minimum depth necessary to support construction equipment.

B. All embankments shall be placed by layer placement (Roller Compaction).

C. Compaction shall be obtained by equipment in compliance with the requirements of Section 02226 Subsection 3.1(A). Compaction equipment shall be operated over the full width of each layer.

D. Embankment and Compaction specific for spur or roadway.

1. Embankments for new roadway shall be placed in horizontal layers not exceeding 6 inches (loose measure) and compacted. Material shall be at moisture content suitable for attaining the required compaction. The specified course of roadway embankment shall be compacted to at least 95 percent of the

02220-4 target density. Density will be tested by a portable nuclear moisture-density test device in accordance with AASHTO T238 and T239.

2. Embankments for spurs shall be placed in horizontal layers not exceeding 12 inches (loose measure) and compacted. Material shall be at moisture content suitable for attaining the required compaction. Subgrade material shall be moistened or dried to a uniform moisture content suitable for compaction and compacted until visible deformation of the layer ceases or in the case of the sheepfoot roller, the roller "walks out" of the layer. At least three complete passes shall be made.

3.10 CONSTRUCTION TOLERANCES

A. The tolerance shall be as follows:

1. Roadbed Width (Feet).........+ 0.5

2. Subgrade Elevation (Feet)....+/- 0.1

3. Centerline Alignment (Feet).. + 0.2

4. Slopes, Excavation and Embankment (Percent Slope)+/- 3.

a. Maximum allowable deviation from construction stakes and drawings.

b. Maximum allowable deviation from staked slope measured from slope stakes or hinge points.

B. Roadway ditches shall be constructed to flow in the direction shown on the drawings.

C. Deviations shall be uniform in the direction of change for a distance of 200 feet or more along the project centerline.

02226-1

SECTION 02226

COMPACTION EQUIPMENT

PART 1 - GENERAL

1.1 SUMMARY

A. Compaction equipment is described.

PART 2 – PRODUCTS (NOT APPLICABLE)

PART 3 - EXECUTION

3.1 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. Minimum requirements for rollers are as follows:

1. Sheepsfoot, tamping, or grid rollers shall be capable of exerting a force of 250 pounds per inch of width of roller drum.

2. 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.

3. 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.

4. Pneumatic-tire rollers shall have smooth tread tires of equal size that will provide a uniform compacting pressure for the full width of the roller and capable of exerting a ground pressure of at least 80 psi.

5. Heavier compacting units may be required to achieve the specified density of the embankment.

02228-1

SECTION 02228

CULVERT PIPE

1.01 This work shall consist of furnishing and installing, or installing only, metal pipe and pipe appurtenances, including all excavation, bedding, and backfilling required to complete the work.

1.02 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.

AASHTO M36M Corrugated Steel Pipe Metallic-Coated for Sewers and Drains AASHTO M167M Corrugated Steel Structural Plate Zinc-Coated for Field-Bolted Pipe Pipe-

Arches and Arches AASHTO M190M Bituminous Coated Corrugated Metal Culvert Pipe and Pipe Arches AASHTO M196M Corrugated Aluminum Pipe for Sewers and Drains AASHTO M218M Steel Sheet Zinc-Coated (Galvanized) for Corrugated Steel Pipe AASHTO M219M Corrugated Aluminum Alloy Structural Plate for Field-Bolted Pipe Pipe-

Arches and Arches AASHTO M243M Field Applied Coating of Corrugated Metal Structural Plate for Pipe Pipe-

Arches and Arches AASHTO M245M Corrugated Steel Pipe Polymer Precoated for Sewers and Drains AASHTO M246M Steel Sheet Metallic-Coated and Polymer Precoated for Corrugated Steel

Pipe AASHTO M274M Steel Sheet Aluminum-Coated (Type 2) for Corrugated Steel Pipe AASHTO T99 The Moisture-Density Relations of Soils Using a 25-kg (55-lb) Rammer and a 305-mm (12-in) Drop

2.01 Corrugated Iron or Steel Pipe and Pipe Arches

A. Riveted Pipe and Pipe Arches - These pipes shall meet the requirements of AASHTO M36.

B. Welded Pipe and Pipe Arches - Corrugated metal pipe and pipe arches fabricated by resistance spot welding shall meet the applicable requirements of AASHTO M36.

C. Helical Pipe - Unperforated helically corrugated pipe with continuous lock or welded seams shall meet the applicable requirements of AASHTO M36.

D. Coupling Bands - Coupling bands shall meet the requirements of AASHTO M36.

E. Special Sections - Special sections such as elbows, tees, wyes, etc., shall be the same thickness as the conduit to which they are joined and meet the applicable requirements of

AASHTO M36.

02228-2

F. Flared End Sections - Flared end sections for inlet and outlet ends of pipe and pipe arch culverts shall meet the applicable requirements of AASHTO M36. End sections shall be fabricated in accordance with the details and dimensions SHOWN ON THE DRAWINGS, except minor variations may be accepted to permit the use of the manufacturer's standard methods of fabrication.

2.02 Bituminous Coated Corrugated Iron or Steel Pipe and Pipe Arches - These conduits and their coupling bands shall meet the requirements of AASHTO M190. The coating shall be Type A, B, C, or D as specified. Coupling bands shall be fully coated with bituminous material.

Special sections, such as elbows and prefabricated flared end sections, shall meet the applicable requirements of AASHTO M190. Coating and invert paving shall be of the type specified.

Flared end sections shall meet the requirements of AASHTO M243 or M190 for the coating specified. The Contracting Officer may waive the imperviousness test for coated pipe if no separation of coating from metal is observed.

When asbestos-bonded bituminous coating is specified, the above requirements shall apply; in addition, the special process of embedding asbestos fiber in the molten metallic bonding meduim shall be used to bond the bituminous coating. Asbestos-bonded corrugated metal pipe shall be fabricated in accordance with AASHTO M36 using asbestos-bonded sheets of base metal specified therein. Both sides of the metal sheets shall be coated with a layer of asbestos fibers pressed into the molten zinc bonding medium. Immediately after the metallic bond has solidified, the asbestos fibers shall be thoroughly impregnated with a bituminous saturant. The finished sheets shall be uniformly coated and free from blisters. After fabrication, the culvert sections shall be treated as specified for type A, B, or C in accordance with AASHTO M190.

Coupling bands shall meet the requirements of AASHTO M36.

2.03 Polymeric Precoated Steel Pipe, Pipe Arches, and Underdrains

A. Pipe shall meet the requirements of AASHTO M245.

B. Coupling bands shall meet the requirements of AASHTO M245.

C. Special sections such as elbows, tee, wyes, etc., shall be the same thickness as the conduit to which they are joined.

D. Flared end sections for attachment to the inlet and outlet ends of pipe and pipe arch culverts shall meet the applicable requirements of AASHTO M243 and M246. End sections shall be fabricated in accordance with the details and dimensions SHOWN ON THE DRAWINGS, except that minor variations may be accepted to permit the use of the manufacturer's standard methods of fabrication.

2.04 Corrugated Iron or Steel Pipe For Underdrains, Plain Galvanized or Precoated - Plain galvanized pipe shall meet the requirements of AASHTO M36. Precoated underdrains shall meet the requirements of AASHTO M245.

2.05 Bituminous Coated Iron or Steel Pipe For Underdrains - Pipe shall meet the requirements of

AASHTO M36 and shall be coated with bituminous material to meet the requirements of

02228-3

AASHTO M190, Type A coating, except that minimum coating thickness shall be 0.03 inch.

Coupling bands shall be fully coated. The specified minimum diameter of perforations shall apply after coating. The Contracting Officer may waive the imperviousness test if no separation of coating from metal is observed.

2.06 Corrugated Aluminum Alloy Culvert Pipe and Pipe Arches - Pipe shall meet the requirements of AASHTO M196.

2.07 Corrugated Aluminum Alloy Pipe For Underdrains - Pipe shall meet the requirements of

AASHTO M196.

2.08 Bituminous Coated Corrugated Aluminum Alloy Culvert Pipe and Pipe Arches - Pipe shall meet the requirements of AASHTO T196 and shall be coated with bituminous material meeting the requirements of AASHTO M190. Coating and invert paving shall be of the type specified.

2.09 Bituminous Coated Corrugated Aluminum Alloy Pipe Underdrains - Pipe shall meet the requirements of AASHTO M196 and shall be coated with bituminous material meeting the requirements of AASHTO M190.

2.10 Structural Plate For Pipe, Pipe Arches, and Arches - The pipes and bolts and nuts for connecting plates shall meet the requirements of AASHTO M167.

2.11 Full Bituminous Coated Structural Plate Pipe, Pipe Arches, and Arches - Pipes shall meet the requirements of AASHTO M167 and shall be coated with bituminous material meeting the requirements of AASHTO M243.

2.12 Aluminum Alloy Structural Plate For Pipe, Pipe Arches, and Arches - Pipes and the bolts and nuts for connecting plates shall meet the requirements of AASHTO M219.

2.13 Aluminum Coated (Aluminized Type 2) Corrugated Steel Pipe and Pipe Arches

A. Pipe and coupling bands shall meet the requirements of AASHTO M36 except that they shall be made from material meeting the requirements of AASHTO M274.

B. Special sections such as elbows, tee, wyes, etc., shall be the same thickness as the conduit to which they are joined and shall meet the applicable requirements of AASHTO M36 and M274.

Bedding and backfill material shall meet the requirements of paragraph 3.08.

Damaged spelter coating caused by welding, field cutting, or mishandling shall be cleaned and painted as specified in AASHTO M36.

End sections shall be constructed of a material meeting the requirements of AASHTO

M218 or AASHTO M196.

Bituminous coated end sections shall be coated to meet…