AG-82B1-S-10-0128_fsss Specifications.pdf

AG-82B1-S-10-0128 RECOVERY Rawhide Creek Culvert Replacement

Forest Service Supplemental Specifications i

Table of Contents

Preface ........................................................................................................................................... iii 101 - Terms, Format, and Definitions

101.01 Meaning of Terms

101.03 Abbreviations

101.04 Definitions

102 - Bid, Award, and Execution of Contract 102 Bid, Award, and Execution of Contract

103 - Scope of Work 104 - Control of Work

104.03 Specifications and Drawings

104.06 Load Restrictions

105 - Control of Material

105.02 Material Sources

106 - Acceptance of Work

106.07 Delete

107 - Legal Relations and Responsibility to the Public

107.02 Protection and Restoration of Property and Landscape

107.05 Responsibility for Damage Claims

107.06 Contractor’s Responsibility for Work

107.09 Legal Relationship of the Parties

107.10 Environmental Protection

108 - Prosecution and Progress

108 Delete

109 - Measurement and Payment

109.02 Measurement Terms and Definitions

109 Deletions

109.06 Pricing of Adjustments

109.07 Eliminated Work

109.08 Progress Payments

109.09 Final Payment

109.10 Methods of Measurement

151 - Mobilization

151.01 Description

155 - Schedules for Construction Contracts 156 - Public Traffic

156.03 Accommodating Traffic During Work

156.04 Maintaining Roadways During Work

156.08 Traffic and Safety Supervisor

157 - Soil Erosion Control

157.02 Materials

157.03 General

157.04 Controls and Limitations on Work

201 – Clearing and Grubbing Construction Requirements ii

201.06 Disposal

201.08 203 - Removal of Structures and Obstructions

203.01 Work

203.05 Disposing of Material

204 - Excavation and Embankment

204.11 Compaction

204.13 Sloping, Shaping, and Finishing

204.14 Disposal of Unsuitable or Excess Material

204.16 (e) Waste 208 - Structure Excavation and Backfill for Selected Major Structures 272 - Geocell Abutment Stabilization 301 - Untreated Aggregate Courses

301.06 Surface Tolerance

553 – Prestressed Concrete

553.03 Method Approval

553A – Precast Concrete Structures

622 - Rental Equipment

622.02 Rental Equipment

622.04

625 – Turf Establishment

625.07 Seeding. .......................................................................... Error! Bookmark not defined.

625.08 Mulching ........................................................................ Error! Bookmark not defined.

626 – Plants, Trees, Shrubs, Vines, and Groundcovers ................. Error! Bookmark not defined.

648 - Stream Simulation

680 – Detour Road

713 - Roadside Improvement Material

713.05 Mulch

725 - Miscellaneous Material

725.30 Fiber Reinforced Pad

725.40 High-Strength Nonshrink Grout

725.41 Mortar

iii

Preface

Preface_wo_03_15_2004_m

Delete all but the first paragraph and add the following:

The Forest Service, US Department of Agriculture has adopted FP-03 for construction of

National Forest System Roads.

101 - Terms, Format, and Definitions

101.01_nat_us_02_17_2005

101.01 Meaning of Terms.

Add the following:

Delete all references in FP-03 to Transportation Acquisition Regulations (TAR).

101.03_nat_us_02_17_2005

101.03 Abbreviations.

Add the following to (a) Acronyms:

AFPA

MSHA

NIST

NESC

WCLIB

American Forest and Paper Association

Mine Safety and Health Administration

National Institute of Standards and Technology

National Electrical Safety Code

West Coast Lumber Inspection Bureau

Add the following to (b) SI Symbols:

mp Milepost ppm Part Per Million

101.04_nat_us_02_22_2005

101.04 Definitions.

Delete the following definitions and substitute the following:

Bid Schedule--The Schedule of Items.

Bridge--No definition.

Contractor--The individual or legal entity contracting with the Government for performance of prescribed work. In a timber sale contract, the contractor is the “purchaser”.

Culvert--No definition.

Right-of-Way--A general term denoting (1) the privilege to pass over land in some particular line (including easement, lease, permit, or license to occupy, use, or traverse public or private lands), or (2) Real property necessary for the project, including roadway, buffer areas, access, and drainage areas.

http://www.nist.gov/

Add the following:

Adjustment in Contract Price--“Equitable adjustment,” as used in the Federal Acquisition

Regulations, or “construction cost adjustment,” as used in the Timber Sale Contract, as applicable.

Change--“Change” means “change order” as used in the Federal Acquisition Regulations, or

“design change” as used in the Timber Sale Contract.

Forest Service--The United States of America, acting through the Forest Service, U.S.

Department of Agriculture.

Neat Line--A line defining the proposed or specified limits of an excavation or structure.

Pioneer Road--Temporary construction access built along the route of the project.

Purchaser--The individual, partnership, joint venture, or corporation contracting with the

Government under the terms of a Timber Sale Contract and acting independently or through agents, employees, or subcontractors.

Protected Streamcourse--A drainage shown on the plans or timber sale area map that requires designated mitigation measures.

Road Order--An order affecting and controlling traffic on roads under Forest Service jurisdiction. Road Orders are issued by a designated Forest Officer under the authorities of 36

CFR, part 260.

Schedule of Items--A schedule in the contract that contains a listing and description of construction items, quantities, units of measure, unit price, and amount.

Utilization Standards--The minimum size and percent soundness of trees described in the specifications to determine merchantable timber.

Add Figure 101-1—Illustration of road structure terms:

Figure 101-1—Illustration of road structure terms.

R ig h t o f

W a y

R o a d s id e R o a d s id e

C le a ri n g W id th

R o a d w a y

C le a ri n g

L im it X

Y

G ro u n d

L in e

T ra v e le d

W a y

C L B e rm

S u rf a c e

C o u rs e

B a s e

C o u rs e

F ill

S lo p e

B a c k S lo p e

D ra in a g e D itc h

G ro u n d

L in e

S u b g ra d e

R o a d B e d

S h a p e s a n d d im e n s io n s w ill v a ry t o f it l o c a l c o n d iti o n s

S e e d ra w in g s f o r ty p ic a l s e c tio n s

X a n d Y d e n o te c le a ri n g o u ts id e o f ro a d w a y

N o te

Right - of - Way Line

Right - of - Way Line

Clearing Limit

Shoulder

Shoulder

102 - Bid, Award, and Execution of Contract

102.00_nat_us_02_16_2005

102 Bid, Award, and Execution of Contract

Delete Section 102 in its entirety.

103 - Scope of Work

103.01 Intent of Contract. Delete this subsection and replace with the following:

Rawhide Creek 250-67.2

The intent of the contract is to remove and replace two existing corrugated steel pipes with a concrete bridge at Rawhide Creek on Road No. 250 in the Clearwater National Forest. The structure is located in the North Fork Ranger District in Section 15, T. 41 N., R. 11 E., Clearwater County, Idaho.

This project includes removing and disposing two existing culverts, structural excavation, roadway embankment, backfilling, compacting, furnishing and setting precast concrete bridge, riprap, and hauling and placing aggregate base and asphalt surfacing. The precise details of performing the work are not stipulated except as considered essential for the successful completion of the work. Furnish all labor, material, equipment, tools, transportation, and supplies necessary to complete the work according to the contract.

Delete the remaining subsections in this Section.

104 - Control of Work

104.01_nat_05_11_2004

104 Control of Work:

Delete sections 104.01, 104.02, 104.04 and 104.06.

104.03_nat_05_11_2004

104.03 Specifications and Drawings.

Add the following:

(c) As-Built-Plans. Furnish one set of as built plans. The Government will provide one set of contract plans to be used exclusively for recording the as-built details of the project. Use red pencil or red ink to record the information on the as-built plans.

Note all additions or revisions to the location, character, and dimensions of the prescribed work shown on the contract plans. Line out all details shown that are not applicable to the completed work. Check off details shown that were incorporated into the completed work without change.

Retain the plans at the project site and, as work progresses, continually update them to reflect the as-built details. Upon request, make the plans available to the CO to review for compliance with these specifications.

Show the following types of changes on the as-built plans:

(1) Typical section(s)

(a) Revisions in dimensions

(b) Revisions in materials

(2) Plan and profile

Revisions to the alignment

Changes in the construction limits

Revisions in location, type, and grade of road approaches

Location and type of utilities

Location, size, and type of underdrains

Skew of culverts

Channel changes

Location of monuments and permanent references

Elevations for all aerial and underground crossings of utilities

Location, length, and type of fencing

Revisions to grades, elevations, and stationing of intersection PIs

Equations

Culvert diameter, length, type, and stationing. On culvert extensions, indicate the length of the existing pipe and the length of the extension.

Location, length, stationing, and type of retaining walls

Location, length, stationing, and end treatment of guardrail

(3) Bridge

(a) Stationing of bridge ends

(b) Revisions to footing and seal elevations

(c) Pile length, size, type, and tip elevation

(d) Any changes in plan or dimensions including any major changes in reinforcing

(4) Miscellaneous

(a) Revisions to parking areas or turnouts

(b) Final location, type and length of curbs, sidewalks, etc.

Furnish the as-built working plans to the CO before the final inspection. Correct all details found during the final inspection that are not shown on the as-built plans and return to the CO within 5 days.

104.05_nat_05_17_2004

104.06 Load Restrictions.

Add the following:

The Contractor is authorized to use roads under the jurisdiction of the Forest Service for all activities necessary to complete this contract, subject to the limitations and authorizations designated in the Road Order(s) or described in the contract, when such use will not damage the roads or national forest resources, and when traffic can be accommodated safely.

105 - Control of Material

105.02_nat_05_11_2004

105.02 Material Sources

Add the following before the first paragraph.

Sources have been designated for this project as follows:

Rawhide Creek 250-67.2

Riprap Source – Government Source. The designated source for riprap is the pit located approximately 1 mile south of the site on the east side of Road 250 in Section 22, T. 41

N., R. 11 E.

The Contractor may be required to sort material to achieve the designated gradation.

Base Aggregate Source- Commercial Source. Import base aggregate for this project from a commercial source.

Coarse Granular Backfill- Commercial Source. Import Coarse Granular Backfill aggregate for this project from a commercial source.

Waste Site – Government Furnished. A Waste site for excess and unsuitable material will be designated by the CO at the project or within the 1 mile of the project.

Unclassified Borrow- Government Furnished. The designated source for borrow for the detour road embankment is the pit located approximately 1 mile south of the site on the east side of Road 250 in Section 22, T. 41 N., R. 11 E.

Under (b) Contractor-located sources add the following:

Prior to any pit development or use of materials, the pit site shall be approved by the CO that the pit site is free of noxious weed as listed on the "All States Noxious Weeds List”.

106 - Acceptance of Work

106.07_nat_us_05_11_2004

106.07 Delete

Delete subsection 106.07.

107 - Legal Relations and Responsibility to the Public

107.02 Protection and Restoration of Property and Landscape.

Add the following:

Do not work within the wetted perimeter of streams before July 1 st or after August 15 th

During the in-stream work window the Contractor will be allowed to cross the stream with equipment a maximum of four (4) crossings.

107.05_nat_us_05_11_2004

107.05 Responsibility for Damage Claims.

Delete the entire subsection.

107.06_nat_us_04_27_2005

107.06 Contractor’s Responsibility for Work.

Delete the following:

“except as provided in Subsection 106.07”.

107.09_nat_us_05_11_2004

107.09 Legal Relationship of the Parties.

Delete the entire subsection:

107.10_nat_us_02_23_2005

107.10 Environmental Protection.

Add the following:

Design and locate equipment repair shops, stationary refueling sites, or other facilities to minimize the potential and impacts of hazardous material spills on Government land.

Immediately notify the CO of all hazardous material spills. Provide a written narrative report form no later than 24 hours after the initial report and include the following:

Description of the item spilled (including identity, quantity, manifest number, and other identifying information).

Whether amount spilled is EPA or state reportable, and if so whether it was reported, and to whom.

Exact time and location of spill including a description of the area involved.

Containment procedures.

Summary of any communications contractor had with news media, Federal, state and local regulatory agencies and officials, or Forest Service officials.

Description of clean-up procedures employed or to be employed at the site including final disposition and disposal location of spill residue.

When available provide copies of all spill related clean up and closure documentation and correspondence from regulatory agencies.

The Contractor is solely responsible for all spills or leaks that occur during the performance of this contract. Clean up spills or leaks to the satisfaction of the CO and in a manner that complies with Federal, state, and local laws and regulations.

108 - Prosecution and Progress

108.00_nat_05_11_2004

108 Delete.

Delete Section 108 in its entirety.

109 - Measurement and Payment

109.02_nat_05_11_2004

109.02 Measurement Terms and Definitions.

Add the following definition:

(p) Thousand Board Feet (Mbf). 1,000 board feet based on nominal widths, thickness, and extreme usable length of each piece of lumber or timber actually incorporated in the job. For glued laminated timber, 1,000 board feet based on actual width, thickness, and length of each piece actually incorporated in the job.

109.03_nat_05_11_2004

109 Deletions

Delete the following entire subsections:

109.06 Pricing of Adjustments.

109.07 Eliminated Work.

109.08 Progress Payments.

109.09 Final Payment.

Add the following Subsection:

109.10 Methods of Measurement

One of the following methods of measurement for determining final payment is DESIGNATED

IN 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 DESIGNATED IN THE SCHEDULE OF ITEMS may be authorized under any of the following conditions:

(1) Changes in the work authorized by the CO.

(2) A determination by the CO that errors exist in the original design that cause a

PAY ITEM quantity to change by 15 percent or more.

(3) A written request submitted to the CO showing evidence of errors in the original design that cause the quantity of a PAY ITEM 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 in error.

(b) Stake 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.

151 - Mobilization

151.01_0105_us_02_23_2005

151.01 Description

Add the following at the end of the last sentence:

“Work also includes cleaning of all equipment used at the project site. Clean all construction equipment prior to entry on the project site. Remove all dirt, plant parts and material that may carry noxious weed seeds into the area. Construction equipment includes all construction heavy equipment, service vehicles, all highway-legal trucks (including dump trucks, cement trucks, water trucks, etc.), and trailers (including lowboys). Unless otherwise agreed, the Contractor shall give the Forest Service at least 24 hours notice when equipment is ready for inspection.

Only construction equipment inspected by the Forest Service will be allowed to operate within the project area. Treat subsequent move-ins of equipment the same as the initial move-in. Clean truck beds and dump boxes hauling to the project site prior to entering the work area.”

Section 154 - Contractor Sampling and Testing

Description

154.01 Delete this subsection and replace with the following:

This work consists of obtaining samples for testing, testing and reporting required test results. It does not include Contractor quality control testing required under Section 153.

However, include the work required under this Section in the Section 153 quality control plan.

Construction Requirements

154.03 Testing. Delete this subsection and replace with the following:

Perform all tests required by the Sampling and Testing Requirement tables at the end of the following sections:

SECTION 204 – Excavation and Embankment

For all roadway embankment

SECTION 208 – Structure Excavation and Backfill for Selected Major

Structures

For all structural backfill

SECTION 404 – Minor Hot Asphalt Concrete

For all paving

SECTION 553 – Prestressed Concrete

For prestressed concrete beams

SECTION 553A – Precast Concrete Structures

For all precast elements

Measurement

154.06 Delete this subsection and replace with the following:

Do not measure Contractor Sampling and Testing for Payment

Payment

154.07 Delete this subsection and replace with the following:

Do not measure Contractor Sampling and Testing for Payment

155 - Schedules for Construction Contracts

Delete Section 155 in its entirety.

156 - Public Traffic

156.03_nat_11_05_2004

156.03 Accommodating Traffic During Work.

Delete the first paragraph and replace with the following:

Accommodate traffic according to the requirements set forth below, MUTCD, and Section

635. Submit a traffic control plan for acceptance at least 30 days before intended use.

Delete the following from the last paragraph:

…..according to Subsection 106.07(b)

The contractor must maintain through traffic on Road No. 250 during construction.

Upon written request, the contractor will be allowed limited full road closures up to a maximum period of four (4) hours. Requests for road closures must be submitted to the CO at least two weeks prior to the closure.

156.04 Maintaining Roadways During Work.

(a) Add the following:

Construct and remove a Detour Road as specified in the project drawings, and in Section 680 of the Special Project Specifications, to allow public traffic to be maintained around the site for the duration of construction activities.

156.08 Traffic and Safety Supervisor.

Delete this section in its entirety.

157 - Soil Erosion Control

157.02_01_08_23_2004

157.02 Materials

Provide bales, wattles, logs and rolls from a certified noxious weed free source.

157.03_0510_11_10_2004

157.03 General

Delete the first two paragraphs and add the following:

"This work includes submitting an Erosion Control Plan detailing permanent and temporary control measures to minimize erosion and sedimentation during and after construction according to the contract specifications, contract permits, Section 107, and this Section. Contract permits amend the requirements of this Section. Do not modify the type, size, or location of any control or practice without approval. Submit the erosion control plan proposal at least 7 days before operations begin to the Contracting Officer for approval.

The erosion control plan reflects special concerns and measures necessary to protect resources and government improvements. The Erosion Control Plan shall, at a minimum:

1. Describe the construction activities and sequence of implementation relating to specific erosion control measures.

2. Describe the location and type of permanent controls to be implemented during construction.

3. Describe the location and type of temporary controls to be implemented during construction.

4. For work in stream channels with flowing water include a detailed dewatering plan.

5. Include procedures and temporary control measures to be implemented to minimize sediment delivery during re-watering of any new culvert with streambed simulation material.

6. For work in stream channels without flowing water describe level of ground and vegetative disturbance and measures to reduce potential sediment delivery.

7. Describe what monitoring will take place.”

Add to the third paragraph:

“Upon completion of construction at the site, all temporary dewatering materials and equipment are to be removed from Government property."

157.04 Controls and Limitations on Work.

Add the following to the second paragraph:

“Temporary erosion control measures will be in place at the end of each days operation if greater than 30 percent chance of rainfall is predicated. Earthwork operations may be temporarily suspended if significant rainfall is forecasted.”

157.09 Diversions.

“Gradually re-water channel to minimize sediment delivery when removing stream diversions.

Do not break diversion structures suddenly. “

Measurement

157.15 Delete this subsection and replace with the following:

“Do not measure soil erosion and pollution control for payment”

157.16 Delete this subsection in its entirety

201 – Clearing and Grubbing

201.06 Disposal. Delete this subsection and substitute the following:

“Dispose of construction slash by either scattering outside the clearing limits without damaging trees, or by placing on embankment slopes to reduce soil erosion. When placing slash on embankment slopes start at the toe of the fill and place as flat as practicable on the completed slope.”

Measurement

201.08 Delete this subsection and replace with the following:

“Do not measure clearing and grubbing for payment”

203 - Removal of Structures and Obstructions

203.01_nat_05_12_2004

203.01 Work.

Delete and replace with the following:

This work consists of disposing of clearing slash, salvaging, removing and disposing of buildings, fences, structures, pavements, culverts, utilities, curbs, sidewalks, and other obstructions. This work also includes excavation of existing roadway fill and stream channel material to the limits shown in the project drawings.

203.05 Disposing of Material.

(a) Remove from project Add the following:

All materials designated for removal become the property of the Contractor and are to be disposed of by removing off of Forest Service Lands in accordance with all local, state and federal requirements.

(b) Burn. Delete this subsection

(c) Bury. Delete this subsection

(f) Placing Slash on Embankment Slopes. Place construction slash on completed embankment slopes to reduce soil erosion. Place construction slash as flat as practicable on the completed slope. Do not place slash closer than 2 feet below subgrade. Priority for use of available slash is for: (1) through fills; (2) insides of curves; and (3) ditch relief

204 - Excavation and Embankment

Description

204.11 Compaction.

Delete this subsection and substitute the following:

Determine the optimum moisture content and maximum density according to AASHTO T 99, method C. Adjust the moisture content to a level suitable for compaction.

Compact materials placed in all layers to at least 95 percent of the maximum density. The

Contractor will be responsible to determine the in place density and moisture content according to

AASHTO T 310 or other approved test procedures, in accordance with Table 204-1.

Do not apply density requirements as measured by AASHTO T 310 to material that is incapable of being tested or compacted to maximum values determined by AASHTO T 99. For these materials, fill the voids around the rock in each layer with earth or other fine material. Compact each layer, full width, until there is no visible evidence of further consolidation.

204.13 Sloping, Shaping, and Finishing.

Delete section (d) and add the following:

(d) Finishing. For crushed aggregate surfaced roads, remove all material larger than 6 inches from the top 6 inches of the roadbed. For all roads, finish the roadbed to be smooth and uniform, and shaped to conform to the typical sections. Remove unsuitable material from the roadbed and replace it with suitable material.

Ensure that the subgrade for both surfaced and unsurfaced roads is visibly moist during shaping and dressing. Bring low sections, holes, cracks, or depressions to grade with suitable material.

Maintain proper ditch drainage.

204.14_nat_05_12_2004

204.14 Disposal of Unsuitable or Excess Material.

Delete the text of the first paragraph and substitute the following:

Dispose of unsuitable or excess material at designated sites. Place unsuitable or excess material in low spots/ holes at the waste site and shape material to a uniform surface and slope to drain.

204.16 (e) Waste. Delete this paragraph

208 - Structure Excavation and Backfill for Selected Major Structures

208.01 Delete this subsection and replace with the following

This work consists of excavating material for the construction of the culvert and for new channels. This work includes preserving channels, shoring and bracing, constructing cofferdams, sealing foundations, dewatering, excavating, hauling and spreading excess excavated material, preparing foundations, backfilling, constructing the road subgrade and subsequent removal of safety features and cofferdams.

208.11 Compacting. Delete this subsection and replace with the following

Delete this subsection and substitute the following:

Determine the optimum moisture content and maximum density according to AASHTO T 99, method C. Adjust the moisture content to a level suitable for compaction.

Compact materials placed in all layers to at least 95 percent of the maximum density. The

Contractor will be responsible to determine the in place density and moisture content according to

AASHTO T 310 or other approved test procedures, in accordance with Table 204-1.

Do not apply density requirements as measured by AASHTO T 310 to material that is incapable of being tested or compacted to maximum values determined by AASHTO T 99. For these materials, fill the voids around the rock in each layer with earth or other fine material. Compact each layer, full width, until there is no visible evidence of further consolidation.

272 - Geocell Abutment Stabilization

272.01_01_08_27_2004

272.01 This work consists of constructing geocell abutment stabilization at each abutment using a cellular confinement system such as Presto Geoweb Cellular Confinement System or Webtec

TerraCell in accordance with the plans and manufacturers recommendations.

Materials

272.02 Requirements. Ensure that material conforms to specifications in the following subsections:

Granular Backfill Type (a) 703.03

Geotextile, Type II (A, B, C) 714.01

Geocell 736

272.03 General. Perform the work specified in Section 208 or 209. Use ditches, grading or similar methods to prevent surface runoff that may occur during inclement weather from ponding in the foundation excavation.

272.04 Storage and Handling of Material. During shipment and storage, wrap geotextile materials in heavy-duty protective covering. Protect the material from mud, soil, dust, debris and sunlight prior to installation.

272.05 Geotextile Installation. Place the geotextile according to Section 207. Ensure that the surface upon which the geotextile is to be placed is uniform and is reasonably smooth and free of obstructions, depressions, and debris that could damage the geotextile. Have the surface approved by the CO prior to placing geotextile.

Lay the geotextile without tension, stress, wrinkles or creases. Sew or overlap adjacent strips a minimum of 12” at joints. Insert securing pins through both strips of overlapped geotextile at minimum intervals of 3 feet, but no closer than 2 inches to each edge, to prevent the geotextile from being displaced.

Have the installed geotextile approved by the CO prior to setting the geocells.

272.06 Geocell Installation. Furnish the CO with product literature and certification as required in Section 106.03 for review and approval prior to installation. When requested by the CO, furnish a sample of the geocell from each lot for verification testing.

Place the geocell sections directly on the prepared subgrade. Expand the geocell sections into position at the grades and lines as shown on the plans. Hold the expanded geocell sections with suitable “stretcher frames”, steel stakes driven inside selected outer cell walls, or other similar methods as allowed by the manufacturer prior to filling. Ensure that the individual cells have expanded to the minimum dimensions required by the manufacturer. If necessary field cut sections as per the manufacturer’s recommendations to the lines shown on the plans.

Connect geocell panels in accordance with the manufacturer’s recommendations.

272.07 Infill Placement. Furnish the CO with the manufacturer’s specific recommendations for backfilling 2 weeks prior to placement of the geocells.

Place coarse granular backfill meeting Subsection 703.03 into the expanded cells with equipment appropriate for the site conditions such as a backhoe or a front-end loader. Do not drop infill material more than 3 feet to avoid damage or displacement of the cell walls.

Overfill the geocell cells and level to a minimum of 2 inches above the top of the cell walls. A front-end loader may be used to place the infill provided that it only traffics above geocell sections that have been filled and covered with the minimum 2 inches of additional material.

Compact the infill material with a vibratory plate compacter. Operate compaction equipment over the full width of the geocell until visible deformation of the infill ceases. Make at least three complete passes. Grade the surface to be ½ inch above the top of the cells. Ensure that the cell walls are not exposed after fine grading is completed.

Use the geocell manufacturer’s specific recommendations for backfilling if they are more stringent than stated above.

272.08 Acceptance. Geotextile will be evaluated under Subsections 106.02 and 106.03 and

714.01.

Material for geocell will be evaluated under Subsections 106.2 and 106.03.

Granular backfill material will be evaluated under Section 106.02 and 106.04.

272.08 Method. Measure the items listed in the bid schedule according to Subsection 109.02 and the following.

Measure geocell by the square yard in place, exclusive of wastage.

272.09 Basis. The accepted quantities will be paid for at the contract price per unit of measurement for the Section 272 pay items listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05.

The cost for furnishing and placing the granular backfill required for geocell infill is incidental to this pay item and no separate payment will be made.

The cost for furnishing and placing geotextile for the geocell installation is incidental to this pay item and no separate payment will be made.

301 - Untreated Aggregate Courses

301.06_nat_05_12_2004

301.06 Surface Tolerance.

Add the following:

Thickness and Width requirements:

Ensure that the thickness and width of the compacted aggregate conform to the dimensions

SHOWN ON THE DRAWINGS, and that measurements on the compacted aggregate meet the following criteria:

(a) The maximum variation from the compacted specified thickness is ½ inch.

(b) The compacted thickness is not consistently above or below the specified thickness and the average thickness of 4 random measurements for any ½ mile of road segment is within + ¼ inch of the specified thickness.

(c) The maximum variation from the specified width will not exceed +12 inches at any point.

(d) The compacted width is not consistently above the specified width and the average of any four random measurements along any ½ mile of road segment is within +4 inches of the specified width.

553 – Prestressed Concrete

553.03 Method Approval. Add the following:

Precast prestressed concrete members must be manufactured by a plant certified by the

Prestressed Concrete Institute (PCI). Submit a copy of the transmittal letter of the latest PCI inspection with the shop drawings.

553A – Precast Concrete Structures

553A.01 Work. Construct precast concrete members. In addition, manufacture, test materials for, transport, store, and install all precast concrete portions except piling, and perform all necessary grouting, welding, or other connections. Furnish precast concrete members complete and in place, including all concrete reinforcing steel and incidentals connected therewith.

Materials

553A.02 Requirements. Provide materials that meet the requirements specified in the following subsections:

Elastomeric Bearing Pads …………………………………….. 717.10

High-Strength Nonshrink Grout ……………………………… 725.40

Low-Strength Grout …………………………………………... 725.22(f)

Mortar ………………………………………………………… 725.40

Reinforcing Steel ……………………………………………… 709.01

Sealants, Fillers, Seals, & Sleeves …………………………….. 712.01

Structural Concrete ……………………………………………. 552

Structural Steel ………………………………………………… 717.01

Provide precast concrete members of the size, shape, strength, air content, and finish that are

SHOWN ON THE DRAWINGS. Precast concrete members must be manufactured by a plant certified by the Prestressed Concrete Institute (PCI). Submit a copy of the transmittal letter of the latest PCI inspection with the shop drawings.

Perform all sampling, testing, and inspection necessary to ensure quality control of the component materials and the concrete. Sample and test for quality control and acceptance testing in accordance with the AASHTO or ASTM test methods prescribed in Section 552.

Maintain adequate records of all inspections and tests. Keep records that indicate the nature and number of observations made, the number and type of deficiencies found, the quantities approved and rejected, and the nature of any corrective action taken.

Sample and test every batch (100 percent sampling and testing) for air content and slump at the start of concrete production. Random sampling and testing for air content and slump at the rate of one for every five successive batches may be substituted for 100 percent sampling and testing if the test results for three successive batches are within the specification limitations for air content or slump; but reinstate 100 percent sampling and testing if a test result for any random sample is outside the specification limitations for either air content or slump.

Make compression tests to determine the minimum strength requirements on cylinders. Make a minimum of four cylinders from each day’s production, and cure them in the same manner as the precast units. Use testing methods in accordance with AASHTO T 22.

Furnish, or have the supplier furnish, a Certificate of Compliance to the CO Certifying that the above materials comply with the applicable specifications. In addition, furnish to the CO a copy of all test results performed by the Contractor or supplier that are necessary to ensure compliance.

Construction

553A.03 Performance. Construct precast concrete structural members in accordance with the following sections and subsections, as applicable:

Erecting and Placement of Multibeam Members ………………...553.08

Reinforcing Steel ………………………………………………... 554

Storing, Transporting, & Erecting ………………………………. 553.08

Structural Concrete ……………………………………………… 552

Submit four sets of shop drawings to the CO for approval, including the concrete mix design for each class of concrete proposed for use, a minimum of 21 days before fabrication of the precast member(s).

553A.04 Casting Yard. The precasting of concrete structural members may only be done at a casting yard of a PCI Certified plant.

553A.05 Handling, Transporting, & Erecting. Provide additional reinforcement, as needed, to meet the requirements of handling, transporting, and erecting precast members.

553A.06 Acceptance. Reinforcing steel, anchor devices, elastomeric bearings, and material for concrete and grout will be evaluated under Subsection 106.03. Furnish production certifications for hydraulic cement, and reinforcing steel.

Concrete for precast concrete members will be evaluated under Subsections 106.02, 106.03, and

106.04.

Construction of precast concrete members will be evaluated under Subsections 106.02 and 106.04.

Reinforcing steel will be evaluated under Section 554.

Falsework and forms will be evaluated under Section 562.

Measurement

553A.07 Measure the Section 553A items listed in the bid schedule according to Subsection

109.02 and the following as applicable.

Do not measure reinforcing steel, concrete, anchorages, plates, nuts, and other material contained within or attached to the unit for precast concrete structural members.

553A.08 The accepted quantities will be paid at the contract price per unit of measurement for the

Section 553A pay items listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05.

622 - Rental Equipment

622.02_01_08_20_2004

622.02 Rental Equipment

Delete the first two sentences of the first paragraph and add the following:

Hydraulic Excavator. Provide a track mounted hydraulic excavator in acceptable operating condition as determined by the CO. Bucket must be equipped with an hydraulic "thumb". It is anticipated that an excavator of a size capable of performing the excavation needs for the project, i.e. structure excavation, riprap construction, etc., will be of an adequate size to be acceptable for any work that the Contractor may be directed to perform under this section.

Large Dump Truck. Provide a large dump truck with a minimum capacity of 12 cubic yards in acceptable operating condition as determined by the CO.

622.04 Add the following:

The Government reserves the right to reduce or eliminate entirely the work under this item with no adjustment in contract unit price.

625 – Turf Establishment

625.07 Seeding.

Add the following:

The application of seed and fertilizer to cut & fill slopes shall be within fourteen (14) days after the road has been constructed to final grade, unless otherwise agreed by the CO. Cut & Fill slopes damaged by construction activities such as surface blading or additional excavation shall be reseeded within ten (10) days of the damage.

Application Methods for Seed and Fertilizer:

Apply seed by the Dry Method.

The Government will furnish the seed mix to the Contractor for use at the project site.

625.08 Mulching

Delete the entire subsection and replace with the following:

Apply Mulch within 24 hours after seeding by the following methods.

(a) Dry Method. Apply mulch by hand or with a mechanical spreader at a rate of 1000 pounds per acre. Mulch areas inaccessible to mulching equipment by hand. Apply mulch uniformly over the entire disturbed area.

648 - Stream Simulation

648.00_nat_05_13_2004

648.01 This work consists of placing rock and fill to simulate natural stream profile and streambed though culverts and other structures, and constructing rock weir/step pools and rock baffles.

Material

648.02 Conform to the following Subsections.

Foundation Fill 704.01

Stream Bed Simulation Rock 705.08

Fish Rest Stop Rock 705.07

648.03 General. Place stream simulation rock on a prepared surface to form a well-graded, low permeability mass, similar in appearance and texture to the natural streambed. Do not drive metal track or rubber tired equipment directly on metal or concrete structure surfaces.

648.04 Placed Stream Bed Simulation Rock and Fish Rest Stops.

(a) Method A, Machine Placed. Place stream simulation rock in one or more layers with a layer depth less than 1 ½ times the maximum dimension of the stream simulation rock. Place stream simulation bedrock by methods that do not cause segregation or damage to the prepared surface. Place or rearrange individual rocks by mechanical methods to obtain a compact low permeability mass matching stream simulation bed details. Fill voids before placing the next lift.

Place fish rest stop rock as designated.

(b) Method B, End Dumped. Dump stream simulation rock in one or more layers with a layer depth less than 1 ½ times the maximum dimension of the stream simulation rock. Distribute larger rocks throughout the mass of stone. Obtain a uniformly dense, compact, low permeability bed with a surface matching stream simulation bed details. Fill voids before placing the next lift.

Place fish rest stop rock as designated.

(c) Method C, Hand Placed. Place stream simulation rock using hand labor. Material may be hand carried, or carried in wheelbarrows and end dumped to obtain its full thickness. Place material to obtain a uniformly dense, compact, low permeability bed with a surface matching stream simulation bed details. Fill voids before placing the next lift. Place fish rest stop rock as designated.

648.04 Foundation fill. Fill all voids left during placement of Fish Rest Stops and Stream Bed

Simulation Rock adjacent to footings, concrete structures or corrugated pipes with foundation fill. Use water pressure, metal tamping rods, and similar hand operated equipment to force material into all surface and subsurface voids between the structure and Rocks and between individual Rocks.

648.05 Rock Weirs/ Step Pools. Furnish rocks meeting the dimensional requirements SHOWN

ON THE DRAWINGS and as directed by the CO. If suitable rocks are not available on site they must be hauled from the designated riprap source. Excavate and construct the rock vortex weirs as SHOWN ON THE DRAWINGS and as directed by the CO.

648.06 Rock Baffles. Furnish rocks meeting the dimensional requirements SHOWN ON THE

DRAWINGS and as directed by the CO. If suitable rocks are not available on site they must be hauled from the designated riprap source. Excavate and construct the rock vortex weirs as

SHOWN ON THE DRAWINGS and as directed by the CO.

648.07 Acceptance. Placing stream simulation material will be evaluated under Subsections

106.02 and 106.04.

648.08 Measure the items listed in the bid schedule according to Subsection 109.02.

648.09 The accepted quantities, measured as provided in Subsection 109.02, will be paid at the contract unit price per unit of measurement for Section 638 pay items listed in the bid schedule.

Payment will be full compensation for the work prescribed in this Section. See Subsection

109.05

680 – Detour Road

Description

680.01 This work consists of constructing, maintaining, and removing the detour roadway as shown on the plans.

This work includes clearing and grubbing, removing and replacing topsoil, excavating, furnishing and placing culverts, placing embankment, grading and temporary surfacing. It also includes removing all items and reshaping slopes when the detour is no longer needed, seeding and mulching disturbed areas, as well as any incidental work necessary to complete and remove the detour roadway.

Material

680.02 Conform to the following Subsections:

Excavation and Embankment 204

Roadway Aggregate 301

Construction Requirements

680.03 Construct the detour road alignments to the lines and grades as shown on the plans.

Remove the detour roadway and all roadway materials from the project upon completion of the permanent bridge. Materials may be incorporated into the permanent roadway if approved by the

COTR. Reshape the ground under the detour lines to their present contours and replace conserved topsoil.

Furnish and install temporary traffic control devices per Section 635 of the specifications, and in accordance with the Contractor’s Traffic Control Plan.

680.04 Acceptance. Detour roadway will be evaluated under Subsection 106.02 and 106.04.

Measurement

680.05 Measure temporary traffic control devices under Section 635.

Excavation, embankment, and surfacing for the detour road will not be measured.

Payment

680.06 Construction, maintenance, and subsequent removal of the detour road will be paid at the contract price per unit of measurement for the Section 680 pay items listed in the bid schedule.

Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05.

Payment for lump sum items will be prorated based on the total work completed.

713 - Roadside Improvement Material

713.05_nat_05_13_2004

713.05 Mulch.

Assure that mulch used on the project is certified noxious weed free by the appropriate authority in the jurisdiction of use.

725 - Miscellaneous Material

Add the following section:

725.30 Fiber Reinforced Pads. Furnish pads made from new un-vulcanized rubber and synthetic fibers. Each component must make up 50 % of the pads weight.

The pad must have:

1. A standard rubber hardness of 80 plus or minus 5 Shore A durometer.

2. An ultimate compressive breakdown strength of at least 7,000 psi.

3. A minimum pad thickness of 1/16-inch and a maximum pad thickness of 1/8-inch.

725.40_01_08_27_2004

Add the following section:

725.40 High-Strength Nonshrink Grout

Furnish grout that is packaged and ready for use with the addition of water at the construction site. Ensure that each bag is stamped to show the last date on which it may be used. Use grout that consists of a hydraulic cementitious system, graded and processed natural fine aggregate, and additional technical components such that the product meets the following conditions:

(a) Free of inorganic accelerators, including chlorides.

(b) Free of oxidizing catalysts.

(c) Free of gas-producing agents.

(d) When mixed to 130 percent flow on flow table (ASTM C 230 at 10 drops), it does not reduce in linear dimension when tested in accordance with ASTM C157.

Take measurements at 72 hours and 7 days.

(e) Produces no bleeding for the first 2 hours after mixing when mixed to 130 percent flow on flow table (ASTM C 230 at 10 drops), as tested in accordance with

ASTM C232.

(f) Has a minimum strength as follows when tested in accordance with ASTM C 109:

(1) After 72 hours, 25 MPa (3500 psi).

(2) At 7 days, 40 MPa (6000 psi).

(3) After 28 days, 50 MPa (7200 psi).

Provide performance characteristics at 115 to 120 percent flow on flow table

(ASTM C 230 at 10 drops).

(g) It must be designed, as stated by the manufacturer, to be mixed, placed, and cured at atmospheric temperatures of 5 O C to 30

O C (40

O F to 85

O F). Submit products proposed for use for approval by the CO and accompany them with manufacturer’s submittals substantiating all requirements in this subsection, including graphs or charts showing the time, temperature, and humidity requirements for curing to achieve the specified grout strengths; and recommendations for storage, mixing, application, and curing procedures.

As specified as grout on the contract plans, the following products meet the above requirements.

1. MASTERFLOW 928 GROUT, manufactured by Chemrex.

2. CRYSTEX GROUT, manufactured by L&M Construction Chemicals, Inc.

3. CEMENT ALL, manufactured by CTS Cement Manufacturing Co.

4. SURE-GRIP HIGH PERFORMANCE GROUT manufactured by Dayton Superior.

725.41 Mortar

Furnish mortar that is packaged and ready for use with the addition of water at the construction site. Ensure that each bag is stamped to show the latest date on which it may be used. Use mortar that consists of a cementitious system made up of:

(a) Natural aggregate, 3/8” maximum size, that meets the requirements specified in

ASTM C 33 except for grading. Accomplish grading by blending sieve sizes to obtain the optimum density.

(b) Metallic aggregate free from nonferrous material, soluble alkaline compounds, and visible rust.

(c) Water reducers, workability agents, air-entraining agents, and catalysts.

Blend the materials to minimize bleeding, increase workability, resist exposure to freeze-thaw cycles and deicing salts, and prevent shrinkage within and at the perimeter of the patch, keyway, or other area to be filled.

Ensure that the minimum compressive strength of the mortar, as tested by ASTM C 109 for a 3” slump, is:

24-hour...........................................................................................35MPa (5000 psi)

7-day...............................................................................................60 MPa (8500 psi)

28-day.............................................................................................70 MPa (10,000 psi)

Ensure that the durability of the products when tested at 300 cycles, ASTM C 666, procedure A is:

Submerged in: DF (%)

Water 98

5% CaCl2 solution 95

5% NaCL solution 85

Ensure that the scaling resistance has a rating of 3, Moderate Scaling, after 50 cycles when tested in accordance with ASTM C 672.

Provide certification from the manufacturer that the product is compatible for work that is 1” or more in depth and more than 1” in width; and where the mixing, placing, and curing temperatures may range from 5 O C to 30

O C (40

O F to 85

O F).

Submit products proposed for use to the CO for approval, and accompany them with the manufacturer’s submittals substantiating all requirements in this section, including (1) graphs or charts showing the time, temperature, humidity, and curing requirements to achieve mortar strengths equal to the adjacent concrete; and (2) complete recommendations for storage, mixing, application, and curing procedures.

As specified as mortar on the contract plans, the following products meet the above requirements.

1. EMACO T425 or T430, manufactured by Chemrex.

2. RAPID SET DOT REPAIR MIX manufactured by CTS Cement Manufacturing Co.

3. SURE-GRIP HIGH PERFORMANCE GROUT (when extended with pea gravel) manufactured by Dayton Superior.