J-6_UpperShieldsBridge_Specs.pdf

FOREST SERVICE

SUPPLEMENTAL SPECIFICATIONS

For

UPPER SHIELDS RIVER

CULVERT REPLACEMENT

ROAD NO. 844 MP 28.52

DJ&A, P.C.

Engineers - Planners - Surveyors

3203 So. Russell St

Missoula, MT 59801

U.S.D.A. FOREST SERVICE

CUSTER GALLATIN NATIONAL FOREST

June 2015

Table of Contents

Table of Contents

Preface

101 - Terms, Format, and Definitions

102 - Bid, Award, and Execution of Contract

103 - Scope of Work

104 - Control of Work

105 - Control of Material

106 - Acceptance of Work

107 - Legal Relations and Responsibility to the Public

108 - Prosecution and Progress

109 - Measurement and Payment

151 - Mobilization

152 – Construction Survey and Staking

153 – Contractor Quality Control

155 - Schedules for Construction Contracts

156 - Public Traffic

157 - Soil Erosion Control

201 – Clearing and Grubbing

203 - Removal of Structures and Obstructions

208 - Structure Excavation and Backfill for Selected Major Structures

251 - Riprap

272 - Geocell Abutment Stabilization

308 - Minor Crushed Aggregate

553A – Precast Concrete Structures

571 – Government Furnished Bridge Superstructure

622 - Rental Equipment

625 – Turf Establishment

703 - Aggregate

736 - Geocell

Preface

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 Meaning of Terms

Delete all references to the TAR (Transportation Acquisition Regulations) in the specifications.

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 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.

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.

102 - Bid, Award, and Execution of Contract

102 Bid, Award, and Execution of Contract

Delete Section 102 in its entirety.

103 - Scope of Work

Deletions

Delete all but subsection 103.01 Intent of Contract.

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

This project is for the removal of an existing corrugated steel pipe on the Shields River with a

Government-owned, salvaged timber bridge. This project is located in the Custer Gallatin

National Forest on National Forest System Road No. 844 at Mile Post 28.52 in the Yellowstone

Ranger District in Section 16, T. 5 N., R. 11 E., Park County, Montana.

The work includes but is not limited to clearing and grubbing, erosion control measures, structure excavation, roadway embankment, removing and disposing an existing culvert, compaction, riprap, roadway surfacing, transporting and installing a government-owned timber bridge, furnishing and installing precast concrete foundations, and all other incidental items necessary to complete the project in accordance with the plans and specifications.

104 - Control of Work

Deletions

Delete Sections 104.01, 104.02, and 104.04.

Add the following subsection:

104.06 Use of Roads by Contractor

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 Material Sources

Add the following before the first paragraph.

Sources have been designated for this project as follows:

Riprap Source – Government Furnished – The Government source for Riprap for this project is the Sunlight Pit located on Road 6630 in Section 26, T5N, R10E.

Crushed Aggregate Source- Government Furnished. The Government source for

Crushed Aggregate for this project is the Sunlight Pit described above.

Coarse Granular Backfill – Contractor Furnished – There is no available Government source for Coarse Granular Backfill for construction of the geocell abutment stabilization.

Waste Site – Government Furnished – A waste site for excess and unsuitable material is the Sunlight Pit as described above. This site is to be used for the disposal of unsuitable or excess excavated material only. All other materials designated for removal and disposal must be disposed of away from Forest Land as per FSSS Section 203.

Materials Stockpile Site- Government Furnished – The existing timber bridge superstructure to be transported to the site and installed is located at the Sunlight Pit described above.

Add the following to section (b) Contractor-located sources.

Prior to any pit development or use of materials, the Contractor shall provide to the CO a

State certification that the pit site is free of noxious weed as listed on the "All States

Noxious Weeds List”.

106 - Acceptance of Work

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:

Work within the wetted perimeter of streams will be allowed only as specified in the approved project permits.

107.05 Responsibility for Damage Claims.

Delete the entire subsection.

107.06 Contractor’s Responsibility for Work.

Delete the following from the first paragraph.

“except as provided in Subsection 106.07”.

107.09 Legal Relationship of the Parties.

Delete the entire subsection.

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.

Before beginning any work, submit a Hazardous Spill Plan. List actions to be taken in the event of a spill. Incorporate preventive measures to be taken, such as the location of mobile refueling facilities, storage and handling of hazardous materials, and similar information. 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 the 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 Delete.

Delete Section 108 in its entirety.

109 - Measurement and Payment

109 Deletions

Delete the following entire subsections:

109.06 Pricing of Adjustments.

109.07 Eliminated Work.

109.08 Progress Payments.

109.09 Final Payment.

109.02 Measurement Terms and Definitions.

(b) Contract quantity.

Add the following:

Contract quantities will be adjusted only when there are errors in the original design of 15% or more.

Change the following:

“(b) Cubic yard” to “(c) Cubic yard”.

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.

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

(b) Contract Quantities (CQ). As defined in 109.02 (b) and supplemented above.

(c) 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 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), except cars. 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.

152 – Construction Survey and Staking

152.01(a) Personnel.

Add the following:

Conduct all construction staking under the direction of a licensed professional engineer or land surveyor who is closely associated and familiar with construction staking.

153 – Contractor Quality Control

Add the following.

153.07. Project Submittals

At a minimum the contractor shall provide project submittals as shown on the below Submittal

Log. Submittal requirements are listed in the Standard Specifications, Supplemental

Specifications, and Plans.

Submittal Log

Lo g

No.

Incidental to

Pay

Item(s) Description of Submittal

Type of

Submittal

Requirement found in

Specification No.

/Drawings

Additional

Specification

References

1 151 Weed Free Material Source

Certification

Material

Certification FSSS 105.02(b)

2 151 Hazardous Spill Plan Plan FSSS 107.10

3 151 Contractor Quality Control Plan Plan 153.02 552.09

4 151 Traffic Control Plan Plan FSSS 156.03

5 157 Dewatering and Soil Erosion and

Pollution Control Plan Plan FSSS 157.03

6 208 Excavation Plan Plan FSSS 208.04

7 208 Material Moisture/Density Testing Test Results Table 208-1 106

8 208 Structure Backfill Compaction

Testing Test Results 208.11, 208.12 106

9 272 Geocell Abutment Stabilization Material

Certification 272.06

106, FSSS 736,

Drawings

10 272 Geocell: Course Granular Backfill Material

Certification 272.06

106, FSSS 703.03,

Drawings

11 272 Geocell: Geotextile – Type II Material

Certification 272.06

106, 714, Drawings

12 552 Structural Concrete: Mix Design Mix Design 552.03 553, 553A, Drawings

13 552 Structural Concrete: Testing Test Results 552.19 106, Drawings

14 553A Welder Certification Copy of

Certification Sheet 2 of Plans

15 553A Precast Concrete Structures Shop Drawing FSSS 553A.03 104, 552, 553, 16 553A Precast Concrete Structures: Industry

Certification

Fabrication

Certification

FSSS 553A.02

Submittal Log

Lo g

No.

Incidental to

Pay

Item(s) Description of Submittal

Type of

Submittal

Requirement found in

Specification No.

/Drawings

Additional

Specification

References

17 553A Precast Concrete Structures: Testing Test Results FSSS 553A.06 106, 554, 562

18 553A Reinforcing Steel Order List 554.03

553, 553A, 709, Drawings

19 557 Timber Structures: Treatment Treatment

Certification 557.19

106, 716, Drawings

20 571

Government-furnished bridge:

Removal, transportation & erection plan

Plan FSSS 571.02 106, Drawings

155 - Schedules for Construction Contracts

155 Delete.

Delete Section 155 in its entirety.

156 - Public Traffic

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.

Add the following project specific requirements:

The Contractor will be allowed to close Road No. 844 in the immediate vicinity of the project to public traffic during construction for a period of three (3) weeks under this contract. Provide at least 14 days advance written notice to the CO prior to any road closure period, to allow public notice of the closure period by the Forest Service.

Develop a construction sign plan identifying the type and location of all advanced warning signs necessary to safely restrict or pass public traffic. Install construction signs conforming to the

Manual on Uniform Traffic Control Devices (MUTCD) prior to proceeding with any construction work. Furnish, maintain and remove all barricades and signs required for construction signing and trail closures.

Delete the following from the last sentence of the last paragraph:

…according to Subsection 106.07(b)

156.08 Traffic and Safety Supervisor.

Delete this subsection in its entirety.

157 - Soil Erosion Control

157.02 Materials

Add the following:

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

157.03 General.

Delete the first two paragraphs and replace with the following:

Submit a Dewatering and Soil Erosion and Pollution Control Plan detailing permanent and temporary control measures to minimize erosion and sedimentation during and after construction in accordance with the plans and storm water permits. 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 CO for approval.

Reflect in the Dewatering and Soil Erosion and Pollution Control Plan special concerns and measures necessary to protect resources and government improvements. Include:

(a) The construction activities and sequence of implementation relating to specific erosion control measures.

(b) The location and type of permanent controls to be implemented during construction.

(c) The location and type of temporary controls to be implemented during construction.

(d) For work in stream channels with running water a detailed dewatering plan.

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

(f) Description of the monitoring plan.

Add the following to the third paragraph:

Upon completion of construction at the site, remove all temporary erosion control devices, dewatering materials and equipment from Government property.

157.08 Water Crossings.

Add the following:

At any channel crossing where there is running water, dewater by rerouting water flow around the site before and during excavation and embankment operations.

201 – Clearing and Grubbing

Construction Requirements

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.

Merchantable timber is the Government’s property. Limb and deck merchantable timber on site as directed by the CO.

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

203.05 Disposing of Material.

Modify this subsection as follows:

(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 section.

(c) Bury. Delete this section.

Add the following:

(e) Placing Slash on Embankment Slopes. Place construction slash on completed embankment slopes or scatter as directed by the CO to reduce soil erosion. Place construction slash as flat as practicable on the completed slope. Priority for use of available slash is for: (1) through fills; (2) insides of curves; and (3) ditch relief outlets. All slash material not suitable for embankment slopes shall be disposed off Forest Service Lands in accordance with all local, state and federal requirements or as approved by the CO.

208 - Structure Excavation and Backfill for Selected Major Structures

208.02 Add the following:

Backfill material 704.03

208.04 General.

Add the following:

Use all suitable material in the construction of the roadway embankment and for structural backfill. Field drain and dry excessively wet material that is otherwise suitable for embankment before placement. Place and shape unsuitable or excess material at designated sites shown on the drawings or as directed by the CO.

Submit an Excavation Plan for approval prior to beginning the work. As a minimum, the

Excavation Plan must include: drawings and a written outline illustrating and describing the proposed excavation limits, methods, equipment to be used, location of stockpiles, and estimated quantities. The Excavation Plan must comply with all applicable OSHA requirements and list the soil type assumed.

208.10 Backfill.

Delete the first sentence and replace with the following:

Backfill with material meeting the requirements of Subsection 704.03, Backfill Material.

251 - Riprap

251.01 Description

Delete the first sentence and add the following:

This work consists of furnishing, hauling, and placing of riprap for bank protection, slope protection, drainage structures, erosion control, and other features shown on the plans.

Add the following:

251.04a Grade Control Structure.

Furnish riprap in accordance with FSSS 105 and as shown on the drawings. Place or rearrange individual rocks by mechanical methods to obtain a shape as shown on the drawings.

Fill all voids left during placement of grade control structures adjacent to concrete footings or corrugate pipes with excess structural excavation material.

All grade control structure locations must be approved by the CO prior to excavation or placement of rock.

251.07 Acceptance

Delete sampling and testing requirements of Table 251-1.

Delete the fourth sentence and add the following:

Structure excavation and backfill will be evaluated under Section 208.

Delete Table 251-1.

272 - Geocell Abutment Stabilization

Description

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 (c) 703.03

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

Geocell 736

Construction Requirements

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. Have the surface approved by the CO prior to placing geotextile.

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 7 days 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 7 days 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. Make at least three complete passes or until visible deformation of the infill ceases. 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 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.

Measurement

272.09 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.

Payment

272.10 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 in Sections 207, 208, and 209 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.

308 - Minor Crushed Aggregate

Delete section 308 in its entirety and replace with the following:

Description

308.01 This work consists of placing Government furnished aggregate or furnishing and placing crushed aggregate for bedding, backfill and roadway aggregate course.

Material

308.02 Conform to the following Subsections:

Crushed aggregate 703.06

Water 725.01

Construction Requirements

308.03 Preparing Surface. Prepare the roadway surface on which aggregate course is placed as shown on the plans.

308.04 Placing Crushed Aggregate.

(a) Roadway aggregate. Mix the aggregate and adjust the moisture content to obtain a uniform mixture with a moisture content suitable for compaction. Spread and shape the mixture on the prepared surface in a uniform layer.

Do not place the mixture in a layer exceeding 6 inches in compacted thickness. When more than one layer is necessary, compact each layer according to Subsection 308.05(a) before placing the next layer.

(b) Bedding and backfill aggregate. Place and shape the mixture in layers that, when compacted, do not exceed 6 inches in depth.

308.05 Compacting and Finishing Crushed Aggregate.

(a) Roadway aggregate. Compact using the methods below, specified in the Schedule of Items.

(1) Method 1. Operate equipment over the full width of spread aggregate.

(2) Method 2. Compact the aggregate by operating compaction equipment over the total width until visible deformation ceases. A minimum of three complete roller passes shall be made at a moisture content suitable for compaction.

(b) Bedding and backfill aggregate. Compact in 6 inch lifts by using a Forest Service approved mechanical compactor until no visible deformation is observed over the entire area of aggregate.

308.06 Acceptance. Crushed aggregate will be evaluated under Subsections 106.02 and 106.03.

Furnish a production certification including gradation and quality properties for each source.

Construction of roadway aggregate courses will be evaluated under Subsections 106.02 and

106.04. Method 2 compaction will be evaluated under Section 106.04.

Placement of bedding and backfill aggregate will be evaluated under Subsection 106.02 and

Section 209.

Preparation of the surfaces on which crushed aggregate is placed will be evaluated under Section

303 and 209 as applicable.

Measurement

308.07 Measure the Section 308 items listed in the bid schedule according to Subsection 109.02 and the following as applicable.

Measure crushed aggregate by the cubic yard in-place on the road.

Measure width horizontally to include the top of aggregate width including designed widenings.

Measure the length horizontally along the centerline of the roadway.

Payment

308.08 The accepted quantities will be paid at the contract price per unit of measurement for the

Section 308 pay item listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05.

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:

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

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 with any of the following certifications:

Precast / Prestressed Concrete Institute (PCI) o Bridge 1, Precast Bridge Products (no prestressed reinforcing).

o Commercial 1, Precast Concrete Products (no prestressed reinforcing).

National Precast Concrete Association (NPCA) o Precast

American Concrete Pipe Association (ACPA) o QCast

Submit a copy of the transmittal letter of the latest PCI, NPCA, or ACPA inspection/certification with the shop drawings.

In lieu of the above certifications, the Contractor shall retain a professional engineer to provide quality assurance for the work by inspecting and certifying in writing the concrete members are constructed in accordance to the specification and shall include but not limited to:

a) Shop drawing review.

b) Concrete member dimensions.

c) Concrete mix design.

d) Aggregate sources and test results.

e) Steel reinforcing placement.

f) Concrete curing and strength test results.

g) Concrete material certifications.

h) Placement mixing, delivery and sampling.

Certification of the above shall be received by the CO prior to shipment and installation at the job site.

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.

Construction

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

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 be done at either a casting yard of an Industry Certified plant or a casting yard of the Contractor’s choice with the appropriate certifications discussed above.

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.

Payment

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.

571 – Government Furnished Bridge Superstructure

571.01 Work. Transport and install a Government-furnished salvaged bridge superstructure.

Construct the length and width, including curbs, to the horizontal and vertical alignments shown in the drawings. Include all incidental materials required to provide a complete structure ready for use. Specific requirements for materials and construction are shown in the drawings.

Construction Requirements

571.02 General. The Government furnished bridge superstructure is from the Shields River campground site. If the Upper Shields project is contracted in conjunction with the Shields River

Fish Barrier construction contract, the contractor will be responsible for salvaging and transporting it from the Shields River campground site to the Upper Shield site. If the Upper

Shields project is not contracted in conjunction with the Shields River Fish Barrier contract, the

Contractor will be responsible for loading and transporting it from the Sunlight Pit.

Transportation and installation of the bridge superstructure at the new location is included in

Item 57101. Submit a plan for removal (if necessary), transportation and erection of the bridge superstructure to the CO for approval prior to beginning work.

Upon taking possession of the Government-furnished bridge superstructure, either in its current location at the Shields River Campground or stockpiled at the Sunlight Pit, the Contractor is solely liable for any damage resulting from removal (if necessary), handling, transporting and erecting the bridge at the Upper Shields site. Inspect the bridge and document any existing damage prior to taking possession. Submit documentation to the CO.

If the bridge superstructure is not installed immediately upon delivery to the project site, provide appropriate equipment and labor to unload and stack, support, and store all material at the delivery point. Support and stack all components to prevent damage. Furnish and install blocking such that all components are supported at least one foot above the ground.

Measurement

571.03 Measure the Section 571 items listed in the bid schedule according to Subsection 109.02.

Payment

571.04 The accepted quantities will be paid at the contract price per unit of measurement for the

Section 571 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 Rental Equipment

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

Provide equipment of the type listed in the Schedule of Items. Provide equipment of at least the minimum size needed to efficiently perform the work. Submit the model number of the equipment to the CO for approval before delivery to the project site. Equipment shall be no more than 15 years old and shall be reasonably free of leaks and other mechanical deficiencies.

622.04 & 622.05 Measurement and Payment.

Add the following:

Adjustment of contract prices as described in FAR 52.211-18 Variation in Estimated Quantities shall not apply to Section 622. The government reserves the right to reduce or eliminate entirely the work under this item with no adjustment in the contract unit price.

625 – Turf Establishment

625.04 Preparing Seedbed.

Delete entire subsection.

625.05 Watering

Delete entire subsection.

625.06 Fertilizing.

Delete entire section and replace with the following:

Apply fertilizer having a chemical analysis as listed below by the following method.

(a) Dry Method. Apply the fertilizer with approved power driven seeders, drills, fertilizer spreaders or other mechanical equipment. Hand operated methods are satisfactory on areas inaccessible to mechanical equipment.

Fertilizer. The fertilizer shall be a slow release organic fertilizer applied at the manufacturer’s recommended rate with an N-P-K formulation of:

Nutrient Percent

Nitrogen, N . . . . . . . . . . . . . 6-8 %

Phosphorus, P205 . . . . . . . . . 2-4 %

Potassium, K . . . . . . . . . . . . . 3-4 %

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 at an application rate of 30 lbs. per acre. The seed mix will be furnished by the Forest Service.

625.08 Mulching.

Delete the entire subsection and replace with the following:

Apply Mulch within 24 hours after seeding. Mulch material shall be weed free straw and shall be applied at a uniform rate to adequately cover the seed. The weed free straw shall be from a grain crop such as barley straw, wheat straw or oat straw.

Mulch will be applied in a one-step operation with the seed at the rate of 1 Ton per Acre.

703 - Aggregate

703.03 Granular Backfill.

Add the following:

(c) Coarse Granular Backfill. Furnish backfill material that consists of clean, hard durable particles or fragments of crushed stone, crushed slag or crushed gravel meeting the gradation shown below.

Sieve Size Percent

Passing

1 inch 100

¾ inch 75 to 100

No. 4 0 to 60

No. 40 0 to 50

No. 200 0 to 5

736 - Geocell

736.01 Geocell.

Furnish geocell material consisting of sheet strips fabricated from high-density polyethylene

(H.D.P.E.), connected in series at off-set, full-depth ultrasonic seams aligned perpendicular to the longitudinal axis of the strips. When expanded, the interconnected strips form the walls of a flexible, three-dimensional cellular confinement structure into which the specified infill material is placed.

736.02 Requirements. Furnish geocells consisting of polyethylene material treated to resist ultraviolet degradation and conforming to the requirements shown in table 736-1.

Table 736-1 – requirements for geocells.

Density ASTM D 1505 0.935 to 0.965 g/cm (58.4 to 60.2 pounds per cubic foot).

Environmental

Stress Crack

Resistance

ASTM D 1693 3000 hour

Strip Sheet

Thickness

ASTM D 5199 1.27 mm (50 mil), minus 5 percent, plus 10 percent.

Determine thickness in the flat before any surface texturing or other surface disruption.

Short-term peel strength

U.S. Army Corps of Engineers

Technical Report GL-86-19, Appendix A

2000 N (450 pound) minimum for

203 mm (8.0 inch) depth cell

Seam Hang Strength 101.6 mm (4”) weld joint supporting load of 72.5 kg (160 pounds) or

101.6 mm (4”) weld joint supporting load of 72.5 kg (160 pounds) while undergoing temperature change from 23 O C to 54 O

C (74 O

F to 130 O

F) on 1 hour cycles.

30 days minimum

7 days minimum