N.Fk.CabinBridge_Trail_32-6.3_ConstrSpec.pdf

NORTH FORK CABIN BRIDGE REPLACEMENT

TRAIL 32 – MP 6.3

LOLO NATIONAL FOREST

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

152 – Construction Survey and Staking

153 – Contractor Quality Control

155 - Schedules for Construction Contracts

156 - Public Traffic

157 - Soil Erosion Control

203 - Removal of Structures and Obstructions

204 - Excavation and Embankment

208 - Structure Excavation and Backfill for Selected Major Structures

251 - Riprap

272 - Geocell Abutment Stabilization

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.

http://www.nist.gov/

Change--“Change” means “change order” as used in the Federal Acquisition Regulations, or “design change” as used in the Timber Sale Contract.

Design Quantity--“Design quantity” is a Forest Service method of measurement from the FS-96 Forest Service Specifications for the Construction of Roads and Bridges. Under these FP specifications this term is replaced by the term “Contract Quantities”.

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.

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 – Riprap may be salvaged from existing abutments and piers and reused in the locations shown on the drawings. In the event that there is not adequate rock that can be salvaged, the Government shall identify a riprap source within one-quarter mile of the project site. Riprap shall consist of 12-inch diameter and larger rocks.

Borrow Source – Government Furnished – Contractor may use material from removals of existing timber cribbing abutments and from in-stream piers. If additional borrow is required, Government will identify a source within one-quarter mile of the site.

Waste Site – Government Furnished – A waste site for excess and unsuitable material shall be identified by the Government. This site is to be used for the disposal of unsuitable or excess excavated material only. It is anticipated that most material will be wasted on the bridge approaches. In the event that there is too much excess material to waste at the approaches, the Government will identify a Waste Site within one-quarter mile of the site. All other materials designated for removal and disposal must be disposed of away from Forest Land as per SPS Section 203. Treated timber shall be removed from the site. Hardware shall be removed from the site. Untreated timber shall be sawn and placed in burn piles, as directed by the CO. USFS will burn the piles.

Materials Stockpile Site- Government Furnished –Contractor will be allowed to stockpile material at the site adjacent to the bridge between May 1 and October 1. Materials must be stockpiled in such a manner as to allow for safe passage of the general public along the trail and to avoid damage to any trees at the bridge site. Provide the CO 72 hours advance notification prior to stockpiling any materials at the bridge site.

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

107.05 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.

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

Log 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

5 151 Bridge Erection Plan Plan and calculations Drawings Drawings

6 157 Soil Erosion and Pollution Control Plan Plan FSSS 157.03

7 272 Geocell Abutment Stabilization Material Certification 272.06

106, FSSS 736,

Drawings

8 272 Geocell: Course Granular Backfill Material Certification 272.06

106, FSSS 703.03,

Drawings

9 272 Geocell: Geotextile – Type II Material Certification 272.06 106, 714, Drawings

10 557 Timber Structures Shop Drawing 104.03 557, Drawings

11 557 Timber Structures: Materials Material Certification 557.19 106, 716, 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:

Each year, no closure of the trail or bridge shall be allowed before July 1. Should the Contractor require a closure at the site, the USFS will manage the closure. All in stream work must be accomplished from July 15 to September 1.

The Contractor shall place signage of detours or closures at the Trailhead.

Each year, the trail and passage over the bridge shall be re-established by September 15th.

It is the responsibility of the Contractor to schedule delivery of materials, equipment and all necessary supplies to the site, to ensure that the bridge can be substantially completed within the specified contract time. The Contractor shall give the CO at least two weeks advanced written notice prior to any trail closure. The Contractor shall be responsible for providing, installing, maintaining, and removal of warning signs and barricades required for the closure period in accordance with MUTCD as submitted and approved in the public traffic control plan.

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

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 an Erosion 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 Erosion 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.

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

203 - Removal of Structures and Obstructions

203.03 Salvaging Material.

Add the following to the last paragraph:

As shown on the drawings or at a location approved by the CO.

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. Treated timber shall be removed from the site. Hardware shall be removed from the site.

(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.

(f) Untreated Timber. Untreated timber shall be sawn and placed in burn piles, as directed by

CO.

204 - Excavation and Embankment

204.11 Compaction.

Delete section and add the following:

Layer Placement (Roller Compaction) Method. Place material to the minimum depth needed for operation of spreading equipment. Maximum compacted lift depth is 6 inches.

Adjust the moisture content to a level suitable for compaction. Operate compacting effort over the full width of each layer until visual displacement ceases, but not fewer than three complete passes. Compaction equipment shall be water-drum type or equivalent.

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 approved by the CO.

208 - Structure Excavation and Backfill for Selected Major Structures

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.

208.10 Backfill

Delete 1st sentence and replace the following:

Backfill with material meeting requirements under 703.03 – Backfill Material.

208.11 Compacting.

Delete this section and add the following:

Each layer to a depth of 2 feet over new structure shall be compacted with tampers until surface deformation is no longer visible. Adjust the moisture content of the backfill material to a moisture content suitable for compaction. Layers above 2 feet over the new structure shall be compacted in accordance with FSSS 204 – Excavation and Embankment.

208.12 Acceptance.

Delete reference to Table 208-1:

Delete Table 208-1:

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.

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 (a) 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 or gabion. 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. 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.

Compact the infill material with a roller 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.

703 - Aggregate

703.03 Granular Backfill.

(c) Course 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. Native material from site that generally meets this gradation may be considered for use.

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/cm3 (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 23O C to 54O C (74O F to 130O F) on 1 hour cycles.

30 days minimum

7 days minimum

736 - Geocell