Big_Larch_Boat_Ramp_FSSS.pdf

i

FOREST SERVICE

SUPPLEMENTAL SPECIFICATIONS

For

BIG LARCH BOAT RAMP

RAMP & DOCK REPLACEMENT

DJ&A, P.C.

Engineers - Planners - Surveyors

3203 So. Russell St Missoula, MT 59801

U.S.D.A. FOREST SERVICE

LOLO NATIONAL FORESTS

February 2018 ii

Table of Contents

Table of Contents ............................................................................................................................ ii Preface............................................................................................................................................ iv

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

204 - Excavation and Embankment

208 - Structure Excavation and Backfill for Selected Major Structures

251 - Riprap

302 – Minor Crushed Aggregate

403 - Asphalt Concrete

552 - Structural Concrete

553A – Precast Concrete Structures

571 – Prefabricated Dock Gangway

572 – Prefabricated Floatable Aluminum Truss Dock System

601 - Minor Concrete Structures iii

619 – Fences, Gates, Cattle Guards, and Bollard Posts

622 - Rental Equipment

625 – Turf Establishment

626 - Plants, Trees, Shrubs, Vines, and Groundcovers

703 – Aggregate

704 – Soil

705 – Rock

709 - Reinforcing Steel and Wire Rope

713 - Roadside Improvement Material

725 – Miscellaneous Material iv

Preface

Delete all but the first paragraph and add the following:

The Forest Service, US Department of Agriculture has adopted FP-14 for construction of National Forest System Roads.

U.S. Customary units of measure are used in the FP-14 as provided in the November 25, 2008 Memorandum from Jeffrey F. Paniati entitled Update on Metric Use Requirements for FHWA Documents. Metric units are noted in parentheses following the U.S. Customary Units. The references to Metric or Metric units apply only when the project or portion of the project expressly calls for Metric units of measure.

101 - Terms, Format, and Definitions

101.01 Meaning of Terms.

Add the following:

Delete all references in FP-14 to Transportation Acquisition Regulations (TAR).

101.03 Abbreviations.

Add the following to (a) Acronyms:

AFPA

MSHA

NESC

WCLIB

American Forest and Paper Association Mine Safety and Health Administration 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.

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 ht of

W ay

R oa ds id e R oa ds id e

C le ar in g W id th

R oa dw ay

C le ar in g Li m it

X Y

G ro un d

Li ne

Tr av el ed

W ay C L

B er m S ur fa ce C ou rs e B as e

C ou rs e

Fi ll

S lo pe

B ac k Sl op e

D ra in ag e D itc h

G ro un d

Li ne

S ub gr ad e

R oa d Be d

S ha pe s an d di m en si on s w ill va ry to fi t l oc al c on di tio ns

S ee d ra w in gs fo r t yp ic al s ec tio ns

X a nd Y d en ot e cl ea rin g ou ts id e of ro ad w ay

N ot e:

Right - of - Way Line

Right - of - Way Line

Clearing Limit

Shoulder

Shoulder

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:

Big Larch Campground Boat Ramp & Dock Replacement The intent of the contract is to remove an existing concrete boat ramp and floating dock and replace it with a new boat ramp and floating dock. This project is located within the Big Larch Campground near Seeley Lake, Montana, in the Lolo National Forest. The project is located in Section 34, T. 17 N., R. 15 W., Missoula County, Montana.

This project includes removing and disposing an existing concrete boat ramp, removing and stockpiling an existing floating boat dock, structural excavation, roadway embankment, backfilling, hauling and placing aggregate base, compacting, constructing a new concrete boat ramp, furnishing and installing a prefabricated floating boat dock, riprap placement, asphalt paving, and sign placement. 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 Control of Work:

Delete sections 104.01, 104.02, 104.04.

104.05 Load Restrictions.

Delete this Subsection in its’ entirety and substitute 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 Material Sources

Add the following before the first paragraph.

Sources have been designated for this project as follows:

Unclassified Borrow – Government Furnished – The designated Government source for unclassified borrow on this project is the Government stockpile at the Fawn Creek Pit.

Aggregate Base – Government Furnished – The designated Government source for aggregate base material on this project is the Government stockpile at the Fawn Creek Pit.

Riprap – Government Furnished – The designated Government source for riprap on this project is the Government stockpile at the Morrell Pit.

Waste Site – Contractor Furnished –All materials designated for removal and disposal must be disposed of away from Forest Lands.

Boulders – Contractor Furnished – There is no Government source for boulders for this project.

Seed – Contractor Furnished – There is no Government source for seed for this project.

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

Prior to use of any 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 Seeley Lake will be allowed only as specified in the approved permits.

107.05 Responsibility for Damage Claims.

Delete the entire subsection.

107.06 Contractor’s Responsibility for Work.

Delete the following:

“except as provided in Subsection 106.07”.

107.09 Legal Relationship of the Parties.

Delete the entire subsection:

107.10 Environmental Protection.

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.

Describe how the contractor will comply with the following three methods to minimize fuel/oil leakage from construction equipment into the stream channel. Include the following:

i. Clean all equipment used for in-water work so that it is free of external oil, grease, dirt and mud, and repair leaks, prior to arriving at the project site. All equipment will be inspected by the Contracting Officer’s Representative before unloading at site.

Correct any leaks or accumulations of grease before entering the lake or areas that drain directly to the lake or wetlands.

ii. Fuel and service equipment used for in-water or riparian work (including chainsaws and other hand power tools) in an established staging area (site-specifically recommended by CO). When not in use, store vehicles in the designated staging area.

The staging area should be in an area that will not deliver fuel, oil, etc., to adjacent waterways.

iii. Oil-absorbing floating booms, and other equipment such as pads and absorbent “peanuts” appropriate for the size of the in-water work activities, shall be available on site during all phases of construction. Pads and straw bales to anchor booms may be necessary. Place booms in a location that facilitates an immediate response to potential petroleum leakage.

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. Follow Federal and State of Montana regulations regarding spills. Report any spills resulting in a detectable sheen on water to the EPA National Response Center (1-800-424-8802). Report any spills over 25 gallons to the Montana DEQ (1-800-457- 0568), and initiate cleanup within 24 hours of the spill.

• 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.

109.01 Measurement of Work.

Delete the second sentence of the third paragraph and Table 109-1

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.

151 - Mobilization

Delete Section 151 in its entirety and replace with the following.

Description

151.01. This work consists of moving personnel, equipment, material, and incidentals to the project and performing all work necessary before beginning work at the project site; obtaining of permits, insurance, and bonds. This work also includes washing and treating construction equipment and vehicles necessary for equipment transport to remove seeds, plants, and plant fragments before the equipment is used on Forest Service lands, according to the requirements within.

Construction Requirements

151.02. Wash the sides, tops, and undercarriages of all construction equipment. Remove all seeds, plants, plant fragments, dirt, and debris from the construction equipment. Only equipment inspected by the Forest Service will be allowed to operate within the project area. All subsequent move-ins of equipment to the project area will be treated in the same manner as the initial move-in. This requirement does not apply to cars, pickup trucks, and other vehicles that regularly travel between the construction site and areas off the National Forest.

Equipment will be considered free of soil, seed, and other such debris when a visual inspection does not disclose such material. Disassembly of equipment, components or the need for specialized inspection tools is not required.

Notify the CO in writing at least 72 hours before moving any construction equipment onto the national forest. Notification will include an agreed upon location where the equipment will be available for inspection by the Forest Service. Inspection will be required after every cleaning.

Use methods of cleaning and locations for cleaning approved by the CO.

For work at a commercial washing facility, use an approved facility.

New infestations of noxious weeds of concern to Forest Service and identified by either Contractor or Forest Service, in the Project Area or on the haul route, will be promptly reported to the other party. Contractor and Forest Service will agree on treatment methods to reduce or stop the spread of noxious weeds when new infestations are found. A current list of noxious weeds of concern to Forest Service is available at each Forest Service office.

Aquatic:

Wash the outside and inside of equipment that will come in contact with waterbodies, such as streams, lakes, wetlands, and ditches with one of the following approved methods:

1. Wash debris, mud, sediments, organisms, plant material and fragments from all equipment that will enter water feature. Allow equipment to thoroughly air dry (inside and out) for a minimum of 48 hrs

2. Wash equipments with heated water (>140° F) for a minimum of ten minutes and until all mud, sediments, organisms, plant material and fragments are removed from equipment.

Allow equipment to thoroughly air dry for a minimum of two hours, or until no visible moisture exits.

3. Wash equipment with a minimum of 5% Quaternary ammonium solution (Quat128 Sparquat256) for a minimum of ten minutes and until all mud, sediments, organisms, plant material and fragments are removed from equipment. Allow equipment to thoroughly air dry for a minimum of two hours, or until no visible moisture exits.

Only equipment inspected by the Forest Service will be allowed to operate within the project.

All subsequent move-ins of equipment to the project area will be treated in the same manner as the initial move-in Equipment will be considered free of debris, mud, sediments, organisms, plant material and fragments when a visual inspection does not disclose such material. Disassembly of equipment, components or the need for specialized inspection tools is not required.

Measurement

151.03 Clean equipment prior to moving onto this project. The initial cleaning will not be included in the measurement for payment. Payment for cleaning will only be made if subsequent cleanings are ordered by the CO. Measurement shall be on an “each” basis, meaning one complete cleaning of all equipment required for this contract. Subsequent cleanings necessitated by the Contractor’s actions but not directed by the CO will not be included in the measurement for payment.

Measure mobilization according to Subsection 109.02.

Payment

151.04. The accepted quantity, measured as provided in Subsection 109.02, will be paid at the contract price per unit of measurement for the Section 151 pay item shown in the bid schedule.

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

Progress payments for mobilization lump sum will be paid as follows:

(a) If applicable, bond premiums will be reimbursed according to FAR Clause 52.232-5 Payments Under Fixed-Price Construction Contracts, after receipt of the evidence of payment.

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

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

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

Include all costs associated with the initial cleaning of equipment in the unit bid price for Mobilization. Cleaning for subsequent move-ins will not be paid for unless after a suspension ordered by the CO.

152 – Construction Survey and Staking

152.02 Qualifications.

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 Dewatering Plan Plan FSSS 157.04 Drawings

6 157 Soil Erosion and Pollution Control Plan Plan FSSS 157.03

7 404 Asphalt Mix Design 404.02 106

8 404 Asphalt Testing Test Results 404.09 106

9 552 Structural Concrete: Mix Design Mix Design 552.03 553, 553A, Drawings

10 552 Structural Concrete: Testing Test Results 552.19 106, Drawings

11 553 Reinforcing Steel and Wire Rope Material Certification 709.01 553, Drawings

12 553A Precast Concrete Structures Shop Drawing FSSS 553A.04 104, 552, 553, 13 553A Precast Concrete Structures: Testing Test Results FSSS 553A.02 106, 554, 562

14 553A Precast Concrete Structures: Design Design Calculations FSSS 553A.04 106, 554, 562

15 571 Prefabricated Dock Gangway Manufacture’s Literature FSSS 571 Drawings

16 572 Prefabricated Floatable Aluminum Truss Dock

Manufacture’s Literature FSSS 572 Drawings

17 622 Equipment Rental Equipment Approval FSSS 622.02

Submittal Log

Log No.

Incidental to

Pay Item(s) Description of Submittal

Type of Submittal

Requirement found in

Specification No.

/Drawings

Additional Specification References

18 625 Fertilizer, Seed Mix, & Mulch Material Certification 625.06, 625.07

106, FSSS 625,

713, 155 - Schedules for Construction Contracts

Delete Section 155 in its entirety.

156 - Public Traffic

156.03 Qualifications. Delete this Subsection in its’ entirety

156.04 Accommodating Traffic During Work.

Delete the first paragraph and replace with the following:

The Contractor will be allowed to close the Big Larch Campground Boat Launch access road in the immediate vicinity of the project to public traffic during construction. 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 (temporary traffic control 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.

As a part of the sign plan, the Contractor will be required to furnish and install an advance road closed sign

Delete the following from the last paragraph:

…..according to Subsection 106.07(b)

The Contractor will not be allowed to close the Big Larch Campground Road, Road No.

340, north of the boat trailer parking area, to through traffic during construction.

156.09 Traffic Control 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.

157.04 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 within the lake a detailed dewatering / precast plank placement plan.

(e) For work adjacent to the lake without 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.

157.05 Controls and Limitations on Work.

Add the following to the second paragraph:

Temporary erosion control measures will be in place throughout and at the end of each day’s operation. Earthwork operations may be temporarily suspended if significant rainfall is forecasted.

201 – Clearing and Grubbing

201.06 Disposal. Delete this subsection and substitute the following:

Dispose of construction slash by placing on embankment slopes to reduce soil erosion (Slash Windrow). 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 property of the Government.

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 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.

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

Add the following:

(e) Placing Slash on Embankment Slopes. Place construction slash on completed embankment slopes. Place construction slash as flat as practicable on the completed slope. All slash material not suitable for embankment slopes shall be disposed of within the Big Larch Campground area at locations designated in the field by the CO.

Additional topsoil generated from clearing and grubbing activities shall be placed on areas to be seeded or stockpiled as directed by the CO.

204 - Excavation and Embankment

204.11 Compaction.

Delete the contents of this Subsection and replace with the following:

Compact all embankments and roadbed materials using the following method:

1) Method 1. Moisten or dry the aggregate to a uniform moisture content suitable for compaction. Operate a vibratory steel-wheeled roller having a minimum weight of 5 ton, equipped with amplitude and frequency controls, over the full width of each layer until visual displacement ceases, making not fewer than three complete passes.

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 by removing off of Forest Service Lands in accordance with all local, state and federal requirements.

204.16 (e) Waste. Delete this paragraph

208 - Structure Excavation and Backfill for Selected Major Structures

Description

208.02 Add the following:

Aggregate Base 703.05 Backfill material 704.03

208.01 Delete this subsection and replace with the following

This work consists of excavating material for the construction of the boat ramp and for the regarding of the lake bank upon removal of the log retaining wall. This work includes preserving the lake bank, shoring and bracing, constructing cofferdams, sealing foundations, dewatering, excavating, preparing foundations, backfilling, constructing the road subgrade and subsequent removal of safety features and cofferdams.

208.04 General.

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.

208.09 Backfill.

Delete this Subsection in its’ entirety and substitute the following:

Backfill with material meeting the requirements of Subsection 703.05, Aggregate Base, or Subsection 704.03, Backfill Material.

Place backfill in horizontal layers that do not exceed 6 inches (150 millimeters) in compacted thickness. Do not place rock that is greater than 6 inches in its largest dimension within any backfill or embankment that is within 3 feet of any structure. Compact each layer according to Subsection 208.10.

Place backfill layers evenly on all sides of the structure as appropriate. Extend each layer to the limits of the excavation or to natural ground.

Do not place backfill against concrete until 80 percent of the design strength is achieved.

Backfill in or next to a running waterway according to Subsection 208.04.

208.10 Compaction.

Delete the contents of this Subsection and replace with the following:

Compact all boat ramp and gangway abutment backfill and foundation preparation materials using the following method:

2) Method 1. Moisten or dry the aggregate to a uniform moisture content suitable for compaction. Operate a vibratory steel-wheeled roller having a minimum weight of 5 ton, equipped with amplitude and frequency controls, over the full width of each layer until visual displacement ceases, making not fewer than three complete passes.

251 - Riprap

251.01 Description

Delete the first sentence and add the following:

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

251.07 Acceptance

Delete the fourth sentence and add the following:

Structure excavation and backfill will be evaluated under section 208.

302 – Minor Crushed Aggregate

Delete section 302 in its entirety and replace with the following:

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

Material

302.02 Conform to the following Subsections:

Aggregate Base 703.05 Water 725.01

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

302.04 Placing Aggregate Base.

(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 302.05(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.

302.05 Compacting and Finishing Aggregate Base.

(a) Roadway aggregate. Adjust the moisture content of the material to a level suitable for compaction. Operate compaction equipment over the full width of each layer until visible deformation of the layer ceases. Make at least three complete passes.

Blade the surface of each layer during the compaction operations to remove irregularities and produce a smooth, even surface.

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.

(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.

302.06 Acceptance. Aggregate base 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. 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 aggregate base is placed will be evaluated under Section 303 and 209 as applicable.

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

Measure aggregate base 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.

302.08 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.

403 - Asphalt Concrete

403.02 Composition of Mix (Job-Mix Formula).

Add the following:

After review of the submitted mix design the Contracting Officer may increase the asphalt content to be used for construction, up to 0.3% over that recommended by the Laboratory mix design.

403.12 Acceptance.

Add the following:

The acceptable range of asphalt content for the mix will be the Contracting Officer approved asphalt mix content + or - 0.4%.

552 - Structural Concrete

552.08 Delivery.

(a) Truck mixer/agitator.

Do not exceed 300 total revolutions, including both mixing and agitating speed.

552.11(b)(6). Delete this Subsection and substitute the following:

(6) Precast elements.

(a) 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 either of the following certifications:

Precast / Prestressed Concrete Institute (PCI) 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.

(b) Casting Yard. The precasting of concrete structural members may be done at a casting yard of an industry-certified plant or a casting yard of the Contractor’s choice with the appropriate certifications discussed above.

(c) Tolerances. Place and consolidate concrete so that shrinkage cracks are not produced in the member.

Verify that the prefabricated elements will fit-up and align properly before shipping from the precast facility. Assembling each superstructure and substructure composed of prefabricated elements in the yard prior to shipping the elements to the project site would be a suitable way for performing such verification. If assembled in the yard, use blocking to simulate the support of the elements and the spacing between the elements. Verify all elements are constructed in compliance with all plan requirements. Dry fit all connections in the fabrication yard prior to installation of the elements at the bridge site.

(d) Submittals. Submit fabrication and installation drawings for approval according to Subsection 104.03.

(1) Fabrication drawings. Show all details necessary for fabrication, including the following:

(a) Details and location of all lifting holes, inserts, hardware, devices, and any additional reinforcing required for lifting. Include supporting calculations and lifting procedures.

(b) Describe the method of curing, handling, storing, and transporting the elements.

(c) Leveling inserts in the deck and leveling procedure.

(d) Details of vertical elevation adjusting hardware.

(e) Minimum compressive strength to be attained prior to handling precast concrete deck and deck overhang elements.

(f) Details of structural steel, shear connectors, bearing assemblies, and elastomeric bearing pads.

(g) Concrete mix design.

Do not order materials or begin work until receiving final approval of the shop drawings.

(e) Quality Assurance.

(1) Permanently mark each element with date of fabrication, supplier identification and module identification. Stamp markings in fresh concrete.

(2) Prevent cracking or damage of precast components during handling and storage.

(3) Replace or repair defective or broken precast concrete elements according to Section

106. Requests to repair defective or broken elements are subject to the following:

(a) Obtain approval before performing concrete repairs.

(b) Concrete repair work must reestablish the module’s structural integrity, durability, and aesthetics to the satisfaction of the CO.

(c) Describe the cause of damage and the corrective action taken to eliminate future damage.

(d) An updated CPM schedule showing the effects of repair work on project completion.

(4) Elements will be rejected if they do not conform to the contract documents, and for the following reasons:

(a) Elements fabricated before the date that shop drawings are approved.

(b) Full-depth cracking of concrete, and concrete breakage that is not repairable.

(c) Cracks that extend to the nearest reinforcement plane, or fine surface cracks that do not extend to the nearest reinforcement plane but are numerous or extensive.

(d) Camber that does not meet the requirements of the plans or fabrication drawings.

(e) Honeycombed texture.

(f) Dimensions exceeding the allowable tolerances.

(g) Damage during fabrication, transportation, erection, or construction.

(5) Document all test results for structural concrete. Show in the quality control files at least the following information:

(a) Element identification.

(b) Date and time of fabrication concrete pour.

(c) Concrete cylinder test results.

(d) Concrete mix design and the batch print out.

(e) Form-stripping date.

(f) Location and number of blockouts and lifting inserts.

(g) Temperature, moisture, and duration of curing period.

(h) Approved repair procedures.

(f) Handling, storing and transporting.

(1) Damage/Cracking. Prevent cracking or damage of prefabricated elements and modules during handling, storing and transporting.

(2) Precast Element Sizes. Finalize the size of precast elements with consideration for shipping restrictions, equipment availability and site constraints. Show the final element sizes on the assembly plan.

(3) Lifting Devices. The design and detail of the lifting devices is the responsibility of the Contractor. Use lifting devices in a manner that does not cause damage, cracking or torsional forces. Place the lifting devices in locations that are not visible once the prefabricated element is placed, or within recessed pockets that can be patched after installation.

(4) Safety. The Contractor is responsible for the safety and stability of prefabricated elements during all stages of handling, transportation and construction.

(5) Handling and Storing. Store the precast units in a horizontal and upright position, supported at their designated bearing points. Follow Chapter 5 of the PCI Design Handbook for handling and erection bracing requirements.

Lift the precast elements so that the angle between the top surface of the precast element and the lifting line is not less than 60 degrees when measured from the top surface of the precast elements to the lifting line. If two cranes are used, then the lifting lines shall be vertical. Lift the modules at the designated points. The Contractor is responsible for handling stresses in the modules. Choose the locations of the lifting points so that the anticipated flexural tensile stress induced in the top of the structural concrete for the assumed support locations is not greater than the allowable stress.

Select smooth and well compacted storage areas to prevent damage due to differential settlement. Support precast elements during storage to prevent cracking or creep induced deformation (sagging). Check precast elements at least once per month to ensure that creep-induced deformation does not occur.

Protect the elements from freezing temperatures for 5 days after casting or until precast concrete attains design compressive strength. Do not remove thermal protection any time before the units attain the specified compressive strength when the surrounding air temperature is below 20 °F (-6 °C).

553A – Precast Concrete Structures

Description 553A.01 Work. This work consists of designing, fabricating, and installing precast concrete boat ramp plank sections AS SHOWN ON THE DRAWINGS. The precast concrete plank sections shall be contractor designed units to the overall dimensions shown on the drawings. The contractor’s design shall be submitted for approval (see section 553A.04 below). The work also includes steel connections for linking the plank sections together, hardware, shop drawings, and other incidentals as required.

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

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 the following certifications:

Precast/Prestressed Concrete Institute (PCI)

Commercial 1, Precast Concrete Products (no prestressed reinforcing)

National Precast Concrete Association (NPCA)

• Precast

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

Submit four sets of precast concrete boat ramp plank shop drawings at least 7 days in advance of the start of fabrication to allow time for review and correction of any changes and approval by the CO. Include plan, elevation, and section views of the precast ramp planks, dimensions of all components, welding and connection details, and general and specific notes regarding fabrication and construction. Submit concrete mix design for each class of concrete proposed for use before fabrication of the precast members.

553A.04 Performance. Construct precast concrete structural members in accordance with the following sections and subsections, as applicable:

Reinforcing Steel ………………………………………………... 554 Storing, Transporting, & Erecting ………………………………. 553.09 Structural Concrete ……………………………………………… 552

553A.05 Handling, Transporting, & Erecting. Rig precast concrete plank sections with lifting devices to facilitate efficient installation and removal of these items. Place lifting devices so as not to interfere with traffic when the ramp planks are installed. 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.

Excavation and backfill will be evaluated under Section 208.

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, hardware, and other material contained within or attached to the unit for precast concrete 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

571 – Prefabricated Dock Gangway

571 Delete entire section and replace with the following:

571.01 Design, fabricate, deliver, and install a complete aluminum boat dock gangway system.

Provide a gangway fabricated by a commercial manufacturer with experience in boat dock gangway construction. Construct to the dimensions shown on the contract drawings. Include all incidental materials required to provide a completed structure ready for use.

571.02 Requirements. Use only aluminum extrusions for gangway structures meeting the aluminum alloy 6061-T6, 6063-T5 and 6063-Tg requirements and extruded in accordance with requirements of applicable sections of Federal Specification QQ-A-200. Use ultra-high molecular weight polyethylene rollers at the end of the gangway.

571.03 Decking. Provide polypropylene or aluminum decking with a slip resistant surface that provides light availability through the decking.

Use an aluminum transition plate on the roller end of the gangway AS SHOWN ON THE

DRAWINGS.

571.04 Design Requirements. Design the aluminum members to conform with the current edition of The Aluminum Association Specification and Guidelines for Aluminum Structures.

Construct gangway railings as a free span truss design. Provide aluminum welding in accordance with the ANSI/AWS D1.2-97 gas metal arc welding process and perform all welding by experienced operators. Construction all exposed surfaces and their welded joints so they are smooth and free of sharp or jagged edges.

Design the gangway for a live load of 85 pounds per square foot. Use deck material designed for a concentrated vertical load of 300 pounds distributed over a one square foot area. Design all handrails for a horizontal load of 20 pounds per linear foot.

Provide the hinged end of the gangway, designed by the gangway manufacturer, to connect to a concrete abutment as show on the drawings. The hinged connection must readily accommodate annual removal and installation of the gangway. Provide handrails on both sides of the gangway that are a minimum of 34” and a maximum of 38” above the top of the decking. Handrails are to meet the ADA-ABA Accessibility Guidelines.

Use a continuous kick plate consisting of aluminum flat bar along the edge of the walking surface inside the railing

571.05 Acceptance. Material and installation of the prefabricated dock gangway system will be evaluated under Section 106.02.

Measurement

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

Payment

571.07 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. Include all materials, and work necessary to design, furnish, transport and install the gangway, including the railing and connection to the abutment, as shown on the drawings. See Subsection 109.05.

572 – Prefabricated Floatable Aluminum Truss Dock System

572 Delete entire section and replace with the following:

572.01 Design, fabricate, deliver, and install a complete floatable aluminum truss dock.

Construct the length and width AS SHOWN ON THE DRAWINGS.

Material

572.02 Conform to the following Subsections:

Steel Pipe Piling 715.05 Bolts and nuts 717.01(d) High-strength bolts, nuts, and washers 717.01(e) Galvanized Coatings 717.07

Floats 725.31

572.03 Provide a self-contained dock system from a commercial manufacturer experienced in floatable aluminum truss dock system construction. Construct to the dimensions shown on the contract drawings. Include all incidental materials required to provide a completed structure ready for use.

572.04 Design Requirements. Design the dock to support a uniform live load of at least 35 psf.

Use deck material designed for a concentrated vertical load of 300 pounds distributed over a one square foot area. Calculate the maximum deflection of the structure using L/180 where “L” is the span length in inches. Size all flotation devices and install to provide a minimum freeboard of nine (9) inches under dead load plus a concentrated load of 400 lbs., applied evenly over a square foot area, at any location on the walking surface. Additional flotation may be added to support the additional loading caused by gangways.

All dock sections must be designed with removable sections and floats that enable them to be removed from the water for winter storage. Dock sections must be sufficiently braced to withstand yearly removal and launching.

Dock sections are to have a rigid connection that is designed to resist all anticipated loading and can be easily disconnected for removal from the water for winter storage. Gaps in the top surface between dock sections must be covered for pedestrian safety.

Design the steel pipe piling size, thickness and spacing as needed for the dock system proposed.

As a minimum, use 2.5” diameter schedule 40 steel pipe piles having a wall thickness of 0.203”.

Use outboard pile guide brackets capable of accepting round metal piles of the size specified.

Externally mount all outboard pile guides with a minimum 3/8-inch galvanized steel hex head…