J-5_FSSS_M-C_Boat_Docks.pdf

i

FOREST SERVICE

SUPPLEMENTAL SPECIFICATIONS

FOR

MERIWETHER – COULTER

BOAT DOCK RECONSTRUCTION

U.S.D.A Forest Service, Region 1 Helena National Forest Helena Ranger District

Lewis & Clark County, Montana

Prepared by:

GREAT WEST ENGINEERING

2501 Belt View Drive

Helena, MT 59604 ii

MERIWETHER – COULTER BOAT DOCK RECONSTRUCTION

FOREST SERVICE SUPPLEMENTAL SPECIFICATIONS

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

251 – RIPRAP

253 – GABIONS AND REVET MATTRESSES

308 – MINOR CRUSHED AGGREGATE

308 – MINOR CRUSHED AGGREGATE

553A – PRECAST CONCRETE STRUCTURES

623 – GENERAL LABOR

645 – PREFABRICATED DOCK GANGWAY

646 – ALL-IN-ONE FLOATABLE DOCK SYSTEM

705 – ROCK

APPENDIX A – GEOTECHNICAL EVALUATION

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 and other applicable facilities.

101 – TERMS, FORMAT, AND DEFINITIONS

101.01 Meaning of Terms.

Add the following:

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.

http://www.nist.gov/

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.

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, methods of measurement, unit price, and amount.

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

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

Figure 101-1—Illustration of road structure terms.

R ig h t o f

W a y

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

C le a ri n g W id th

R o a d w a y

C le a ri n g

L im it X

Y

G ro u n d

L in e

T ra v e le d

W a y

C L B e rm

S u rf a c e

C o u rs e

B a s e

C o u rs e

F ill

S lo p e

B a c k S lo p e

D ra in a g e D itc h

G ro u n d

L in e

S u b g ra d e

R o a d B e d

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

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

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

N o te

Right - of - Way Line

Right - of - Way Line

Clearing Limit

Shoulder

Shoulder

102 – BID, AWARD, AND EXECUTION OF CONTRACT

102 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.

The project consists of the supply and installation of new all-in-one floatable boat dock systems at the Meriwether and Coulter recreation sites on Holter Lake.

BASE BID: The Meriwether Picnic Area boat docks will provide access for a tour boat and eight new recreational boat slips. A gabion barge mooring/landing structure will also be constructed at the site. Meriwether improvements consist of, but are not limited to:

structure excavation, timber retaining wall repairs, installation of gabions & revet mattresses, installation of reinforced concrete bulkheads, signing, placement of wave armoring, crushed aggregate surfacing, floatable dock system, and aluminum gangways/ramps.

OPTION 1: The Coulter Campground recreational site boat docks will provide access for six to eight new recreational boat slips. Coulter improvements consist of, but are not limited to: structure excavation, installation of reinforced concrete bulkheads, crushed aggregate surfacing, supply and installation of floatable dock system, and an aluminum gangway. Optional work items consist of an additional dock section providing access for two boat slips.

OPTION 2: The existing timber and foam fabricated dock system to be replaced is in ill repair and will be in excess to Forest Service needs after installation of new dock systems. Demolition and disposal consists of, but is not limited to: demolition, removal and disposal of existing Meriwether and Coulter boat docks. Docks will be stored at the

Gates of the Mountains Marina at the conclusion of the 2015 summer season.

NOTE: The floating dock system may be an EZ Dock system using ThruFlow® panels for gangway frames and railings or an approved equal. An “equal” item shall comply with the salient physical, functional, and performance characteristics provided in the Supplemental Specifications, Section 645 & 646. (FAR 11.104 –Use of

Brand Name or Equal Purchase Descriptions)

The projects are located 20 miles north of Helena, Montana and four miles downstream from the Gates of the Mountains Marina on Holter Lake. Refer to the location map on the title sheet of the plans.

104 – CONTROL OF WORK

104 Control of Work.

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 and trails 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/trails or national forest resources, and when traffic can be accommodated safely.

Add the following subsection:

104.07 Use of Dispersed Site by Contractor

The Contractor is authorized to use the sites adjacent to the proposed boat docks for the purposes of materials and equipment staging. These locations may also be utilized by the

Contractor as a fee-free camping area and for all other activities necessary to complete this contract, subject to the limitations and authorizations designated or described in the contract, when such use will not damage National Forest resources.

105 – CONTROL OF MATERIAL

105.02 Material Sources.

Add the following before the first paragraph.

Sources have been designated for this project as follows:

Crushed Aggregate – Commercial Source

Riprap Source – Commercial Source

Seeding – Government Furnished & Installed – Following construction, the Forest

Service will seed site disturbances.

Gabion Infill Rock Source – Government Furnished – A rock source for the gabions is available at the Meriwether Picnic Area project site. Rock will require development and sorting/screening to meet the specified gradation. The C.O. will designate an appropriate processing location near the existing Picnic Shelter

(approximately 100 yards NE of the mooring barge location).

Approved Material Stockpile Site– The Contractor will be allowed to stockpile material, including riprap, and dock components at the site adjacent to the existing facilities. Materials must be stockpiled in such a manner as to allow for safe passage of the general public, to avoid damage to any trees at the project site and must be placed above the ordinary high water mark. Provide the CO 72 hours advance notification prior to stockpiling any materials at the construction sites.

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.

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

Delete the following entire subsections:

109.06 Pricing of Adjustments.

109.07 Eliminated Work.

109.08 Progress Payments.

109.09 Final Payment.

Add the following Definition:

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.

151 – MOBILIZATION

151.01 Description

A preliminary construction schedule shall be submitted to the C.O. at least 7 days prior to the preconstruction meeting.

Work also includes cleaning all construction equipment prior to entry on to Forest Lands.

Remove all dirt, plant parts and material that may carry noxious weed seeds into the area.

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. The Contractor shall give the Forest Service at least 24 hours advance notification when equipment is ready for inspection. The location for inspection shall be as agreed upon in the preconstruction meeting.

The project sites are remote. There is no wheeled vehicular access. The work sites can be accessed via boat, barge, or aircraft only. As part of the submitted bid, the Contractor shall develop and give special consideration to a plan that outlines safe and prudent construction access, equipment use, and materials transport/handling. Preparation of a

Site Access Plan; supply and operation of transport equipment; and all other specialized materials and construction equipment for site access work is incidental to Mobilization.

At least 21 days in advance of mobilization to the site, the Contractor shall contact the

Gates of the Mountains Resident Manager, Tim Crawford (phone: (406) 458-5241, Email: tcrawford@gatesofthemountains.com), to coordinate use of the marina boat launch for materials, labor, and equipment ingress to the project sites. Refer to FSSS 156 for additional launch and traffic requirements.

151.03 Payment

Include all costs associated with the cleaning of equipment in the unit price for

Mobilization.

152 – CONSTRUCTION SURVEY AND STAKING

152.03 Survey and Staking Requirements.

This work consists of constructing stringlines and/or other references to assist the

Contractor in performing construction staking (or offset work) as required to complete the project in accordance with the drawings and specifications. A survey baseline has been set at each project site to help facilitate the Contractor’s location of the improvements and to allow for setting of construction stakes (as needed). The location of the new facilities shall be approved by the C.O. prior to installation. It will be the

Contractor’s responsibility to protect the baseline and construction stakes until the work has been accepted by the Government. Any replacement of baseline and construction stakes that are lost due to Contractor’s construction activities will be re-established at the expense of the Contractor.

All construction survey and/or staking work as required to build the improvements according to the Construction Plans is incidental to Bid Item Numbers: 25302, 25309 &

55204.

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 Submittal Schedule Schedule

2 151 Hazardous Spill Plan Plan FSSS 107.10

3 151 Contractor Quality Control Plan Plan 153.02 552.09

4 151 Material Storage/Staging Plan/Site

Access Plan

Plan and

Description FSSS 151 Drawings

5 157 Soil Erosion and Pollution Control

Plan Plan FSSS 157.03

6 251 Riprap Material

Certification

251.07, FSSS

251.07

106, 705, Drawings

7 253 Gabions & Revet Mattresses

Material

Certification, Shop Drawings

253, FSSS 253.03 Drawings

8 308 Minor Crushed Aggregate Material

Certification 308 703.06

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 553A Precast Concrete Structures Material

Certification

106, 552, 554, 709, Drawings

12 553A Precast Concrete Structures Test Results

553.11

106, 552, Drawings

13 554 Reinforcing Steel

Order List, Material

Certification

554.03 552, 709, Drawings

Submittal Log

Log

No.

Incidental to

Pay

Item(s) Description of Submittal

Type of

Submittal

Requirement found in

Specification No.

/Drawings

Additional

Specification

References

14 633 Signs & Sign Posts Material

Certification 633 Drawings

15 645 Prefabricated Aluminum Gangway

Order List, Material

Certification

FSSS 646,

Drawings Drawings

16 646 Floatable Dock System

Order List, Material Cert., Design

FSSS 646,

Drawings Drawings

17 647 Stiffarm & Cross-Linkage

Connections

Order List, Material Cert., Design

Drawings 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 following from the last paragraph:

According to Subsection 106.07(b)

Add the following project specific requirements:

The Helena National Forest will close the Meriweather and Coulter sites to public use during the construction period. The Contractor shall give the Contracting

Officer (C.O.) at least 21 days advance written notice prior mobilization to the site to allow time for public notice of the closure period.

During the construction period, the Contractor will be responsible for maintaining all “site closure” signage as installed by the Forest Service.

It is the responsibility of the Contractor to schedule timely delivery of materials, equipment, and all necessary supplies and labor to the site, to ensure that the work can be substantially completed within the specified contract time.

The Gates of the Mountains Marina (GOM) is the most proximate commercial boat launch to the project sites. The marina is a privately-owened facility. As such, the Contractor will be required to coordinate all materials, equipment, and manpower ingress activities with the GOM Resident Manager, Tim Crawford.

Tim’s contact information is listed in FSSS 151. The Contractor will be responsible for daily launch fee(s) for all activities directly related to the completion of this project.

The Marina Boat Launch is open to the public daily from 7:30 AM to 10:00 PM

MST. The heaviest launch traffic typically occurs between 7:30 and 9:30 AM.

As such, manpower transport-related activities will be the only permitted use of the boat launch during these times. To optimize public access to (and use of) the

MOR facilities and Holter Lake, all other construction-related launch traffic shall take place between the hours of 9:30 AM and 10:00 PM.

For construction launch activities and/or large craft (or equipment) staging that will require more than 15 minutes, the Contractor shall coordinate with GOM at least 48 hours in advance of the proposed launch date. No heavy equipment or materials launches will be allowed on weekends or holidays.

156.08 Traffic and Safety Supervisor.

Delete this subsection in its entirety.

156.10 Measurement and payment.

Delete this subsection in its entirety and replace with the following:

Do not measure Public Traffic for payment. Compensation for this item shall be incidental to Mobilization.

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 without flowing water describe level of ground and vegetative disturbance and measures to reduce potential sediment delivery.

(e) 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, and equipment from Government property. The Forest Service will seed site disturbances following construction.

201 – CLEARING AND GRUBBING

201.01 Description

Delete and replace with the following

This work consists of minor clearing and grubbing within the clearing limits and other designated areas. Clearing includes the removal of shrubs/trees, tops, limbs, logs & stumps over an approximate 420 square yard area located at the Coulter Campground site in order to create for seasonal storage for dock components. All clearing must be clearly delineated and then approved by the Contracting Officer before any clearing and grubbing can take place.

Salvage all merchantable timber (larger than 5 ½ inches in diameter) and deck/stockpile onsite according to the C.O.’s direction.

All slash generated from clearing will be piled on site at locations staked by the C.O.

201.02 Material:

Delete: Tree wound dressing material reference.

201.03 General.

Delete the last sentence.

201.04 Clearing.

Delete the last sentence of (d).

201.06 Disposal.

Delete the first sentence of this subsection and substitute the following:

All merchantable timber and tree/shrub removal refuse generated within the clearing limits shall become the property of the Contractor and shall be disposed of off of the project site per all applicable local, State, and Federal statutes.

208 – STRUCTURE EXCAVATION AND BACKFILL FOR

SELECTED MAJOR STRUCTURES

208.04 General.

Use suitable excavated material for general construction backfill and structural backfill.

Field drain and dry excessively wet material that is otherwise suitable for embankment before placement. Place and shape unsuitable or excess material in the designated sites or as directed by the CO.

208.11 Compacting.

Delete this section and add the following:

Each layer shall be compacted with mechanical tampers until surface deformation is no longer visible. Adjust the moisture content of the backfill material to a moisture content suitable for compaction.

251 – RIPRAP

251.01 Description.

Replace with the following:

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

251.07 Acceptance.

Delete the first sentence and add the following:

Riprap material will not require sampling and testing. The CO will visually inspect and approve rock.

Delete the fourth sentence and add the following:

Structure excavation and backfill will be evaluated under section 208.

251.09 Payment.

The cost of excavation, embankment, and haul required for placement of riprap is incidental to the riprap pay item.

253 – GABIONS AND REVET MATTRESSES

253.03 General.

Delete the first sentence and add the following:

Refer to FSSS 152 for construction survey/location requirements for gabion placement.

Add the following:

Submit four sets of shop drawings to the CO for approval, including the full details on the materials to be used a minimum of 14 days before ordering materials.

253.06 Cell Filling.

Use material from the Government Source to fill gabion baskets.

253.09 Acceptance.

Delete the last paragraph and add the following:

Structure excavation, structure backfill, and backfill material will be evaluated under

Section 208.

308 – MINOR CRUSHED AGGREGATE

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

Description

308.01 This work consists of furnishing and placing crushed aggregate for bedding, backfill and trail 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 surface on which aggregate course is placed as shown on the plans. Compact subgrade to an unyielding condition prior to aggregate placement.

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) 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 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 project.

Measure width horizontally to include the top of aggregate width including designed widenings. Measure the length horizontally along the centerline of the improvement.

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

Description

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.

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.

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

Construction

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

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 a casting yard location selected by the Contractor.

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.

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.

623 – GENERAL LABOR

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

Furnish competent trained workers, appropriate hand tools, power tools, and equipment for work including, but not limited to the following; minor demolition, bolt tightening, trail building, clearing and grubbing, or other as directed by the C.O.

645 – PREFABRICATED DOCK GANGWAY

Description

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

Gangways shall be removable for winter storage. Each gangway shall weigh less than

340 pounds including decking, railing, and all appurtenances.

Construction Requirements

645.01 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.

645.02 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.

645.03 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 grade 304 stainless steel fasteners. Use ultra high molecular weight polyethylene or PVC rollers at the end of the gangway with ultraviolet light inhibitor added.

645.04 Design the gangway for a live load of 90 pounds per linear foot. Use deck material designed for a concentrated vertical load of 400 pounds distributed over a one square foot area. Deck material shall be composed of extruded aluminum, OR vented, interlocking virgin mineral fiber-reinforced polypropylene panels. Deck panels shall be skid resistant, UV treated, and maintenance free. Supply with light tan or maple colored deck panels. Design all handrails for a horizontal load of 20 pounds per linear foot.

Installed gangways shall meet current Americans with Disabilities Act (ADA) requirements for new construction.

645.05 Provide the hinged end of the gangway, designed by the gangway manufacturer, to connect to a concrete bulkhead/abutment and docks as show on the drawings.

645.06 Use an aluminum transition plate on the roller end of the gangway that is a minimum 0.25” thick by 48” wide by up to 30” long with a slip resistant surface.

645.07 Use a continuous kick plate along the edge of the walking surface inside the railing.

645.08 Submit manufactures literature, design calculation and/or shop drawings sufficiently in advance of the start of fabrication to allow to for review by the CO and correction of any changes.

645.09 Measure the Section 645 item listed in the bid schedule according to Subsection

109.02.

Payment

645.10 The accepted quantities will be paid at the contract price per unit of measurement for the Section 645 pay item listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05

646 – ALL-IN-ONE FLOATABLE DOCK SYSTEM

Description

Design, fabricate, deliver, and install floatable all-in-one docks comprised of light weight interchangeable modules with decking surface integral to floatation. Construct the length, width, and capacity of the dock systems, including all appurtenances as shown on the

Drawings (also referred to herein as Construction Plans).

646.01 General. Provide a self contained dock system from a commercial manufacturer experienced in molded, all-in-one dock construction. Construct components to the dimensions shown on the contract drawings. Include all incidental materials required to provide a completed structure ready for use. Incorporated steel products/components must comply with “Buy America” Act policies.

646.02 Design Requirements for Individual Dock Modules.

The dock system, anchorage, and connections shall be designed according to the recommendations of the American Society of Civil Engineers Manual and Report on

Engineering Practice Number 50, “Planning and Design Guidelines for Small Craft

Harbors”, the revised edition. At a minimum, conform to the live loading requirements stated on the Construction Plans and listed herein.

Each individual dock module/section shall consist of decking surface and the float structure, which are to be constructed as a single, integrated component. Each module shall provide for the support of the module dead load plus a specified live load of 62 pounds per square foot (+/- 1%). This shall be accomplished without the use of foam for either structural integrity or floatation. The dock sections shall be manufactured by a rotational molding process. The individual dock sections shall contain a number of integral interior, air-filled pylons. These pylons shall provide for floatation in the event of a breach of an exterior wall of the dock section; as well as the structural support for the deck portion of the float. Each interior air-filled pylon shall support the dead load plus a live load of 55 pounds. The volume of each air-filled pylon shall be no less than 1540 cubic inches.

Each module/section will incorporate a hydrophobic vent to be located at least 5 inches above mean water level. The purpose of this vent is to allow dock sections to “breath” such that they do not change shape due to air pressure fluctuations during atmospheric temperature changes. Hydrophobic vents shall not allow water to pass through.

646.03 Design Requirements for the Constructed Dock System.

Live loading and freeboard requirements for the assembled dock system (comprised of connected individual dock modules) are stated on the Construction Plans. Conform to the stated Plan requirements. The supplied dock system including stiffarm and cable supports shall be designed by a Professional Engineer. Submit stamped and sealed design drawings & calculations to the C.O. for review prior to ordering or fabrication.

The dock system shall be capable of withstanding the impact force caused by a 35 foot boat striking the end of a finger at a speed of 2 miles per hour (mph) and at an angle of 10 degrees off center.

646.04 Dock Material. Individual dock modules/sections shall be rotationally molded from virgin polymer, thermoplastic, linear, low-density polyethylene (LLDPE). LLDPE for dock module construction shall be molded with beige, light brown, or tan colorant and an ultraviolet (UV) light inhibitor additive. The completed modules shall be constructed to resist 8000 hours (or more) of UV exposure with less than a 7% decrease (cumulative) in the mechanical strength properties of the LLDPE.

All material used in the dock structure shall provide for resistance to rust, corrosion, and the effects of spilled any fuel or gasoline. All material designed and selected for marine environment and the conditions thereof.

646.05 Dock Properties and Strength Requirements.

(a) The dock section shall have a cold brittleness temperatures equal to (or less than)

-130 degrees Fahrenheit, per ASTM D-746:

(b) The properties of the exterior wall thickness of the dock sections shall be as follows:

(1) The mean exterior material thickness shall be no less than .310 inches.

(2) The corners shall be no less than .650 inches.

(3) The walls of the dock sections shall resist a shear of no less that 1900 pounds per square inch, per ASTM D-732, as well as having the capability of resisting a minimum impact of no less than 220 foot-pounds, per ASTM D5420.

(4) The tensile strength at failure shall be no less that 2630 pounds per square inch, per ASTM D638.

(c) The decking surface shall be composed of a textured surface with an overlying grid pattern for added adhesion during dry conditions. Drainage of the decking surface shall be accomplished through the use of troughs, which shall extend over the width of the dock and shall be positioned at intervals of no less that

4.5 inches and no greater than 6.5 inches over the entire length of the module.

Additional properties of the decking surface shall be as follows:

(1) The deck shall have an approximate coefficient of friction equal to 0.35 during dry conditions and 0.61 during wet conditions (as measured per

ASTM D2394).

(2) The mean deck thickness shall be no less than 0.315 inches.

(3) The deck thickness shall be no less than 0.290 inches at any particular point.

(4) The deck shall resist a punching shear which is no less that 1900 pounds per square inch, per ASTM D732.

(5) The deck shall resist a minimum impact of no less than 120 foot-pounds near the center, or at the point where the deck is thinnest, per ASTM D-

3029.

(6) The deck shall resist a minimum impact of no less that 150 foot-pounds within 16 inches of the outside of the module edge, per ASTM D-3029.

646.06 Floating Dock Structure/System. The dock structure, as a whole, shall consist of the individual modules/sections, which are to be coupled together in the specific configurations shown on the Construction Plans. The dock structure shall act as one unit when assembled, so that wave and/or wind action shall produce a minimum amount of motion. The securing stiffarms shall allow the structure to rise and fall freely with any water level changes and allow the structure to span waves from crest to crest, while providing a stable walking surface.

646.07 Connection of Dock Sections/Components. Each dock section shall have molded-in female-type pockets spaced symmetrically along the top and bottom edges, around the entire perimeter of the dock section. These pockets shall be spaced at 19.5 inch intervals, center line to center line, from each other. The molded-in female-type pockets shall accept a male-type tapered coupler which shall be secured into the female pocket with the use of a 0.5 inch x 13 inch coupler bolt and nut.

The purpose of such connections is to provide for simple assembly and disassembly, as well as providing for the securing of one section to another. The connection will also provide for the ability to attach accessories to the dock sections. Each connection point shall allow for some slippage in the event that an extreme stress is applied. This slippage will allow for disconnection without causing damage either to the male-type couplers or the female-type pockets.

Male-type couplers shall be constructed of no less than 90% post/pre-consumer recycled tire rubber. Each male-type coupler shall withstand a pullout force of no less than 2500 pounds before failure of coupler occurs. Each of the molded in female connection pocket shall provide for a pullout strength of no less than 3500 pounds, before damage is caused to the dock section.

The tops of adjacent connected dock modules shall have an elevation difference of no more than 0.125 inches. In addition, the deck surface of each individual dock module may not slope at a rate of more than 0.45% over the length and width each individual dock section.

Dock accessories (such as tie-up cleats) shall be connected to the dock system through the use of molded in coupler pockets and/or molded-in “T” nuts around the perimeter of the dock sections. Nuts embedded within the dock modules shall be stainless steel with the ability withstand a pullout force of no less that 2000 pounds before dock module failure occurs. Embedded nuts shall be installed in pairs at a distance of 2 to 3 inches between nuts. Nut pairs shall be molded into the dock sections equidistant between coupler pockets along the sides of each dock module.

646.08 Measure the Section 646 item listed in the bid schedule according to Subsection

109.02.

Payment

646.09 The accepted quantities will be paid at the contract price per unit of measurement for the Section 646 pay item listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05

705 – ROCK

705.01 Gabion and Revet Mattress Rock.

Delete this entire subsection and replace with the following:

Sort/Screen hard, durable rock that is resistant to weathering and reasonably free of organic and spoil material. Conform to the following:

(a) Gradation:

(1) Baskets 1 foot or greater in the vertical dimension.

(a) Maximum dimension 6 inches

(b) Minimum dimension 2 inches

(2) Baskets/Mattresses less than 1 foot in the vertical dimension.

(a) Maximum dimension 6 inches

(b) Minimum dimension 3 inches

APPENDIX A – GEOTECHNICAL EVALUATION