SOW for trail bridge replacement 4.doc

LBL Trail Bridge Replacement

Project Number CIM-0860-26T

Land Between The Lakes National Recreation Area

Scope of Work for Design-Build Services

I. General A. Introduction

Land Between The Lakes National Recreation Area (LBL) requests engineering and construction services for the design, demolition and construction of seventeen trail bridges as described below.

The Design-Builder shall provide all equipment, supplies, personnel, supervision, materials, quality control, and incidentals for the complete survey, geotechnical investigation, design, fabrication, and construction of the work described.

B. Description of Work

i. The project includes the design and replacement of seventeen trail bridges and the demolition and removal of seventeen old trail bridges.

ii. The design shall restore access from the trail across the creek including new approaches, abutments, and trail bridge.

C. Location

The project is located on the Land Between The Lakes NRA in both Kentucky and Tennessee. See attached maps for specific bridge locations. Any additional maps may be acquired from http://www.lbl.org/VCMaps.html

W 088 11 57.8

Canal Loop 2

N 36 58 12.4

W 088 11 57.8

W 088 09 41.1

W 088 07 49.6

W 088 06 18.1

W 088 04 51.0

W 088 04 13.3

W 088 04 12.5

W 087 58 53.9

W 087 59 48.8

W 087 55 79

W 087 55 36

W 087 54 92

W 087 55 48

W 088 10 45.1

W 088 10 43.1

W 088 10 49.8

D. Pre-Bid Tour

A pre-bid tour is planned as shown below.

i. Location: At Land Between The Lakes NRA Administration Building

ii. Date & Time: TBD E. Utilities

i. No known utilities are located within the work area, but the Design-Builder is urged to investigate any possible utility locations and shall preserve or replace any utilities damaged by the Contractor’s actions.

ii. There is no Government sanitation, water, electrical or housing services available. The Design-Builder shall make its own arrangements for temporary facilities. Temporary campsites may be approved, upon request of the contractor at least 14 days prior to planned use.

F. Government Project Leader

For additional Engineering information contact Ileana Nelson at 270-924-2066 For additional Trail information contact Bill Ryan at 270-924-2179 II. Technical Requirements

A. Scope

The Design-Builder shall prepare a final design package for the complete construction project.

B. Safety Plan

The Design-Builder shall prepare and adhere to a construction safety plan. The safety plan shall indicate safe procedures, emergency response actions and communications strategy.

C. Demolition Plan

The design builder shall prepare a demolition plan. The plan shall outline method of removal, timeframes, and disposal methods.

D. Erosion Control Plan

The Design-Builder shall prepare an erosion control plan which will minimize movement of construction sediment from the project site, which will meet all State of Kentucky or Tennessee, and Army Corps of Engineers requirements. Construction shall be consistent with “Best Management Practices for Erosion and Sedimentation Control”

E. Traffic Control Plan

A traffic control plan shall be prepared by the Design-Builder, with all temporary and permanent signing conforming to the Manual of Uniform Traffic Control Devices (MUTCD).

i. Closure of the entire work site will be allowed during construction.

ii. Any closures that may affect visitation must be approved by the Forest Service prior to implementation.

iii. Reflect in the traffic control plan closure locations and schedule.

F. Design Services Design services include the production of designs, plans/drawings, specifications, and cost estimates required to construct trail bridges. The Contractor shall conduct site surveys, including preparing topographic maps, surface geotechnical exploration, hydraulic surveys, and other significant data needed to prepare adequate design. Surveys shall be suitable for establishing limits of construction, control of work, and construction estimates. The Contractor shall contact the Government to schedule site visits and meetings required for design.

The Contractor shall use Forest Service Standard Trail Bridge Designs or prefabricated trail bridges for the superstructure. See attached drawings. The Contractor shall design the substructure.

The Contractor shall have on staff Licensed, Registered Professional Architects and Engineers, capable of overseeing, ensuring, stamping and signing all designs and calculations with State Seal for the specific disciplines required.

Design recommendations shall consider economic viability of the project. Design and construction shall incorporate standard products and procedures where practical to minimize project complexity and cost.

All design and construction shall be in accordance with applicable Federal, State, and local laws and regulations.

Surface exploration shall be the responsibility of the Design-Builder, and be commensurate with complexity of the project and proposed construction. The footing shall be designed with a soil bearing capacity of 2000 psi.

The Design-Builder shall prepare recommendations of design exceptions in writing for approval where conditions require deviation from design standards.

The Design-Builder shall be responsible for quality control of all phases of the Contract, including necessary supervision, inspection, sampling, testing and reporting.

G. Design Submittals

The Contactor shall provide three design packages. The trail bridges shall be grouped as follows:

North-South 25.5

*Package 3 is fiberglass bridges that have been purchased by the government and will be furnished to the contractor upon contract award.

The contractor may submit the first completed package for review to the Forest Service prior to completing the second or third packages in order to expedite the approval process.

The final submittal shall include two complete hard copy sets and one complete electronic set on CD-Rom. Hard copy sets shall be individually bound.

Final design packages shall be prepared in U.S. Customary Units consisting of the following subsections.

1. Construction Drawings:

A. Cover sheet stating the title of project, drawing index, vicinity map, project location

B. Plan, Profile, Civil, and Structural Drawings: existing and finish topography; new structure outline, elevations; structure and substructure details; removal of existing structure; construction limits

C. Specifications: Include index and sections

D. Schedule of items

E. Construction Cost Estimate

2. Construction Plans

a) Final plans shall be provided on 11" x 17" (B size) sheets with the standard Land Between The Lakes NRA title block (to be provided).

b) Electronic plans shall be AutoCAD 2008 compatible, free of external references and fully functional.

c) Specifications

Governing specifications shall be the USDA Forest Service Forest Service Specifications for Construction of Roads and Bridges, EM-7720-100 and Standard Specifications for Construction and Maintenance of Trails EM-7720-103. The Government may provide required special project specifications or supplements.

3. Submittal Review Process

All submittals will be reviewed and approved by the Forest Service. The Contractor shall make recommendations, and correct or adjust the project design at the option of the Government, to include drawings, specifications, and cost estimates. The design packages may be submitted separately so LBL and regional approval can be reviewed in a timely manner. Forest Service approval of drawings is required prior to the construction process.

4. Schedule of Items

a) The Schedule shall depict the units and quantities of work.

b) Item numbers shall be consistent with the Specifications.

c) Electronic Schedule of Items shall be Word 2007 compatible and fully functional.

5. Cost Estimate Provide construction cost estimates for each trail bridge design project. Cost Estimates must site the source from which the information was obtained and its copyright date. The Contractor shall use a nationally recognized Standard such as the Means Construction Cost Estimating Guides as the basis for the estimate and shall be approved by the Government. Labor rates used for estimates should be Davis-Bacon labor rates or higher. The Contractor shall take all practical precautions to prevent disclosure of the construction cost or any other information which might provide prospective contractors, manufacturers or suppliers with a bidding advantage. Show as many construction item quantities and costs as possible at each stage of design. Obtain material quotes for specific and high cost items. Provide all cost estimate data on CD in Microsoft Excel and Adobe Acrobat format.

6. Structure Requirements In Kentucky, the structure design for trail bridges must meet the safety requirements for pedestrian, bicycle, and light equipment (ATV/mower) used for trail maintenance.

In Tennessee, the structure design for trail bridges must meet the safety requirements for pedestrian and light equipment (ATV/mower) used for trail maintenance.

a. Span, Width, and Railings Final span lengths shall be determined by design.

Bridge width shall be 6' 0" and shall be measured from the inside face of structural elements at deck level.

Railings shall be either 54" or 42” above the floor deck.

b. Approach/Ramps All trail bridge approaches or ramps shall have a 5% slope or less.

c. Live Load

Bridges will be designed for 85 lb/ft2

d. Wind Load

All bridges shall be designed for a minimum wind load of 25 lb/ft2.

e. Live Load Deflection Limits Steel = L/500

Lumber = L/360

f. Substructure A reinforced concrete footing is preferred for all trail bridges. An alternative footing may be required due to access limitations. The contractor shall recommend footing type. The footing shall be designed with a soil bearing capacity of 2000 psf.

g. Hydraulic surveys The contractor shall consider Q2, Q50, and Q100 with 2 feet of freeboard.

h. ADA Requirements Brandon Facility trail bridge is located on an ADA pedestrian trail. The trail bridge and approach shall meet the requirements of ADA accessibility. The trail bridge approach shall be asphalt or concrete.

i. Design Specification References AASHTO Standard Specification for Highway Bridges

ASHTO Guide Specifications for Design of Pedestrian Bridges

National Design Specification for Wood Construction

American Wood Preservers Association Standards

ADA Accessibility Guidelines

Forest Service Manual 7700

Forest Service Handbook 7709.56b

7. Deliverables

A. An approximate schedule shall be followed to meet a construction completion date of March 01, 2011. The delivery schedule is dependent upon date of the Notice to Proceed and may be adjusted by the Forest Service as approved.

B. The Forest Service will set bridge priorities and the Contractor shall submit a construction plan in writing and shall be approved by the CO before beginning work. Contractor shall work during the timeframes approved by COR. The contractor shall furnish a timeline for the completion of each bridge upon approval to start the desired bridge. Bridges may be approved to be installed anytime prior to March 1, 2011 (due to field access and high use time periods). The contractor shall have the ability to complete multiple bridges within a compressed timeframe so as to optimize the completion of the trail bridges while fields are not in use.

C. Initial site visit shall be with the design engineers, and/or principal engineer, and the designated construction superintendent.

Table 1 – Deliverables Notice to Proceed

Package 1 preliminary

Package 2 preliminary

Package 3 preliminary

Final Design and Reports for Package 1

Final Design and Reports for Package 2

Final Design and Reports for Package 3

Commence Construction

Performance Completion

8. Construction Requirements

Construction shall be in accordance with the accepted and approved design, specifications, and drawings, as expanded, amended and approved by the Contracting Officer.

Construction shall not begin before approval of fabrication submittals, and shall proceed diligently until completion. Contractor shall perform the work in a safe and conscientious manner.

As-Built drawings shall be retained onsite during construction and updated as necessary to reflect changes in conditions or work. Mark such changes in red on the drawings. Submit one set of approved as-built drawings to the Government upon completion of work.

Design-Builder shall construct the project according to the approved Plans and Specifications.

Construction shall incorporate the approved erosion control plan.

A. Approved Area of Disturbance

The area of disturbance is restricted to 30 ft. either side of the bridge and 50 feet either direction up and down stream.

B. Construction Time Restrictions Construction work week shall be limited to 5:00 AM Monday through 5:00 PM Friday. No work on weekends or legal holidays shall be permitted without prior approval of the Forest Service.

i. Construction shall not occur within the wetted perimeter of live streams during the months of October through April annually, without prior approval.

ii. The Forest Service reserves the right to stop work in case of extreme weather, fire danger, or saturated soil conditions.

Trail Bridge installation time frames:

C. Preconstruction Meetings Prior to the start of any on site construction activities (each bridge), the Design-Build contractor shall hold a preconstruction meeting near the vicinity of the project. The meeting schedule and location shall be coordinated and approved by the Government. As a minimum the Design-Builder shall discuss the following items.

i. Identify the full time construction superintendent.

ii. Safety officer and general safety provisions

iii. Review of the construction schedule.

iv. Sub-contractors, if any

v. Construction staging.

vi. Traffic control.

vii. Access to site

viii. Review of key items in the plans and specifications.

ix. Erosion control methodologies.

x. Additional items necessary for project coordination.

D. Progress Meetings

Throughout the course of the Project, the Design-Build contractor shall hold progress meetings at least every month unless more frequent meetings are required by the Contracting Officer. As a minimum, the following items shall be discussed.

i. Review of the project schedule.

ii. Review of the submittal log and submittals in general.

iii. Review of the upcoming work.

iv. Discussion of upcoming progress payment.

v. Certified payrolls

vi. Additional items necessary for project coordination.

E. Construction Equipment

Construction equipment and vehicles used off-highway shall be washed clean of excess debris and shall be free of soil, plant parts, and weed seeds and shall be inspected and approved by the Forest Service prior to use on the project. If the vehicles leave the NRA boundary during the construction process the equipment must be rewashed and approved again by the Forest Service COR.

F. Disposal of Removed Bridges Unless designated for salvage, removed structures and obstructions become the property of the Design-Builder and shall be disposed legally off National Forest System Land.

G. Government Inspections

The Forest Service or its designee will inspect the work at any time for the benefit of the Government and may reject any work or material found not in compliance with contract requirements.

9. Construction/Demolition Access Approved construction access to the bridge sites have been predetermined by the Forest Service.

1.) Access to the trail bridge is limited by ATV only on the following sites: N/S 6, N/S 24, N/S 25, and N/S 25.5. See attached maps. Additional equipment shall be submitted in writing for approval.

2.) The Contractor shall submit proposed access routes in writing and approved by the COR. See attached maps for recommended routes.

Road access with a short walk

Road access with a short walk

Road access with a short walk

Road access with a short walk

10. Construction Storage If structures are not installed immediately upon delivery to the project site the contractor shall provide appropriate equipment and labor necessary to unload and stack, support, and store all material at the delivery point designated by the Forest Service COR. Storage for materials and equipment are available in two unsecured locations. For bridges to be installed in Kentucky, equipment and materials may be stored at 457 Maintenance Road, Golden Pond, Kentucky 42211. For bridges that are to be installed in Tennessee, deliveries and storage can be located at Brandon Springs Group Camp.

Any impacts associated with the utilization of assembly /storage site is the responsibility of the contractor to rehabilitate after use with an approved seed mixture or replacement of displaced stone.

11. Required Standard Specifications and Special Project Specifications

The following specifications are required for construction. Additional specifications may be added during the design phase.

Forest Service Specifications for Construction of Roads and Bridges

Section 106 - Measurement and Payment

Section 201 - Clearing and Grubbing

Section 206 - Structural Excavation for Major Structures

Section 552 - Structural Concrete

Section 554 - Reinforcing Steel

Standard Specifications for Construction and Maintenance of Trails

Section 904 - Maintenance for Traffic

Section 907 - Quality Assurance and Quantity Measurement

Section 908 - Staking, Flagging, and Cleanup

Section 911 - Clearing and Grubbing

Section 916 - Removal of Structures and Obstructions

Section 955 - Seeding and Mulching

12. Special Project Specifications Section 201.5 - Clearing and Grubbing

A(4) add the following requirements to the end of the first paragraph.

a. The cutting, falling, and or grubbing of several trees at the abutment locations, along the approach route of the trail to the bridge sites may be necessary. Trees shall be felled, cut up and scattered in a manner and position so as not to create a future hazard to the bridge during typical storm events, and high water levels.

Section 557 - Timber Structure

See attached document.

Section 904 - Maintenance for Traffic

904 d the following requirements to the end of the first paragraph.

b. Trail closures are the responsibility of the contractor

c. The contractor shall post signs stating “Trail closed for Bridge Installation”.

d. The contractor shall notify the Forest Service prior to closing any portion of a trail.

Section 907 - Quality Assurance and Quantity Measurement

907.02 Certification and Measurements

(a) Offsite-Produced Materials. Add the following requirements to the end of the first paragraph.

A.

Submittals as required shall be submitted to the COR by the Contractor.

B.

Construction Schedule - A proposed schedule of work for the project construction shall be submitted to the COR for approval before starting construction.

C.

The Contractor shall be required to furnish submittals on items he intends to use other than the brand names listed in the specifications. Design modifications to accommodate these items will be the responsibility of the Contractor and no additional compensation shall be allowed for those modifications. Submittals shall be made within fifteen (15) days prior to commencing any work that relates to the respective submittal. Submittals shall include the following:

1.

Product name and model number

2.

Manufacturer

3.

Product description

4.

Technical data

5.

Warranty

Section 908 - Staking, Flagging, and Cleanup

908.02 General.

Replace first paragraph with “Construction staking shall be the responsibility of the Contractor. Staking for any part of the work shall be approved by the COR prior to commencing, construction on that part. The Contractor shall complete the layout of the work and shall be responsible for all measurements that may be required for the execution of the work. Construction staking shall include the abutments, bridge location, and specified trail approaches for construction.

Section 955 - Seeding and Mulching

Add the following

955.02 Seed.

Seed Mixture and application requirements shall be provided by Government.

Final specifications shall be formatted for 8.5”x 11” sheets and shall be Microsoft Word 2007 compatible and fully functional.

13. Measurement and Payment A. The method of measurement for determining final payment for each pay item shall be based on Lump Sum Quantities. See the Schedule of Items.

i. Do not measure directly.

ii. The bid amount is complete payment for all work described in the contract necessary to complete the work for that item.

iii. Progress payment may be made based on a percentage of work completed and approved.

iv. Progress payment does not imply acceptance.

B. The completed and accepted design will be paid for at the contract lump sum price, which will be full compensation for the survey, design, detailing, surface exploration, and reporting required to prepare the approved final design.

C. The completed and accepted construction will be paid for at the contract lump sum price, which will be full compensation for the work required in accordance with the approved plans, schedule of items, specifications and requirements.

Schedule of Items for Design-Build Services

Total Price

Evaluation Factors for Award Phase One

All Design Build teams responding during Phase One will be evaluated using the following evaluation criteria:

1) Past experience. The Prime Contractor’s past trail design and construction experiences shall be shown on similar projects completed over the past five years. Experience is relevant when the offeror has been confronted with the kinds of work or challenges that will be present under the contract contemplated. The offeror will be assessed by the relevant experience on the basis of its breadth and its depth. For each relevant contract or reference, the offeror shall provide

a) Name and location of the project.

b) Contact name and phone number of customer or their agent.

c) Whether the offeror was the prime contractor or a subcontractor.

d) List of subcontractors and suppliers used.

e) Brief description of project and work performed.

2) Past performance. Experience is relevant when the offeror has satisfied performance factors with customers in the past and complied with Federal, State, and local laws and regulations. The assessment of past performance will be subjective, and based mainly on the offeror’s reputation with their customers and others. Previous references will be contacted for information regarding their opinion on the following:

a) Capability, efficiency and effectiveness.

b) Performance conformed to the terms and conditions of the contract.

c) Reasonableness and cooperation during performance.

d) Commitment to quality work and timely completion. Offerors with no past performance will be rated as “Neutral” in this category and not necessarily be rejected.

3) Staffing. Provide names and titles of key personnel to be assigned to the project, i.e. Design Engineer, Structural Engineer, Project manager, Project Superintendent, project Foreman, and Quality Control Inspector. The key personnel shall be shown in an organization chart relative to each person’s role. Indicate the qualifications of key personnel listed, showing at a minimum their experience and education.

4) Quality Control and Quality Assurance Plan. Submit a proposed quality control and quality assurance plan for the project, which shall include a minimum all testing and inspections required in the contract. The quality control and quality assurance plan shall also include, but not be limited to, all supplier and plant inspection companies, including their responsibilities.

5) Project Schedule. A proposed schedule shall be included with the offer which shall include, but not be limited to, submission of preliminary design packages, final design packages, construction startup and schedule.

Phase Two

The highest rated offerors from Phase One will be selected to submit Phase Two proposals. The competitive range will not exceed five unless the Contracting Officer determines that a number greater than five is in the government’s best interest. The Government will notify those offerors that did not make the competitive range and will not be considered for further evaluations. Those firms making the competitive range will be sent a Request for Proposal and evaluated to determine best value on the following factors:

1) Conceptual site plans and designs.

2) Sustainability

Price (Phase Two)

Price proposals will be evaluated after evaluations of the technical proposals. Each price proposal will be evaluated to determine its reasonableness for the effort proposed and to determine the demonstrated understanding of the level of effort needed to successfully complete the project. Results of the price proposal evaluation, along with the results of the technical evaluation, will be the basis for the award decisions.

The Government reserves the right to negotiate with any or all offers or award without discussion and negotiations on this phase of the solicitation to the offeror submitting the best value. Cost for submission of price and technical proposals will not be compensated.

AWARD DETERMINATION

Award will be made to that offeror whose proposal is (1) technically acceptable and (2) technical/cost relationship is the most advantageous to the Government. Evaluation factors other than price, when combined, are approximately equal to price in the award decision. The critical factor in making any cost/technical trade-off is not the spread between the technical ratings, but rather, the significance of that difference. The significance of the spread of ratings will be determined on the basis of what the difference might mean in terms of the performance and what it would cost the Government to take advantage of it. Award may not necessarily be made for technical capabilities that would appear to exceed those needed for the successful performance of the work. The Government reserves the right to make cost/technical tradeoffs that are in the best interest of and advantageous to the Government.

Award may be made without further discussions. Offers should be submitted initially on the most favorable terms, from a price and technical standpoint, which the Contractor can submit to the Government. The Government may, after evaluation of the proposals, conduct further oral or written discussions as appropriate, with all offerors whose proposals are within the competitive range. Failure to provide all information requested by the RFP may render the proposal as unacceptable.