B.08.02-Att 1 Statement of Work.pdf

US Army Corps of Engineers Europe District

APO AE 09049

Ar154

Statement of Work Project Number:

AFR20-29-BEN FY20

Boat Ramp

Cotonou, Benin

Prepared by:

Design Section

Engineering Branch 6 May 2020

01 10 10 Statement of Work Boat Ramp – Cotonou, Benin

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SECTION 01 10 10

STATEMENT OF WORK

SECTION TABLE OF CONTENTS:

1 GENERAL

2 CIVIL AND GEOTECHNICAL

3 ARCHITECTURAL - Not Applicable

4 STRUCTURAL

5 ELECTRICAL & COMMUNICATIONS - Not Applicable 6 MECHANICAL - Not Applicable 7 FIRE PROTECTION - Not Applicable 8 SUSTAINABILITY - Not Applicable 9 CYBERSECURITY - Not Applicable

ATTACHMENTS

Att. # 1 Location Map Att. # 2 Conceptual Site Plan Att. # 3 Structural Calculations Guideline Att. # 4 Boat Specifications Att. # 5 Site Photos

1.0 GENERAL

1.1 PROJECT DESCRIPTION

The Request for Proposal (RFP) provides parameters for a design-build project for new Boat Ramp in Cotonou, Benin; Latitude 6°21'29.8"N, Longitude 2°26'26.5"E (See Attachment#1-Location Map.)

This project is for a single lane small craft launch ramp to support launch and recovery of a 38 foot (12 meter) patrol boat to support counter-drug activities and provide access to the newly constructed boat maintenance facility.

The project includes the following general items of work, detailed requirements are contained elsewhere in this Statement of Work:

a. Demolition of existing boat ramp

b. Construct of new boat ramp

c. Construction of access roads around boat maintenance facility

d. Stabilize concrete slab by filling void space with either sand or cement slurry, exposed face of void must be armored with grout or cement grouted riprap.

e. Construct retaining wall adjacent to boat ramp

1.2 GENERAL REQUIREMENTS

The Contractor must deliver fully functional, turnkey type boat ramp as described in this document. This work includes - but is not limited to - design, demolition, fabrication, delivery, installation, construction, and site work. The general work items must be permanent construction.

The work items in this project must be complete and usable to meet codes and technical and functional requirements per this Statement of Work (SOW). The proposal price must include all design, calculations, approvals, certificates, fees, labor, material, equipment, direct overhead, indirect overhead, general and administrative expenses (G&A) and general conditions to complete this project as described in the SOW.

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These design and product requirements are minimum requisites. Compliance with the provisions of this section by subcontractors is the responsibility of the Contractor.

1.2.1 BASE ITEMS AND OPTIONAL ITEMS

This Statement of Work addresses the technical requirements necessary to complete all work associated with this project. For information and requirements regarding the allocation of pricing between elements of the work, refer to Specification Section 01 22 00 PRICE AND PAYMENT PROCEDURES. The Schedule of Items identifies the breakdown between the individual base items and optional items for all work identified in this Statement of Work, associated drawings, and attachments. All work as described in these documents is included in either the Base or Optional Items. Consider all items not specifically identified in the Optional Items as part of the Base Items.

1.3 FUNCTIONAL AREAS

Design and construct the boat ramp as a new concrete ramp to launch 38 foot patrol vessels from a trailer into the body of water.

Provide the following:

1.3.1 Boat Ramp

Minimum 6 M wide and approximately 24 M long boat ramp Approximately 46 M long retaining wall to the North of the boat ramp Approximately 220 M of New access road (as seen in attachment #2) Approximately 33 M of rip rap with sand or slurry infill of void space beneath the existing concrete slab approximate area 5 M by 33 M and 1 M deep

1.4 SUBMITTALS

Designer of Record approval is required for submittals with a “DA” designation.

Government approval is required for submittals with a “G” or “GA” designation.

Submittals having an “FIO” designation are for Contractor Quality Control approval. Submit the following in accordance with Section 01 33 00 SUBMITTAL

PROCEDURES:

SD-01 Preconstruction Submittals

Demolition Plan; G

Sequencing Plan; G

SD-05 Design Data

65% Pre-Final Design; DA/GA

95% Final Design; DA/GA

100% Corrected Final Design; DA/GA

SD-06 Test Reports

Test Results and Reports; FIO

1.4.1 DESIGN SUBMITTALS

Provide a complete design package at each milestone, as described in Specification Section 01 33 16 DESIGN AFTER AWARD. The milestones for this project are

7-May-20 Page 4 of 25 indicated above in Section 1.4 SUBMITTALS. The specific requirements of each milestone are described in each discipline-specific section of this Specification.

Submit all documents in electronic format (.pdf for text and calculations, .pdf and .dwg (AutoCAD, latest version) for drawings). See Specification 01 33 00 SUBMITTAL PROCEDURES for additional information.

1.4.2 TEST REPORTS

Provide all test results and reports identified in this SOW to the Government as a submittal in accordance with Specification Section 01 33 00 SUBMITTAL PROCEDURES.

Submittals will be considered for information only (FIO) submittals unless specifically identified as a submittal requiring government approval. Coordinate with the KO after award for the specific items to be included in the submittal register.

1.5 MATERIALS AND EQUIPMENT

Materials and products used must be durable, heavy duty, industry standard. The equipment must be the manufacturer’s standard quality and must be compatible with all other equipment and materials within the system or assembly. Equipment and materials must include all connections and accessories necessary to ensure operability and correct installation according to manufacturer’s requirements.

Provide a nameplate secured to each major piece of equipment. Each nameplate must have the manufacturer’s name, address, contact information, type or style, model or serial number, and catalog number. The definition of a “major piece of equipment” is at the discretion of the KO.

1.5.1 LIFE-SPAN

Construction must have an expected life span of 25 years.

1.5.2 MAINTAINABILITY

Provide low maintenance materials and systems appropriate for the project climate and location.

1.5.3 OPERABILITY

Systems (including but not limited to architectural, electrical, communications, and mechanical systems) must be simple to operate and easy to maintain.

1.5.4 STANDARDIZATION

Provide standardized materials, products, equipment, and systems to minimize the requirements for replacement parts, storage facilities, and service requirements.

1.6 DESIGN DIMENSIONS

Develop the design using the metric system.

1.7 DESIGN CRITERIA

Project design, site facilities, utility systems and material standards must be in accordance with Host Nation and US building codes and following codes / criteria (current versions as of the date of RFP, unless otherwise indicated):

In the absence of Host Nation building codes, use of UFC 4-152-01 Design: Piers and Wharves, California Department of Boating and Waterways Boating Facilities Division Layout, Design and Construction Handbook for Small Craft Boat Launching Facilities the International Building Code (IBC) and/or the U.S./European codes and technical standards, and regulations referenced in this RFP.

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While this RFP references various source standards and specifications, all design documents must meet Host Nation codes and requirements. It is the designer's responsibility to demonstrate that the Host Nation standard is equal to the cited standard or specifications being supplanted. Apply the more restrictive standards when conflicts arise between the requirements of this RFP and any referenced or other applicable codes, standards or regulations. If equivalency cannot be met, use the more stringent requirement and quote both codes verbatim in correspondence to the KO. The designer is responsible to determine the required material and execution standards where specific standards are not indicated.

Provide an electronic copy of the local Host Nation standards and building codes in their original language as related to facility design and construction.

1.8 DESIGN CONFERENCES AND MEETINGS

The Contractor and the entire design team are required to participate in a design review conference for each design submittal. All design review conferences must be held via teleconference or be reviewed and comments resolved via email.

The Contractor is responsible for taking meeting minutes during each design review conference and submitting to the KO for information and approval.

The Contractor is responsible for evaluating all Government comments prior to each design review conference. The Contractor is responsible for resolving all Government comments from each design phase. The Contractor must provide annotated responses to each design review comment with the subsequent design submittal packages. Construction may not begin until all Government comments from all design phases have been resolved.

1.9 SPECIAL CONSTRUCTION REQUIREMENTS

1.9.1 DEMOLITION

The Contractor is responsible for all required demolition as indicated in this scope.

Submit a Demolition Plan to be tracked via the submittal register indicating all demolition, abatement, and disposal methods.

1.9.1.2 DEMOLITION AND DISPOSAL OF HAZARDOUS MATERIAL

The Contractor is responsible to survey the site and determine if hazardous materials exist. If hazardous materials are found to exist, immediately notify the KO, and provide the KO with the results of the relevant sampling and testing.

Provide the hazardous material report to the KO no later than 30 days after Notice to Proceed (NTP) for information and approval.

END OF SECTION

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2.0 CIVIL AND GEOTECHNICAL

Provide and perform civil engineering design and construction services as required to provide a complete, accessible, functional and usable project. The Contractor is required to extensively coordinate civil design and construction work with the scope of the other disciplines described in this SOW.

2.1 SCOPE SUMMARY

Civil works for this project include, but are not limited to, site survey, geotechnical investigation, site layout, demolition, earthwork, and landscaping.

Refer to the bid schedule for which of these are base bid or optional.

2.2 EXISTING CONDITIONS

2.2.1 TOPOGRAPHY

There is no known topographic survey for the project site. The existing site contains buildings, pavement, utilities, fences, and vegetation as shown on Attachment #2 – Conceptual Site Plan. The existing information shown on Attachment #2 was compiled from Google Earth, site photos, and the boat maintenance facility design drawings.

Photos of the site can be found in Attachment #5 – Site Photos.

2.2.2 UTILITIES

There is an existing box-culvert sanitary sewer discharge located immediately to the north of the new boat maintenance facility (constructed in 2018/2019). Non-potable water, water, and sanitary sewer lines are also present at the site. Other utility information at the site is unknown. The Contractor must verify all utility locations (surface and subsurface) in the field prior to the first design submittal.

2.2.3 GEOTECHNICAL

There is no geotechnical information available for the project site. The Contractor must perform a Geotechnical Investigation and submit a Geotechnical Report as part of the Design Analysis.

2.2.4 ENVIRONMENTAL

There are no known environmental protection areas or archeological preservation areas on the project site. There is no prior knowledge of any hazardous or contaminated materials in the site’s soil or pavement.

2.2.5 EXISTING CONDITIONS INVESTIGATION

Prior to bid, investigate the general and local conditions which can affect the work and/or its cost, including but not limited to:

a. Weather, river stages, tides, or similar physical conditions at the site.

b. Surface and subsurface materials or obstacles to be encountered insofar as this information is reasonably ascertainable from an inspection of the site and due diligence research of as-built drawings, geotechnical reports, environmental reports, and publicly available information on the site.

c. Mobilization and staging constraints.

2.3 DESIGN SUBMITTALS

Provide civil design submittals in accordance with RFP Section 01 33 16, DESIGN AFTER AWARD and in compliance with SOW Section 1.0 – GENERAL.

65% Design Submittal:

a. Pre-Final Design Analysis of civil features.

b. Final Site Survey (include in the Design Analysis).

c. Final Geotechnical Report (include in the Design Analysis).

d. Final Existing Conditions Plan.

e. Pre-Final Site Layout Plans – Indicate existing and proposed civil features.

Include other disciplines’ features (faded back) that affect the civil design (buildings, mechanical structures, electrical utilities, etc.).

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f. Pre-Final Grading Plans, Profiles, Cross Sections, and Details. Include contours, finish floor elevations, and retaining walls. Include spot grades and slopes in Grading Plan. Include retaining wall profiles, cross sections, and details. Include erosion control design.

g. Pre-Final Pavement Plans, Profiles, Cross Sections, and Details.

h. Pre-Final Drainage (storm) Plans, Profiles, Cross Sections, and Details.

i. Pre-final Grouting Plans including injection point layouts.

j. Preliminary Landscape Plan and Details.

k. Preliminary Civil Specifications.

95% Design Submittal:

Update all items from the 65% Design Submittal to 95% (Final) Design. Incorporate all 65% design comments.

100% Submittal:

The 100% Submittal provides a complete and final set of contract documents ready for construction. Update all Final submittals from 95% to a corrected Final submittal.

Address all previous government review comments before submitting.

2.3.1 DESIGN ANALYSIS

Provide a Design Analysis for all Civil features that documents significant design choices and substantiates design compliance with contract requirements, applicable codes and standards. Documentation includes narrative, calculations, photographs, sketches, and catalog cut sheets. Reference all applicable regulations, standards, and criteria for the design. Reference sources are subject to Government approval.

Provide design assumptions. For design choices, discuss alternative systems considered, and provide rationale for the selected alternative.

The Design Analysis includes but is not limited to:

a. Discussion of Site Layout constraints and design decisions, including but not limited to, land use, vehicle and pedestrian access, orientation of features on-site, setbacks from site features, minimizing earthwork, and minimizing tree removal.

b. Discussion of Demolition constraints and design decisions. Include discussion on how access will be provided during construction, and how each utility will be maintained and operated during construction.

c. Discussion of Earthwork and Site Grading constraints and design decisions.

Provide cut and fill calculations. Provide retaining wall calculations. Provide slope stability calculations for slopes steeper than 2H:1V or slopes supporting proposed structures. Include pertinent geotechnical information that affects earthwork.

d. Discussion of Storm drainage constraints and design decisions.

e. Discussion of Pavement constraints and design decisions. Provide the design vehicle(s) specifications. Demonstrate the turning path of the largest anticipated vehicle(s) in the most constrained situations on the site plans.

Provide vehicular circulation patterns using Autoturn or equivalent method.

Provide calculations for the pavement section. Provide design traffic calculations and assumptions. Include pertinent geotechnical information that affects the pavement design.

f. Discussion of void filling approach and associated grouting plans. Provide details regarding injection point layouts, grout mix selection, grouting sequences, and measures taken to avoid excessive grout use (e.g. injection point take cut-off volumes and pressures).

g. Discussion of Landscaping constraints and design decisions.

h. Site Survey as an appendix.

i. Geotechnical Investigation and Report as an appendix.

2.3.2 DESIGN DRAWINGS

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Provide civil design drawings of sufficient detail to address the requirements of each design submittal. Civil drawings include plans, profiles, cross sections, and details of civil features for the project. Civil drawings also include temporary construction plans/methods that affect the design and construction of the project.

These temporary plans include mobilization, traffic control, erosion control, dewatering, shoring, construction sequence, etc. Design drawings include all necessary information (labeling, dimensioning, legend, details, notes, etc.) to allow for complete understanding and constructability of all proposed features.

Provide comprehensible differentiation between features that are proposed, existing, future, or proposed to be demolished by use of appropriate choice of line styles, line weights, and/or colors. Provide grout injection point layout drawings that clearly identify primary and secondary injection points. Develop an injection point naming convention that clearly identifies injection point locations and sequences.

Reference USACE A/E/C Graphics Standard for graphic requirements.

2.3.3 SPECIFICATIONS

Provide civil specifications of sufficient detail to address the requirements of each design submittal. Specifications, when combined with the design drawings, allow for complete understanding and constructability of all proposed Civil features.

2.4 DESIGN CRITERIA

Provide civil design in accordance with Host Nation codes. In the absence of Host Nation codes, use the latest release of the International Building Code (IBC) and the following codes and technical standards:

a. Uniform Facility Criteria (UFC) 3-201-01, Civil Engineering

b. UFC 3-220-01, Geotechnical Engineering

c. USACE A/E/C Graphics Standard (ERDC/ITL TR-12-1)

2.5 GEOTECHNICAL INVESTIGATION AND REPORT

Perform a geotechnical investigation and assessment of the project site to determine the subsurface conditions and geotechnical parameters for the boat ramp foundation, grading, and bank stabilization. Perform the necessary amount of testing, borings and test pits at depths suitable for the project improvements. Include geotechnical investigation in areas where borrow material will be used. The Geotechnical work must be performed under the supervision of a professional geotechnical engineer registered with the jurisdiction having authority, and the report must be signed by the Geotechnical Engineer. In the absence of Host Nation codes, perform the geotechnical investigation and report per UFC 3-220-01, Geotechnical Engineering and

IBC.

Coordinate testing locations with the KO to avoid impact to existing utilities and facility operations. Utility locates, permits, pavement removal and vegetation clearing is the Contractor’s responsibility. Repair disturbed areas with a concrete patch in paved areas, and compacted soil in non-paved areas. The repaired area must be flush with the adjacent surface. Following restoration, stake and flag each of the hole locations with boring identification numbers. In paved areas, use white paint on the paved surface to mark hole locations. Provide a map indicating the borehole and test pit locations.

2.5.1 REPORT

Include, as a minimum, the following information:

a. Description of field work completed and equipment used; names, signatures and stamps of licensed professionals involved; name of drilling company.

b. A description of site subsurface conditions, regional geology, and seismic conditions at the site.

c. Site map of borehole and test pit locations.

d. High resolution color digital photographs of each borehole and test pit location.

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e. Test pit logs with classification of all subsurface materials. The logs must distinguish fill materials from native materials, include all in‐situ test results, and include groundwater depth information, if groundwater is encountered. Distinguish between bedrock and rock boulders.

f. Reports of all the field and laboratory testing.

g. Recommendations for allowable bearing capacity, expected settlement, type of foundation, minimum footing and grade beam dimensions, lateral earth pressure parameters, and minimum depth of foundation for footing and grade beams.

h. Recommendations for preparation, placement, and compaction of onsite soils, borrow material, soil replacement, soil amendment/treatment, structural fill, and topsoil. Include dewatering and temporary retaining structure needs.

i. Soil Resistivity.

j. Recommendations for pavement design and construction.

k. Calculations to support conclusions and recommendations

2.5.2 DESIGN DRAWINGS AND SPECIFICATIONS

On the design drawings and/or specifications, include geotechnical information that affect the design of the project, including but is not limited to, boring locations, boring logs, groundwater depths, and any details that convey requirements for site preparation.

Perform geotechnical work required for construction (i.e. compaction tests, inspection of structure foundation excavations). In the absence of Host Nation standards, perform the geotechnical scope of work per UFC 3-220-01, Geotechnical Engineering and IBC.

2.6 SITE SURVEY

Conduct and provide a topographic survey from a licensed surveyor that includes all existing site information needed to design and construct the project. Survey must be conducted prior to the first design submittal. Include x, y, and z coordinates to the nearest 0.005 meters, dimensions, material, and basic characteristics of all features within the project site limits, as well as all features outside of the project site limits that will affect the design and construction of the project.

Research record drawings to obtain utility and pavement information that is not visible from the surface. Provide notes indicating the sources and any limitations or assumptions of the data. Provide a copy of the survey in CAD, in addition to the paper/electronic requirements of the Design Analysis. Locate and show on the topographic survey the following information:

a. Property boundary, public right of way, and easements. Include the address numbers, street names, and easement records.

b. Survey monuments. Include description.

c. Spot elevations covering the entire survey limits showing high points, low points, grade changes, and at sufficient intervals to represent the general character of the terrain.

d. Contours in intervals of 0.25 meters.

e. Buildings and other miscellaneous structures. Provide finish floor elevations.

f. Pavements. Include pavement type, thicknesses, joint patterns, and pavement markings. Include top of curb and gutter elevations.

g. Surface Drainage Features. Indicate normal water level for water bodies.

h. Tidal Shoreline. Note water elevation, time of day, date, and tidal condition at time of survey. Indicate normal high/low water elevations referenced to the datum used.

i. Utility lines and structures. Include rim elevations and invert elevations for utility structures; identification of lines as underground or aboveground;

pipe sizes and materials.

j. Fences. Include height, material, direction of outrigger, gate locations and types.

k. Signs. Include sign text.

l. Railroads.

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m. Trees/Woods: In wooded areas that trees are to be protected, locate outside drip line of wooded area, including general density and type of trees. For wooded areas with proposed tree removal, identify trees per Host Nation permitting requirements. Where selective clearing will be proposed, locate trees over 150 millimeter diameter at chest height, and include tree species, diameter at chest height, and dripline diameter.

n. Geotechnical boring locations.

o. Locate environmentally sensitive areas (determined and marked by others).

p. North arrow and scale of drawing.

q. Legend depicting the symbols and abbreviations used on the drawing.

r. Horizontal and vertical coordinate systems, date of survey, licensed surveyor name and license number.

The site survey shall also capture bottom and top elevations of the void to be filled beneath the existing concrete slab. Enough survey points must be collected to calculate an approximate volume of the void to be filled.

Site information provided to the Contractor by the Government is not to be considered accurate Site Survey information. Utility field locates and as-built research are the responsibility of the Contractor.

Upon completion of construction, update the original survey with an As-built survey of the site as constructed, including underground utility locations and depths.

Submit the As-built survey to the KO for approval.

Reference UFC 3-201-01, Civil Engineering, Section 2-2.2-SURVEYING for survey requirements. Use the Universal Transverse Mercator (UTM) coordinate system. The vertical coordinate system must be based on sea level.

2.7 SITE LAYOUT

Locate the proposed boat ramp and access road as indicated on Attachment #2 – Conceptual Site Plan. Amend the site layout as determined by the site-specific constraints, the owner’s preferences, accessibility, future expansion, and opportunities that are identified and evaluated as part of the Contractor’s scope of work.

The Contractor is responsible for all aspects of the project whether they are shown on the conceptual plan or not.

2.8 DEMOLITION

Remove existing structures, utilities, pavement, vegetation, and any other features to construct the proposed boat ramp. Remove trees with driplines within the footprint of the proposed improvements. Provide straight, neat sawcuts at limits of pavement removal. All contaminated soils discovered require special testing and disposal per Host Nation requirements.

2.8.1 CONSTRUCTION LIMITS

Do not disturb the project site beyond necessary for installation of proposed construction. Do not disturb any areas past the site’s property line. Show demolition work and limits of disturbance in the drawings. Stake-out the limits of disturbance on-site with temporary fencing before beginning construction.

2.8.2 ITEMS TO REMAIN IN PLACE WITHIN CONSTRUCTION LIMITS

Take necessary precautions to avoid damage to existing items to remain in place, to be reused, or to remain the property of the Government. Repair or replace damaged items as approved by the KO. Construct and maintain shoring, bracing, and supports as required. Ensure that structural elements are not overloaded. Provide new supports and reinforcement for existing construction weakened by demolition, deconstruction, https://en.wikipedia.org/wiki/Universal_Transverse_Mercator_coordinate_system https://en.wikipedia.org/wiki/Universal_Transverse_Mercator_coordinate_system

7-May-20 Page 11 of 25 or removal work. Repairs, reinforcement, or structural replacement require approval by the KO prior to performing said work.

2.8.3 TREES

Protect trees which might be damaged during construction, with a 1.8 meter high fence around the dripline of the tree(s), which is assumed to be the extent of the tree’s roots. Trees are defined as larger than 150mm diameter at 1.3 meters above existing grade. Mitigate for tree removal per Host Nation requirements.

2.8.4 UTILITIES

Any existing utilities encountered that are impacted by this project must be protected, or relocated if protection is not feasible. Remove existing and abandoned utilities under or within 3.0 m of the foundation of any proposed facility or building foundation. Reroute existing utilities to remain in accordance with SOW Section 2.10-UTILITIES. Abandoned utilities must be removed up to the utility main (or next utility main junction) and capped. Manholes or underground structures to be abandoned must be removed to a minimum depth of 50 centimeters below finish grade.

Fill abandoned manhole or structure per Section 2.9-EARTHWORK requirements.

2.8.5 DUST, DEBRIS, AND EROSION CONTROL

Prevent the spread of dust, debris, and erosion from the project site. Install erosion control measures before beginning construction. Sweep pavements as often as necessary to control the spread of debris. Do not use water if it results in hazardous or objectionable conditions such as, but not limited to, ice, flooding, erosion, or pollution. Remove snow, dust, dirt, and debris from work areas daily.

Remove and transport the debris in a manner that prevents spillage on streets or adjacent areas. Apply local regulations regarding hauling and disposal.

2.9 EARTHWORK

Perform all earth work necessary for the installation of the proposed improvements.

2.9.1 PLANS AND SPECIFICATIONS

Define earthwork requirements in the plans and specifications. Include requirements for satisfactory material, borrow material, structural fill, topsoil, replacement and improvement of on-site soils, soil compaction (for paving and landscaped areas), maximum lift depths, density testing frequency, maximum temporary and permanent slopes, and engineered support systems. The earthwork requirements must not conflict with the recommendations in the Contractor-provided Geotechnical Report.

2.9.2 UNEXPLODED ORDNANCE (UXO) CLEARANCE

UXO survey is not required.

2.9.3 CONTAMINATED SOIL

Inspect and test all soil according to Host Nation requirements. If hazardous materials are discovered, cease excavation, secure the area, and notify the KO for further guidance.

2.9.4 CULTURAL RESOURCES

Cultural resources, such as archaeological remains, may be uncovered during excavation operations. If suspected cultural remains are found, cease excavation, secure the area, and notify the KO for further guidance.

2.9.5 TOPSOIL

Remove and save topsoil (approximately first 20 centimeters of excavation). Separate out subsoil, brush, litter, weeds, roots, stones larger than 25 mm in diameter, and other materials that would interfere with planting and maintenance operations. When restoring the site to finish grade, place topsoil back in excavated areas that do not include proposed paving or structures.

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2.9.6 SATISFACTORY MATERIAL

Excavated material (below topsoil), if satisfactory for reuse per the Contractor’s Geotechnical Engineer, may be used on the project site where fill is required.

Unsatisfactory material, and surplus excavated material not required for fill, must be disposed of offsite, and is the responsibility of the Contractor. Borrow material may be required for construction from sources off site. Borrow materials are to be free of hazardous materials and contaminants. Any soil brought in from off-site sources must be certified clean.

2.9.7 BACKFILL COMPACTION

In the absence of Host Nation requirements and geotechnical recommendations, fill and backfill must be placed in layers of 20 centimeters loose thickness and compacted to a minimum 95% of the maximum dry density as determined by Host Nation test method equivalent to ASTM D-1557 (Modified Proctor test). Provide density tests on all lifts at a frequency of 1 test per 40 square meters for the boat ramp, and 1 test per 30 meters of road and utility trench. Round up to nearest whole number (i.e. a 25 square meter foundation requires one test). The location of all tests must be selected by the Contractor’s geotechnical engineer, and copies of all test results must be furnished to the KO. The boat ramp subgrade must be inspected and approved by the Contractor’s Geotechnical Engineer prior to placing concrete. Repair earthwork areas as recommended by the Contractor’s Geotechnical Engineer, and approved by the

KO.

2.9.8 ENGINEERED SOIL SUPPORT SYSTEMS

Provide engineered soil support systems (i.e. shoring) as required for the construction of the proposed improvements. The Contractor is responsible for all dewatering necessary for earthwork.

2.9.9 SITE GRADING

Provide site grading that directs storm water runoff away from buildings and structures either by drainage systems or by grading as follows:

a. Finished grades of earth/grass/gravel surfaces adjacent to the boat ramp, buildings, or other structures must slope away from all exterior edges with a minimum slope of 5% for the first 2 meters.

b. Finished grades of paved surfaces adjacent to the boat ramp, buildings, or other structures must slope away from all exterior edges with a minimum slope of 2% for the first 2 meters.

c. Finished grades must not create stagnating water or ponding anywhere on the project site, nor create ponding on adjacent properties. Provide storm improvements if ponding is unavoidable.

The Contractor must limit proposed landscape slopes to a maximum 4H:1V for grass areas requiring mowing and 2H:1V for non-grass areas, which require non-erodible surface (i.e. rock, shrubs with mulch).

2.9.10 RETAINING WALLS

Provide a retaining wall between the east side of the boat ramp and the water, as shown in Attachment #2 – Conceptual Site Plan. Match retaining wall aesthetics to that of nearby buildings or structures.

In the absence of Host Nation standards, provide the retaining wall per UFC 3-220- 01, Geotechnical Engineering and STRUCTURAL Section 4.0 requirements

2.10 UTILITIES

Protect all existing utilities within the project boundary, including but not limited to, sanitary sewer, water supply, storm drainage, electrical, communications, gas, liquid fuel, and heat. Damaged utilities shall be repaired or replaced at the Contractor’s expense.

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Existing utilities that conflict with the proposed work shall be relocated. Utility main alignments must be at least 3.0 meters from the boat ramp or building foundations, except for building connections. Provide horizontal and vertical separation between utilities for rehabilitation, maintenance, repair or replacement.

Provide utility line depths, bedding, and backfill as required by applicable requirements and geotechnical recommendations. Minimum cover over pipes is 0.6 meters or sufficient to support imposed dead and live loads for the pipe materials used;

whichever is more stringent. Place plastic warning tape along the route of the buried pipe after installation at a height of 0.3 meters above the pipe.

Coordinate all required installation, relocation, improvement and protection of utilities held by third party (e.g. public or private utility). This includes coordination of any work to be performed by the utility owner. Choice of materials and products for utility installation must be coordinated with the utility owner (customer or third party) to ensure proper integration and compliance with existing systems and allow for easy maintenance and repair of the utilities in the future.

Provide utility materials per IBC requirements. Provide corrosion protection for utilities that provides the minimum life expectancy specified in GENERAL Section

1.0. Any piping or equipment exposed to sunlight must be coated with protective coatings suitable for UV exposure with a minimum expected coating life of 10 years before recoating.

2.10.1 STORM SYSTEM

Provide a gravity storm drainage system to direct runoff away from improvements, eliminate ponding, and prevent erosion. A pump system is not allowed. In the absence of Host Nation standards, design the storm drainage system per UFC 3-201-01, Civil Engineering Chapter 3-Storm Drainage Systems.

2.11 PAVEMENT

Provide site access to the proposed boat ramp. Provide geometric layout of the paved areas to allow for the design vehicles to access the site features and exit the site safely. The boat ramp and access road must allow for launching and retrieving SAFE 38 Full Cabin watercraft (see Attachment #4 – Boat Specifications). Proposed pavements for the project include:

a. 6 meter (20 feet) wide and 24.5 meter (80 feet) long cast-in-place Portland

Cement Concrete (PCC) boat ramp. If cast-in-place construction is not feasible, the use of pre-cast concrete sections is acceptable. The boat ramp shall have a uniform slope between 12% and 15%.

b. Construction a PCC access road connecting the proposed boat ramp to the newly construction boat maintenance facility access road. The access road must allow two-way traffic and shall circle the existing boat maintenance facility. A proposed access road is shown on Attachment #2 – Conceptual Site Plan.

In the absence of Host Nation standards, design pavements per UFC 3-201-01, Civil Engineering.

For PCC, reference SOW Section 4.0 - STRUCTURAL for concrete requirements. Perform subgrade tests for all pavements as described in Section 2.9 - EARTHWORK. The location of all tests must be selected by the Contractor’s Geotechnical Engineer, and copies of all test results must be furnished to the KO.

2.12 SHORELINE STABILIZATION

Stabilization of the shoreline is required downstream of the proposed boat ramp location, as shown on Attachment #2 – Conceptual Site Plan. Sanitary sewer discharge has scoured and undermined the concrete slab along the shoreline, creating voids beneath the concrete surface. The existing voids threaten the stability of the concrete slab and shoreline, compromising the longevity of the proposed boat ramp.

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Provide the following stabilization measures:

a. Provide riprap, or a similar stabilization feature, along the shoreline to prevent further scouring and undermining of the concrete slab. Fill riprap voids such that flowable fill material (i.e. grout) used to fill voids beneath the adjacent concrete slab cannot penetrate the riprap.

b. Fill the voids beneath the concrete slab using pressure grouting techniques.

Provide a grouting plan, including injection point layouts, that demonstrates voids will be filled. The grouting plan shall also ensure excessive grout volumes are avoided (i.e. provide maximum grout volume limits for each injection point).

2.13 LANDSCAPING

Provide 15 centimeters of compacted gravel with a maximum particle size of 3 centimeters in areas that do not have pavement or a building within the limits of disturbance. Refer to 2.9 EARTHWORK section for minimum compaction requirements.

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3.0 ARCHITECTURAL

N/A

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4.0 STRUCTURAL

4.1 GENERAL

The Contractor must provide and perform structural engineering design and construction services as required to provide a complete, accessible, functional and usable project.

The primary structural effort of this project includes

• The design and construction of a new single lane small craft launch ramp, for 38 foot patrol boats and a minimum low water design of 4’6”

• The design and construction for bank erosion upstream of proposed boat launch area

• Design and construction of retaining wall along the bank of the boat ramp

• Other elements include but are not limited to demolition, boat ramp joints, and void filling slab stabilization.

The Contractor must have as part of his or her design team a licensed structural engineer, approved by the KO. The structural engineer’s licensure or qualifications must be submitted to the KO. The Contractor’s structural engineer is responsible for the design of any part of the marine systems.

The structural design of the boat ramp and erosion control must be in accordance with the design criteria listed in this document. They must be constructed from locally available materials. The construction must provide a minimum service life of 25 years.

4.2 APPLICABLE DESIGN CRITERIA

All Design, Safety in Construction, Materials, and Performance of Construction Services must be in accordance with current local or national Host Nation codes and standards. In case of conflicting requirements between the various elements, the more stringent criteria governs.

Any material or construction installed by the Contractor as part of this contract that does not meet the requirements of this RFP or does not meet the applicable codes and standards must be removed and replaced at the Contractor’s expense.

Structural design methods and allowable stresses or load factors for the various structural materials must be in accordance with Host Nation and US codes; 2018 International Building Code and ASCE 7-10 for structural calculations. In the absence of Host Nation codes the following codes/criteria must be used:

UFC 4-152-07 Design: Small Craft Berthing Facilities

The International Building Code (IBC)

California department of Boating and Waterways Boating

Facilities Division Layout, Design and Construction handbook for small craft boat launching facilities.

4.3 SUBMITTALS

4.3.1 DESIGN SUBMITTALS

The Contractor must provide the structural submittals after contract award in accordance with Section 01 33 00 SUBMITTAL PROCEDURES. The following documents must be submitted.

4.3.1.1 DRAWINGS

The following structural detail drawings must be provided by the Contractor as required, but must conform to the requirements of this SOW and are subject to the approval of the Contracting Officer (KO). Construction drawings must include:

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65% Design Submittal

- Preliminary Boat Ramp layout plans and profiles which provide information of ramp, shoreline protection, and bank stabilization with general information about dimensions of main elements such as ramp, wall, and void space, etc.

(min. scale 1:50)

- Formwork drawings of any proposed structural concrete elements (minimum scale 1:50),

- Reinforcement drawings (minimum scale 1:50),

- Elevations (minimum scale 1:50),

- All necessary details of the structural concrete elements (minimum scale

1:20), 95% Design Submittal

- All items from the 65% Design Submittal requirements

- Complete reinforcement drawings (min. scale 1:50)

- All necessary sections and details of the load bearing structure (min. scale

1:20)

- Shop drawings of the steel structure (min. scale 1:50)

- Detailed specifications that are typically sent to sub-contractors.

100% Submittal

- The 100% Submittal provides a complete and final set of contract documents ready for construction. All previous government review comments must have been addressed. Include all updated drawings, specifications and calculations from the 95% Submittal.

- The design criteria actually used for the structural design must be referenced in the structural notes on the drawings including but not limited to applicable codes, standards and specified material strengths.

Record Drawing Submittal

- The Record Drawing Submittal provides a complete and final set of record drawings documenting site conditions based on a survey of the final construction performed by the Contractor.

CAD files of all construction drawings and as-built drawings must be submitted in .dwg (latest AutoCAD version) and in .pdf format.

The design documents actually used for the structural design must be referenced in the structural notes on the drawings.

4.3.1.2 STRUCTURAL CALCULATIONS & DESIGN ANALYSIS

The Contractor must submit the structural calculations of all load bearing structural elements and their connections related to this RFP. The design analysis must state and list the basis of design for all project aspects and features. The design analysis and calculations must be in accordance with the enclosed NAU Engineering Guideline 01/2016 Preparation of Structural Calculations. The current local or national Host Nation codes and standards on which the structural calculation are based must be referenced in the calculations. If applicable, an electronic copy of the applicable local or national Host Nation codes must be provided. Structural calculations must be sequentially numbered for ease of referencing for all submittal stages.

4.5 STRUCTURAL DESIGN CRITERIA

Structural design methods and allowable stresses or load factors for the various structural materials must be in accordance with the Applicable Design Criteria paragraph 4.2. Requirements in the codes, specifications and industry standards

7-May-20 Page 18 of 25 are requirements of this document, unless specified otherwise. The references used for the project design and contract documents must be included in the design analysis required for this project.

4.5.1 MINIMUM STRUCTURAL DESIGN LOADS

The design loads must be determined in accordance with the codes and standards listed in the Applicable Design Criteria paragraph 4.2. For minimum value for design without an official geotechnical report us the IBC presumptive values table “Table 1806.2”.

The design load criteria specified herein are minimums; the Contractor is responsible for verifying the actual design loads for this site. If actual design loads are different than that listed herein, the Contractor must notify the KO. The Contractor should determine if special loadings must be considered and notify the KO. Any cost and/or schedule impact due to the Contractor’s failure to notify the KO of these requirements specified herein four weeks before the submittal is due must be to the Contractor’s account. Design loads must be included in the structural notes on the drawings. The minimum design load criteria for this project as follows:

4.5.1.1 DEAD LOADS

The unit weight of concrete wall. Other dead loads that should be considered are superimposed backfill and the weights of any equipment or other structures supported by the boat ramp, retaining wall, and reinforced concrete slab above the void space. Include external Water Pressure and surcharge loads from construction equipment.

4.5.1.2 FLOTATION

All loads and load case combinations must be in accordance with the codes and standards listed in the Applicable Design Criteria paragraph 4.2. Load factors for designs must be based on the applicable material design standard.

4.5.1.2 LIVE LOADS

4.5.1.2.1 LIVE LOADS

Live loads must be in accordance with the codes and standards listed in the Applicable Design Criteria paragraph 4.2 for the anticipated usage. Live loads from vehicles, refer to civil section for vehicular surcharge loads.

4.5.1.2.2 HORIZONTAL LOADS

The retaining wall must be designed to and applicable combinations of the following horizontal loads; lateral earth pressure, hydro-static pressure, wind, dynamic earth pressure, and vehicular and or construction surcharge.

In no case shall the retaining wall be designed lower than at-rest lateral earth pressure. Additionally the passive earth pressure to resist the design loads must be greater than 50% of the value.

Wind Load. Wind loads should be considered for retaining walls during construction, prior to placing backfill. In locations not subjected to hurricanes, 30 lb/ft2 can be used conservatively for the same height of wall and wind velocity conditions.

4.5.1.2.3 DYNAMIC EARTH PRESSURE

Retaining walls which are able to yield laterally during an earthquake, the dynamic effects on the retaining wall must be considered. Earth pressures induced by earthquakes can be approximated by the Mononobe-Okabe pseudo-static approach.

In addition, the inertial forces of the wall, plus that portion of the adjacent earth and/or water which is assumed to act with the wall, should be included.

Ensure that liquid faction is not a problem.

4.5.1.2.4 FACTOR OF SAFETY

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The global stability of the retaining wall must check for overturning, bearing, floatation, and sliding. At a minimum the design must comply with the following safety factors:

For Static loading cases:

Overturning Safety Factor = 1.5 Sliding Safety Factor = 1.5

For Dynamic loading cases:

Overturning Safety Factor = 1.1 Sliding Safety Factor = 1.1

The design loads must be determined in accordance with the codes and standards listed in the Applicable Design Criteria paragraph 4.2. The design load criteria specified herein are minimums; the Contractor is responsible for verifying the actual design loads for this site. If actual design loads are different than that listed herein, the Contractor must notify the KO. The Contractor should determine if special loadings must be considered and notify the KO. Any cost and/or schedule impact due to the Contractor’s failure to notify the KO of these requirements specified herein four weeks before the submittal is due must be to the Contractor’s account. Design loads must be included in the structural notes on the drawings. The minimum design load criteria for this project as follows:

4.5.1.1 DEAD LOADS

The structural system must be designed and constructed to safely support all dead loads, permanent or temporary, including but not limited to self-weight and water.

All loads and load case combinations must be in accordance with the codes and standards listed in the Applicable Design Criteria paragraph 4.2. Load factors for designs must be based on the applicable material design standard.

4.5.1.2 LIVE LOADS

Live loads must be in accordance with the codes and standards listed in the Applicable Design Criteria paragraph 4.2 for the anticipated usage.

4.5.1.3 VEHICLE/VESSEL LOADS

The following data shall be the basis for the design of all structural elements of the Boat Ramp:

Vehicle / Vessel Length Width Weight SAFE 38 class boat on trailer 14.3m 3.6m 9.3 tons

4.6 MATERIALS

The use of the recommended materials and/or alternative materials must be in conformance with the publications listed in the Applicable Design Criteria paragraph 4.2. Any exceptions must be noted. Alternative materials may be submitted to the KO for approval if the Contractor determines the materials are more economically viable for this geographic region. Any material or construction that does not meet the requirements of this SOW or does not meet the applicable codes and standards must be removed and replaced at the Contractor’s expense.

4.6.1 REINFORCED CONCRETE

All concrete must be at least equivalent C 25/30 and reinforcing steel must be equivalent Grade B500A conforming to the applicable Eurocode standard.

4.6.2 CONCRETE

4.6.2.1 CAST-IN-PLACE CONCRETE

Cast-in-place concrete shall be C 35/45. Strength (fć) shall be a minimum of 35 MPa at 28 days using type II cement, enhanced with fly ash and corrosion inhibitors.

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Minimum concrete cover over reinforcing steel shall be 50 mm for the top of wharf face, and 75mm for all other faces.

4.6.2.2 NON-PRESTRESSED PRECAST CONCRETE

Precast non-prestressed concrete shall be C 35/45. Strength (fć) shall be a minimum of 35 MPa at 28 days. Minimum concrete cover over reinforcing steel shall be 50 mm for the top face, and 75mm for all other faces.

4.6.3.