A.02.17_ar170_011010_Final_SOW 17APR2020.pdf

US Army Corps of Engineers Europe District

APO AE 09049

ar170

Statement of Work Project Number:

OHASIS #37713

Construct School in Tadress 3 Agadez, Niger

Prepared by:

Design Section

Engineering Branch

17 APRIL 2020

01 10 10 Statement of Work Construct School Tadress 3 – Agadez, Niger

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SECTION 01 10 10

STATEMENT OF WORK

SECTION TABLE OF CONTENTS:

1 GENERAL

2 CIVIL AND GEOTECHNICAL

3 ARCHITECTURAL

4 STRUCTURAL

ATTACHMENTS

Attachment # 1 Location Map Attachment # 2 Conceptual Site Plan Attachment # 3 ECP and Agadez Ops Agadez Geotech Report Attachment # 4 Conceptual Floor Plan Attachment # 5 Structural Calculations Guideline Attachment # 6 Dedication Plaque

1.0 GENERAL

1.1 PROJECT DESCRIPTION

The Request for Proposal (RFP) provides parameters for a design-build project for construction of a facility in Agadez, Niger; Latitude 16°57’20.87”N, Longitude 7°59’9.02”E (See Attachment #1-Location Map.)

Provide a new solid concrete / masonry school building with four (4) classrooms.

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

a. Clear, grub, and grade the site

b. Construct new Facility

c. Demolish existing makeshift temporary classrooms

d. Provide site improvements as required to support facility

1.2 GENERAL REQUIREMENTS

The Contractor must deliver fully functional, turnkey type facilities (without furniture) as described in this document. The work includes - but is not limited to - design, demolition, fabrication, delivery, installation, construction, and site work. The facility and the installed equipment must be permanent construction.

The facility 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.

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

17-Apr-20 Page 3 of 25 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

Refer to the attached drawings for a depiction of the required functional areas and spatial adjacencies for the site and new facilities/structures.

Provide the following functional areas for the School Building:

Room # Room Name Function Approximate Size (m2)

101 Classroom Classroom for up to 50 students 63.0 102 Classroom Classroom for up to 50 students 63.0 103 Classroom Classroom for up to 50 students 63.0 104 Classroom Classroom for up to 50 students 63.0

Size to be adjusted to available space

- Terrace Covered, open-air walkway -

The layout may necessitate making one classroom slightly smaller to accommodate for the useable space between the existing buildings. New classrooms must not exceed the width of existing classrooms.

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-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 indicated above in Section 1.4 SUBMITTALS. The specific requirements of each milestone are described in each discipline-specific section of this Specification.

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 COR after award for the specific items to be included in the submittal register.

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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 COR.

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 building codes (current versions as of the date of RFP, unless otherwise indicated). In the absence of Host Nation building codes, use the International Building Code (IBC) and codes, technical standards, and regulations referenced in this RFP.

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 COR. 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 SPECIAL CONSTRUCTION REQUIREMENTS

1.8.1 DEMOLITION

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

1.8.1.1 ABATEMENT AND DISPOSAL

All demolished materials must be abated and disposed of in accordance with local laws, codes and regulations. The Contractor is responsible for all required

17-Apr-20 Page 5 of 25 testing before, during and after demolitions as well as for all required compliance with safety standards.

1.8.1.2 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 COR, and provide the COR with the results of the relevant sampling and testing.

Provide the hazardous material report to the COR 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, earthwork, storm system, 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, and vegetation as shown on Attachment #2 - Conceptual Site Plan. The existing information shown on Attachment #2 - Conceptual Site Plan was compiled from google earth, and site photos.

2.2.2 UTILITIES

There is no storm system at the site.

There is no water system at the site.

There is no sanitary system at the site.

However Contractor must ensure that no utility lines (surface and subsurface) are existing in the field prior to the first design submittal.

2.2.3 GEOTECHNICAL

Geotechnical information for another site approximately 2300m east of the project site is provided, see Attachment #3. Contractor must provide a supplement particular for this project (can be developed with existing geotechnical report) and any additional geotechnical investigations if needed.

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.

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, sandstorm 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 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.

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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.).

f. Pre-Final Grading Profiles including contours, finish floor elevations. Provide Cross Sections, and Details. Include spot grades and slopes in Grading Plan.

g. Pre-Final Storm Drainage Design (Profiles, Cross Sections, and Details).

h. Preliminary Landscape Plan and Details

i. 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.

As Built Drawing Submittal:

In addition to the as-built requirements discussed in RFP Section 01 78 00-CLOSEOUT SUBMITTALS, provide a topographical survey of the site per requirements of SOW Section 2.6-SITE SURVEY. Include existing utility lines or structures (both modified and unmodified) encountered in the construction footprint that were not located on the original Site Survey.

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 utility lengths, minimizing earthwork and future expansion.

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

Include pertinent geotechnical information that affects earthwork.

c. Discussion of Storm system constraints and design decisions. Provide a hydrologic and hydraulic analysis of the storm system, including offsite areas that contribute to and influence the project’s storm system. Provide rainfall data, and coefficients used. Provide calculations for sizing of infiltration structures. In the absence of Host Nation or Installation requirements, use a minimum 10-year storm frequency for analysis and design. Include pertinent geotechnical information that affects the infiltration (coefficient of permeability).

d. Discussion of Landscaping constraints and design decisions.

e. Site Survey as an appendix.

f. Geotechnical Investigation and Report as an appendix.

2.3.2 DESIGN DRAWINGS

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. Design drawings include all necessary information (labeling, dimensioning, legend, details, notes, etc.) to allow for complete understanding and constructability of all proposed features. Provide

17-Apr-20 Page 8 of 25 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. 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)

d. Architectural Barriers Act (ABA)

2.5 GEOTECHNICAL INVESTIGATION AND REPORT

An existing geotechnical investigation was performed approximately 2300m east of the project site for another project (See Attachment #3 - Geotechnical Report).

Using the existing geotechnical report requires a separate report with an summary regarded to this project and with any additional necessary geotechnical investigations for the design and construction of project features e.g. in-situ soil testing

- for Recommendations for the storm involving infiltration,

- for Calculations to support conclusions and recommendations

- for soil bearing pressure etc.

Provide additional testing locations, soils test analysis, and soil permeability.

Provide any geotechnical investigations and reports to the Government that are performed. Provide geotechnical information and assumptions in the Design Analysis to support design decisions. An allowable soil bearing pressure is discussed in STRUCTURAL section 4.0. 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.

2.5.1 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, any soil testing locations, additional boring locations, boring logs, groundwater, and any details that convey requirements for site preparation.

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:

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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 elevation.

f. Surface Drainage Features.

g. Signs. Include sign text.

h. Geotechnical boring locations (when additional borings were needed).

i. North arrow and scale of drawing.

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

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

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 COR 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 building and other improvements 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. Locate the proposed building a minimum of 3 meters away from existing buildings. Locate the proposed building outside the dripline of existing trees.

Align the proposed building on the same axis as adjacent buildings and property lines.

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

2.8 EARTHWORK

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

2.8.1 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 subgrades of structures, 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 additional Geotechnical Report particular for this project.

2.8.2 UNEXPLODED ORDNANCE (UXO) CLEARANCE

Provide UXO clearance of the site per Host Nation and Installation requirements.

2.8.3 CONTAMINATED SOIL

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

2.8.4 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 COR for further guidance.

2.8.5 TOPSOIL

Remove topsoil (approximately first 15 centimeters of excavation).

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.

2.8.7 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 foundations and parking, 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 COR. All structure foundation excavations 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 COR.

2.8.8 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.

2.8.9 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/gravel surfaces adjacent to buildings and 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 buildings and structures must slope away from all exterior edges with a minimum slope of 2.5% 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.

d. Requirements of UFC 1-201-01, Chapter 3-3.1 Grading

e. Set finished floor elevations a minimum of 30 centimeters above finished grade at the perimeter of the building, with the exception of finished grade at entry points.

Site grading around the building must meet ABA and Host Nation accessibility guidelines.

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2.9 UTILITIES

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.

2.9.1 STORM SYSTEM

Provide a gravity storm drainage to direct runoff away from improvements, eliminate ponding, and prevent erosion. If using an infiltration or detention system, locate infiltration/detention facilities a minimum of 3 meters away and downhill from structures. Provide an overflow to the infiltration/detention system that will not damage improvements or cause erosion.

Connect building downspouts to the concrete building apron that drain away from foundations a minimum of 1 meters.

2.10 PAVEMENT

a. Provide geometric layout of the minimum 3m wide paved ramp to allow to access the building and exit the building safely. Minimum thickness of concrete is 150mm. Minimum thickness of granular base is 150mm. Provide thicker base if required to protect weak subgrade soils or to reduce frost penetration into the subgrade. Provide expansion joint between building and ramp. Provide medium broom finish on PCC concrete. Reference SOW Section 4.0 - STRUCTURAL for other concrete requirements.

b. Provide minimum 1 meter wide concrete building apron around the entire building.

Install concrete over minimum 150mm aggregate. Install the top of the apron a minimum of 100mm above the adjacent ground. Provide a minimum of 5 centimeters of bury on the concrete. Provide expansion joint between building, ramp and apron. Provide expansion joints within the building apron spaced at 1 meter maximum to prevent cracking.

2.11 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

3.1 PROJECT DESCRIPTION

Provide and perform architectural design and construction services to provide a complete, accessible, functional, and usable new School Building in Agadez, Niger.

Provide a new single-story, solid masonry / concrete building with four (4) classrooms that will serve as a School Building.

Extensive coordination is required between the architectural work and the civil, geotechnical, and structural requirements of this project.

3.1.1 DESIGN

Provide a design and construction package that uses the space allocations, functional adjacencies, design details, and features given or referenced in this RFP. The design must incorporate all referenced codes and regulations. The Contractor is responsible for creating additional details as required to complete a full design. All details must conform to the requirements of this RFP and are subject to the approval of the COR. A schematic design has been attached for reference. The schematic plans are provided for diagrammatic purposes only and do not necessarily represent an approved floor plan or design. The Contractor is responsible for providing a design that meets all requirements of the User and the codes and criteria referenced in this Statement or Work.

3.1.2 DESIGN SUBMITTALS

Provide all architectural submittals after contract award in accordance with Section 01 33 16 DESIGN AFTER AWARD and Section 01 33 00 SUBMITTAL PROCEDURES.

Prepare and submit the documents listed below at the submittals indicated.

3.1.2.1 65% DESIGN SUBMISSION

Include the following drawings and reports as applicable to the project:

a. Code Summary – Provide a tabular code compliance summary indicating Host Nation and/or IBC life safety requirements for all new facilities.

b. Life Safety Plans – Provide plans depicting smoke/fire resistance ratings, egress routes, dead-end corridors, exits, and other aspects of life safety pertaining to the design.

c. Floor Plans – Provide all floor plans, indicating room names, areas, and basic dimensions, scale 1:50.

d. Ceiling Plans – Provide reflected ceiling plans for all rooms, indicating ceiling materials and fixtures, scale 1:50.

e. Building Elevations – Provide all building elevations indicating all exterior materials.

f. Roof Plan – Provide a plan of all roof areas, indicating direction of slope and method of drainage.

g. Building Section – Indicate heights of critical building elements.

h. Wall Section - Provide a typical interior and exterior wall section for each building – describe wall materials.

i. Pre-Final Design Analysis – Provide a narrative explaining the design and indicating how the design and materials meet the requirements of this SOW.

j. Pre-Final Specifications – Provide detailed explanations of requirements for all performed work or provide product specific manufacturer information (brochures, technical information, cut sheets) for all materials and products to be provided/installed.

3.1.2.2 95% DESIGN SUBMISSION

The 95% Submittal provides a complete and final set of contract documents essentially ready for construction by the D/B Contractor. All previous government review comments must have been addressed. Include the following drawings and reports as applicable to the project:

a. All documents from the 65% submittal updated to incorporate 65% review comments.

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b. Floor Plans – Provide all floor plans, indicating room names, areas, and dimensions, scale 1:50.

c. Building Elevations – Provide all building elevations indicating all exterior materials.

d. Roof Plan – Provide a plan of all roof areas, indicating direction of slope and method of drainage.

e. Building Section – Indicate heights.

f. Wall Sections – Provide sufficient wall section(s) to indicate all materials and different conditions.

g. Section and Plan Details – Provide details of critical building intersections.

h. Window and Door Schedule – Provide a schedule of all windows and doors, indicating sizes, hardware, and operation.

i. Stair Section and Details.

j. Finish Schedule – Indicate all proposed finishes.

k. Final Design Analysis – Provide a finalized narrative describing all work to be performed on the project and how it meets the functional and code requirements of the project. Provide product specific manufacturer information (brochures, technical information, cut sheets) for all materials and products to be provided/installed.

l. Final Specifications – Provide line items and detailed descriptions of all work to be performed.

3.1.2.3 100% DESIGN SUBMISSION

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

3.2 TECHNICAL CRITERIA AND STANDARDS

Design and construct the project in accordance with the requirements outlined in Section 1.7 DESIGN CRITERIA.

3.2.1 LIFE SAFETY REQUIREMENTS

The Design must meet all Host Nation and local Fire Suppression System codes and requirements.

All structures to be provided must have exits and means of egress that comply with current Host Nation codes and standards, or in accordance with US codes and standards.

In the absence of Host Nation codes and standards, for individual concerns of Life Safety the Contractor must follow appropriate US codes and standards, including the International Building Code (IBC).

3.2.2 HANDICAPPED ACCESSIBILITY REQUIREMENTS

All facilities must meet applicable Host Nation handicapped accessibility requirements. Additionally, the design must meet the following minimum requirements of the US Architectural Barriers Act (ABA):

a. All changes in level must meet the requirements of Section 303;

b. All doors must be designed to meet the door clear width and maneuvering clearance requirements of Section 404;

c. All ramps must be designed to meet the slope, width, rise, and landing requirements of Section 405; and

d. All stairs must be designed to meet the tread and riser size and nosing requirements of Section 504.

3.3 GENERAL SCOPE OF WORK

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Design the architectural elements of this facility to withstand all site-specific environmental conditions such as wide seasonal temperature swings, local wind, rain, snow and earthquake conditions. All architectural features must be appropriately braced for anticipated seismic activity. The Contractor may propose alternate building materials to meet the facility’s requirements, but final selection of materials is subject to the approval of the COR. Consider economics not only in the initial acquisition, but also in the future maintenance of the materials, when selecting materials and building systems to be incorporated into the project. When requested, the Contractor must provide documentation demonstrating that a chosen alternative material is life cycle cost effective.

3.3.1. SCHOOL BUILDING

Provide one (1) one-story, reinforced concrete and masonry School Building with four (4) classrooms and single sloped metal roof. Exterior finishes include plastered and painted exterior walls and metal panel roofing. Colors of exterior finishes and building design must match adjacent buildings of the same type. The School Building must comply with all Host Nation Ministry of Secondary Education and Technical Vocational Training requirements.

3.4 DETAILED SCOPE OF WORK

The Contractor is responsible for the following specific tasks required for the construction of this facility.

3.4.1 DEMOLITION

Demolition work includes, but is not limited to, the following items:

a. Demolish and remove two existing temporary makeshift classrooms.

3.4.2 BUILDING SYSTEM AND MATERIALS

The intent of this RFP is to allow the Contractor the maximum flexibility to design and construct this facility in an economical manner without sacrificing good engineering practices, quality materials and systems. The Government requires low or no maintenance finish materials to the greatest extent possible. Building materials as described herein for roofing, walls, ceilings, doors, windows and floors are minimum requirements and may require revision based on code compliance and criteria.

3.4.2.1 FIRE PROTECTION RATINGS OF INTERIOR FINISHES

All interior finishes must conform to Host Nation fire protection standards/requirements or equivalent US standards/requirements.

3.4.2.2 ACOUSTICAL DESIGN

Doors, walls, floors, and ceilings must meet the minimum sound protection per Host Nation requirements.

3.4.2.3 THERMAL INSULATION

Provide thermal insulation in accordance with Host Nation and local requirements.] Minimum R-values and maximum U-factors required by this SOW are minimally acceptable levels of thermal insulation.

3.4.2.4 CORROSION PREVENTION

All exterior materials and finishes must be appropriate for continuous exterior exposure. All materials susceptible to UV degradation must contain UV inhibitors.

Provide corrosion resistant coatings on all materials susceptible to corrosion.

Coatings must be applied in the factory prior to delivery to the maximum extent practicable. Physically separate dissimilar metals with non-conductive hardware.

Do not install aluminum in direct contact with concrete. Treat all wood with preservatives where it is contact with concrete or exposed to the exterior. Cover all exterior wood with metal flashing or exterior grade paint. Do not install wood in contact with soil.

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3.4.3 EXTERIOR CONSTRUCTION WORK

Provide the following exterior architectural systems.

3.4.3.1 EXTERIOR WALLS

Design and construct new exterior walls in accordance with (IAW) the requirements of this SOW. Refer to Section 4.0 STRUCTURAL. Exterior walls must have smoke/fire resistance ratings as required by Host Nation, and local fire and life safety codes. Provide exterior wall finishes appropriate for the wall structure as required below. Exterior front wall shall be approximately 4.00 m high, exterior back wall approximately 3.50 m high.

3.4.3.1.1 EXTERIOR WALL PLASTER

Provide new exterior cementitious plaster and paint on all concrete and masonry surfaces. Steel trowel to a smooth surface. Paint with one coat of approved alkali resistant undercoat paint and two coats of super acrylic finish. Paint must be lead free, suitable for exterior applications, washable when dry. Submit a color sample of the paint along with the manufacturer's catalog data including application instructions and product data for COR's acceptance.

3.4.3.2 EXTERIOR DOORS

Provide new exterior doors as indicated on attached drawings. All doors will not have latch hardware and instead be secured with a pad lock. Provide pad lock with minimum two keys per lock. Type of pad lock shall be coordinated with the COR.

3.4.3.2.1 EXTERIOR CLASSROOM DOORS

Provide new, locally constructed metal double-leaf doors and frames. Reinforce flat metal sheets to prevent oil-canning. All metal must be covered with a suitable rust-inhibitive primer and then be painted with a glossy protective coating. All door frames must be mounted flush with the surrounding walls and seams must be sealed.

Each door must have the following hardware as a minimum:

a. Three hinges on each leaf;

b. Lever latch handles;

c. Top and bottom sliding bolts to secure inactive door leaf in the closed position.

3.4.3.3 EXTERIOR WINDOWS

Provide exterior windows as indicated on attached drawings.

3.4.3.3.1 EXTERIOR LOUVERED WINDOWS

Provide new locally constructed, metal three-part louver windows and frames.

Louvers in all panels must have open/close operability. The two outer panels must be 100% swing-open (turn) operable. Operable panels must have a bolt at the top and bottom to secure the panel in the closed position and be closed from inside.

Provide louvered window above terrace roof cover and roof ridge at front wall. All metal must be covered with a suitable rust-inhibitive primer and then be painted with a glossy protective coating. All window frames must be mounted flush with the surrounding walls and seams must be sealed. All windows must be sized to meet life safety requirements. Anchor and secure window frames to structure as required to resist the expected wind and seismic loads. Caulk all joints between window frames and building with sealant to provide a watertight installation and proper finish.

3.4.3.3.2 EXTERIOR WINDOW SILLS

Install new exterior metal window sills on all windows. The window sills must match material, finish, and color of window frames. Caulk all joints between window frames and building with sealant to provide a watertight installation and proper finish.

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3.4.3.4 ROOFING

Roof design and materials must comply with Host Nation requirements.

3.4.3.4.1 ROOF CONSTRUCTION AND ROOF COVERING

Provide new roof structure, roof lathing and new standing seam metal roofing. Roof shall have a single-slope running front (highest point) to back (lowest point).

All roofing must have a slope greater than 15 degrees. Steel or aluminum roofing must be factory finished and have minimum thickness of 0.70 mm. Insulation must be provided with a maximum U-factor of U-0.220 (USI 1.249). Roofing must have concealed fasteners. Provide all required flashings, fasteners, and sealing materials. Install as required by the manufacturer. Metal roofs must have 20 year warranty. Submit material and color samples to COR for approval.

3.4.3.4.2 TERRACE ROOF COVERING

Provide roof covering for exterior terrace, approximate height above terrace 2.50 m as described above except without insulation.

3.4.3.4.3 EAVES, OVERHANGS, AND SOFFITS

Provide roof overhangs a minimum of 300 mm from the face of exterior walls. Leave roof soffits open for ventilation.

3.4.3.4.4 ROOF GUTTERS, DOWNSPOUTS AND FLASHING

Provide new pre-finished galvanized steel roof gutters, downspouts and flashing.

PVC gutters and downspouts are not acceptable. Size gutters and downspouts for roof drainage area and 10-year storm rainfall intensity. Submit gutter and downspout sizing calculations in the Design Analysis. Coordinate storm drainage connections with the requirements of Section 2.0 CIVIL AND GEOTECHNICAL. Submit material and color to COR for review and approval.

3.4.3.5 STAIRS

Provide cast-in-place concrete stairs as indicated on the attached drawings. Stair and stair components must comply with Host Nation Life Safety Codes and accessibility requirements. Stairs must be a minimum of 2.0 m wide. Provide new metal handrails on both sides of stair. Handrails must extend a minimum of 300 mm beyond each end of the stair. Handrail extensions at the top of the stair must be level, handrail extensions at the bottom of the stair must be sloped. Stairs and all stair components must conform to the requirements of Section 4.0 STRUCTURAL.

3.4.3.6 RAMP

Provide a cast-in-place concrete ramp as indicated on the attached drawings. Ramp and ramp components must comply with Host Nation Life Safety Codes and accessibility requirements. The new ramp must have a maximum slop of 8.3% (1:12).

Provide new metal handrails on both sides of each ramp. Handrails must extend a minimum of 300 mm beyond each end of the ramp. Handrail extensions at the top and bottom of the ramp must be level. Ramp and all ramp components must conform to the requirements of Section 4.0 STRUCTURAL.

3.4.3.7 EXTERIOR METAL

All new exterior metal must be painted. Clean and paint all new metal elements that have not received a factory applied finish in the field. Scrape and clean all surfaces to remove rust and dirt before painting. Paint system must be one coat of rust inhibitive primer and two coats of finish for all surfaces that are not painted. Finish coat paint must be an alkyd base paint. Submit colors for review and approval by the COR.

3.4.4 INTERIOR CONSTRUCTION WORK

Provide the following interior architectural systems.

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3.4.4.1 INTERIOR WALLS

Provide new interior partition walls IAW functional requirements. Provide penetration openings (for example for ventilation, piping and cables) as required by other sections and drawings of this RFP.

3.4.4.1.1 INTERIOR CONCRETE/MASONRY WALLS

Provide new interior partition walls IAW functional requirements. Provide penetration openings as required by other sections and drawings of this RFP. All interior walls must be full height between floor and roof/ceiling structure.

3.4.4.2 INTERIOR WALL FINISHES

Provide new interior wall finishes as described below. Submit data sheets, color, and pattern of all wall finishes to the COR for review and approval.

3.4.4.2.1 INTERIOR WALL PLASTER

Provide new cementitious plaster on all concrete and masonry surfaces. Steel trowel to a smooth surface.

3.4.4.2.2 INTERIOR PAINT

Paint all interior walls with a minimum of two coats of latex enamel paint over compatible primer. Paint must be lead free, water resistive and open to vapor diffusion. All paint must be low VOC and washable after drying. Paint short side walls with interior black “chalk board “ paint running the full width of the room with a masonry ledge protruding 10 cm from the wall below the “chalk board” to act as a chalk shelf.

3.4.4.3 CEILINGS

Do not provide ceilings. Expose roof structure and/or underside of roofing materials in all rooms and buildings. Pant exposed roof structure as described under section “exterior metal”.

3.4.4.4 FLOOR SLABS

Provide floor slabs in accordance with the requirements of Section 4.0 STRUCTURAL and the following.

3.4.4.4.1 SCREED AND FLOOR SLABS

Provide bonded cement screed in all rooms / areas.

3.4.4.5 FLOOR FINISHES

Provide new interior floor finishes as described below. Submit data sheets, color, and pattern of all floor finishes to the COR for review and approval.

3.4.4.5.1 CONCRETE FLOOR SEALER

Provide low VOC, clear epoxy concrete sealer on all exposed concrete floors.

Concreate sealer must be appropriate for high-traffic areas. Apply epoxy concrete sealer in accordance with manufacturer instructions. Test concrete for appropriate moisture content prior to application.

3.4.5 SIGNAGE

Provide all signage in accordance with Host Nation standards.

3.4.5.1 EXTERIOR SIGNAGE

Provide exterior signage as described below. Construct all exterior signs from corrosion resistant materials appropriate for continuous exposure to the elements.

3.4.5.1.1 EXTERIOR DEDICATION PLAQUE

Provide a dedication plaque approximately 600 mm wide x 450 mm high fabricated from powder coated aluminum with permanent printed 18 mm high, “Arial“ font letters as indicated below. Adhesive applied images or text are not acceptable.

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Provide the emblem of the United States Africa Command between two flag emblems, one flag of the United States of America and one of the Republic of Niger. Plaque location and mounting height to be directed by COR.

The exterior dedication plaque must have text similar to the following in both English and the Host Nation language: “The Construction of the School Building in Tadress was accomplished as a partnership between the people of the United States of America and the people of the Republic of Niger, with support from the United States Africa Command and the Office of Security Cooperation, U.S. Embassy Niger and the Ministry of Secondary and Technical Education and Vocational Training.”

Provide the year of project completion below the text. Coordinate the final dedication plaque verbiage and graphics with the COR prior to procuring the sign.

See attached dedication plaque template for reference.

3.4.5.1.2 EXTERIOR ROOM SIGNS

Provide exterior room identification signage for each room indicated below. Sign plate must be factory finished made from corrosion resistant metal or acrylic plastic with holes to fasten sign on walls with screws and expansion shield.

Surface mount signage with concealed mechanical fasteners adjacent to room entry doors. At a minimum, provide signs at the following rooms:

a. Classroom 1

b. Classroom 2

c. Classroom 3

d. Classroom 4

3.4.6 FINAL CLEAN-UP

Clean the entirety of the facility, including the roof. Follow the building material and cleaning agent manufacturer's instructions. Provide all devices and tools required for the performance of the work to include all necessary additional scaffolding and ladders. Remove all temporary protective coatings left in place during construction. Liquid cleaners must not contain any volatile organic content.

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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

a. The design and construction of a new classrooms building with a reinforced concrete foundation, reinforced concrete frames, concrete masonry unit infill walls.

b. Design and install a mono-slope pre-engineered and pre-fabricated roofing system with metal deck, steel trusses or joist, purlins, and bracing.

c. Other elements include but are not limited to foundations, superstructure (i.e. walls, columns and beams), roof framing, lateral load stability and diaphragm design, framing and connection of any architectural features, stairs, concrete pads, and site structures.

The Contractor must have as part of his design team a licensed structural engineer per Host Nations standards. If work is being performed in a country that does not have licensed structural engineers, then engineering degrees along with extensive structural design experience can be submitted to the COR for qualification verification and approval. The structural engineer’s licensure or qualifications must be submitted to the COR in the design quality control plan prior to the start of design. The Contractor’s structural engineer must be responsible for the design of any part of the building structural systems.

The structural design of the foundation, superstructure, roofing system, and any other structural aspects must be in accordance with the design criteria listed in this document. The superstructure of the project building and the foundation must be constructed from materials specified in paragraph 4.7.2 Superstructure System.

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. All Design, Safety in Construction, Materials, and Performance of Construction Services must be in accordance with the standards of the Ministry of Secondary and Technical Education and Vocational Training. In absence of Host Nation codes, use 2018 International Building Code and ASCE 7-16 for structural calculations. In case of conflicting requirements between the various elements, the more stringent criteria must govern.

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 paragraph 1.7 DESIGN CRITERIA of this document.

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. In addition to General Section 1.4 SUBMITTALS of this document the following documents must be submitted.

4.3.1.1 DRAWINGS, DESIGN CACULATIONS, AND SPECIFICATIONS

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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 Representative (COR)

4.3.1.2 STRUCTURAL CALCULATIONS & DESIGN ANALYSIS

The contractor must submit the structural…