UPDATE - SOW - 6July2023.pdf

US Army Corps of Engineers Europe District

APO AE 09049

ar180

Statement of Work Project Number: 502381

OHASIS ID#: 35190

Fiscal Year: 2022

FY22 LSO Mamoeketsi Primary School Maseru, Lesotho

Prepared by:

Design Section

Engineering Branch 6 July 2023

01 10 10 Statement of Work LSO Mamoeketsi Primary School– Maseru, Lesotho

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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

5 ELECTRICAL & COMMUNICATIONS

6 MECHANICAL & PLUMBING

7 FIRE PROTECTION (Not applicable) 8 SUSTAINABILITY (Not applicable) 9 CYBERSECURITY (Not applicable)

ATTACHMENTS

Attachment # 1 Location Map Attachment # 2 Conceptual Site Plan Attachment # 3 Typical Science Lab Plan Attachment # 4 Typical Latrine Designs Attachment # 5 Ventilated Improved Pit (VIP) Latrine Design Guides Attachment # 6 Existing Classroom Layout As-Builts Attachment # 7 Structural Calculations Guideline Attachment # 8 Sample Dedication Plaque

1.0 GENERAL

1.1 PROJECT DESCRIPTION

The Request for Proposal (RFP) provides parameters for a design-build project for construction and renovation of a facility in Maseru, Lesotho; Latitude 29°21'46.5"S, Longitude 27°29'02.6"E. (Refer to the attached Location Map.)

The project includes new construction of a science laboratory for the Mamoeketsi Primary School located in Maseru, Lesotho. The project will also renovate/upgrade several elements that are in disrepair on the school grounds. Along with the science lab, there will be an additional 13 seat toilet block for students, replacement of 2 damaged metal sheeting multi classroom roofs with added stormwater gutters, replacing the classroom flooring in the 2 indicated classrooms, repair admin/office building (roof & floor repair, patch & repaint walls, and add new ceiling), renovation of the existing toilet blocks, replacing the school’s main distribution panel, replacing the existing perimeter fence with additional security lighting, repairing the clogged kitchen chimney, and providing a running water source (there is a water supply adjacent to the site within 10 meters), and providing a rainwater harvesting system for the two renovated classroom buildings.

Currently, the school does not have a dedicated place to teach science to the students. This project will address school curricular limitations around science and improve learning conditions at the school by renovating the buildings, and adding running water, and providing a rainwater harvesting system for safeguarding for droughts. Furthermore, the perimeter security fencing and lights will reduce theft of school property.

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

a. Construct science laboratory

b. Replace leaking roofs in all two multi classroom buildings and install gutters for stormwater diversion

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c. Repair existing latrines and construct one additional gender partitioned latrine building with separate entrances

d. Replace school main distribution panel to accommodate new science building

e. Connect school to nearby (within 10 meters) municipal water supply

f. Repair clogged kitchen chimney

g. Replace flooring in all 7 classrooms. Note: there are seven total classrooms in three buildings

h. Provide a new security perimeter fence with security lighting

i. Grade and clean up existing site

j. Construct rainwater harvest and storage system for the two renovated classroom buildings

1.2 GENERAL REQUIREMENTS

The Contractor must deliver fully functional, turnkey type facilities (without mobile 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 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 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.

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 to the Contracting Officer (KO) 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

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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 RFP 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 RFP 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

The facility and the installed equipment must be permanent construction with an expected lifespan of more than 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 the 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

6-Jul-23 Page 5 of 53 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 SPECIAL CONSTRUCTION REQUIREMENTS

1.8.1 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.

1.8.1.1 ABATEMENT AND DISPOSAL

All demolished materials, including hazardous materials identified below, must be abated, and disposed of in accordance with local laws, codes and regulations. The Contractor is responsible for all required testing before, during and after demolitions as well as for all required compliance with safety standards.

1.8.1.2 LOCATION 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 results of the relevant sampling and testing. Provide the hazardous material report no later than 30 days after Notice to Proceed (NTP) for information and approval.

1.8.2 PROTECTION OF WORK AREA

The existing school facilities must remain operational during construction.

Construction fence, staging area, and construction activities cannot block access to the existing school facilities.

1.8.2.1 DUST AND DEBRIS CONTAINMNET

Seal the project area with construction barriers and dust partitions in order to contain construction dust and debris and maintain a clean environment outside of the work area. In addition to protections within the work area, provide temporary protection for all finishes from the entrance of the facility to each area of work. Patch and repairing any damage caused during construction. Coordinate the locations of barriers with the Government prior to the start of work.

1.8.2.2 PROTECTION OF FURNITURE, FIXTURES, AND EQUIPMENT

Protect all existing furniture, fixtures, and equipment that remain within the work area. Coordinate with the Government for any special protection measures required for sensitive equipment. The Contractor is responsible for repairing or replacing any damage caused during construction. The Contractor must conduct a preconstruction survey of furniture, fixtures, and equipment with a Government representative present.

1.8.2.3 NOISE AND VIBRATION CONTROL

Employ demolition and construction methods that minimize the production of sound and vibration. Coordinate the schedule of especially loud or disruptive activities with the KO prior to the start of work.

1.8.2.4 PROTECTION OF EGRESS AND LIFE SAFETY

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The Contractor must not take actions that hinder existing egress paths or disrupt operation of life safety systems without prior coordination with the KO and all applicable authorities having jurisdiction (AHJ). The Contractor is responsible for supplying signage or other protective measures as required by the KO or AHJ prior to impeding the egress path or life safety system.

1.8.3 SEQUENCING OF CONSTRUCTION WORK

Construction work can be completed during the school year; however, the existing school facilities must remain operational during construction. The Contractor can construct all new facilities without sequencing or phasing; however, the Contractor must assure that the access to the existing facilities is maintained and uninterrupted. If construction is to take place during class hours, coordinate with the school in order to prevent disturbance of the students.

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 of the two new buildings, demolition, earthwork (foundations, utility installation, site grading and cleanup), storm system and rainwater harvest systems to match existing, sanitary system (VIP latrine), trenching and routing of new water system, pavement, fencing, outdoor furnishings, and general site 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 the attached Conceptual Site Plan. The site is generally flat. The existing information shown on the attached Conceptual Site Plan was compiled from Google Earth and site photos.

2.2.2 UTILITIES

The existing facilities on site are graded to drain water off the site into adjacent drainage ditches.

The property is not connected to an existing municipal potable domestic waterline.

The water supply is reported to be within 10 meters of the school grounds. There is an existing water borehole well that was functioning at the time of the site visit.

The existing sanitary sewer facilities on site are not connected to a municipal sanitary sewage system. The school uses a PIT latrine system.

The existing facilities on site are connected to municipal electricity. The Lesotho power standard is 220 V at 50 Hz. Refer to the other sections of this SOW for details of these existing utilities.

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. Refer to other sections of this SOW for the requirements of the Geotechnical Investigations and Report.

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:

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a. Weather 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. Preliminary 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 Demolition Plan

f. 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.).

g. Pre-Final Grading Profiles, Cross Sections, and Details. Include spot grades and slopes in Grading Plan. Include contours, cross sections, and details.

Include erosion control design.

h. Pre-Final Pavement Profiles, Cross Sections, and Details

i. Pre-Final Utility (Storm, Sanitary, and Water) Profiles, Cross Sections, and

Details.

j. Pre-Final Fencing and Outdoor Furnishings Details

k. Preliminary Landscape Plan and Details

l. 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

Submit a Design Analysis in accordance with RFP Section 01 33 16-DESIGN AFTER AWARD. 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:

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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 tree removal, and future expansion.

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 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 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 drainage basin map(s), rainfall data, and coefficients used. Provide calculations for sizing of structures, including detention, infiltration, and LID features.

Provide documentation for the 100-year flood elevation determination. Provide Pre and Post Development comparisons for detention/retention facilities. Use the Rational Method or TR-55 for analysis and design. 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 storm system. Confirm that the existing receiving system has adequate capacity to receive the additional stormwater flow generated by the project.

e. Discuss latrine design decisions and restraints. Provide justification for chosen latrine locations.

f. Discussion of Water system constraints, design decisions and source. Provide calculations to demonstrate water system meets project requirements, including demand, water pipe sizing, design water pressure and flow rates at buildings and fire hydrants. Provide field conducted flow tests from nearest hydrants (or other relevant water structures if hydrants unavailable). Provide calculations on the pipe’s structural capacity if the pipe is shallower than required in section 2.10-Utilities. Provide well and water tank calculations.

g. Discussion of Pavement constraints and design decisions. Include pertinent geotechnical information that affects the pavement design.

h. Discussion of Fencing constraints and design decisions. Provide structural calculations for the fence foundations if the foundation is designed by the Designer of Record. Fence calculations are not necessary if the fence foundation design is from an industry standard detail.

i. Discussion of Outdoor Furnishings constraints and design decisions. Provide structural calculations for foundations if the foundation is designed by the Designer of Record. Calculations are not necessary if the foundation design is from an industry standard detail.

j. Discussion of Landscaping constraints and design decisions.

k. Site Survey as an appendix.

l. 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 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

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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. TB MED 577/NAVMED P-5010-10/AFMAN 48-138_IP, Sanitary Control and Surveillance of Field Water Supplies

e. USACE AED Design Requirements: Sanitary Sewer & Septic System

f. WHO Technical Notes on Drinking-Water, Sanitation and Hygiene in Emergencies

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 foundation, grading, infiltration, and utility design. Perform the necessary amount of testing, borings and test pits at depths suitable for the project improvements.

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. 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.

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, infiltration rate, 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, topsoil, and trench backfill. Include dewatering and temporary retaining structure needs.

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i. Soil Resistivity.

j. Frost Depth.

k. Recommendations for pavement design and construction.

l. 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 and frost depths, and any details that convey requirements for site preparation.

Perform any additional geotechnical investigations necessary for the design and construction of project features. 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. In the absence of geotechnical investigations performed on-site, 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.

2.6 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 elevation.

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

pipe sizes and materials.

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

j. Signs. Include sign text.

k. Trees/Woods: In wooded areas that trees are to be protected, locate outside drip line of wooded area, include 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.

l. Geotechnical boring locations.

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

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n. North arrow and scale of drawing.

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

p. 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 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 building and other improvements as indicated on the attached 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 buildings 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 DEMOLITION

Remove existing structures, utilities, pavement, vegetation, and any other features to construct the proposed improvements. Provide straight, neat saw cuts 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 required 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, or removal work. Repairs, reinforcement, or structural replacement require approval by the KO prior to performing said work.

2.8.3 TREES

Unless otherwise noted on the attached Conceptual Site plan, 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.

https://en.wikipedia.org/wiki/Universal_Transverse_Mercator_coordinate_system https://en.wikipedia.org/wiki/Universal_Transverse_Mercator_coordinate_system

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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 to the extent possible. 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.

2.8.7 ADDITIONAL REQUIREMENTS

Reference RFP Section 00 74 01-SPECIAL CONDITIONS and 01 30 00-GENERAL REQUIREMENTS for additional demolition, protection, and permitting requirements.

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, utility trenches, replacement and improvement of on-site soils, soil compaction (for subgrades of structures, paving, and landscaped areas), compaction for utility trenches, 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.

2.9.6 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

6-Jul-23 Page 14 of 53 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 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 KO. 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 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 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% 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. Set finished floor elevations a minimum of 15 centimeters above finished grade at the perimeter of the building, with the exception of finished grade at entry points.

e. Set building finish floor elevations at a minimum of 30 centimeters above the local 100-year flood level.

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

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).

2.10 UTILITIES

This section applies to all project underground utilities located outside the building, including but not limited to, sanitary sewer, water supply, storm drainage, electrical, communications, gas, liquid fuel, and heat. See Sections 5.0-ELECTRICAL & COMMUNICATIONS and Section 6.0-MECHANICAL for additional utility requirements.

Proposed utility main alignments must be at least 3.0 meters from facility or building foundations, except for building connections. Provide horizontal and vertical separation between new and existing 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; greater than frost penetration; or sufficient to support imposed dead and live loads for the pipe materials used;

6-Jul-23 Page 15 of 53 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 Section 1.0- GENERAL. 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 smaller buildings to direct runoff away from improvements, eliminate ponding, and prevent erosion. A pump system is not allowed. The renovated classroom buildings will have a rainwater harvest system added. Provide an overflow to the harvest tank system that will not damage improvements or cause erosion.

Connect building downspouts to splash blocks that drain away from foundations a minimum of 2 meters or to a rainwater collection tank. Collect runoff from other surfaces to a storm water system that will route stormwater away from the site.

Provide a storm drainage system to direct runoff away from improvements and eliminate ponding. For the two classroom buildings, connect building roof gutters and downspouts to match the existing rainwater tanks that currently exist on site.

Locate rainwater harvest tanks out of pathways and windows. For each rainwater tank, provide a spigot at the bottom of each tank. Below the spigot, provide a splash block that will drain water away from building foundations a minimum of 3 meters per site grading requirements. Provide insect screens to all open orifices to the tank system. Provide UV resistant tanks. Provide concrete foundation to support rainwater collection tank and install the bottom of the tank a minimum of 45 centimeters above finish grade. Provide structural tie downs for the tank.

Provide an opening for cleaning and allow access into the tanks. Provide system to divert first flush from the roofs that may be contaminated with dust, animal droppings and dirt so that it does enter the tank.

2.10.2 SANITARY SYSTEM

Provide a new latrine building that follows the design shown on the attached Typical Latrine Plans. Design footprint size of the soak away area of the pit may need to be increased beyond what is typical due to the clayey nature of the site soil.

Rehabilitate the existing latrine buildings as determined to be needed during design.

After installation, test any sanitary lines and structures for leakage and deflection per local codes. Provide test results to the KO. Locate and repair any sections failing to pass the required tests. Repeat the specified tests and inspections on the repaired sections.

2.10.3 WATER SYSTEM

Provide a water system to connect the proposed building to the nearby existing water main. Provide a central water tap system (recommend 4 push button taps on a

6-Jul-23 Page 16 of 53 small concrete slab with 3m runoff) that is plumbed into the municipal water system. Design the system to meet all flow requirements of the facility, including potable water and fire flows. Provide a meter at the water connection point that is accessible by a third-party utility, but within the fence line for security.

All new water distribution piping must have a minimum horizontal separation of 3 m from all new or existing sanitary systems, storm sewers, and pit latrines.

In the absence of Host Nation standards, design the water system per the IBC.

After installation, test water supply lines according to local codes for leakage.

Before the water supply line is put into final operation, disinfect the line, and then flush the line to remove traces of the sterilization agent. Test treated line for coliform bacteria. Provide test results to the KO. Locate and repair any sections failing to pass the required tests. Repeat the specified tests and inspections on the repaired sections.

See SOW Section 6.0 – MECHANICAL for indoor water scope.

2.11 PAVEMENT

For newly constructed buildings, provide minimum 1-meter-wide concrete building apron around the entire building. Install concrete over minimum 15 centimeters aggregate. Install the top of the apron a minimum of 10 centimeters above the adjacent ground. Provide a minimum of 5 centimeters of bury on the concrete.

Provide expansion joint between building and apron. Provide expansion joints within the building apron spaced at 1 meter maximum to prevent cracking.

Provide a gravel driveway for the new vehicle gate as well as a parking pad.

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

2.12 FENCE

Provide a minimum 1.8-meter high, galvanized security fence around the perimeter of the property to replace the existing fence as shown on the attached Conceptual Site Plan. Replace any existing gates with similar types. Provide a lock for each gate with 2 keys for each lock. Provide electrical grounding as required by local codes. Provide fencing and gates per USACE Protective Design Center Standard Fence Drawings (FE5 Chain-Link Security Fence Details and FE5 Chain-Link Security Fence Gate Details). Host Nation equivalent fencing, such as chain-link wire fence with razor wire on top or an invisible fencing variation, and gates may be acceptable per KO approval.

2.14 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.

6-Jul-23 Page 17 of 53

3.0 ARCHITECTURAL

3.1 PROJECT DESCRIPTION

Provide and perform architectural design and construction services to provide a complete, accessible, functional, and usable Primary School located in Maseru, Lesotho.

Provide new single-story, solid masonry / concrete building that will serve as a science laboratory for the primary school.

Provide new single-story, solid masonry / concrete building that will serve as a latrine for the primary school.

Renovate two (2) existing single-story masonry/concrete buildings that serve as classrooms for the primary school. The renovation work for these two (2) existing buildings is limited to, replace the existing leaking roof, repair, or replace existing gutter for storm water diversion and patch and paint interior walls as well as rehabilitation of existing floor surface.

Repair or replace existing kitchen chimney, which was clogged at the time of the site visit. Provide new skylights in kitchen for natural daylight.

Repair existing two (2) latrines. The renovation work for these two (2) existing Latrines is limited to, inspection and repair or replace the toilet seats, patch and paint and cleaning out the underground waste vault. Inspection and repair/replacement of the wooden toilet seats.

Extensive coordination is required between the architectural work and the work of other disciplines described in this SOW.

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 KO. 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 RFP Section 01 33 16-DESIGN AFTER AWARD and 01 33 00-SUBMITTAL PROCEDURES. Prepare and submit the documents listed below at the submittals indicated.

3.1.2.2 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. Demolition Plans – Provide existing floor plans, indicating all demolition required.

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

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

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

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

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

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

j. Interior Elevations – Provide interior elevations of all bathrooms and built-in casework and kitchenettes, indicate critical heights of surfaces and plumbing fixtures and describe all materials and finishes.

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

l. 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.

3.1.2.3 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.

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…