B.08.02.08 RRR SOW Section 011010.pdf

US Army Corps of Engineers Europe District

APO AE 09049

Co16c

Statement of Work Project Number:

FY21-495022

Rapid Runway Repair Slunj, Croatia

Prepared by:

Design Section

Engineering Branch 21 April 2021

01 10 10 Statement of Work Rapid Runway – Slunj, Croatia

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SECTION 01 10 10

STATEMENT OF WORK

SECTION TABLE OF CONTENTS:

1 GENERAL

2 CIVIL AND GEOTECHNICAL

ATTACHMENTS

Attachment # 1 Location Map Attachment # 2 Conceptual Plan

1.0 GENERAL

1.1 PROJECT DESCRIPTION

The Request for Proposal (RFP) provides parameters for a design-build project for construction of a rapid repair runway in Slunj, Croatia; Latitude 45°07’48”N, Longitude 15°26’39”E (Refer to the attached Location Map).

A 50 meter by 50 meter unreinforced concrete slab is required to perform rapid runway repair training. 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. Improve subgrade (if required)

c. Construct 50 meter by 50 meter unreinforced concrete slab

d. Implementation of storm drainage features

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 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.

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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-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

1.3.1 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.

1.3.2 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.

1.4 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.

1.4.1 LIFE-SPAN

The facility and the installed equipment must be semi-permanent construction with an expected lifespan of more than 5, but less than 25 years.

1.4.2 MAINTAINABILITY

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

1.4.3 OPERABILITY

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

1.4.4 STANDARDIZATION

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

1.5 DESIGN DIMENSIONS

Develop the design using the metric system.

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1.6 DESIGN CRITERIA

Project design, site facilities, utility systems and material standards must be in accordance with Host Nation and US building codes and following codes / criteria (Refer to RFP Section 01 30 01-GENERAL REQUIREMENTS, paragraph REFERENCED STANDARDS for the applicable version and date):

a. UFC 3-260-02 Pavement Design for Airfields

b. TC 5-340 Air Base Damage Repair (Pavement Repair)

While this RFP references various source standards and specifications, all design documents are to meet US and Host Nation codes and requirements. It is the designer's responsibility to demonstrate that the Host Nation standard is equal to the cited US standard or specifications being supplanted. The more restrictive standards apply 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.

1.7 SPECIAL CONSTRUCTION REQUIREMENTS

1.7.1 DEMOLITION

With the exception of clearing and grubbing, no demolition is required.

1.7.1.1 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.

1.7.1.2 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.

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.

2.1 SCOPE SUMMARY

Civil works for this project include, but are not limited to, site survey, site layout, demolition, earthwork, and pavement. 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 vegetation. A conceptual site plan was compiled using information gathered from Google Earth and site photos.

2.2.2 UTILITIES

There are no known existing utilities at the site. Contractor must verify all utility locations (surface and subsurface) in the field prior to the first design submittal.

Existing road and site storm drainage is managed using sheet flow and infiltration matching natural drainage patterns.

2.2.3 GEOTECHNICAL

There is no geotechnical information available for the project site.

2.2.4 ENVIRONMENTAL

It is unknown if environmental protection areas or archeological preservation areas exist on the project site. The Contractor must determine and follow all applicable Host Nation Environmental requirements. All HN required assessments and surveys shall be conducted prior to first design submittal and all HN required Environmental reports shall be provided in accordance with SOW Section 2.3 DESIGN

SUBMITTALS.

Hazardous or contaminated materials are expected to exist on site.

2.2.5 UNEXPLODED ORDNANCE (UXO)

The proposed construction area is a previous ordinance disposal area and UXO may exist on site. The Host Nation will conduct a UXO survey of the area and clear the site of UXO prior to construction.

2.2.6 EXISTING CONDITIONS INVESTIGATION

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

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

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

c. Mobilization and staging constraints.

2.3 DESIGN SUBMITTALS

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

65% Design Submittal:

a. Pre-Final Design Analysis of civil features.

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

c. Final Existing Conditions Plan.

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d. Pre-Final Demolition Plan.

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

Provide a site layout demonstrating standoff distances required in Section

2.12 SIGNAGE.

f. Pre-Final Grading Plans, Profiles, Cross Sections, and Details. Include contours, finish elevations, spot grades and slopes in Grading Plan. Include erosion control design.

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

h. Pre-Final Drainage Plans, Profiles, Cross Sections, 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

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:

a. Discussion of Site Layout constraints and design decisions, including but not limited to, land use, vehicle 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 cut and fill calculations. Provide slope stability calculations for slopes steeper than 2H:1V or slopes supporting proposed structures. Include pertinent geotechnical information that affects earthwork.

d. Discussion of storm drainage 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 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.

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e. Discussion of Pavement constraints and design decisions. Provide calculations for the pavement section. Include pertinent geotechnical information that affects the pavement design.

f. Discussion of Landscaping constraints and design decisions.

g. Site Survey 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

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 3-260-02 Pavement Design for Airfields

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

2.5 GEOTECHNICAL INVESTIGATION AND REPORT

A geotechnical investigation is not a direct requirement of this project, but the Contractor must evaluate existing soil conditions to make concrete subgrade design decisions. If subgrade soils are determined to have high plasticity and/or a high degree of saturation (clay), additional subgrade modifications will be required.

See Section 2.11 PAVEMENT.

Perform 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. 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

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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. Railroads.

l. 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.

m. Geotechnical boring locations (if applicable).

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

o. North arrow and scale of drawing.

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

q. 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. In the absence of the Installation’s coordinate system, use the Universal Transverse Mercator (UTM) coordinate system or the Military Grid Reference System (MGRS). Use the local vertical coordinate system.

2.7 SITE LAYOUT

Locate the proposed Rapid Runway Repair slab within the area indicated on the attached Location Map. The selected location may be on either side of the existing road (north or south). Select the final site to minimize clearing, grubbing, and earthwork requirements. Offset the proposed Rapid Runway Repair slab a minimum of 20 meters away from existing access road.

Amend the site layout as determined by the site-specific constraints, grading requirements, the owner’s preferences, accessibility, and opportunities that are identified and evaluated as part of the Contractor’s scope of work.

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

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 DEMOLITION

Remove existing vegetation and any other features to construct the proposed Rapid Runway Repair slab. Remove trees with driplines within the proposed footprint. 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

To the greatest extent possible, avoid unnecessary damage to trees that do not require removal. Trees are defined as larger than 150mm diameter at 1.3 meters above existing grade. Mitigate for tree removal per Host Nation requirements.

Contractor must determine if HN tree cutting season exists prior to any tree removal. Contractor is responsible for scheduling and coordinating any necessary tree cutting waivers or permits with the KO.

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. Abandoned utilities must be removed up to the utility main (or next utility main junction) and capped. Manholes or underground structures to be abandoned must be removed to a minimum depth of 50 centimeters below finish grade. Fill abandoned manhole or structure per Section 2.9-EARTHWORK requirements.

2.8.5 DUST, DEBRIS, AND EROSION CONTROL

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

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

2.8.6 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

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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 pavement), compaction for utility trenches, maximum lift depths, density testing frequency, maximum temporary and permanent slopes, and engineered support systems.

2.9.2 UNEXPLODED ORDNANCE (UXO) CLEARANCE

UXO clearance will be performed by the Host Nation and is not required.

2.9.3 CONTAMINATED SOIL

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

2.9.4 CULTURAL RESOURCES

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

2.9.5 TOPSOIL

Remove and save topsoil (approximately first 20 centimeters of excavation).

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

2.9.6 SATISFACTORY MATERIAL

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

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

2.9.7 BACKFILL COMPACTION

In the absence of Host Nation requirements and geotechnical recommendations, fill and backfill must be placed in layers of 20 centimeters loose thickness and compacted to a minimum 95% of the maximum dry density as determined by Host Nation test method equivalent to ASTM D-1557 (Modified Proctor test). Provide density tests on all lifts at a frequency of 1 test per 40 square meters. 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 subgrade must be inspected and approved by the Contractor’s Geotechnical Engineer prior to placing concrete. Repair earthwork areas as recommended by the Contractor’s Geotechnical Engineer, and approved by the KO.

2.9.8 ENGINEERED SOIL SUPPORT SYSTEMS

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

2.9.9 SITE GRADING

Provide site grading that directs storm water runoff away from proposed features by grading as follows:

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a. Finished grades of earth/grass/gravel surfaces adjacent to concrete must slope away from all exterior edges with a minimum slope of 5% for the first 2 meters.

b. 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.

2.10 UTILITIES

No utilities are required as part of this project.

2.10.1 STORM SYSTEM

Provide a gravity storm drainage system to direct runoff away from improvements, eliminate ponding, and prevent erosion. Storm drainage shall be accomplished using grading and surface drainage.

Design stormwater runoff management in accordance with Host Nation requirements.

2.11 PAVEMENT

Design and construct one (1) unreinforced concrete slab to be blown up by a 40 kg (80 lb) cratering charge detonated from a distance. Construct according to the following requirements:

a. Portland Cement concrete meeting criteria in ASTM C143 with minimum cured strength of 20.7 MPa (3000 psi). Aggregate shall be sand, crushed stone, or gravel with maximum particle size of 30 mm (3/4 in).

b. 50 meter x 50 meter surface area.

c. 390 mm concrete thickness.

d. 1.0% grade from the longitudinal centerline for surface drainage.

e. Provide longitudinal and transverse contraction joints with maximum spacing of

6 meters. Join grooves shall be 3 mm (minimum) width and 76.2 mm (minimum) depth.

f. If subgrade soils are found to be high plasticity and/or have a high degree of saturation (clay), provide 205 mm (8 in) of granular base course. Include a coarse filter to prevent intrusion of fines into the base course.

The proposed concrete slab shall be made even with surrounding grades.

In the absence of Host Nation standards, design pavements per UFC 3-201-01, Civil Engineering and UFC 3-260-02, Pavement Design for Airfields.

2.11.1 MATERIALS

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

2.11.1.1 CONCRETE MIXTURE PROPORTIONS

Concrete mixture proportions must be the responsibility of the Contractor. Mixture proportions must include the dry weights of cementitious material(s); the nominal maximum size of the coarse aggregate; the specific gravities, absorptions, and saturated surface-dry weights of fine and coarse aggregates; the quantities, types, and names of admixtures; and quantity of water per cubic meter concrete.

All materials included in the mixture proportions must be of the same type and from the same source as will be used on the project.

2.11.1.2 FORMS

Materials for forms must be plywood, metal, metal-framed, reinforced fiberglass, or plywood-faced to provide continuous, straight, smooth, exposed surfaces.

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2.12 SIGNAGE

Provide signs in Croatian and English to be posted at the appropriate standoff distances. Unprotected personnel can be no closer than 1,610 meters to the slab location. Adhere to information listed in IAW AR/DA PAM 385-63, Range Safety, Chapter 15, Mines, Firing Devices, Trip Flares, Simulators, and Explosive Charges.

No parking signs must be posted as well to ensure that no vehicles are parked within standoff distances.

2.13 LANDSCAPING

Provide grass seed and 20 centimeters of topsoil on the site in areas that do not have pavement or a building within the limits of disturbance. Seeds must be locally sourced from a certified plant nursery, and native to the area. Provide seed coverage density per manufacturer/supplier’s recommendations. Provide watering, weeding, and any other necessary care to establish growth. Limit planting to times of the year per local codes and/or manufacturer/supplier’s recommendations. Replace topsoil and seeds, at Contractor’s expense, in areas which do not have new growth coverage of 75% before the warranty period ends.

END OF SECTION