Attachment 1 - Techincal Specifications.pdf

Embassy of The United States of America Rome, Italy

MEL SEMBLER BUILDING - WAREHOUSE

NEW DELIVERY PLATFORM

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Summary

1. GENERALITY

1.1. SUBJECT OF THE CONTRACT 5

1.2. GENERAL REQUIREMENTS OF THE CONTRACT 5

1.3. OFFER AND ALL-INCLUSIVE PRICES 6

2. DESCRIPTION OF THE WORKS

2.1. NEW STEEL PLATFORM 9

3. SOLICITATION CHARACTERISTICS

3.1. CONTRACT PHASE 13

3.2. IMPLEMENTATION PHASE 13

3.3. CONCLUSION PHASE 14

3.4. PERFORMANCE TIME AND PENALTIES FOR DELAYS 14

3.5. SUBCONTRACTING AND PIECEWORK 14

3.6. WORK IN PROGRESS 15

3.7. PARKING 15

3.8. WORK IN GENERAL 15

4. CONSTRUCTION SITE SAFETY

4.1. SITE ORGANIZATION AND SAFETY 16

5. PROCEDURE FOR EXECUTING THE WORKS

5.1. MATERIAL ACCEPTANCE RULES 19

5.2. GENERAL RULES 19

5.3. QUALITY OF MATERIALS 19

5.4. EQUIVALENT MATERIALS 20

6. WORKS

6.1. ROAD RESTORATION 21

7. TECHNICAL REQUIREMENTS FOR THE EXECUTION OF RENTALS AND TRANSPORT ... 22

7.1. PROVISIONAL WORKS 22

7.2. RENTALS 22

7.3. TRANSPORTATION 22

8. REQUIREMENTS ON QUALITY AND ORIGIN OF MATERIALS

8.1. MATERIALS FOR STRUCTURAL WORKS 23

9. CONCRETE

9.1. TYPOLOGY 23

9.2. CEMENT CONGLOMERATE FOR ELEVATED WORKS 23

9.3. EXPOSURE CLASS 24

9.4. COMPONENTS OF THE CEMENT CONGLOMERATE 24

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9.5. WATERFALL 24

9.6. HYDRAULIC BINDER 25

9.7. AGGREGATES. 25

9.8. ADDITIONS 26

9.9. ADDITIVES 26

9.10. SLURRY RHEOLOGY AND GRANULOMETRY OF AGGREGATES 27

9.11. WATER/CEMENT RATIO 27

9.12. WORKABILITY 28

9.13. AIR CONTENT 29

9.14. LAYING IN THE CONGLOMERATE WORK 29

9.15. FORMWORK 30

9.16. SEASONING 30

9.17. STEEL FOR REINFORCED CONCRETE 31

10. STEEL FOR METALLIC STRUCTURES

10.1. TYPOLOGY 33

10.2. IDENTIFICATION 33

10.3. MARKING 34

10.4. LOCATION OF MARKINGS 34

10.5. STAMPING 34

10.6. LENGTH 34

10.7. COMING TO COMPRESSION 34

10.8. STORAGE AND HANDLING ON SITE 34

10.9. PRE-ASSEMBLY ON SITE 35

10.10. ON-SITE ASSEMBLY 35

10.11. CUT 35

10.12. BEARING CONTACTS FOR JOINTS SUBJECTED TO COMPRESSION 36

10.13. STIFFENERS 36

10.14. STRAIGHTENING 36

10.15. WARM UP 36

10.16. TEMPORARY CONNECTIONS 36

10.17. ASSEMBLY 36

10.18. ALIGNMENT OF STRUCTURES 36

10.19. PILLAR LEVELLING 37

10.20. THEORETICAL DESIGN COUNTER-ARROWS 37

10.21. COUNTER-ARROWS FOR THE SETTLEMENT OF THE JOINTS 37

10.22. BASEPLATE BOLTS IN SLEEVES 37

10.23. WELDED JOINTS 37

10.24. WELDING PROCEDURE 37

10.25. TEMPORARY WELDS AND TEMPORARY CONNECTIONS 38

10.26. BUTT WELDS 38

10.27. WELDS OF PINS OR CONNECTORS 38

10.28. WELDING TEST 38

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10.29. SLAG REMOVAL 38

10.30. HOLES FOR BOLTED CONNECTIONS 38

10.31. PREPARATION OF THE ELEMENTS TO BE BOLTED 39

10.32. CONDITION OF THE BOLTS 39

10.33. WASHERS 39

10.34. VARIABLE THICKNESS WASHERS 39

10.35. LOCKING BOLTS 39

10.36. LENGTH LIMITS 39

10.37. BOLT PULL 39

10.38. CONNECTIONS THAT ALLOW MOVEMENT - SLOTS 39

10.39. CHEMICAL CONNECTORS 40

10.40. ANCHOR BOLTS 40

10.41. CORROSION PROTECTION - GALVANIZING 40

11. CHECKS

11.1. CEMENT CONGLOMERATE 41

11.2. STEEL FOR REINFORCED CONCRETE 42

11.3. STEEL FOR METALLIC CARPENTRY 42

12. TECHNICAL REQUIREMENTS FOR THE EXECUTION OF BUILDING WORKS

12.1.1. Bearing structure

12.2. DAMAGE 45

13. PHOTOGRAPHICAL DOCUMENTATION

14. MATERIALS SPECIFICATION

15. REGISTRY OF SUBMISSION

16. DRAWINGS

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1. GENERALITY

1.1. Subject of the Contract

The object of this contract concerns the works relating to:

- Removal of the existing lifting platform, complete with dismantling, loading and transport and recovery in disposal centers;

- Construction of an integrative steel structure, complete with foundation plinths, connected to

The works are located within the pertinent area of the Warehouse of the Mel Sembler Building.

The works object of the contract, described in this Scope of Work (hereinafter SOW), must be complete in all their parts, even for what is necessary not expressly mentioned, but in any case for the complete and workmanlike work, suitable for the meeting the anticipated need.

For a complete identification of the work, please refer to the technical conditions indicated in this SOW and to the drawings.

A complete maintenance booklet for each individual component must be delivered.

1.2. General Requirements of the Contract

All the works described in the descriptive and graphic documents must be carried out in the most scrupulous observance of the Laws, rules and regulations, in any case, in a workmanlike manner.

All non-reusable removal materials, contemplated in this deed, will be transported to public landfills or eventually to places indicated by the Client at the care and expense of the

Contractor for which suitable transport documentation must be provided and delivery to authorized landfills without the expenses such as the work will not be compensated.

It also remains established that all costs relating to site inspections and surveys that the

Company deems most appropriate during the construction site or temporary site inspection are included and compensated for in the lump-sum prices referred to in this contract.

Prior to the start of work, the Contractor must provide the Client with:

within days 15 (fifteen) calendar and consecutive days, including holidays and semi-holidays from the date of the award:

a construction site and assembly project , complete in every detail and completion of the project responsible for the basis of the tender signed by Company technical staff responsible for the production of the modules themselves;

a detailed work schedule;

Any executive Calculations, personally signed by a qualified person, adapted with suitable geological investigations, of the structures to be built including the construction details of the solutions adopted for their construction.

Upon delivery of the works, the Contractor will arrange at its own expense to organize and set up the site within the area dedicated to the works, being responsible for the custody of means

6 FAC ENGINEERING ROME/CaputoME and materials, as will be better specified in the following documents that the Company is required to draw up and send to the COR, before handing over the construction site, to the

CSE and to the Project Supervisor.

All charges relating to demolitions and removals of the relative areas of intervention must be considered included and compensated, including handling on site, any lifting and lowering, loading and transport to landfill of resulting materials and download charges.

All the charges relating to the preparation of all the temporary works, such as delimitations and anything else necessary for the safe execution of the works relating to the intervention in question, are also to be considered included and compensated in the lump sum prices.

Any material used (“gravel, scree…”) to make the site area suitable for vehicles is included.

With regard to removals and excavations, these must be carried out in an orderly manner and with the necessary precautions, in order to prevent any injury to workers and to avoid inconvenience or disturbance to the performance of activities within the area.

The production of dust must be limited, therefore the resulting materials must be, if necessary, covered and contained in "removable" containers until they are disposed of.

For the indications referring to the constructional and dimensional characteristics of the artefacts, reference must be made to the description of the works and to the current state of the places, which the Contractor must have compulsorily examined in the places concerned.

Finally, it should be noted that the unit prices applied to the various magisteriums must therefore include general expenses, any costs for design, assembly, Company profits, charges for labour, transport, freight and materials, etc.

1.3. Offer and All-Inclusive Prices

The works referred to in this deed are "lump sum contract". By accepting this contract, the

Contractor declares, to all intents and purposes, that in formulating the offer it has taken into account all the particular and general situations inherent in the contract covered by this deed and, in particular, that it has evaluated all the obligations and charges indicated or referred to even implicitly, also evaluating the new prices if present, with the relative analyses.

The Contractor agrees to carry out the works according to the conditions and methods established or referred to in this Deed, even implicitly.

In accepting this contract, the Contractor declares to have taken full knowledge of the area subject to intervention and its nature, which lead to greater costs, to have normally examined the general, particular and contractual circumstances relating to the contract and the execution times and that you have taken all of this into account in your offer.

The Contractor acknowledges that the consideration for the contract, agreed in the manner and under the conditions all indicated or referred to implicitly in this deed, is inclusive of all the works and furniture required for the perfect execution of the contract itself in its entirety and functionality, including charges of all kinds.

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With the lump sum prices of the estimate, it is intended to compensate the Contractor for any general and particular burden for undertaking the works to be fully functional and complete even in the non-mainstream parts and prescribed in these Specifications. Consequently, the estimated prices cannot be subject to changes due to incomplete or erroneous forecasts made by the Company in determining the offer during the tender. In the price the value of the offer, the Company must also include for all prices take into account the charges referred to in the

Administrative Conditions and in particular:

• on-site supplies of all materials;

• sources of energy and water supply;

• labor performance;

• rental of all necessary equipment of any kind;

• charges deriving from the general and particular conditions of these Regulations

(geotechnical tests and professional services, relating to checks, calculations, tests, documentation and certifications, static tests, technical tests - provisional, final test, etc.);

• contractual and tax expenses.

At the beginning of the works, the Contractor will take care and expenses to organize and set up its construction site on the areas granted, according to its instructions given by the COR, as per the timetable presented by the same Company, being responsible for the custody of means and materials , as will be better specified on the POS (operational safety) that the Company will be required to prepare in advance of the construction site installation.

All charges relating to the construction site of the intervention areas (delimitations, shelters, walkways, systems, etc.) which will be implemented from time to time by the Contractor must be considered included and compensated, even if not expressly provided for in these

Specifications, but however necessary for the correct execution of the contract. All charges relating to the preparation of all temporary works, such as scaffolding, shoring and anything else necessary for the safe execution of the works relating to the intervention in question are included and compensated in the lump-sum prices.

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2. DESCRIPTION OF THE WORKS

The works has the purpose of replacing the old lifting platform located in front of Warehouse’s

Entrance at the Mel Sembler Building.

Picture 1 – Urban Plan, in red the construction site area

More specifically, the works will concern:

• Fencing of construction site areas and preparation of storage area and temporary routes;

• Dismantling of the existing steel lift platform and its devoted electrical plants and engine;

• Removal of porphyry cubes and excavation with a fixed section for making plinths with dimensions of 70*70*70cm;

• Installation of a steel structure, as an extension to the existing one, including connections;

• Installation of self-supporting corrugated sheet metal, with Ꝋ8/15 electro-welded mesh and concrete with an Rck 300 Rck;

• Removal all existing railings;

• Installation of new hot galvanized metal railings like in picture 8 (including the color), for all delivery platform;

• Professional cleaning of the areas.

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Picture 2 – Existing Plan

Picture 3 – Project Plan - in blue the new one

2.1. New steel platform

The new rigid platform arises from the need to avoid continuous interruptions due to the malfunction of the electrical and mechanical system of the existing lifting platform. In fact, the platform has not been working for several years.

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Therefore, considering the needs and requests by GSO/Warehouse Department, it was decided to design a rigid and permanent steel frame to be used.

Reinforced concrete and steel structure

The extension of the current steel load-bearing structure, located at the entrance to the storage (First

Floor MSB, façade via Friuli), shall be achieved by creating two reinforced concrete plinths with Rck

300 and suitable reinforcement bars (see drawings attached). The two steel pillars shall be of the same type as the existing ones (HEA 180 S275), the perimeter beams shall be IPE 200 type S275.

The new flat slab, shall be made by installing self-supporting corrugated sheet metal with a minimum height of 5cm and a thickness 0.6/0.8mm. Reinforced concrete with a thickness no less than 5 cm

(+5cm of the corrugated sheet metal) with Rck 300 and electro-welded mesh Ꝋ8/15. (See attached drawings). The works must include the supply and installation of a metal railing (with the shape similar to the existing one, both in height, thickness and anti-fall plate.

Picture 4 – Existing Facade

Picture 5 – Project Facade - in blue the new one

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Picture 6 – Façade steel Frame project - in blue the new one

Picture 7 – Section steel Frame project - in blue the new one

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Picture 8 – new type of hot galvanized railings with color similar to the picture above

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3. SOLICITATION CHARACTERISTICS

3.1. Contract Phase

Within 15 calendar days of the date of award, the Contractor shall submit the following documentation to the Embassy’s Technical Office:

· A final and detailed work schedule with days required to carry out all the work requested in the contract.

· A final Safety Plan as set forth in the General chapter, finalized with the names of all actors and with the results of the discussions with the POSHO.

· A list of the names, complete with bio-data, of all the employees, as well as possible suppliers and sub-Contractors for specific work, who will require access to the work-site. Furthermore, the

Contractor shall submit a complete list of vehicles to be used during the project, indicating the make, model and license number.

· Designation of someone who will be in charge of the project on behalf of the Contractor and who will be fully authorized to discuss and decide together with the COR any variations during the course of the project, both concerning methodology of the work and the supplies.

· Designation of a Safety Manger who will address all safety issues and will monitor the daily operations.

· The register of submittals.

3.2. Implementation Phase

· The implementation phase starts with the Notice to proceed (NTP).

· No work shall be performed before the submission of the shop drawings and relevant approval, by the COR.

· No materials shall be installed prior the relevant submission and approval, by the COR.

· Normal working hours are from 08:00-08:30 up to 17:30 during weekdays. Any work can be carried out after normal working hours or during the week-end shall be agreed upon in advance with the

COR in order to obtain all the necessary authorizations and approvals.

· Demolitions, perforations and other high noise operations shall be carried out no earlier than 08.30.

The quiet rule shall apply even during the time 12.30 to 15.30, during work days.

· The work-site shall be kept as clean as possible.

· Areas for storing material shall be agreed upon, together with the COR, based on logistical-operative criteria.

· Any temporary interruptions of utilities shall be scheduled at least 5 days in advance and shall be subject to approval from the COR.

· Tests on the correct operation of the systems and consignment of parts of completed work shall be carried out in the presence of the person designated by the Contractor and someone authorized by the Embassy. The Contractor shall be responsible for drawing up the necessary delivery reports for the work and systems carried out and shall be subject to verification and acceptance by the COR.

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3.3. Conclusion Phase

· Once the project is completed a final inspection shall be carried out with representatives of the

Contractor and the Embassy, in order to verify that the project has been done correctly, that it is in compliance with the technical specifications.

· When the work has been completed and accepted by the Embassy, the Contractor shall submit the following documents to the Embassy’s Technical Office:

· detailed “as-built” drawings showing the new constructions, both the architectural/structural aspects.

The drawings shall be submitted on paper and software in ".dwg" format.

· technical cards of the most important materials used in the project, with a list indicating the location of the vendors and local suppliers.

· certification of conformity and tests carried out by the manufacturers for materials, as well as guarantee of the correct installation of all the materials by the Contractor with regard to the project realization and law requirements.

3.4. Performance Time And Penalties For Delays

The contract performance time and the methods with which these times will be calculated are fully described in the solicitation package and here listed for convenience.

The Registry of Submission, at the end of this SOW, shall, (but shall not be limited to), indicate the kind of material samples and the number of them for selection and approval by the COR.

Period of time the complete execution of the project, from mobilization to final cleaning:

• 40 solar days from the "Notice to proceed".

Penalties for delays in completing the project are those described in the tender documents.

3.5. Subcontracting and Piecework

In the subcontracting authorization request and in the subcontracting agreement, the Contractor shall promptly indicate the operational scope of the subcontract, in terms of performance, and specify in unambiguously, in particular, the name of the subContractor, the description of the work or services to be subcontracted – indicating the relative quantities or dimensional parameters referred to each execution area and process phase and referring to the project - the individual areas the individual process phases in which the subcontracted work or services will be performed.

In any case, the Contractor remains responsible towards the contracting authority for the execution of the works subject to subcontracting, relieving the contracting authority itself from any claims of subContractors or from claims for damages made by third parties as a result of the execution of subcontracted works.

It should be noted that in the event of subcontracting of works, the Contractor will be solely responsible for the technical and professional suitability of the subContractor.

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In addition, the expected times for the work covered by the contract, the subcontracting must be compatible and congruent with the work program of the main contract (Gantt Chart), by updating it, with the Contractor's commitment to produce the work program updated to the works manager before the start of the subcontracted works .

3.6. Work in Progress

In general, the Contractor shall have the faculty of developing the work in the way he believes more convenient and shall hand it over completed within the terms of the contract, as long as, in the opinion of the COR, this is not detrimental to the outcome of the project and the interests of the

Administration.

The Administration reserves the right to request that a specific task must be carried out within a pre-determined period of time, or to dispose the order of the performance of the work in a way it deems more convenient, especially in relation to requirements depending on the performance of work and delivery of supplies excluded from the contract, without the Contractor having the possibility to refuse or ask for special compensation.

Before starting the work, the Contractor shall submit for the CORs approval a detailed operative schedule and costs, which he will follow during the performance of the contract, in concurrence with the schedule.

3.7. Parking

Parking is allowed inside the Embassy. The Contractor's vehicles shall be allowed to park only for loading and unloading materials

3.8. Work In General

All works, civil, electrical, hydraulic, temporary safety of the sites, must be supported by plans and executive drawings for the construction site, which must be approved by the COR.

At the end of the work, the Contractor must provide files in original format (e.g. dwg, word, excel, etc.)

of the As-Builts.

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4. CONSTRUCTION SITE SAFETY

The safety of the construction site, including all charges foreseen by the current legislation, will be an important aspect for the planned works.

4.1. Site Organization and Safety

In addition to the provisions of the General Tender Specifications, the following remains established:

1. The Contractor is required, during the preparation of the site, the execution of the works and the folding of the site itself, to observe the rules on accident prevention and occupational hygiene referred to in Presidential Decree 27.04.1955, n.547, to Presidential Decree

07.01.1956, n.164, to Presidential Decree 03.19.1956, n.303, to Legislative Decree 81/2008 and subsequent amendments. mod. and supplement and subsequent provisions even if issued during the course of the works.

2. The Contractor has the obligation to comply with the "safety and coordination plan" prepared and delivered to him by the contracting station, or the one amended following the supplementary proposals formulated by him and to comply with the related implementing provisions that will be issued during the works by the "safety coordinator during the execution of the works"; the Contractor must also draw up and promote to the works management, in the manner established by the combined provisions of the aforementioned Legislative Decree

81/2008, an operational safety plan that takes into account the organisational, technical, procedural and technological reality of the Company itself. In the event of a temporary association of companies or a consortium, the above applies to the agent Company or

Company designated as group leader. In the event that the drafting of the safety and coordination plan is not envisaged, the Contractor must draw up and deliver its own replacement safety plan to the Works Management within the terms established by the Code. It should be noted that the amount of the charges deriving from the implementation of the provisions of the aforementioned construction site safety documents, expressly indicated in the specifications, are understood to be offset and included in the unit and/or bulk prices of the various items of the estimate. Having established that the percentage safety incidence of the safety charges of each individual estimate item is conventionally assumed to be equal to the ratio between the global work costs and the gross amount of the safety charges, the portion of the amount not to be subject to a discount will be equal to product of the aforementioned incidence by the gross amount booked.

3. The Contractor is obliged to adapt the working hours to the User's needs, with the obligation to obtain the information in advance.

4. The Contractor, through its manager, shall have to keep a register updated on the construction site, to be shown for inspection by the Project Manager himself or someone on his behalf, such as in the work itself or to be noted on a daily basis materials and inflows on site to be used in

17 FAC ENGINEERING ROME/CaputoME the works, those used in the execution of the works themselves and those removed from the site, with the resultant of the materials stored there. He must keep the packing slips/supply of materials in absolute order in special catalogues/binders prepared for this purpose.

5. It is absolutely forbidden to access the site for Company personnel who, where requested, refuse to submit to personal checks or checks on things in tow. The contracting station declines any responsibility if the refusal referred to in this paragraph causes delays, hindrances or even the impossibility of executing the contract.

6. The Contractor must maintain discipline on construction sites and is obliged to observe and away from his agents and his agents, the regulations and provisions in general issued by the contracting station and by the competent authorities for the good order and discipline of the works. The Contractor must employ suitable persons for his agents, foremen and workers. The construction manager has the right to order the change of duties of the Contractor's personnel in cases of ineptitude and the removal of personnel from the works in cases of insubordination and bad faith. In any case, the Contractor remains liable for damages caused by the inexperience, negligence or bad faith of the personnel themselves.

7. To guarantee the execution of the works, maintain personal surveillance compliance in all construction sites, even if external to the places of work, on all the means used by the

Contractor, as well as in the production and material processing workshops . When this is established by the regulations, by the specifications and by the contract and when the contracting station, in warning of any regulatory or contractual requirement, signifies to the contracting party that it wants to make use of this right, the contracting station itself has the obligation to inform the station in good time Contractor of the start of processing of objects related to the works and to give it all the information it deems necessary for the exercise of supervision. He must also indicate, if requested, the establishments from which he intends to order the materials necessary for the execution of the contract.

8. The works must be carried out in a workmanlike manner and the materials to be used must be of the best quality available on the market, free from any general and special defect, meet all the other requirements indicated in the technical specifications and in the specifications as well as in the Decrees bearing the conditions mandatory general techniques. When it comes to national products, the Contractor is free to procure materials where he deems the best, provided that they have requirements where prescribed by the contract, unless in these general conditions, in the special chapter or in the price tariff, special requirements are prescribed on origins some materials. The Contractor must justify, with the presentation of suitable documents, the actual origin of the materials, and lend himself to subjecting them to all the tests that the project manager deems appropriate to ascertain their quality and resistance. The materials cannot be used if they have not been previously accepted by the construction manager who has the right to refuse those he does not recognize as suitable for the goodwill of the works. The rejected materials must be removed from the construction sites within the term established by the construction manager and at a convenient distance; failing the Contractor to

18 FAC ENGINEERING ROME/CaputoME comply with the relevant provision, the site manager has the right to do so directly, charging the

Contractor the related expense, which will be deducted from the first advance certificate.

Acceptance does not affect the right of the contracting station to refuse, at any time until testing, the works performed with materials that do not comply with the contractual conditions, materials to proceed, pursuant to art. 18 of DM 145/2000, in the case of construction defects.

When the Contractor presents concrete for and the relative samples, the contracting station may examine proposals to replace the quality of the materials and their origin, if prescribed, however reserving the full right to accept and reject said proposals. If, even without opposition from the site manager, the Contractor has on his own initiative used materials of a better prescribed excess weight and size, or of a more accurate quality or mastery, he is not entitled to any price increase, whatever the the advantages that can derive from the contracting station;

and in this case the accreditation of the Contractor is done as if the materials found the weight and dimensions, the qualities and the mastery established in the contract. Conversely, objects or materials of weight, characteristics and/if smaller than those prescribed, or of lower quality or less accurate workmanship are used, they will be counted by reducing in proportion to the lower weight, smaller dimensions and different quality and processing the corresponding prices.

All general and specific charges, in any case connected to the obligations listed above, are to be paid in full and at the expense of the Contractor, having taken them into account in determining the individual unit prices, by measure or as a whole of the tender specifications.

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5. PROCEDURE FOR EXECUTING THE WORKS

5.1. Material acceptance rules

The materials required for the construction of the works, whatever their origin, will be of the best quality, and will be considered accepted only when, at the unquestionable judgment of the

COR, they correspond to those designated below in terms of nature, quality, durability, suitability and application. Except for special materials, all the works must come from quarries, factories, refineries, etc., deposits. chosen exclusively by the Company, which cannot make any exceptions, if during the course of the cultivation of the quarries, or operation of the factories, establishments, refineries, etc. the materials no longer met the prescribed requirements, or were missing and it was therefore obliged to resort to other quarries, in different locations, or of different origins, it being understood that, even in such cases, the stability unit prices in the list will remain unchanged and the sums for lump sum fees, as well as all that is observed to the quality and individual materials.

5.2. General rules

The articles below must establish the execution rules for the various works contemplated in the

Contract, as well as the technical specifications of the materials used.

As a general rule in the execution, the Company will have to comply with the best rules of the art as well as with the following works. For the categories of works that are not found in this

SOW, and for which no special rules have been prescribed, in particular for any work to be carried out economically, the Company must follow the best procedures dictated by the technique and comply with the orders that for this purpose, the Works Management will issue.

Works which, for any reason, immediately or subsequently prove to be badly performed, must be redone at the Company's expense, without the need for a formal request from the Works

Management; the possible presence on site of an overseer of the Principal cannot be invoked by the Contractor in discharge of its liability.

For the works on the networks and for the construction of artifacts and works of art, the

Company, having received the delivery, referring to the project cornerstones, will first carry out the tracing of the work by affixing the stakes and modifiers for the axis, for the sections and for the works of art; at his care and expense the pickets will be maintained until completion.

5.3. Quality of Materials

All the works envisaged by this SOW can be performed in perfect working order and with materials that meet the technical specifications indicated and/or referred to in this SOW and in the annexed documents.

The quality of the material used in the execution of these works must meet, when not otherwise specified by Company rules or regulations, the requisites required by the laws in force and by the official standards of good construction techniques.

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The Client, during construction and at any time, may take material samples from the manufactured articles used to verify their perfect correspondence with the approved types.

In this case, the Company will have to make an operating team available to the client to carry out the activities necessary for the execution of these checks, carried out with the help of a specific specialized Company. These charges will be charged to the Contractor, including any demolition and reconstruction of the works found to be non-compliant.

The Contractor must promptly report any defect or anomaly found on the materials supplied directly by the Principal.

5.4. Equivalent Materials

The Contractor shall verify and ensure that all the materials supplied are new and without defects and that their use and/or installation is carried out using the best techniques and fully respecting the instructions supplied by the manufacturers.

Special parts shall be manufactured solely by workshops that are highly qualified in that specific sector.

The makes indicated in this SOW (Scope of Work) are intended as a point of reference and therefore, the words or approved equivalent are implicit.

Therefore, the makes and products listed are deemed equivalent to each other. Different selections implemented by the Contractor shall be approved in advance by the COR, after submission of samples and technical cards.

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6. WORKS

6.1. Road Restoration

Restoration of flooring in porphyry cubes

The paving of porphyry cubes must rest on a substrate prepared at the right heights and with the necessary slopes for the disposal of rainwater. The level of the foundation must be uniformly shaped less than:

9/10 cm for the cube type 4/6

12/14 cm for the cube type 6/8

15/16 cm for the 8/10 type cube

18/20 cm for the cube type 10/12

20/22 cm for the cube type 12/14

23/25 cm for the cube type 14/18 compared to the finished pavement.

First, a layer of sand of about 6 cm must be spread on the pre-established substrate, possibly dry premixed with cement (about 10 kg per m2).

The cubes must be placed perfectly close to each other so that the joints are of a maximum width of 1 to 2 cm depending on the type. A layer of sand and cement sufficient to fill the joints will then be placed after which wetting and simultaneous beating with a suitable mechanical vibrator will take place.

In the final phase of laying, any cubes that will be broken or deteriorated will be replaced. The flooring must be smooth and without deformation. The longitudinal or transversal slopes for the drainage of rainwater must be at least 1 1 /2 %.

Sealing of pavements in cubes

An indispensable completion of a porphyry cube flooring is the sealing of the joints, which can be performed:

a) with cement grout: prepare a "drink" in equal parts of fine sand, cement and water and spread it on the previously moistened floor so as to penetrate completely into each joint. This grout must be left to rest until it has started the setting process and, with a pressurized water jet, the thickest part covering the flooring must be removed. Finally, it will be necessary to proceed with the complete and accurate cleaning of the floor with 2 or 3 passages of sawdust, first wet and then dry. It is essential that the sealing takes place quickly, immediately after laying the cubes, possibly still within the day;

b) other types of sealing are possible with special materials as long as they are tested and guaranteed, for example polyurethane resins poured with special equipment into the joints filled with crushed stone in suitable granulometry. Other procedures can be activated with asphalt mastics or with the addition of steel or synthetic fibers.

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7. TECHNICAL REQUIREMENTS FOR THE EXECUTION OF RENTALS AND

TRANSPORT

7.1. Provisional works

The main regulations concerning scaffolding and scaffolding, fixed metal scaffolding, mobile scaffolding, etc., are contained in Legislative Decree 81/08 and subsequent Legislative Decree No.

106 of 08/03/2009.

7.2. Rentals

The machines and tools given for hire must be in perfect working order and be equipped with all the accessories necessary for their operation. The maintenance of tools and machines is the exclusive responsibility of the Company so that they are in constant efficiency.

The "body" price includes: transport from the place of origin to the construction site and vice versa, assembly and disassembly, labour, fuel, lubricants, consumables, electricity, scrap and everything for the necessary functioning of the means. They also include general expenses and the entrepreneur's profit in the freight rates.

7.3. Transportation

If the size of the material to be transported is less than the payload of the vehicle requested for hire, no price reductions are envisaged.

The supply of consumables and the driver's labor are included in the transport prices.

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8. REQUIREMENTS ON QUALITY AND ORIGIN OF MATERIALS

8.1. Materials for structural works

The use of materials for the construction of the foundation and elevation artifacts in normal reinforced concrete and steel is subject to the quality and mechanical characteristics in the calculation report.

Their choice will comply with the requirements indicated in the TECHNICAL STANDARDS FOR

CONSTRUCTION referred to in DM 17/01/2018 - GU 42 of 20 February 2018 , suppl. ordinary.

All structural materials referred to below must be:

• UNIQUELY IDENTIFIED by the manufacturer, according to the applicable procedures referred to in NTC 2018;

• QUALIFIED under the responsibility of the manufacturer, according to the procedures set out in NTC 2018;

• ACCEPTED by the Project Manager through the acquisition and verification of the qualification documentation, as well as through any experimental acceptance tests.

9. Concrete

9.1. Typology

All reinforced concrete and prestressed concrete products must be made using only cements with a

CE certificate of conformity that meet the requirements of the UNI EN 197-1:2006 standard.

If there is a need to perform massive castings, in order to limit the rise in temperature inside the casting as a result of the hydration reaction of the cement, it is advisable to use common low-heat cements LH contemplated by the UNI EN standard 197-1:2006.

For reinforced and non-reinforced structures, both in elevation and in the foundation, the use of cement mix for structural use is prescribed as defined in paragraph 4.1 of the Technical Standards for

Constructions DM 14/01/2018.

The concrete mix is identified by the conventional characteristic uniaxial compressive strength measured on Rck cubes.

For reinforced structures, the use of the following types of concrete is prescribed:

9.2. Cement conglomerate for elevated works

• Exposure class (UNI EN 206-1:2006): XC1

• Maximum aggregate diameter: 20 mm (8mm for floors)

• Concrete cover: 20 mm

• Strength class: minimum characteristic value of the cylindrical compressive strength after 28

• days (EN 206) fck 25 Mpa (Eurocode 2 C25/30).

• Consistency class: S3

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9.3. Exposure class

Exposure classes for structural structural, according to the environmental conditions according to UNI

11104:2004 and UNI EN 206-1:2006

9.4. Components of the cement conglomerate

9.5. Waterfall

For the preparation of the mixtures, only clear water must be used, free of salts and chlorides, non-aggressive, compliant with UNI EN 1008:2003, in such a quantity as to obtain a mixture with good workability and variable consistency between fluid and plastic (S2-S5) , but in any case not less than

180 l/mc.

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9.6. Hydraulic binder

For the packaging of the mixtures, only the hydraulic binders envisaged by the provisions in force on the matter must be used, in particular Law 26/05/1965 n. 595 and harmonized standard EN 197-1 and equipped with a certificate of conformity in accordance with the standards EN 197-1 and EN 197-

2.

The use of aluminous cements is excluded.

The binder should be cement type 425 or higher.

9.7. Aggregates.

The aggregates that can be used, for the purpose of mixing the concrete, must have the usable CE marking according to Presidential Decree 246/93 and subsequent implementing decrees.

To prepare the mixtures, sand must be used in quantities of 0.46÷0.57 m3 with assorted grains of variable size from 0 to 7 mm and gravel or crushed stone in quantities of 0.65÷0.79 m3 with assorted elements of dimensions up to 30 mm.

The aggregates comply with the minimum requirements imposed by the UNI 8520 part 2 standard relating to the content of harmful substances. Particularly:

a) the content of acid-soluble sulphates (expressed as SO3 to be determined with the procedure set out in UNI-EN 1744-1 point 12) must be less than 0.2% of the mass of the aggregate depending on whether the aggregate is coarse or fine (aggregates with sulphate content class

AS0,2);

b) the total sulfur content (to be determined with UNI-EN 1744-1 point 11) must be less than

0.1%;

c) not contain forms of al-reactive or alternative amorphous silica in other objectives expansions on mortar prisms, evaluated with the accelerated test and/or with the long-term test in accordance with the methodology envisaged by UNI 8520-22, lower than the maximum book values in prospectus 6 of UNI 8520 part 2.

The aggregates constituting the aggregate will come from non-gypsum rocks free from freezing and friable elements, free from foreign substances such as organic, muddy, earthy and salty materials, will have a humidity of 2÷3% and comply with the harmonized part of the standard European UNI EN

12620.

The system for certifying the conformity of the aggregates, pursuant to Presidential Decree no.

246/93 is indicated in the following table:

System 2+ (factory production control certification) must be performed as specified in art. 7, paragraph 1 letter B, Procedure 1 of Presidential Decree no. 246/93.

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Lightweight aggregates must comply with the harmonized part of the European standard UNI EN

13055. The system of attestation of conformity is similar to the previous case.

9.8. additions

Any additions in quantities such as not to negatively change the performance characteristics of the cement mix must satisfy the requirements of the EN 450 standard and can be used in compliance with the stability criteria of UNI EN 206-1 point 5.1.6 and point 5.2.5 and UNI 11104 point 4.2.

The compliance of the additions to the relative standards must be demonstrated in the preliminary verification phase of the mixtures (conformity check) and, subsequently, whenever the DL requests it.

9.9. additives

The additives for the production of the product must possess the CE marking and comply, in relation to the particular product category to which they belong, with the requirements imposed by the respective tables of the UNI EN 934 standard (parts 2, 3, 4, 5).

For the other admixtures that do not fall within the classifications of the standard, the suitability for use must be verified according to the application and the properties required for the concrete.

It is one of the concrete producers to preliminarily verify the optimal dosages of additive to obtain the rheological and required performance as well as to evaluate any undesirable effects.

For the production of mixes, the constant use of highly effective plasticizers/water reducers or superplasticizers/water reducers is recommended to limit the water content of the mix, improve the dimensional stability of the concrete and the durability of the castings. in the summertime it is advisable to use specific additives capable of maintaining a prolonged workability of the concrete according to the times of transport and arrival.

For construction joints, it is possible to resort to the use of setting retardants and adhesives for construction joints.

In the winter period, in order to avoid damage deriving from the action of frost, in conditions of ripening below 5°C, in addition to superplasticizers, setting and hardening accelerating additives will be used. chlorides.

For castings subjected to the action of freezing and thawing, recourse will be had to the use of air-entraining additives as prescribed by the UNI EN 206 and UNI 11104 standards.

A summary scheme is proposed below for the various classes of additive according to the classes of exposure

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In the execution of the castings the following rules are prescribed:

1. Accurate vibration of all jets;

2. The interruption and resumption of the jets will be carried out in the unstressed areas;

3. If the temperature drops below +1 °C or in the presence of particularly hot winds, the jets may be interrupted.

9.10. Slurry rheology and granulometry of aggregates

For the packaging of them, aggregates belonging to different granulometric classes are not used. The percentage of use of each single granulometric class will be produced by the producer referred to in the segregation and 1.6 below. Furthermore, the granulometric curve obtained from the combination of the available aggregates will be the one capable of satisfying the installation requirements required by the Company (workability), and those of mechanical resistance to compression and durability by the designer.

The maximum size of the aggregate must not be greater than ¼ of the minimum section of the element to be made, the air gap reduced by 5 mm, the thickness of the concrete cover increased by

30% (also in accordance with the provisions of the Eurocodes).

9.11. Water/cement ratio

The data relating to effective water to be taken into consideration in calculating the equivalent w/c ratio is actually available to the mix, from the following relationship:

With:

a relative aggr of water released or thus taken from the aggregate if respective from a higher or lower humidity content than the absorption (humidity content which identifies the condition of saturated to dry a add aliquot of water introduced through liquid additives (if used in quantities greater than 3l/m 3 ) or mineral additions in the form of slurry;

an aliquot of water introduced through the use of ice chips;

one m aliquot of water introduced into the mixer/concrete mixer;

The water/cement ratio will therefore be considered as an equivalent water/cement ratio identified by the more general expression:

In which:

c dosage per m3 of cement mix;

c v dosage per m3 of fly ash slurry;

f s dosage per m3 of silica fume slurry;

K hp ; K fs equivalence coefficients respectively of fly ash and silica fume taken from the UNI-EN 206-1 and UNI 11104 standards.

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9.12. Workability

The manufacturer of the material will have to adopt the precautions in terms of ingredients and composition of the mix to ensure that the concrete all possesses the prescribed ability at the time of delivery of the concrete to the construction site.

Unless otherwise specified and/or agreed with the mix producer, the capacity at the time of casting will be checked when taking samples for acceptance checks of the conventional characteristic compressive strength according to the indications given in the Technical Standards for Constructions

DM 01/14/2018.

Workability will be measured in accordance with UNI-EN 206-1 after having unloaded at least 0.3 cubic meters of cement from the mixer. In particular, the workability of the concrete will be defined by the value of the depression at the Abrams cone (UNI-EN 12350-2) which defines the consistency class; The values of the reduction to the account can be found in the following table:

Concretes with a consistency class lower than S4 cannot be used.

It will be the responsibility of the supplier to guarantee in every situation the class of consistency prescribed for the various mixtures bearing in mind that adding water to the concrete mixer at the time of casting after the start of unloading the concrete from the concrete mixer is absolutely prohibited. The prescribed consistency class will be guaranteed for a time interval of 20-30 minutes from the arrival of the concrete mixer on site.

After this time, the contracting Company will be responsible for any lower capacity than the prescribed one. The concrete with workability lower than the prescribed one can be, a director of the

DL:

a) rejected (the burden of supply in this case lies with the executing Company);

b) if the conditions exist, in relation to the difficulty of carrying out the casting, to be able to conclude a complete filling of the formworks and a complete compaction.

The maximum time allowed from the production of the mix in the plant to the moment of casting must not exceed 90 minutes and it will be the manufacturer's responsibility to indicate the final loading time of the concrete mixer in the plant in the actual transport document.

It will be possible to operate in derogation of this requirement in exceptional cases when the transport times of the concrete from the batching plant to the construction site should exceed 75 minutes. In this case, the conglomerate can be used up to 120 minutes after mixing it in the plant, provided that it

29 FAC ENGINEERING ROME/CaputoME meets the prescribed workability requirements. Furthermore, in this eventuality it must be preliminarily ascertained by the manufacturer and evaluated by the Works Supervisor that the initial strengths of the cement conglomerate are not penalized due to high dosages of retardant additives used to reduce the loss of workability.

9.13. Air content

Simultaneously with the measurement of the workability of the conglomerate (with different frequency to be stabilized with the supplier of the conglomerate) the air content must be determined in accordance with the…