Tech.Specs. - 191T7024Q0015.pdf

Embassy of The United States of America

Rome, Italy

VILLA TAVERNA

New Sewage system next to the Facilities Rooms

Facility Management – 02/13/2024

Summary

1. GENERALITY

1.1. SUBJECT OF THE CONTRACT 4

1.2. GENERAL REQUIREMENTS OF THE WORK 4

2. DESCRIPTION OF THE WORKS

2.1. SECTION TYPE 7

2.2. INSTALLATION OF PIPES 8

2.3. INSTALLATION OF PORPHYRY CUBES 8

2.4. INTERFERENCES IN GENERAL 9

2.5. CONNECTIONS BETWEEN NEW SEWAGE SYSTEM AND THE PREMISES OF THE SERVICE SWING 9

3. SOLICITATION CHARACTERISTICS

3.1. CONTRACT PHASE 10

3.2. IMPLEMENTATION PHASE 10

3.3. CONCLUSION PHASE 11

3.4. PERFORMANCE TIME AND PENALTIES FOR DELAYS 11

3.5. SUBCONTRACTING AND PIECEWORK 11

3.6. WORK IN PROGRESS 12

3.7. PARKING 12

3.8. WORK IN GENERAL 12

4. CONSTRUCTION SITE SAFETY

5. PROCEDURE FOR EXECUTING THE WORKS

5.1. MATERIAL ACCEPTANCE RULES 13

5.2. GENERAL RULES 13

5.3. QUALITY OF MATERIALS 14

5.4. EQUIVALENT MATERIALS 14

5.5. WORK FOR SEWAGE SYSTEM 15

5.6. INTERFERENCES, CROSSINGS, PARALLELISMS AND DISTANCES BETWEEN SUBSERVICES 17

5.7. BACKFILL 18

6. ROAD WORKS

6.1. ROAD RESTORATIONS 18

6.2. INSTALLATION OF MANHOLE COVERS 20

7. TECHNICAL REQUIREMENTS FOR THE EXECUTION OF RENTALS AND TRANSPORT ... 21

7.1. PROVISIONAL WORKS 21

7.2. RENTALS 21

7.3. TRANSPORTATION 21

8.1. SITE ORGANIZATION AND SAFETY 22

8.2. DAMAGE 24

9. PRESENTATION OF OFFER

10. MATERIAL SPECIFICATION

11. REGISTRY OF SUBMISSION

12. DRAWINGS

1. GENERALITY

1.1. Subject of the Contract

The object of this contract concerns the works relating to:

- the new sewage system connected to the Service Swing of Villa Taverna;

-removal of old and damaged existing one.

The works are located within the pertinent area of the Park called "VILLA TAVERNA".

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.

1.2. General Requirements of the Work

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.

It stands to reason that all the costs for the issue by the competent Authorities of any access permits or temporary occupation of the external area are borne by the Contractor (hereinafter the

Company or Contractor).

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 30 (thirty) calendar and consecutive days, including holidays and semi-holidays from the date of the Notice to Proceed:

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 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, removals and clearing of bushes 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 and assembly, Company profits, charges for labour, transport, freight and materials, etc.

2. DESCRIPTION OF THE WORKS

The design of the works has the purpose of replacing the old Sewage system located inside the "VILLA

TAVERNA", aside the Service Swing.

Picture 1 – Orthophoto, in red the sewage system in subject

More specifically, the works will concern:

• Fencing of construction site areas and preparation of the storage area and eventually temporary path for the Villa Taverna‘s users;

• Removal of existing porphyry cubes, cleaning and storage for future installation;

• Demolition of road foundations (screeds of any type);

• Excavation with a fixed section until the existing old pipes are reached, removal the existing pipes and new excavations until the height necessary to create the slopes is reached;

• Installation of special pipelines:

• Demolition and replacement or rebuilding of the collection and derivation pits;

• Create the type section, as shown in the picture 3 with sand, backfill, 10cm screed and porphyry cubes previously removed;

• Replacement of all cast iron covers with others of the D400 type;

• Testing of the sewage line;

• Construction site dismantling and cleaning of areas;

Picture 2 – Plan of the intervention

2.1. Section Type

The type section must be in dimension strictly necessary to work safely. The new pipe shall be laid on a "bed" of sand, and subsequently covered with sand until at least 10 cm is completely covered.

Subsequently we will proceed with the backfilling of the resulting soil, up to the level established by the

COR. Once the soil has been compacted, a concrete screed shall be created with electro-welded mesh

Φ6/20cm and a height of no less than 10 cm. This allows it to better withstand the thrusts of the weight forces above and the possible movements underneath the soil.

Finally, the porphyry cubes shall be positioned according to the description indicated in the following paragraph

Picture 3 – Section Type

2.2. Installation of Pipes

As for as concern the pipelines, we have to use the PVC Pipes for sewage, PN16 diameter 225mm, thickness 13,4mm, Dark grey colour RAL 7011. Included socket and rubber ring joint. You can use with gluing joint or rubber ring socket type FORSHEDA 601 POWER-LOCKTM or solvent socket or plain ends.

2.3. Installation of Porphyry Cubes

A “bedding” layer must be laid on the concrete screed, which can be composed of sand with a rather large grain size (3-6mm crushed stone) or sand premixed dry with cement in the right doses.

The installation of the porphyry cubes must respect the geometry of the existing one.

Subsequently we shall proceed with the "wetting" and "beating". This phase is essential to stably compact the bedding layer and stabilize the porphyry elements.

Sealing can be done in various ways. In this project, we shall use the cement grout, a semi-liquid mixture make of sand of suitable grain size mixed with cement and water in equal proportions. The sealing in cement grout will make the pordifi elements stable and anchor them stably to each other, preventing the growth of weeds and the nesting of insects.And finally we shall proceed with the final cleaning.

2.4. Interferences in General

Inside the "VILLA TAVERNA" park, and above all in the proximity of the intervention area, there could be various interferences, of an electric, water, each of which must be respected, and/or replaced or moved.

The interference item includes all manufacturing, materials and/or services necessary for the perfect functionality of the interference found. Therefore, excavations and backfilling, the supply and installation of concrete, sand, wells, cast iron manhole covers, pipes of the same material and/or section as the existing one are included.

2.5. Connections Between New sewage system and the premises of the Service Swing

All the pipes of the various rooms of the Service Swing must be reconnected to the new collection pits, using new pipes with a diameter equal to the existing one or greater.

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 of the various interventions and relative length of time 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 and/or Safety Coordinator.

· 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.

· 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 to 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 09.30.

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.

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 carried out correctly, that it is in compliance with the technical specifications and that the systems operate correctly.

· 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 as well as all the systems. 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 following of this document, 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:

• 60 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.

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 Residence. 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 CORand Safety

Coordinatoor.

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

of the As-Builts.

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. The item includes the following:

The lump sum item also includes the supply of cables, pipes, switches, site electrical panels, various specialized technical services, rental, transport and subsequent removal.

5. PROCEDURE FOR EXECUTING THE WORKS

5.1. Material acceptance rules

The materials required for the construction of the works, whatever their origin, shall 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 shall 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.

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.

5.5. Work for Sewage System

1) Pipe handling

a) Loading, transport and unloading

Loading, transport by any means, unloading and all maneuvers in general must be carried out with the greatest possible care, using means according to the type and diameter of the pipes and adopting all the necessary precautions in order to avoid breakage, cracks injuries or damage in general to the materials constituting the pipes themselves and their coating, if any.

Therefore, protruding and protruding bodies, excessive sliding, contact with which deterioration or deformation of the pipes can still occur. In the construction site one must prepare what is necessary (one will have to prepare to install the pipes, the special pieces and the accessories to be installed).

b) Stacking and storage

The stacking must be carried out by arranging the pipes in stacks in pitches suitably located along the route on a flat and stable area, sheltered from the sun's rays in the case of pipes subject to deformation or deterioration caused by significant thermal variations.

The base of the stacks must rest on suitably spaced tables or on a suitable support bed.

The height will be contained within the limits suitable for the materials and diameters, to avoid deformations in the base pipes and to allow easy sampling.

Stacked pipes can be blocked with wedges to avoid sudden rolling; protective measures, in any case, must be adopted to prevent the heads of the pipes from being damaged in any way.

The ends of the pipes intended for the conveyance of water for human consumption must be protected with suitable caps, in order to avoid dirtying the internal surfaces. For deformable pipes, the ends will be reinforced with provisional crosspieces. The joints, gaskets, bolts and materials in general the rays deposited, if perishable, be rays deposited, until the time of their use, in closed spaces inside containers protected from the sun or from heat sources from with oils or fats and not subjected to loads.

2) Excavation for the pipeline

a) Preliminary excavation operations

Signage of the construction site on the road.

For pipelines to be laid on the road, the Contractor, who remains solely responsible for the suitability and regularity of the road signs, is required to arrange for the laying and efficient maintenance of the prescribed signals, warning signs, trestles, walkways, sheet metal of any type measure and size, lighting, traffic light systems, etc., as well as any surveillance and protection of the works, according to the provisions in force on the subject.

The Contractor will remain solely responsible, in the event that, as a result of the unreported and reported works, an accident of the works occurs and as specified in other points of the work and persons.

3) Pipe laying

a) Laying of pipes on site

During the laying operation, it must be avoided that debris or foreign bodies of any kind enter the inside of the pipes and that their internal surface is in any case damaged; the ends of each section of the pipeline during the plant must in any case be closed with a wooden plug, it being forbidden to carry out these closures in any other way.

The installation must be carried out by personnel and at least one installer must have the qualification of plumber.

The two ends of the pipe to be positioned will be cleaned with a suitable brush, eliminating any traces of earth or other foreign material.

The laying of the pipes will be carried out on the flattened and leveled bottom of the cable, eliminating any roughness that could damage pipes and coatings.

The laying bed will consist, in the cases in which it is prescribed by the lower management of works for a continuous support of the pipeline, in a layer of sand that does not contain small stones, spread on the bottom of the excavation, with a thickness of not more than 15 cm measured under the generatrix of the pipe that will be laid there.

If the pipes are to be laid on rocky ground and it is not possible to remove all the roughness, the thickness of the laying bed must be used suitably, by COR’s approval.

Where it becomes necessary to provide the bedding or to use materials other than those coming from the excavation for the first burial, one must ascertain the possible appearance of corrosive phenomena by adopting appropriate countermeasures.

In no case should the position of the pipes be regularized using stones or bricks or other discontinuous supports.

The laying surface - which will be leveled with special targets according to the excavation "levels"

(by placing and quoting stakes both in the points on the bottom of the pit that correspond to the vertical lines of the changes in slope and direction of the pipeline, and in intermediate points, so that the distance does not exceed 15 meters) must guarantee absolute continuity of support and, in sections where settlements are feared, particular measures must be taken such as: use of suitable suitable materials, special treatment of the bottom of the trench or , if necessary, stable discontinuous supports, such as saddles or shelves.

In the latter case, the discontinuity of contact between the pipe and the saddles will be ensured by the interposition of suitable material.

The exact position where the fittings or special pieces and equipment must be placed hydraulics must be recognized or approved by the COR .

The use of unessential sections of pipe is prohibited.

During the execution of the installation works, all necessary precautions must be taken to avoid damage to the pipeline elements already installed.

Therefore, with the necessary precautions during the works and with adequate supervision during periods of suspension, the fall of stones, boulders, etc. will be prevented. which can damage the pipes and appliances.

Appropriate embankments and detours will prevent the trenches from being invaded by the aqueous water and likewise, with backfilling carried out in due time without however involving the joints, it will be avoided that, if the flooding of the cables occurs despite every precaution, the pipelines that are empty and closed to extremes can be raised by the waters.

Any damage of any entity that occurs in such cases for lack of adoption of necessary precautions are the responsibility of the Contractor.

b) Installation of special pieces and hydraulic equipment .

Special pieces and plumbing fixtures will be placed following all restrictions before indicating for pipes. The special pieces will be perfectly coaxial with the pipes.

5.6. Interferences, Crossings, Parallelisms and Distances Between Subservices

1) Generalities

In those points, along the route of the excavations, where the presence of underground systems and pipelines of the electricity, water, gas, telephone, or other networks may be foreseen, the Contractor is obliged to arrange for its workers to use the utmost diligence and circumspection to prevent damage being caused to the personnel involved in the works and the services themselves.

To find out the location of the latter in advance, the Contractor must ask the Commission and possibly the Maintenance Manager.

It remains established that the Contractor himself will have to fully and directly trace any and all damage caused by the same as a consequence of the execution of the work committed, without any deriving from this to the Principal.

Inaccurate indications provided by the owners or managers of the underground services do not relieve the Contractor of responsibility for damages that the same may cause to the services themselves during the execution of the excavations.

2) Distances of the pipeline from existing pipes and underground cables

The pipeline will be kept at the maximum possible distance from other underground pipes and cables

(electricity, telephone, etc.).

For urban pipelines:

• in parallelisms, if exceptionally the distance is reduced to less than 30 cm, the coating will first of all be checked with particular care using a spark detector to verify continuity at every point and then a supplementary coating will be performed; in the event that there may be contact between the parties, dowels of insulating material (eg bakelized cloth, PVC, etc.) with a thickness of at least 1 cm will be inserted;

• at intersections there will be a distance of at least 30 cm; if exceptionally it should be reduced, a supplementary lining will be carried out as above for an extension of 10m upstream and 10m downstream; if there is a risk of contact between the parts (eg due to settling of the ground), a slab of insulating material will be interposed with a thickness of at least 1 cm, a width equal to 2

÷ 3 times the diameter of the largest pipe and a length depending on the position of the conducted to other pipes or cables.

5.7. Backfill

The backfill shall be performed with the indicator material in the project documents.

The material must be placed in the trench in 20-30 cm thick layers, abundantly watered and removed, compacted below and laterally to the tube, to obtain good support free from voids and to prevent lateral settlements and displacements. Where necessary, the abutment can be made of lean cement conglomerate.

In any case, the UNI standards will be observed as well as the indications of the pipe manufacturer.

Backfilling of the inspected joints.

Once the leak test has been carried out, the joints that may have been left uncovered for visual checks shall be backfilled, with the methods and materials established in the previous point 1).

Definitive backfill

Once the hydraulic test has been carried out, the backfilling will be completed with the methods and materials established in the previous point 1).

Once the backfilling is completed, top-ups shall be carried out in the off-road sections to allow the restoration of the level of the ground floor - as it will have to be at the time of testing - after the natural settling of the backfill.

In the trunks under the road care shall be taken to compact the backfill, proceeding with the necessary watering up to the level of the laying surface of the roadbed, reaching a degree of compaction and settling of the backfill account for which, once the restoration of the road structure, the walking surface of this does not undergo over time and due to the effect of traffic, even "heavy" in any way, with respect to the altimetric structure pre-existing to the laying operations. In the event that subsidence should occur, the Contractor, at its care and expense, must proceed with the appropriate and further compaction works and the restoration of the road structure, until obtaining the condition of stability.

6. ROAD WORKS

6.1. Road Restorations

Restoration of floors 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 simple sand: in order to fill the spaces left at the joints, the entire surface will be covered with a layer of sifted sand, which will have to slide and penetrate all the joints, even in several stages and at a distance over time , until completely closed;

b) 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;

c) with hot bitumen: in penetration 50/80 or 80/100 depending on the latitude and exposure, and which is poured into the joints by hand, with the aid of spout cups or special funnels, passed over and sprinkled with sand end;

d) with emulsion or cold conglomerates. Surface cleaning with sand and sawdust;

e) 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.

6.2. Installation of Manhole Covers

Before installation, the support surface of the closing and crowning devices must be suitably clean and wet; a bed of mortar containing 500 kg of type 425 cement per cubic meter of mix will then be spread, on which the painting will finally be placed. Alternatively, the works supervisor can order the use of special mortars.

The upper surface of the device must be, after installation, on the perfect plane of the road pavement. However, the thickness of the mortar that a thin layer is necessary must not exceed 3 cm; if greater thicknesses are required, alternatively, at the judgment of the Works

Management, the execution of a thin casting of conglomerate at 400 Kg. of cement type 425 per cubic meter of mix, packaged with aggregates of suitable granulometry and suitably reinforced, or the use of support rings in prefabricated reinforced concrete. Under no circumstances can stones, fragments, splinters or shards be inserted under the framework, dry or immersed in a bed of mortar.

If, following settling under load, the position of the framework should be adjusted, this must be removed and the remains of hardened mortar will be removed. The new layer of mortar will then be laid out, as previously indicated, adopting, if necessary, support rings.

The closing and crowning devices can be subjected to traffic no earlier than 24 hours after their installation, unless special mortars are used for the intervention. In the opinion of the Works

Management, to ensure the correct altimetric placement, to support the use of construction reinforcements, to be placed inside the small rooms and to be recovered after taking.

7. TECHNICAL REQUIREMENTS FOR THE EXECUTION OF RENTALS AND

TRANSPORT

7.1. Provisional works

The main regulations are contained in Legislative Decree 81/08 and s.m.i.

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.

8.1. Site Organization and Safety

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

1. upon delivery of the works, the Contractor must designate by name a technical assignment employed by or registered in a specific professional register with the task of directing the organization of the site and supervising the conditions of safety and use of the manpower, equipment and materials. Said technician is required to always be present on site .

2. 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.

3. 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.

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

5. The app, through its manager, will 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 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.

6. 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.

7. 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.

8. 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.

9. 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 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.

8.2. Damage

1. The Contractor is responsible for all measures, including provisional works and all obligations to avoid the occurrence of damage to the works, the environment, people and things in the execution of the contract pursuant to art. 14 of the DM n. 145/2000.

2. No compensation is due for damage caused by force majeure to temporary works, scaffolding or site vehicles and equipment .

9. PRESENTATION OF OFFER

10. MATERIAL SPECIFICATION

TUBI IN PVC RIGIDO

PER CONDOTTE DI FLUIDI

IN PRESSIONE

U-PVC PIPES FOR CONDUCTS

OF FLUIDS UNDER PRESSURE

PRICE LIST N°19 - DECEMBER 2022

LISTINO N°19 - DICEMBRE 2022

UNI EN ISO 1452-2

PN 6 - 10 - 12,5 - 16 - 20

ø 16 ÷ 500 mm

NF EN 1452

PN 6 - 10 - 16 - 25

ø 16 ÷ 315 mm

DIN-8061 - 62

Reihe 4, Reihe 5

PN 10 - 16

ø 16 ÷ 500 mm

PN 6 PN 10 PN 12,5

Øe sp prezzo sp prezzo sp prezzo sp prezzo sp prezzo sp prezzo

O/D th price th price th price th price th price th price mm mm €/mt mm €/mt mm €/mt mm €/mt mm €/mt mm €/mt

16 - - - - - - - - - - - - 20 - - - - - - - - - - - - 25 - - - - - - - - - - 1,5 1,87

32 - - - - 1,6 1,79 - - 1,6 1,79 1,9 2,08

40 1,5 1,97 - - 1,9 2,41 - - 1,9 2,41 2,4* 3,05

50 1,6 2,65 - - 2,4 3,78 - - 2,4 3,78 3,0* 4,68

63 2,0 4,07 - - 3,0 5,85 3,0 5,85 3,0 5,85 3,8* 7,46

75 2,3 5,65 - - 3,6 8,39 3,6 8,39 3,6 8,39 4,5* 10,71

90 2,8 7,81 - - 4,3 11,00 4,3 11,00 4,3 11,00 5,4* 13,69

110 2,7 9,32 3,2 11,23 4,2 13,33 5,3 16,72 5,3 16,72 5,3 16,72

125 3,1 12,20 3,7 14,57 4,8 17,15 6,0 21,25 6,0 21,25 6,0 21,25

140 3,5 15,29 3,7 16,62 5,4 21,63 6,1 24,60 6,7 27,07 6,7 27,07

160 4,0 19,78 4,0 19,78 6,2 28,36 6,2 28,36 7,7 35,49 7,7 35,49

180 4,4 26,14 4,4 26,14 6,9 37,48 6,9 37,48 8,6 48,40 8,6* 48,40

200 4,9 30,30 4,9 30,30 7,7 43,85 7,7 43,85 9,6 55,23 9,6* 55,23

225 5,5 38,33 5,5 38,33 8,6 55,10 8,6 55,10 10,8 69,72 10,8* 69,72

250 6,2 48,09 6,2 48,09 9,6 68,38 9,6 68,38 11,9 85,30 11,9* 85,30

280 6,9 63,31 - - 10,7 90,62 - - 13,4 114,06 13,4* 114,06

315 7,7 75,16 7,7 75,16 12,1 109,11 12,1 109,11 15,0 134,72 15,0* 134,72

355 8,7 105,38 - - 13,6 154,02 - - 16,9 190,66 16,9* 190,66

400 9,8 126,38 9,8 126,38 15,3 184,83 15,3 184,83 19,1 230,66 19,1* 230,66

500 12,3 200,05 12,3 200,05 19,1 290,79 19,1 290,79 23,9 362,12 23,9* 362,12

Tubi PVC per irrigazione, industria, acquedottistica e acque reflue Colore grigio scuro RAL 7011. I prezzi si intendono in Euro per metro lineare di tubo.

Lunghezza totale standard di 6 mt. incluso giunto a guarnizione o giunto a guarnizione preinserita e bloccata FORSHEDA 601 POWER- LOCKTM o giunto ad incollaggio o barra liscia.

Marchio di conformità alle norme:

I tubi in PVC rigido Lareter per condotte in pressione sono garantiti dalle certificazioni rilasciate dall’IIP, da CSTB, DVGW, WRAS e IMO.

I tubi possono essere forniti con colori diversi (blu, arancio, giallo...) e con lunghezze diverse (da 9 m a 0,15 metri).

Tubi Filettabili PVC-U standard in barre da mt.

5 lisce. Quotazione filettatura, colore, lunghezze diverse a richiesta.

U-PVC pipes suitable standard for threading in 5

mt. lengths plain ended, threaded, colour, length:

prices on request.

PN 10 PN 16 Imballo packaging

DN Øe sp prezzo sp prezzo Nr.

E/D O/D th price th price Tubi/bancale pollici mm mm €/mt mm €/mt pipes/pallet

3/8” 17,1 - - 2,6 1,77 Sfuso / Loose 1/2” 21,2 2,6 2,12 3,0 2,40 1103 3/4” 26,6 2,6 2,70 3,4 3,41 664 1” 33,4 3,3 4,17 4,3 5,66 436

1” 1/4 42,1 3,7 5,96 5,0 7,73 292 1” 1/2 48,1 4,0 7,30 5,4 9,83 207

2” 60,2 4,6 10,41 6,4 14,02 252 2” 1/2 75,0 5,3 15,77 - - 87

3” 88,7 6,0 20,22 - - 96 4” 114,1 7,0 32,70 - - 67

Tubi filettabili

PVC-U

U-PVC pipes suitable for threading

Tubi in PVC rigido per condotte di fluidi in pressione

U-PVC pipes for conducts of fluids under pressure

PVC Pipes for irrigation, industry, acqueducts and sewage Dark grey colour RAL 7011. Prices are expressed in Euro/mt. Total standard length of 6 mt. included socket and rubber ring joint.