Technical Specifications - SOW - Attachment 1.pdf

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Embassy of the United States of America

Rome, Italy

AIR CONDITIONING OF MULTI PURPOSE BUILDING (MPR) FIRST

FLOOR

Facility Engineering Office

23/03/2020

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CHAPTER 1

FOREWORDS

The Embassy of the United States of America in Rome needs to award a contract for the replacement of the old air conditioning system of the first floor of the Multi-Purpose Building within the Tri-Missions Campus in Rome, with a new direct expansion system completed with ventilation of the rooms.

CHAPTER 2

GENERAL

• The subject premises are office space within the Tri-Mission Campus that will not be operational during the execution of the work even though other part of the building, such as the ground floor will remain active.

• The object of the solicitation is the execution of work for the remaking of the air conditioning of the entire first floor and the Motor pool area on ground floor.

• The contractor shall supply all the materials and equipment, skilled and unskilled labor, technical supervision, as well as logistic and administrative support. The contractor shall also supply all accessory services such as: transportation, leasing, equipment and tools, disposal of debris, cleaning the work area and anything else necessary to complete the project in compliance with the present specifications.

• Maximum attention is required for the safety of personnel at work on the site. The workers shall operate in compliance with standard codes. In view of the fact that the building consists of office space and adjacent areas will remain active, temporary safety protection measures towards third parties shall be installed with care and attention, especially for the hours when the work site is closed.

• The Contractor shall be responsible for submitting, for approval by the COR, shop drawings and samples and data sheets of materials and supplies to be used.

• It shall be the contractor’s responsibility to verify all the quantities.

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Art. 2.1

DEFINITIONS

A glossary of terms and relative equivalents used in the drawing up of the tender documents are indicated hereunder:

Client, Administration, Project Supervisor, COR, CO: all these denominations identify the technical administrative staff, predisposed to handle the contract on behalf of the Embassy of the United States of America.

Contracting Company, Contractor: all these denominations identify the subject that undertakes to carry out the work described in the contract.

Contract, Purchase Order (P.O.), Work Order: these terms identify the contract document with which the project is awarded. The Client at his indisputable judgment shall make the formal selection of the different types of documents.

Art. 2.2

DESCRIPTION OF WORK

The work to be carried out is synthetically described in the following and in detail, in the other documents and drawings that compose the tender package.

Protection of floor and surfaces with cardboard sheeting and poly sheets.

Removal of all furniture in the offices on first floor and transportation of them to the storage location as directed by the COR, within the Tri-Missions Campus, where the furniture shall be downloaded and taken in charge by the Embassy warehouse.

Drainage of air conditioning system, removal of fan coils on first floor and capping of existing piping for future removal. NOTE: this activity may be required to be performed after hours or on weekends not to interfere with the activities ongoing on ground floor since the piping for first floor runs above false ceiling of ground floor. This operation involves as well additional protections and precautions not to damage with water floods or dust the ambient of ground floor that include the NEX supermarket.

Perform similar activity in the Motor pool offices on ground floor. NOTE: these offices shall remain operational during all stages of project. This requires special coordination to avoid that these rooms remain without air conditioning. See the staging plan in the following.

Demolition of existing false ceiling on first floor in the corridor and partially in the rooms as indicated in the drawing M201.

Demolition of selected portions of walls between corridor and rooms for the passage of air conditioning ducts, piping and cables, and for the installation of the recuperator as per drawing M201.

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Supply and installation of metal cable trays for the installation of the VRF piping.

NOTE: one cable tray is an infrastructure for the air conditioning of BCC, the area at the end of the first floor corridor that is out of scope presently. To avoid damaging the installations part of this SOW, this additional tray shall be installed from the motor pool terrace until the end of the corridor and shall be left empty for future use.

Supply and installation of VRF system as per drawing M201 and M202, including equipment, piping and controls.

Connect the master control of the VRF system to the existing Trane TRACER BAS, with connection to the electric shop on ground floor of MPR.

Supply and installation of the ventilation system per drawing M203.

Construction of new air intake on the roof, made with plastered bricks over roof supports to conceal the view of the intake duct.

Opening of an exhaust on the West facade of building as per drawing M203

Construction of a new catwalk in the corridor of first floor to allow the inspection and maintenance of the new VRF and ventilation systems.

Supply and installation of two hatches with retractile stairs to access the new catwalk from the corridor.

Reconstruction of false ceiling previously demolished.

Painting of ceiling and walls and final cleaning of premises.

Contractual obligations for carrying out the following tasks not described in the specifications or bill of quantities shall be added:

Closing the work area to public access with signs.

Preparing and submitting all design details necessary for correct execution of project (Shop Drawings) following the methodology and times determined in the chapter entitled "Times and Penalties".

Dispose off to a public dump all debris and material resulting from demolitions or work activity.

Supplying "As Built" drawings of all the work carried out, both on paper (1 copy) and on software in ".dwg" format.

Furnishing instruction and maintenance manuals for all the machinery supplied and installed, placed in box files according to type of system.

Provide 4 hours of training to the Embassy technician on the correct use controls and programming of the new systems.

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Art. 2.3

CONSTRUCTION STAGING

The project involves working in two distinct areas of MPR: the first floor and the Motor Pool offices that are on an adjacent little building on ground floor.

While the first floor offices will be emptied for the project and no activity shall be ongoing there, the Motor Pool area will remain operative for all time.

The construction shall proceed keeping in mind these two different zones.

While the activity related to first floor can proceed as speed as practical, it must noted that the existing fan coils in the upper floor are fed from below, and even the ground floor shall remain operation for all time of construction.

That constrain implies:

Keep noise to the minimum not to disturb the activity ongoing nearby. Demolitions should preferably be done before or after work hours, or on weekends.

Access the NEX area to work on piping shall be done out of the working hours and in agreement with the NEX manager who shall grant the access.

Motor pool offices shall be treated as a separate area. To this regard, the piping for the VRF can be installed and connect with a schedule that does not impact the activity, preferably working on Saturdays and Sundays. This area can be done when the entire project is almost at the end. Existing fan coils can remain operative until after the construction and start up of the new air conditioning and then removed.

Access to the Motor Pool terrace roof is always granted via the permanent ladder installed on the building

Art. 2.4

MATERIAL EQUIVALENTS

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.

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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 to be 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.

Art. 2.5

TENDER DOCUMENTS

The following documents shall form an integral part of the contract:

• The present Special Tender Document

• General Conditions in use by the Client

• Bill of Quantities

• Drawings M201, M202, M203

Art. 2.6

QUALIFICATION OF OFFERORS

1 SOA CERTIFICATION

The offeror shall demonstrate that it meets the project classification requirements (SOA’s certification). The SOA certificate is a qualifying system established by the current Italian laws and implemented through private qualifying agencies.

In the event two SOAs are required, an offeror with the intent to subcontract the effort must have at least one of the SOAs and its subcontractor must possess the other SOA.

The applicable SOA(s) for this project is:

OG 11, Cat II or, alternatively, OS 28, Cat II

The offeror shall provide with the proposal a copy of the SOA OG1, Cat III, or higher.

2 POOL OF FIRMS (CONSORZIO STABILE)

Any permanent Pool of Firms (Consorzio Stabile) shall provide with the proposal the here below listed required document/certificate otherwise its proposal will be rejected:

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A copy certified of the notarized legal document that established the permanent pool of firms

B the name and addresses of all associated firms.

C the names and the addresses of the associated firms proposed to perform the work.

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Art. 3

SOLICITATION CHARACTERISTICS

3.1 CONTRACT PHASE

Within one calendar week 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 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, license plate and color.

• 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.

3.2 IMPLEMENTATION PHASE

• During the course of the work, the contractor shall draw up and submit a weekly report describing the progress of the work and illustrating the work schedule for the following week.

• Normal working hours are from 08:00-08:30 to 16:30-17:00 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.

• 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 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.

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Art. 4

PERFORMANCE TIME AND PENALTIES FOR DELAYS

The contract performance time and the methods with which these times will be calculated are the following:

All periods of time shall take effect from the "Notice to proceed", a written communication from the Embassy to the Contractor informing him of the project award.

Period of time to organize the work site, select material and analyze alternatives, submittal of shop drawings, etc.: 30 solar days with effect from the "Notice to Proceed".

Period of time for the complete execution of the project, from the removal of furnishings to final cleaning: 60 solar days from the preceding phase, that is, 90 days from the "Notice to Proceed".

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

Art. 5

WORK 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 Project Manager, 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 be carried out within a pre-determined period of time, or to dispose the order of the performance of the work in the 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 COR's approval a detailed operative schedule and costs, which he will follow during the performance of the contract, in concurrence with the schedule in law 10-12-1981, n. 741.

Art. 6

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PARKING

No parking is allowed inside Embassy grounds. The Contractor's vehicles shall be allowed to enter only for loading and unloading materials.

Loading and unloading operations shall be carried out using only one vehicle at a time.

Consequently, during the accomplishment of the project the Contractor shall ensure that its vehicles are parked at its own expense outside the Government property.

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CHAPTER 7

SPECIFICATIONS

7.1 VENTILATION

Ventilation per ASHRAE: ventilation is based on an average occupation for offices of 5 people/100 m2 plus a per square meter addition as 0.3 liters/s per the office actual surface.

Considering an average size of offices equal to 15 m2, each office shall be fed with a flow of 8.25 liters/s, equivalent to 30 m3/h.

The ISC training center with its area of 44 m2 shall receive a total flow not less than 90 m3/h.

7.2 AIR CONDITIONING DATA

The load calculation has been done considering the following design temperature and humidity:

Winter T=0C°dry bulb, -1° Cwet bulb Summer T= 33° Cdry bulb, 26.4 ° Cwet bulb

The above conditions equals to 0°C, 81.7 RH and 33° C, 61.1 RH

7.3 VRF PIPING

All refrigerant gas piping shall be per UNI 12735-1 with thickness of 1 mm.

Size of piping is shown in drawing M202.

All piping shall be rigid with the only exclusion of the terminal branches that can be flexible and pre-isolated.

Piping cannot be cut with a saw, but only with a dedicated tool. The deburring must be removed with a specific tool.

After cutting the pipe shall be closed at the ends to prevent humidity and dust to come inside.

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Welding shall be done via brazing using welding material specific for copper to copper welding, in a Nitrogen atmosphere. Welding material shall be a composite with copper (CU 88.7%) and silver (Ag 5%).

Before welding pipes must be cleaned with Nitrogen.

Pressure test of the entire system after completion of installation of internal units, shall be done with Nitrogen at 30 BAR for 48 hours.

Following the pressure test, and before charging the system with the refrigerant, vacuum the system for 24 hours.

7.4 DUCTWORK

Ductwork shall be circular with galvanized steel class Z275. Thickness 0.5 mm up to dia. 250 mm and 0.6 mm from dia 250 to 400 mm.

Connections from main branches to the internal units shall be made with flexible pipe, as follows:

Make Tecnoventil.

Type: T2LP Construction: conduit flexible made of poliolefinic resins with steel spiral. External lining with a mattress of polyester 25 mm thick and plastic jacketing to provide a resistance to the penetration of the water vapor and prevent condensation.

Fire resistance: Class 1.

7.5 DUCT AND PIPE THERMAL INSULATION

Thermal isolation of rigid piping shall be made with TROCELLEN ISOCOMPACT GUAINE CL1/ALU-NET, pre-formed pipe made of polyethylene expanded with closed cells, of following characteristics:

Thickness: 15 mm Jacketing: Aluminum Fire resistance: Class 1 Thermal conductivity at 40° C = 0.0372 W/mK Resistivity to diffusion of water vapor: > 64000 Without CFC

Terminal branches of VRF piping shall be pre-isolate:

Thickness: 10mm Fire resistance: Class 1

Thermal insulation for rigid ductwork shall be made with TROCELLEN CLASS ALU Adhesive:

Thickness: 10 mm Jacketing: Aluminum Fire resistance: Class 1(CPR Class B-s2,d0) Thermal conductivity at 40° C = 0.0386 W/mK Resistivity to diffusion of water vapor: > 15000 Density: 28Kg/m3

Flexible connections to terminals are pre-insulated per previous chapter specs.

7.6 BALANCING DAMPERS

Balancing dampers make TECNOVENTIL type SIRTV made in galvanized steel with differential pressure gauge, differential pressure diagram and manual set point

7.7 CATWALK

The catwalk above the corridor of first floor shall be mate with KELLER pre-fabricated grilled panels suitable for a pedestrian load of 600daN/m2 (Class 1 load).

Material: Galvanized steel S235J Main bars: 35 mm (h) x 2 mm thickness Main bars spacing: 15 mm Secondary bars spacing: 76 mm

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Keller panels shall be blocked inside C studs type UPN 40 fixed along corridor walls with chemical anchoring.

Catwalk construction shall be submitted and signed by a professional engineer.

7.8 EXTERNAL UNIT PLATFORM

The weight of the VRF external unit is about 300 kg.

The unit cannot lie on the Motor Pool terrace deck but need to be supported by a steel structure resting on the two perimeter walls of the building.

The structure shall be designed and calculated by a professional engineer who will perform all invasive and non invasive analysis on the building.

The anchorage of the VRF unit to the supporting platform shall be done via anti seismic shock absorber, sized according to the weight of the unit and the action of wind, to grant a compression of the elastic element (spring) of 15 mm.

CHAPTER 8

CATALOG CUTS

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INDICE

AIR CONDITIONING MPR 1 st FLOOR

1) FOREWORDS ......................................................................................................... pag. 2

2) GENERAL ............................................................................................................... pag. 2 " 1) DEFINITIONS ................................................................................................. pag. 3 " 2) DESCRIPTION OF WORK ................................................................................. pag. 3 " 3) CONSTRUCTION STAGING ............................................................................... pag. 5 " 4) EQUIVALENTS MATERIAL ................................................................................ pag. 5 " 5) TENDER DOCUMENTS ..................................................................................... pag. 6 " 6) QUALIFICATION OF OFFERORS ........................................................................ pag. 6

3) SOLICITATION CHARACTERISTICS .......................................................................... pag. 8 " 1) CONTRACT PHASE .......................................................................................... pag. 8 " 2) IMPLEMENTATION PHASE................................................................................ pag. 8 " 3) CONCLUSION PHASE ....................................................................................... pag. 9

4) PERFORMANCE TIME AND PENALTIES FOR DELAYS .................................................. pag. 10

5) WORK PROGRESS .................................................................................................. pag. 10

6) PARKING ............................................................................................................... pag. 10

7) SPECIFICATIONS ................................................................................................... pag. 12 " 1) VENTILATION ................................................................................................. pag. 12 " 2) AIR CONDITIONING DATA ............................................................................... pag. 12 " 3) VRF PIPING .................................................................................................... pag. 12 " 4) DUCTWORK .................................................................................................... pag. 13 " 5) DUCT AND PIPE THERMAL INSULATION ........................................................... pag. 13 " 6) BALANCING DAMPERS ..................................................................................... pag. 14 " 7) CATWALK ....................................................................................................... pag. 14 " 8) EXTERNAL UNIT PLATFORM ............................................................................. pag. 15