Attach2TechSpecs_20220404.pdf

DEPARTMENT OF THE ARMY

UNITED STATES ARMY GARRISON ITALY - DARBY MILITARY COMMUNITY

PUBLIC WORKS OFFICE

APO AE 09613

Project

ES 00092-1P

Modification to the Waste Water Treatment Plant

BLDG 5672

Depot AREA

TECHNICAL SPECIFICATIONS

Consisting of 84 pages

Prepared by: ________________________________ _________________

GIANLUCA LUCETTI, P.E.

Chief, Engineering Services

Date

Approved by: ________________________________ _________________

MARIA LOPEZ, P.E.

Public Works Manager Date

INDEX

SECTION Ia - GENERAL REQUIREMENTS

SECTION Ib - QUALITY CONTROL BY CONTRACTOR

SECTION IIIa - DEMOLITION AND REMOVAL

SECTION IIIb - EXCAVATION AND BACKFILLING

SECTION IIId - EXTERIOR DRAINAGE SYSTEM

SECTION IIIe - EXTERIOR WATER SYSTEM

SECTION IIIf - EXTERIOR SANITARY SEWER SYSTEM

SECTION IVa - REINFORCED CONCRETE WORK

SECTION IVb - REINFORCED CONCRETE

SECTION IVc - STEEL WORK

SECTION VIIf - RUST-INHIBITIVE TREATMENT FOR METAL SURFACES

SECTION XIIa - GENERAL REQUIREMENTS MECHANICAL SYSTEMS

SECTION XIIc - PLUMBING SYSTEMS

SECTION XIId - DRAINAGE SYSTEM AND SANITARY VENTILATION

SECTION XIIIa - ELECTRICAL SYSTEMS

SECTION Ia - GENERAL REQUIREMENTS

1a-1 WORK PHASING.

a. Work Schedule.

Whenever the nature of the contract and the work location are such that the work is to be performed in an area assigned to activities and services that cannot be interrupted, work shall be scheduled with concurrence of COR in such a manner as to cause the least possible inconvenience to the normal operations of mentioned activities and services. Contractor shall submit his proposed work schedule to the COR at the time of the pre-construction conference. Work start shall be contingent upon schedule approval.

b. Utilities Cut-Offs.

As a rule, cut-off of power and other utilities (water, sewage, heating system, etc.) is not allowed. All temporary connections necessary to insure continuous power distribution shall be provided. If cut-offs are necessary, they shall not exceed the period of time strictly needed to make the temporary connections. Cut-off shall be scheduled with the COR not less than 15 days ahead of time.

c. Alarm, Telephone and Televisions Systems.

Deenergizing of alarm, telephone and television systems is strictly prohibited. Should these systems, which may not appear on the drawing interfere with the contract work, they shall be temporarily diverted and fed by means of temporary connections to be adequately protected. Written approval must be obtained from COR prior to doing any temporary work.

d. System Reactivating.

At the completion of the work, all existing systems, including water, electrical and heating systems, shall be reactivated and placed in their original locations.

e. Temporary Protections.

Floors, carpets, and equipment that cannot be removed shall be adequately protected by temporary tarpaulins to be furnished and installed at no cost to the US Government. In addition, temporary protections shall be furnished and installed in some particular areas so as to allow performance of activities that cannot be interrupted or transferred. Also, the Contractor shall be responsible for removing, protecting, and reinstalling all furniture, shelves and furnishings that may interfere with the work course. A wrong or no evaluation of all requirements specified above does not constitute grounds for a request for additional compensation.

1a-2 JOBSITE CLEAN UP AND DUST CONTROL.

The contractor shall have sufficient trash/waste bins on site, and shall clean the worksite so that all discarded materials, debris and trash are placed in these bins at the end of each workday, and not left or allowed to accumulate anywhere else on the jobsite. These waste bins shall not be allowed to overflow with debris, and shall be emptied as soon as they become full. Haul roads shall be watered sufficiently to prevent excessive dust. The work area shall be swept regularly to prevent accumulation of debris. Equipment, construction materials and excavated soil shall be stored in a safe and orderly manner on the jobsite, in accordance with the contractor's approved area use plan.

1a-3 CONSTRUCTION AND DEMOLITION WASTE MANAGEMENT.

The contractor is considered the waste generator of all salvage, re-usable, re-cyclable and disposable materials derived from the demolition and removal works included in this contract and shall handle these materials as hereinafter indicated.

a. Salvage Material.

All salvage end items that the COR will have considered in good operating conditions shall be disassembled without damage, cleared of all dirt and scaling and then transported to the DPW Warehouse, Building 5156, Depot, where they shall be handled over undamaged.

b. Re-usable Material.

End items removed during contract accomplishment which cannot be re-utilized in future construction but which still have a commercial value shall be delivered to the DRMO, through DD Form 1348-1a. This material includes, but it is not limited to, canvas, textile consisting of scrap clothing, scrap aluminum including doors, windows and frames, copper, brass, bronze, and stainless steel, cables, electric motors, light and heavy metals in different sizes and thicknesses that the DRMO contractor can handle (3-4 m long), electrical and electronic equipment, and kitchen appliances. All the above material must be free of hazardous property and need to be segregated. The scraps generated in the Supply & Maintenance Area shall be transported to the DRMO yard only on Monday and Tuesday from 08:00 am to 15:00 pm by appointment through the COR. The scraps generated from other installations must be kept in place. DRMO will arrange the removal. However, the contractor shall request a pre-inspection of the material by DRMO through the COR.

c. Recyclable Material.

All construction and demolition recyclable waste material shall be delivered to authorized treatment facilities by the contractor.

d. Special Waste.

All special waste, either hazardous or not hazardous, shall be delivered by the contractor to authorized disposal facilities.

e. Waste Storage.

Construction and demolition waste shall be stored in waste specific containers provided by the contractor. Containers will be in good conditions, free from severe rusting, bulging, or structural defects. Containers shall be placed in area identified by COR. Containers shall be removed once full or on COR’s decision.

f. Certificates and Authorizations.

Recyclable Materials.

As regards to recyclable materials, the Contractor shall submit copy of the authorization of the treatment facility which they are delivered to and will certify that waste have been removed in compliance with applicable law requirements.

Disposable Materials.

As regards to material delivery to disposal facilities, the contractor will provide the COR and DPW Environmental Office with copies of the following documents:

• Authorization to transport construction and demolition waste;

• Authorization of the landfill;

• 4th copy of Formulario di Identificazione del Rifiuto.

Waste Manifest.

All transported waste will be accompanied by the Formulario di Identificazione del Rifiuto (waste manifest) to ensure a complete audit trail from point of origin to ultimate disposal.

The waste manifest must be completed in quadruplet, all dated and signed by the waste generator and countersigned by the transporter. The first copy of the manifest will remain with the waste generator; of the remaining three copies, (countersigned and dated by the receiver), the second copy will remain with the transporter, the third copy will remain with the receiver, and the fourth copy must be returned by the transporter to the waste generator within 3 months of delivery of the waste to the disposal/treatment facility.

g. Costs.

All operations included in this paragraph shall be carried out by the contractor with no additional cost to the US Government.

1a-4 AUTHORIZATION FOR INSTALLATION OF MATERIAL AND EQUIPMENT.

Before installing any material or equipment mentioned in the specifications, approval shall be obtained from the COR. Contractor shall submit material samples, shop drawings, manufacturer's literature, etc., to the COR 10 days prior to installation and shall proceed with installation only after receiving written approval from the COR. All material installed without COR's approval shall be removed.

The COR approval of submittals shall not be construed as a complete check, but will indicate that the general method of construction, materials, detailing and other information are satisfactory.

Approval will not relieve the Contractor of the responsibility for any error which may exist.

1a-5 CONTRACTING OFFICER'S REPRESENTATIVE TITLE ABBREVIATION.

The terms COR and "Direzione dei Lavori" used in the Italian version of these specifications are equivalent to the American term "Contracting Officer's Representative," which in the English version is indicated by the letters COR.

1a-6 DIGGING PERMIT.

The Contractor shall obtain a digging permit for all work areas affected by this contract (to insure that all the as-built information for underground services is received). This permit and related drawings must be received by the Contractor prior to starting any work. After receipt of the digging permit, the Contractor shall immediately notify, in writing the Contracting Officer of the permit receipt. The Contractor will be held responsible for any damages caused to existing services, as indicated on the digging permit and related drawings, and will repair such damages at his own expense. In any case before excavating, Contractor shall always perform a survey with an Underground Cables and Pipes Locator.

1a-7 PARTICULAR REQUIREMENT FOR WORK IN HEATING PLANTS.

When the contract requires the work to be performed inside heating plants, the contractor shall provide a new cylinder in the door lock and shall deliver two keys of the new cylinder and the removed cylinder to the personnel in charge of the maintenance. At the work end the contractor shall restore the lock to the original conditions and the temporary cylinder will remain his own property.

1a-8 ANTI-TERRORISM TRAININGS AND SECURITY POLICY.

The Contractor shall comply with the following security requirements:

a. AT Level I Training.

All contractor employees, to include subcontractor employees, requiring access Army installations, facilities and controlled access areas must complete AT Level I awareness training prior to issuance of Installation Access Passes. The contractor shall submit certificates of completion for each affected contractor employee and subcontractor employee to the COR or to the contracting officer,if a COR is not assigned, within 10 calendar days after completion of training by all employees and subcontractor personnel.

Certificate is valid for 1 year and training must be redone before the expiration date. AT Level I awareness training is available at the following website:

http://jko.jten.mil/courses/atl1/launch.html

b. OPSEC Training.

All contractor employees, to include subcontractor employees, requiring access Army installations, facilities and controlled access areas must complete OPSEC training prior to issuance of Installation Access Passes. The contractor shall submit certificates of completion for each affected contractor employee and subcontractor employee to the COR or to the contracting officer if a COR is not assigned, within 10 calendar days after completion of training by all employees and subcontractor personnel. Certificate is valid for 1 year and training must be redone before the expiration date. OPSEC training is available at the following website:

https://securityawareness.usalearning.gov/opsec/index.htm.

c. iWATCH Training.

The contractor and all associated sub-contractors must brief all employees requiring access Army installations, facilities and controlled access areas on the local iWATCH program prior to issuance of Installation Access Passes. This local developed training will be used to inform employees of the types of behavior to watch for and instruct employees to report suspicious activity to the COR. The contractor shall submit a declaration of training completion for each affected contractor employee and subcontractor employee to the COR or to the contracting officer if a COR is not assigned, within 10 calendar days after completion of training by all employees and subcontractor personnel. Training must be http://jko.jten.mil/courses/atl1/launch.html https://securityawareness.usalearning.gov/opsec/index.htm annually renovated.

d. Access and general protection/security policy and procedures.

The Contractor shall obtain entry passes for each employee. The Contractor shall inform his personnel that they may be subjected to search when entering or leaving the installation at the discretion of the Installation Commander. Upon completion of the contract work or upon employee termination the Contractor shall return all passes to the Contracting Officer or the COR. Contractor and all associated sub-contractors' employees shall comply with applicable access and security policies and procedures (provided by government representative). The contractor shall also provide all information required for background checks to meet installation access requirements to be accomplished by installation Provost Marshall Office, Director of Emergency Services, or Security Office. Contractor workforce must comply with all personal identity verification requirements as directed by DOD, HQDA, and/or local policy. In addition to the changes otherwise authorized by the changes clause of this contract, should the Force Protection Condition (FPCON) at any individual facility or installation change, the Government may require changes in contractor security processes.

1a-9 ENVIRONMENTAL POLICY.

The USAG Italy implements an EMS in accordance with EO13693, ISO 14001:2004(E), DoD, and IMCOM requirements. An EMS is an overall management system that includes organizational structure, planning activities, responsibilities, practices, procedures, processes and resources for developing, implementing, achieving, reviewing and maintaining the environmental policy of an organization. The USAG Italy EMS is designed to ensure that all personnel, including contract personnel, whose work activities can cause real or potential significant environmental impact, are aware of how their work supports the EMS and are competent to perform their roles, responsibilities and authorities while supporting the USAG Italy mission. Contractors and their personnel are required to be aware of, and comply with, the USAG Italy Environmental policy and legal and other requirements when performing work at an installation.

The contractor will provide the following information semi-annually to be used by the Government to address environmental performance relative to the goals of the USAG Italy Environmental Management System. Please note that the amounts reported are those used/generated by the contractor regardless of source (private purchase or government furnished). Reports for January

– June will be submitted by 15 July and reports for July-December will be submitted by 15 January each year.

Media Report Element #1 Report Element #2

Non-Hazardous Solid Waste Total Waste Generated (Kg) Amount of Waste Diverted from Landfill (Kg)

Construction Debris/Demolition Materials

Total Waste Generated (Kg) Amount of Waste Diverted from Landfill (Kg)

Compostable/Organic Material

Total Waste Generated (Kg) Amount of Waste Diverted from Landfill (Kg)

Hazardous Materials Total Used (Kg) Hazardous Waste Total Generated (Kg) Total Recycled (Kg) Energy Consumption - Electricity

Total Energy Consumed (MBtu)

Energy Consumption - Fuel Total Fuel Consumed (L)

Renewable/Alternative Energy

Total Consumed (MW)

Facility Construction/Renovation

Number of Buildings LEED Certified Silver or Higher

SqFt of buildings LEED Certified

1a-10 COMPLIANCE WITH LAWS, REGULATIONS, CRITERIA All construction works shall be performed in full accordance with applicable Italian and United States laws, regulations, codes, whichever is more restrictive at contract award date.

SECTION Ib - QUALITY CONTROL BY CONTRACTOR

1b-01. GENERAL.

The Contractor shall establish and maintain an effective quality control system to implement the requirements of contract clause entitled "Inspection of Construction (July 1986)". The quality control system shall comprise plans, schedules, and organization necessary to provide materials, equipment, workmanship, manufacture, construction, and operations which comply with contract requirements and shall identify personnel and forms to be used. The system shall cover construction operations, both indoors and outdoors, and shall be in accordance with the proposed construction sequence.

1b-02. COORDINATION MEETING.

As soon as practicable after receipt of Notice to Proceed and before start of construction, the Contractor shall meet with the Contracting Officer's Representative (COR) and discuss the Contractor's quality control (CQC) system. During the meeting a mutual understanding of the system details shall be developed including the forms for recording the CQC operations, control activities, testing, administration of the system for both indoors and outdoors construction, and the interrelationship of Contractor's inspection and control with the Government's inspection. Minutes of the meeting will be prepared by the COR and forwarded to the Contracting Officer who will make them a part of the contract file. There may also be other subsequent meetings will be called to reconfirm understandings. Minutes of these meetings will also be forwarded to the Contracting Officer.

1b-03. QUALITY CONTROL PLAN.

a. Prior to starting the construction, the Contractor shall furnish his CQC plan through the COR to the Contracting Officer for acceptance. Construction will be permitted to begin only after acceptance of the CQC plan or approval of that portion of the plan applicable to the particular feature of the work to be started. The QC plan proposed by the Contractor shall identify personnel, procedures, instructions, records and forms, and, as a minimum, shall include:

- A description of the quality management organization.

- The names, qualifications, duties, responsibilities, and authorities of each person assigned a quality control (QC) function.

- A copy of the letter to the QC manager, signed by an authorized official of the firm, which describes the responsibilities and delegates the authorities of the QC manager.

- Procedures to perform QC over other activities including subcontractors, manufacturers, and suppliers.

- Control testing procedures for each specific test.

- Reporting procedures for QC including proposed reporting formats.

b. After approval of the QC plan the Contractor shall notify the Contracting Officer in writing of any proposed change to his QC plan. Proposed changes are subject to acceptance by Contracting Officer.

c. The acceptance of the QC plan is conditional and will be predicated on a satisfactory performance during the construction. If it is determined that the QC plan, personnel, instructions, controls, tests or records are not providing a construction conforming to contract requirements, the Government will reserve the right to require the Contractor to make changes in his QC plan and operations, as deemed necessary to obtain the specified quality. Any changes required to the plan will be made at no cost to the Government.

1b-04. QUALITY CONTROL ORGANIZATION.

a. The Contractor shall identify an individual within his organization at the site of the work who shall be responsible for overall management of CQC and have the authority to act in all CQC matters for the Contractor.

b. A staff shall be maintained under the direction of the system manager to perform all QC activities. The actual strength of the staff during any specific work period may vary to cover work phase needs, shifts and rates of placement. The personnel of his staff shall be fully qualified by experience and technical training to perform their assigned tasks, and shall be directly hired by and work for the prime Contractor.

1b-05. SUBMITTALS.

a. The Contractor shall develop procedures for purchasing materials and equipment, subcontracting, and processing shop drawings, samples, certificates, and other submittals.

This procedure shall include the establishment of responsibilities to assure, at each level, adequate review and approval, timely delivery including verification procedures, and proper storage. Submittals of the shop drawings and/or manufacturer's data shall be, as specified, in accordance with contract clauses entitled "Materials and Workmanship" and "Shop Drawings."

b. Actions shall be taken to ensure that only materials and equipment which comply with contract requirements are purchased and delivered to the job site or used in off site fabrication, unless specific deviations are approved, as specified hereinafter. The COR may request a copy of the document of transportation of the provided material.

c. The Contractor shall review the contract requirements and verify that submittals are confirming to contract compliance. Within 10 days after receipt of notice to proceed, the Contractor shall submit a submittal control document listing and scheduling all submittal items required in the contract. This document shall be in duplicate and shall be addressed through the COR to the Contracting Officer. The control document shall include such items as construction schedules, monthly progress reports, shop drawings, manufacturer's literature, certificates of compliance, material samples, and guarantees. The document shall schedule for each item the dates of submittals. The scheduling of submittals shall be coordinated with the approved progress schedule; the information contained therein shall be reviewed and updated at each schedule update. Adequate time shall be allowed to the US Government for approval of submittals. The Contractor shall review the listing at each progress schedule update and copies of updated documents shall be submitted through the COR to the Contracting Officer in the specified quantity. Payments to the Contractor will not be made for material or equipment which does not comply with the Contract requirements.

d. The CQC organization shall be responsible for certifying that all submittals are in compliance with the contract requirements. Submittals to the Contracting Officer without evidence of the certification will be returned for resubmission.

e. The Contractor shall submit copies of all submittals through the COR to the Contracting

Officer.

f. Delays in the approval process shall not be the basis for consideration of a time extension when such delay is the result of the Contractor's failure to make proper and timely submittal, or make corrections in accordance with the specifications or the Contracting Officer's comments, or is a result of a resubmittal which is required because of an unsatisfactory original submittal. Approval action by the Contracting Officer will not relieve the Contractor of his responsibility for compliance with the contract but will indicate only that the general method of construction and detailing is satisfactory.

g. All proposed deviations from contract requirements shall be submitted in writing for approval by the Contracting Officer.

1b-06. CONTROL.

Quality control is the means by which the Contractor assures himself that his construction complies with the requirements of the contract plans and specifications. The QC system shall include at least the following three phases of control and management for all definitive features of work:

a. Preparatory.

This control phase shall be performed before beginning work on each definable feature of work. It shall include a review of contract requirements to assure that materials, sample, and equipment conform to contract requirements and that control testing procedures are finalized.

The control shall also include examination of the work area to verify that structures over which new work is to be placed conform to contract requirements; Contractor shall also verify that the required materials be on hand and properly stored. The COR shall be notified at least 24 hours in advance of each preparatory activity.

b. Initial.

This phase of control must be accomplished as soon as a representative portion of the particular feature of work has been accomplished and shall include examination of the quality of workmanship and a review of control testing for compliance with contract requirements, identification of defective or damaged materials, omission, and dimensional requirements.

The COR shall be notified at least 24 hours in advance of the initial inspection and such inspection shall be made a matter of record in the CQC documentation.

c. Follow-Up.

The follow-up phase shall be performed continuously to verify that control procedures are providing an end product which complies with contract requirements. Adjustments to control procedures may be required based upon the results of this phase.

d. Completion.

At the completion of all work or any increment, the CQC representative shall conduct a joint review with the COR. During this review the work shall be examined, quality control shall be examined, and a list shall be developed of work not properly completed or not conforming to plans and specifications. This list shall be included in the quality control documentation with an estimated date for correction of each deficiency. The Contractor shall make sure that deficiencies be corrected prior to the contract completion date. Payment will be withheld for defective or deficient features until they are satisfactorily corrected except as otherwise provided in the contract.

1b-07. TESTS.

The Contractor shall perform tests specified or required to verify that control measures are adequate to provide a product which conforms to contract requirements. The Contractor shall procure the services of an industry recognized testing laboratory or he may establish an approved testing laboratory at the project site. A list of tests which Contractor believes necessary shall be furnished to the COR. The list shall give the test name, specification paragraph containing the test requirements, and the personnel and laboratory responsible for each type of test.

The Contractor shall perform the following activities and provide the following data:

- Verify that the testing procedures comply with contract requirements.

- Verify that facilities and testing equipment are available and comply with testing standards.

- Check test instrument calibration data against certified data.

- Verify that recording forms including all pertaining documentation have been prepared.

The Contracting Officer reserves the right to check laboratory equipment in the proposed laboratory for compliance with the standards set forth in the contract specifications and to check the laboratory technician's testing procedures and techniques.

The Contracting Officer reserves the right to utilize the Contractor's control testing laboratory and equipment to make assurance tests and to check Contractor's testing procedures, techniques, and test results at no additional cost to the Government.

Cost incidental to the transportation of samples or materials will be borne by the Contractor.

1b-08. DEFECTIVE WORK.

The Contractor shall not build upon or conceal a defective work.

1b-09. DOCUMENTATION.

The Contractor shall maintain current records, on an appropriate form, of quality control operations, activities and tests performed including the work of suppliers and subcontractors. These records shall include factual evidence that the required activities or tests have been performed, including but not limited to the following:

- Type and number of control activities and tests involved.

- Results of control activities or tests.

- Nature of defects, causes for rejection, etc.

- Proposed remedial action.

- Corrective actions taken.

These records shall cover both conforming and defective or deficient features and shall include a statement saying that supplies and materials incorporated in the work comply with the contract.

Legible copies of these records shall be furnished to the COR weekly. The records shall cover work performed during the time period for which the records are furnished and shall be verified by persons designated by the Contractor.

SECTION IIIa - DEMOLITION AND REMOVAL

3a-01 GENERAL.

Breakups of predetermined dimensions and partial or total demolition of masonry and concrete surfaces, floor, etc., must be performed in a workmanlike manner, by taking the necessary precautions or by shoring the surfaces in order to avoid damages to the structures to be left in place, accidents, inconveniences or interference. Waste material shall not be thrown down, but rather, it shall be conveyed or guided downward, after wetting it to prevent raising dust. During demolition or removal work, the Contractor shall adopt every measure suitable to avoid deterioration of the items which may be reinstalled, or which, in the opinion of the COR, may be used at a later date.

These items shall be cleaned, guarded, hauled and set neatly in the storage areas indicated by the COR. The demolition work shall be limited to the work, or to its parts, and to the dimensions specified. Reconstruction of structures demolished over and above the quantities indicated, as well as rehabilitation of work damaged as a result of lack or omission of precautions or shoring, shall be performed by the Contractor. All waste material resulting from demolition and removal shall be handled by the contractor in accordance with para. 1a-03 of these specifications.

SECTION IIIb - EXCAVATION AND BACKFILLING

3b-01 EXCAVATION.

a. General.

During excavation, material suitable for backfilling shall be piled at a sufficient distance from the banks of the excavation to avoid backslides. All earthy material in excess or unsuitable for backfilling shall be delivered to the location indicated by the COR and within 10 km from work site. This does not apply to debris and rubble of all types, from which excavation material shall be rid of; these shall be disposed of at a dump, as prescribed at paragraph 1a-

02. In case excavation is performed in presence of water and water level is below 20 cm height, the contractor shall remove water at his expense using the means he deems suitable.

If water reaches higher levels, removal shall still be at contractor's expense only if the possible presence of groundwater is indicated on the drawings or in these specifications, and only to the extent indicated. In addition, the contractor shall prevent the access of water deriving from outside to the excavation site: in case water accumulates in excavated area, removal will be at contractor's expense. Struts and shoring shall be placed as necessary for the protection of the work and for the safety of personnel. Adequate precautions shall be taken for the protection of existing underground pipelines or electrical cables. Before any excavation is started, plans showing the approximate location of underground utility lines shall be furnished to the Contractor, upon his request. The area of excavation shall be delimited by trestles, gangplanks, and warning signs visible during night and day, to prevent injuries to persons, as prescribed by the ISPESL standards.

b. Trenches.

Trenches shall be of the necessary width for the proper laying of the pipes and electric cables, and the banks shall be as nearly vertical as practicable. The bottom shall be accurately graded so as to provide bearing for the pipe on firm soil. The clear space between the pipe and the trenches wall shall not exceed 8" (20 cm.) on either side of the pipe. Further excavation will be required for housing and sealing of pipe joints. In proximity of buildings, existing underground utility lines, and wherever specifically requested in other sections of these specifications or on drawing notes, trenches shall be excavated manually.

c. Excavation for Foundation and Appurtenances.

Excavation for manholes and similar structures shall be of sufficient dimensions as to leave a 12 inches (30 cm.) free space between their outer surfaces and the embankment or timber which may be used to hold the banks.

3b-02 BACKFILLING.

Trenches shall not be backfilled until foundation, pipes or cables have been inspected and approved.

Where, in the opinion of the COR, damage is likely to result from withdrawing of shoring, the latter shall be left in place. Trenches shall be backfilled with the excavated materials, if deemed suitable, free from large clods of earth, stones, and roots. Backfilling material shall be deposited in 15 cm.

(6") layers, thoroughly rammed until the trench is completely covered, and watered as necessary. Any material rejected by COR shall be replaced with material acceptable to the COR, coming from borrow pits located outside the US military base.

3b-03 REPAIRS.

All crossings of existing paved or asphalt coated surfaces shall be cut neatly vertical and horizontal.

At the completion of the work, pavement and sidewalks shall be restored to the original conditions.

Damaged lawns shall be sown again and damaged plants shall be replaced with others of the same kinds. Any damage caused during the work progress shall be repaired by and at the expense of the Contractor. The Contractor shall be responsible also for injuries caused to persons as a result of non-compliance with prescribed ISPESL norms.

3b-04 UNDERGROUND UTILITIES DETECTION In addition to above requirements, before starting the excavation, the Contractor must investigate with a metal detector furnished by himself the location of existing underground utility lines, e.g.

electrical, communications, water, TV lines, or any other utility which may not be shown on the existing condition drawings, in order to prevent damaging or interrupting any existing utility.

Investigation shall be done in the presence of the COR. Trial runs shall be done with the metal detector in the presence of the COR or his representative prior to the investigation. Investigation shall be done following COR approval of metal detector. The Contractor shall mark-up on a copy of the existing conditions the exact field location of the existing utility lines which are found during excavation. This copy shall then be submitted to the COR. Excavation work performed close to existing utility lines shall be done by hand within a 3 meter radius.

SECTION IIId - EXTERIOR DRAINAGE SYSTEM

3d-01 RELATED REQUIREMENTS AND DESCRIPTION OF WORK.

The work includes provision of new drainage system and related work. Provide the system complete and ready for operation.

3d-02 PIPES.

Shall be PVC solid wall pipes type SN4-U, conforming to UNI EN 1401-1. Fittings and flanges shall conform to UNI 7449. The joints shall be of the ball and spigot type with elastomeric seal.

3d-03 FRAMES AND COVERS.

Frames and covers shall be made of ductile iron, Class ISO 1083, in accordance with standard UNI ISO EN 124, Class D400, with round cover, ventilated, 60 cm diameter, opening on rotula.

3d-04 MORTAR.

Mortar for connections to other drainage structures shall be composed of one part by volume of Portland cement and two parts of sand. The quantity of water in the mixture shall be sufficient to produce a stiff workable mortar. Water shall be clean and free of harmful acids, alkalis, and organic impurities. Include with shrinkage additive in accordance with product manufacturer’s recommendations. The mortar shall be used within 30 minutes from the time the ingredients are mixed with water. The inside of the joint shall be wiped clean and finished smooth.

3d-05 BURIED UTILITY WARNING AND IDENTIFICATION TAPE.

Provide detectable aluminum foil plastic-backed tape or detectable magnetic plastic tape manufactured specifically for warning and identification of buried piping. Tape shall be detectable by an electronic detection instrument. Provide tape in rolls, 7,5 cm minimum width, green-colored for the utility involved. Use permanent coloring unaffected by moisture and other substances contained in trench backfill material. Bury tape at a depth of 30 cm below the top surface of earth or the top surface of the subgrade under pavements.

3d-06 DRAINAGE STRUCTURES.

Construct of reinforced concrete as shown on drawings. However, prefabricated concrete pits are acceptable upon submittal and approval of catalogs and shop drawings and upon meeting the wall thickness and reinforcing criteria indicated on drawings.

3d-07 INSTALLATION OF PIPE.

Each pipe shall be carefully examined before being laid, and defective or damaged pipe shall not be used. Pipelines shall be laid to the grades and alignment indicated. Proper facilities shall be provided for lowering sections of pipe into trenches. Under no circumstances shall pipe be laid in water, and no pipe shall be laid when trench conditions or weather are unsuitable for such work.

All pipes in place shall have been approved before backfilling. Laying of pipes shall proceed upgrade with the spigot ends of bell-and-spigot pipe, and the tongue ends of tongue-and-groove pipe pointing in the direction of the flow.

3d-08 PIPELINE TESTING.

Each straight run of pipeline shall be checked for gross deficiencies by holding a light in a manhole; it shall show a practically full circle of light through the pipeline when viewed from the adjoining end of the line.

3d-09 WATERPROOFING OF CONCRETE SURFACE.

Shall consist of one coat of asphalt primer and one coat of oxidized asphalt.

a. Asphalt Primer.

Shall consist of bituminous material of commercial type, conforming to UNI 4157, brush-applied on concrete surface which is free of dust, dry and smooth.

b. Oxidized Asphalt.

Shall be based on bitumen from selected oils, processed to controlled oxidation.

SECTION IIIe - EXTERIOR WATER SYSTEM

3e-1 INSTALLATION.

All pipes shall be installed complete with special parts of all kinds (elbows, runouts, sleeves, brass fittings, etc.) and with the necessary threading, mastic, hangers, ties, anchors and supports. Pipes layout shall be such as to avoid sharp curves or chokes.

3e-2 FINAL TEST.

Pipeline shall not be backfilled until all piping have been cleaned and inspected for seal. Therefore, the water system shall be hydrostatically tested at a pressure of 14 kg/sq.cm. for not less than 4 hours. Leaks noted during final test shall be eliminated by replacing the pipe or fitting. Caulking of joints will not be permitted. After such replacements, tests shall be repeated until positive result is obtained. All tests will be conducted in presence of the COR, by Contractor's furnished equipment, at no additional cost to the US Government.

3e-3 DISINFECTION.

Each unit of completed water service line shall be disinfected as specified herein. After pressure tests have been made, the unit to be disinfected shall be thoroughly flushed with water until all entrained dirt and mud have been removed before introducing the chlorinating material. The chlorinating material shall be either calcium hypochlorite or sodium hypochlorite. The chlorinating material shall provide a dosage of no less than 50 ppm and shall be introduced into the water lines in an approved manner. In no case will the agent be introduced into the line in a dry solid state.

The treated water shall be retained in the pipe long enough to destroy all bacteria and spores bacteria. Except where a shorter period is approved, the retention time shall be at least 24 hours;

no less than 10 ppm of chlorine shall result throughout the line at the end of the retention period.

All valves on the lines being disinfected shall be opened and closed several times during the contact period. The line shall then be flushed with clean water until the residual chlorine is reduced to less than 1.0 ppm. The Contracting Officer will take samples of water from several points in the unit in proper sterilized containers for bacterial examination. The disinfection shall be repeated until tests indicated absence of pollution for at least 2 full days. The unit will not be accepted until satisfactory bacteriological results have been obtained.

3e-4 WORK ON MAIN DISTRIBUTION LINES.

Gates valves operation on main water distribution lines will be performed by the maintenance personnel. Water supply interruptions shall be scheduled so as to minimize length. Maintenance personnel assistance shall be requested through the COR at least 3 working days ahead of time.

3e-5 MATERIALS AND EQUIPMENT.

a. Pipes.

High density polyethylene, PE 50, Class PN 10, according to UNI 7611 and UNI 7615.

b. Gate Valves.

Gate valves shall be oval body type with interior screw, class PN 16, and shall have body, bonnet, wedge, and gland of cast iron; body and wedge seal rings of brass; stem of stainless steel 13% chrome, with bronze screw; holed flanges adequate for UNI PN 16; tarring by immersion. Valves shall be without gland plate, provided with bonnet for control rod operation.

c. Indicator Post.

Conform to UL 789 for gate valves. Provide at least one coat of primer and two coats of red enamel. The indicator post shall have cast-iron body and shall be as detailed on drawings. It shall be a means to operate an underground valve and shall clearly indicate whether the valve is open or closed. Indicator post shall be of adjustable height.

3e-6 EXCAVATION AND BACKFILLING Excavation and Backfilling shall be in accordance with Section "Excavation and Backfilling."

3e-7 PIPELINES INSTALLATION.

The water pipe shall not be laid closer than 3 meters from a sewer, except where the bottom of the water pipe will be at least 30 cm above the top of the sewer pipe. Where a water line crosses under a gravity flow sewer line, the sewer pipe for a distance of at least 3 meters on each side of the crossing shall be replaced with a pressure pipe or completely encased in concrete. There will be no joints located within 1 meter horizontally of the crossing. Where sewer pressure pipes cross water pipes, in all cases the latter shall be not less than 60 cm above the sewer main.

3e-8 TEST REPORTS.

A special report prepared by the Contractor and countersigned by the COR shall show that the water lines have been subjected to final test. The report shall contain the following information:

Date and time of test start, test method, pressures reached, results obtained, possible corrections or test repetitions, time of test completion. One copy of these reports shall be given to the personnel participating in the final work inspection.

3e-9 ACCESSORIES.

Provide accessories and adaptors as required.

3e-10 BURIED UTILITY WARNING AND IDENTIFICATION TAPE.

manufactured specifically for warning and identification of buried piping. Tape shall be detectable by an electronic detection instrument. Provide tape in rolls, 7.5 cm minimum width, blue colored for the utility involved. Use permanent code coloring unaffected by moisture and other substances

SECTION IIIf - EXTERIOR SANITARY SEWER SYSTEM

3f-01 RELATED REQUIREMENTS AND DESCRIPTION OF WORK.

The work includes provision of new sanitary system and related work. Provide the system complete and ready for operation.

3f-02 PIPES.

Shall be PVC solid wall pipes type SN4-U, conforming to UNI EN 1401-1. Fittings and flanges shall conform to UNI 7449. The joints shall be of the ball and spigot type with elastomeric seal.

3f-03 FRAMES AND COVERS.

Frames and covers shall be made of ductile iron, Class ISO 1083, in accordance with standard UNI ISO EN 124, Class D400, with round cover, not ventilated, 60 cm diameter, opening on rotula.

3f-04 MORTAR.

Mortar for connections to other structures shall be composed of one part by volume of Portland cement and two parts of sand. The quantity of water in the mixture shall be sufficient to produce a stiff workable mortar. Water shall be clean and free of harmful acids, alkalis, and organic impurities. Include anti-shrinking additive in accordance with product manufacturer’s recommendations. The mortar shall be used within 30 minutes from the time the ingredients are mixed with water. The inside of the joint shall be wiped clean and finished smooth.

3f-05 BURIED UTILITY WARNING AND IDENTIFICATION TAPE.

manufactured specifically for warning and identification of buried piping. Tape shall be detectable by an electronic detection instrument. Provide tape in rolls, 7,5 cm minimum width, red-colored for the utility involved. Use permanent coloring unaffected by moisture and other substances

3f-06 SEWER STRUCTURES.

Prefabricated concrete pits are acceptable upon submittal and approval of catalogs and shop drawings and upon meeting the wall thickness and reinforcing criteria indicated on drawings.

3f-07 INSTALLATION OF PIPE.

Each pipe shall be carefully examined before being laid, and defective or damaged pipe shall not be used. Pipelines shall be laid to the grades and alignment indicated. Proper facilities shall be provided for lowering sections of pipe into trenches. Under no circumstances shall pipe be laid in water, and no pipe shall be laid when trench conditions or weather are unsuitable for such work.

All pipes in place shall have been approved before backfilling. Laying of pipes shall proceed upgrade with the spigot ends of bell-and-spigot pipe, and the tongue ends of tongue-and-groove pipe pointing in the direction of the flow.

3f-08 PIPELINE TESTING.

Each straight run of pipeline shall be checked for gross deficiencies by holding a light in a manhole; it shall show a practically full circle of light through the pipeline when viewed from the adjoining end of the line.

3f-09 WATERPROOFING OF CONCRETE SURFACE.

Shall consist of one coat of asphalt primer and one coat of oxidized asphalt.

a. Asphalt Primer.

Shall consist of bituminous material of commercial type, conforming to UNI 4157, brush-applied on concrete surface which is free of dust, dry and smooth.

b. Oxidized Asphalt.

Shall be based on bitumen from selected oils, processed to controlled oxidation.

SECTION IVa - REINFORCED CONCRETE WORK

4a-01 MATERIALS.

The structural concrete casting in the works required in these specifications shall comply with the following norms:

a. UNI EN 206, Calcestruzzo (concrete);

b. Consiglio Superiore dei LLPP, “Linee Guida sul Calcestruzzo Strutturale” (guidelines on structural concrete).

Sand shall be free from slime, and the organic matter contents shall not exceed the limit established by Ministerial Decree 3/6/1968.

Concrete shall have the following characteristics:

Lean concrete:

- 28-day characteristic cubic strength: C12/15 - Rck min. 15 N/mm2

Concrete for structural elements:

- 28-day characteristic cubic strength: C25/30 - Rck min. 30 N/mm2

- exposure class: Rck E XC1– XC2-UNI EN 206

- water/cement ratio: max 0.60

- aggregates: normal type

- consistency type: S3, S4 o S5

- chloride content class: Cl 0.20

If no differently required, steel to be used for reinforcement shall be type B 450C, round deformed and factory checked, with the following characteristics:

Yield tensile stress N/sq.mm. 450 Ultimate tensile stress N/sq.mm. 540 Average ratio between effective (fy_eff) and rated (fy_nom) yield tensile stresses shall be lower than 1.25.

Average ratio between ultimate and yield tensile stresses shall be between 1.35 and than

1.15.

Uniform elongation at maximum tensile strength shall be > 7,5%

4a-02 PERFORMANCE STANDARDS.

In addition to what specified on the drawings and in these specifications, the requirements set forth by the following norms apply:

- Law 5/11/1971 No. 1086

- D.M. 17/1/2018 “Norme tecniche per le costruzioni” (technical norms for constructions)

- Consiglio Superiore dei LLPP “Linee guida per la messa in opera del calcestruzzo strutturale e per la valutazione delle caratteristiche meccaniche del calcestruzzo indurito” (guidelines for the pourting of structural concrete and for the evaluation of the mechanical characteristics of hardened concrete).

a. Batches.

Batches shall be prepared and hauled so as to avoid segregation of the components, or a premature start of curing at the time of concrete placement. The casting must be adequately compacted and vibrated. The concrete surface must be kept moist for a minimum 3 days period. Concrete shall not be placed when the temperature is less than 0 degrees C. Dosing and preparation of concrete mix shall be performed with a concrete mixing equipment adequate to guarantee a proportion of ingredients with 3% accuracy for cement and for the only aggregates class. Mixing in truck mixer is allowed: in this case, mixing duration shall be 50 container revolutions. Mixing shall be performed in the factory before proceeding to transportation. Use of fixed concrete mixer is allowed only for castings of a volume below 1 cu m.

b. Joints.

When bar joints in a stressed area cannot be avoided, they shall be made in the less stressed points following the method indicated below and spacing them adequately:

1 Welding.

2 Threaded sleeve.

3 Overlapping by a 20 diameter minimum length and diverting the remaining section of each bar towards the compressed area.

The clearance between two adjacent bars at overlapping shall not exceed 6 times the bar diameter. Tension stressed bars shall not be spliced by overlapping.

c. Bent Bars.

The curvature radius of the bent bars shall be no less than 6 times the bar diameter.

d. Bars Cover and Clearance between Two Adjacent Bars.

In slabs, baffles and partitions the distance between the surface of any reinforcing bar and the nearest concrete exterior face shall be no less than 0.8 cm, and no less than 2 cm for beams and columns; however, the requirements indicated on the drawings govern. The distance between adjacent reinforcing bar surfaces in every direction shall be no less than 1 time the bar diameter, and in all cases no less than 2 cm. For this purpose special spacers shall be used.

e. Stirrups Stirrups shall be closed and shaped adequately to resist so that by working under tensile stress they may resist the outward movement of the longitudinal bars.

f. Removal.

Form must be removed by degrees and in such a manner as to avoid dynamic actions.

Forms shall not be removed…