Master Technical Specifications Nov 2005.pdf

Section 01100 1

SECTION 01100

GENERAL CONDITIONS

PART 1 – APPLICABLE NORMS

1.1 The Italian norms for building works and the instructions of materials suppliers shall be strictly observed for the execution of the works. In addition the general safety regulations for construction and the Base regulation for traffic, accidents and fire fighting shall be observed as follows:

a. UNI Norms – Demolition works; masonry works, pavement works, concrete reinforcement bars, structural steels, pipes, painting, plumbing, heating system and electrical system.

b. C.N.R.; ASTM; AASHTO norms – Aggregates, bitumen, bituminous mixtures and road works in general.

c. Legislative Decree No. 494 dated 14 August 1996.

d. Legislative Decree No. 528 dated 19 November 1999.

e. CEI norms in force at tender date.

f. UNEL norms in force at tender date.

g. ENPI norms in force at tender date.

h. NEC norms in force at tender date.

i. AFPM 91-210 Contract Safety.

j. AFI 91-202 Safety Program Management.

The manuals and regulations relative to paragraphs i and j, will be available for review at the Engineering Office, Bldg 407 of Aviano Air

Base, during normal working hours, from Monday to Friday, from 0800 to

1700 hrs. Further clarifications regarding the type of materials and the work specified in the Schedule to Work items or indicated in the drawings, will be provided during the site survey scheduled prior to the submittal of proposal.

1.2 CERTIFICATION OF COMPLIANCE WITH ITALIAN LAWS

1.2.1 Static Load Testing

The Contractor shall comply with the pertinent articles of Italian Law

1086 dated 5 November 1971, and all subsequent revisions. The Contractor shall be fully responsible for construction, supervision, static load tests, final testing, and for all costs associated with this procedure.

Article 2 of Law 1086, as amended, requires the static load tests to be performed under the supervision of an engineer or architect registered on the National Professional Rolls of Italy for at least ten years (10).

Prior to performing the tests, submit to the Contracting Officer the names and certified credentials of proposed testing personnel, engineer(s) or architect(s) they propose to perform the static load testing.

2 Section 01100

1.2.2 Mechanical and Electrical Work Certifications

As a condition of final acceptance of the work, the Contractor shall submit to the Contracting Officer a certificate of compliance for all contract work certifying that all electrical and mechanical work complies with Law No. 46 dated 5 March 1990, and that the provided work is adequate and safe for the designated use.

1.2.3 Other Certifications

In addition to the certifications listed above, the Contractor shall provide all other certifications and testing required by Italian Law.

Such certifications may include but are not limited to the following:

a. Certificate of compliance for electrical systems in accordance with CEI regulations and with D.P.R. No.547 dated 27 April 1955 on accident prevention.

b. Certificate of compliance for heating systems above 100,000 kcal/hr in accordance with Italian Law No. 373 dated 30 April

1976.

c. Certificate of compliance for fire prevention systems in accordance with Ministerial Decrees dated 16 February 1982 and 8

March 1985.

d. Certificate for elevator systems test in accordance with Italian

Law No. 1415 dated 24 October 1942.

PART 2 – MATERIALS

2.1 All materials shown on drawings and listed in the Schedule of Work

Item or anyhow necessary for the accomplishment of project will be furnished and installed by the Contractor except those shown on drawings which will be furnished and installed by the U.S.A. Government and installed by the Contractor.

2.2 DEMOLITION AND INTERVENTION WORK ON EXISTING STRUCTURES

During possible partial demolition or intervention operation of bearing structures the Contractor shall provide for the shoring of existing structures, for the safety of personnel and building, being responsible for any accident and/or damage. Shoring will be performed in a way to assure the integral conservation of structures not to be demolished or modified. Shoring shall be inspected by Contracting Officer’s Technical

Representative prior to proceeding with any demolition work of structural elements.

2.3 REMOVED MATERIALS

The materials to be removed, (specified on drawings and/or on the

Schedule of Work Items) shall be handled as follows:

2.3.1 Unsalvageable materials

Shall be transported to public dump in accordance with Italian communal norms in force. The Contracting Officer’s Technical Representative shall determine which materials are unusable. Under no circumstances will the

Contractor attempt to sell or otherwise use such material unless and until he first obtains, the necessary permits, licenses etc. from the

Section 01100 3

Italian Government Officials and will hold the U.S. Government free and harmless from his failure to do so.

2.3.2 Salvageable materials

Shall be loaded, unloaded and stacked at a warehouse of Aviano Air Base.

The Contracting Officer’s Technical Representative shall determine which material is salvageable and the storage location. Maximum distance will be 15 km.

2.3.3 Materials to be reused in the project

Shall be removed with care and stored by the Contractor on site, after inspection of operating state of such fixtures which will be done jointly with the Contracting Officer’s Technical Representative. The Contractor shall be fully responsible for preservation of such fixtures and before their installation, in the location he shall provide for cleaning and rehabilitation work.

2.4 SELECTION OF EQUIPMENT, MATERIALS AND COLORS

The Contracting Officer’s Technical Representative will select equipment, materials and colors from among the charts and factory samples which will be submitted by the Contractor and approved by the Government in accordance with the indications of the project documents. It will be the

Contracting Officer’s Technical Representative’s option to request all samples and catalogues of materials to be incorporated in the project to ensure the satisfactory and proper completion of the work. All samples shall be returned to Contractor.

2.5 SUBMITTALS

This paragraph applies only to those items not subject to the “brand name or equal” provision of the contract and listed in AF Form 3052. Within

15 days from the date of notice to proceed, or in accordance with the prescriptions given by the Contracting Officer, the Contractor shall submit Contracting Officer’s Technical Representative’s approval the data requested by the project documents and listed in the paragraph entitled

“Material Approval” in order to ascertain that the material corresponds to the technical characteristics of the project. The submittals consisting of AF Form 3000, and catalog contracts (4 copies), beside the samples, will be in English or Italian with the English translation attached. The list preparation shall be coordinated with the work schedule keeping in mind that the Government needs at least 15 days for the approval. Every disapproved item shall be resubmitted following the same procedure. A copy of the AF Form 3000 and relative attachments will be returned to the Contractor. No work will be started prior to obtaining the approval for the proposed material and equipment. The approval of submittals does not relieve the Contractor of responsibility for proper application and installation of the items, of other evident or hidden defects. Shop drawings, for electric equipment shall include construction drawings, diagrams and schematics for power circuits and control circuits, and component reference list.

2.6 USE OF BRAND NAMES IN SPECIFICATIONS

Unless otherwise specifically provided on this contract, reference to any equipment, material article or patented process by trade name, make or cat number shall be regarded as establishing a standard of quality and

4 Section 01100 shall not be construed as limiting competition, and the Contractor may, at his option use any equipment, material, article, or process which, in the judgment of the Contracting Officer’s Technical Representative, is equal to that named. The Contractor shall furnish to the Contracting

Officer’s Technical Representative all required data and samples as may be called for the these technical provisions or which the Contracting

Officer’s Technical Representative determines necessary for approval prior to use of the items during work performance.

2.7 “EQUIVALENT” ITEMS PROPOSED BY CONTRACTOR

If the Contractor intends to propose “brand names” different than the ones specified by U.S. Government, he will clearly indicate the

“equivalent” proposed item, the manufacturer, type, catalog No., etc. in the List of Equivalent Proposed Items attached to AF Form 3052 which shall be returned to the Government together with the proposal. Each equivalent item listed shall be supported by the relative technical documentation (catalog cuts, certificates, technical descriptions, calculations, etc.) in order to prove the equivalency of the technical characteristics of the product listed in the project document. Such documentation shall also be attached to the proposal.

2.8 INFORMATION DATA

Prior to work completion date and if expressly requested by project documents will submit the following information data in English and

Italian:

2.8.1 Manufacturer’s literature

Catalog extracts for all items (materials and equipment) furnished, in accordance with project documents.

2.8.2 Parts List

List of furnished items, in accordance with project documents:

a. Item description

b. Current unit price

c. Reference to manufacturing Firm

2.8.3 Manufacturer’s Address

List of materials and equipment suppliers, in accordance with project documents.

a. Firm Name

b. Complete address and telephone number

c. Reference to parts list

2.8.4 Operation and Maintenance Manuals

At work completion date, the Contractor shall submit three (3) copies of operation and maintenance manuals of all equipment installed.

Section 01100 5

2.8.5 Operation Test Reports

In accordance with project documents, prior to work completion date, the

Contractor shall perform balancing and testing of each system installed and will submit three (3) copies of testing report containing recorded data of readings performed during tests.

PART 3 – SITE CONDITIONS

3.1 WORKING HOURS

Normal working hours authorized on base, are from 0800 to 1700 hrs., Monday through Friday. Any working hours different from the authorized hours must be previously approved by the Contracting Officer.

3.2 UTILITY CUT-OFF

When interruption of existing utilities is deemed necessary for the installation of the lines or equipment, the Contractor shall submit a written request, to the Contracting Officer of his authorized representative for approval ten (10) days prior to his scheduled starting of work. For the electrical cut-off the request shall be submitted (10) ten days prior the scheduled starting of work. Such interruption shall not be started before receipt of the approved request, nor shall interruptions request be submitted at the end of the week (from Friday through Sunday). The request shall state the duration of interruptions and the description of work to be done.

3.3 STORAGE SHED

It will be Contractor’s option to provide one or more storage sheds to store materials and work tools. The available area, for the assembly of such shed, shall be indicated by the designated representative of the

Contracting Officer’s Technical Representative. At work completion the shed shall be disassembled and the area shall be restored to its original condition.

3.4 AIRFIELD SAFETY TRAINING

The Contractor shall contact Airfield Management to receive flightline driver and airfield safety training prior to start of any work beginning on the flightline.

3.5 TRANSPORTATION OF PERSONNEL AND MATERIALS

It will be the Contractor’s responsibility to transport the personnel to and from the job site and to load, transport, unload and place all supplies, materials and equipment involved in this contract.

3.6 UTILITIES

Electric power, existing grounding system and water available in the area, will be made available to the Contractor by the U.S. Government.

Connections and disconnections will be at Contractor’s expense and utilities are to be restored to their original condition at no extra cost to the Government. All damages caused, if any, to the existing utilities will be repaired immediately at Contractor’s expenses, also in case that such repairs are made by Government’s personnel and as directed by the

6 Section 01100

Contracting Officer’s Technical Representative. Before starting the works, the Contracting Officer will indicate the point wherefrom water and electric power will be taken. The Contractor will be entitled to provide for himself, if desired, a generating set, and his own expense.

The electrical characteristics of available power will be indicated in project documents.

3.7 TOILET FACILITY

The toilet facilities available in the vicinity of site of work may be used by Contractor’s personnel provided there are no instructions to the contrary in the project documents.

3.8 EXCAVATIONS

The Contractor shall initiate no excavation work prior to receiving an approved AF Form 103. This form will be prepared by U.S. Government personnel.

PART 4 - LABOR

All installation and construction operations, calibrations and tests during service, etc, shall be performed in a workmanlike manner by skilled tradesmen being qualified to perform the most difficult operations pertaining to their respective craft. The use of common labor for operations normally assigned to skilled tradesmen will not be accepted.

PART 5 – DEFINITIONS

As used throughout this master specification set the terminologies used such as: project, drawings, project documents and documents mean the additional specifications. Schedule of Work Items, Drawings and other documents which compose the specific individual project to be performed and for which a proposal is solicited separately.

PART 6 - ORDER OF PRECEDENCE

In case of conflict between this master specification set and the individual project documents, the difference shall be resolved by giving precedence to the individual project documents.

-- End of Section --

Section 01101 1

SECTION 01101

PROJECT SIGN

PART 1 - PROJECT SIGN

1.1 Scope

Furnish labor and material required for the construction and painting of a sign as shown on the attached sketch.

PART 2 - GENERAL

The Contractor shall identify the project by means of an appropriate sign mounted in a conspicuous area of the work site, as indicated by the

Contracting Officer or his designated representative. The sign shall be erected within 10 days of initiation of work at the job site. The sign shall be 120 cm wide x 80 cm high and shall be constructed of a material suitable to withstand exposure to inclement weather for the duration of the contract, and must not show evidence of warping, cracking, or other defects. The sign shall have a blue background with white lettering, and shall contain the following information in English:

a. Project No.

b. Project description

c. Constructed under Supervision of Base Civil Engineering

d. Contracted by 31st Contracting Squadron

e. Contractor

f. Design Engineer

g. Inspector

h. Contract Management: 31 CONS Construction Flight

i. ERP Coord

Lettering of the sign will be as shown on the following sketch, and may be painted or stenciled directly on sign. The sign will remain the property of the Contractor, and shall be promptly removed upon completion of the project.

2 Section 01101

Section 02530 1

SECTION 02530

SANITARY SEWERAGE

PART 1 - GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

ITALIAN NATIONAL INSTITUTE FOR UNIFICATION OF STANDARDS (UNI)

PUBLICATIONS

UNI EN 1563 (2004) Founding – Spheroidal graphite cast irons.

UNI EN ISO 1872-1 (2002) Plastics - Polyethylene (PE) moulding and extrusion materials -

Designation system and basis for specifications.

UNI EN ISO 1872-2 (2002) Plastics - Polyethylene (PE)

Preparation of test specimens and determination of properties - Amendment 1.

UNI EN 10240 (1999) Internal and/or external protective coatings for steel tubes - Specification for hot dip galvanized coatings applied in automatic plants.

UNI EN 1401-1 (1998) Plastics piping systems for non-pressure underground drainage and sewerage

- Unplasticized poly(vinyl chloride) (PVC-

U) - Specifications for pipes, fittings and the system.

UNI 7448 (1975) Rigid (unplasticized) PVC pipes.

Test methods.

UNI 7449 (1975) Rigid (unplasticized) PVC fittings and flanges. Test methods.

UNI 7613 (1976) High Density Polyethylene pipes for buried sewer drain. Types, dimensions, and requirements.

UNI EN 124 (1995) Gully Tops and Manhole Tops for

Vehicular and Pedestrian Areas - Design

Requirements, Type Testing, Marking, Quality Control.

1.2 DESCRIPTION OF WORK

2 Section 02530

The work includes all sanitary sewage systems 1.5 meters outside the building.

1.3 SUBMITTALS

1.3.1 Manufacturer's Catalog Data

a. Pipe, joints and fittings

b. Frames and covers

1.3.2 Certificates

Manufacturer's certificates of conformance or compliance shall be furnished for all pipe and pipe joint materials. These certificates shall include proof that the product has successfully passed all tests set forth in the referenced publications, whether these tests are specified to be mandatory or otherwise. For tests which are not specified to be performed at definite intervals during manufacture, the tests shall have been performed within three years of the date of submittal of certificates on the same type, class, grade, and size of pipe joint material as is being provided for the project.

1.4 DELIVERY, STORAGE, AND HANDLING OF MATERIALS

1.4.1 Delivery and Storage

Materials delivered to site shall be inspected for damage, unloaded, and stored with the minimum of handling. Store materials on site in enclosures or under protective coverings. Do not store materials directly on the ground. Inside of pipes and fittings shall be kept free of dirt and debris.

1.4.2 Handling

Pipe, fittings, and other accessories shall be handled in such manner as to ensure delivery to the trench in sound, undamaged condition.

PART 2 - PRODUCTS

2.1 PIPE, JOINTS AND FITTINGS

2.1.1 Polyethylene Pipe

Polyethylene pipe shall conform to all specifications of the Unification

Norms and UNI EN ISO 1872-1 and UNI 7613, thermoplastic materials in polyethylene, system of classification and methods of testing.

a. These norms concern the circular cross-section pipes, manufactured with high density polyethylene (HDPE), suitably stabilized to resist ageing.

b. The pipes shall be of the type for liquids under pressure. They shall be produced according to the UNI Norms, including UNI EN ISO

1872-2. Pipe shall have a green stripe indicating that the pipe is

Section 02530 3 for sewer systems only. This mark has to be provided by the manufacturer at time of pipe production.

Acceptable Manufacturers

The following manufacturers generally meet the provisions of these specifications for HDPE plastic piping and fittings:

a. FITT S.P.A.

Via Astico 40

36030 Fara Vicentino (VI)

Tel. 0445/399111

Fax 0445/897593

b. SOCIETA' DEL GRES

ING. SALA S.p.A.

Via Marconi, 1

24010 Petrosino (BG)

Tel. 035/579111

Fax 035/579342

c. ROMANA EDILIT PRIMA S.R.L.

Via Pier Vittorio Aldini, 41

00178 - Roma

Tel. 06/7267.0492/3

d. SIREA

Via Corriera 25

48010 - Ravenna

Tel. 0545/78008

Fax 0545/78790

e. SAMI PLASTIC S.P.A.

Loc. Piego, Fraz. Monterone

52038 Sestino (AR)

Tel. 0575/71711

Fax 0575/772369

2.1.1.1 Pipe Characteristics

The pipes in H.D.P.E. shall be supplied with smooth ends:

a. In rolls for classes PN6-PN10-PN16 up to the internal diameter of

110 mm.

b. In bars of a commercial length of 6 m to 12 m for classes PN 2,5 -

PN 3,2 - PN4 for internal diameters of 110-1000 mm and for classes

PN6 - PN10 of internal diameters 125-630 mm.

2.1.1.2 Material Characteristics

The material used to manufacture the pipes shall comply with the following characteristics:

a. specific gravity 0.945 to 0.965

b. thermal conductivity 0.47 kcal/m.hr. deg. C

c. elasticity moduli 9000 kg/cm

4 Section 02530

d. electric resistivity 1015 OHMS

e. yielding 240 kg/cm2

f. elongation on yielding <20%

g. elongation at breaking point >500%

2.1.1.3 Black Smoke

The black smoke normally used as an additive in the quantity of not less than 2 percent in weight, shall have the following general characteristics:

a. Mass by volume 1.5-2 gr/cm3

b. Average measurement of the particles 0.010-0.025 microns.

2.1.1.4 Internal and External Surfaces

The internal and external surface shall be smooth and uniform; free of irregularities and defects and the section compact and free of cavities and bubbles.

2.1.1.5 Special Pieces

The special pieces for the pipes in H.D.P.E. which may be used are the following:

a. Sleeve

b. Reduction sleeve

c. Male union

d. Female union

e. Flanged union

f. 90 degree bend

g. 45 degree elbow

h. 90 degree elbow

i. 90 degree elbow with female threaded union

j. 90 degree tee

k. 90 degree tee with varied reductions

l. 90 degree tee with female threaded off-take

m. 90 degree tee with male threaded off-take

n. Stirrup intake with 4 bolts

o. Stirrup intake with 2 bolts

Section 02530 5

All the special pieces shall be suitable for PN16 and the special pieces may be furnished both in metal and in resin material. For the latter, the unions shall be of the compression type. The compression unions shall normally be furnished by the manufacturer with the various pieces formed from the following materials:

a. The body in black polypropylene

b. The ferrules in grey polypropylene

c. The clamping rings in white polyacetate

d. The O'-ring in nitrile rubber

2.1.1.6 Joints

Joints shall be butt welded by heat fusion in accordance with the pipe and fitting manufacturer's recommendations. The joint shall be regular in appearance and have physical strength not less than the pipe being joined. Ends to be joined must be square. The joint fusion equipment must be designed specifically for the joint being made and be in good working order. Do not apply stress to the joint until it is cool to the touch.

2.1.2 PVC Pipe

PVC pipe shall conform to the applicable UNI Standards. PVC pipes shall be solid wall and shall conform to UNI EN 1401-1 and UNI 7448. Fittings and flanges shall conform to UNI 7449. The joints shall be of the bell and spigot type with elastomeric seal.

2.1.2.1 Joints

Joints shall be in accordance with UNI 7449.

2.2 Concrete

Unless otherwise specified, concrete shall conform to the requirements for Class Rck 250 concrete under Section 03300, "Cast-In-Place Concrete".

Reinforcement shall be deformed bars type FeB44k.

2.3 Forms

Forms shall be of wood, steel or other suitable material.

2.4 FRAMES AND COVERS

Frames and covers for manholes shall be made of cast iron in accordance with UNI EN 124, UNI EN 1563. Frames and covers shall be rated for truck traffic and shall be of the dimensions indicated on the drawings.

Workmanship and finish shall be equal to the best practice in modern structural shops and foundries. Frames and covers shall be formed to shape and size with sharp lines and angles. Shearing and punching shall produce clean, true lines and surfaces. Castings shall be sound and free from warp, cold shuts, and blot holes that may impair their strength or appearance. Exposed surfaces shall have smooth finishes and sharp, well defined lines and arises. The necessary rabbets, lugs, and brackets shall be provided.

6 Section 02530

Cast in the word “SANITARY” on the cover.

2.5 MORTAR

Mortar for setting castings and connections to sewerage 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, alkalies, and organic impurities. 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.

2.6 WARNING TAPE AND BARE COPPER TRACER WIRE

As specified in Section 02315, "Excavation and Fill".

2.7 MANHOLE STRUCTURES

Construct of clay brick, solid concrete masonry units or concrete.

Precast structures may be provided in lieu of cast-in-place concrete.

Pipe-to-wall connections shall be mortared to produce smooth transitions and watertight joints. Bases shall have smooth inverts accurately shaped to a semicircular bottom conforming to the inside contour of the adjacent sewer sections. Changes in direction of the sewer and entering branches into the manhole shall have a circular curve in the manhole invert of as large a radius as the size of the manhole will permit.

2.8 MANHOLE STEPS

Manhole steps shall be made of galvanized steel bars in accordance with

UNI EN 10240 and as indicated on the drawings.

PART 3 - EXECUTION

3.1 INSTALLATION OF PIPE

Pipes shall be placed at the depth and gradients indicated on the design drawings and approved by the Contracting Officer’s Technical

Representative, following verification of the perfect condition of the pipes and the related joints. No gradient and reverse gradients less than the design ones shall be allowed: should such gradients be found, the Contractor shall remove and reconstruct the work at his own expense.

3.1.1 Excavation

Excavation shall be in accordance with Section 02315, "Excavation and

Fill".

The Contractor shall remove and replace at his own expense, all pieces which are defective, damaged or in any case do not guarantee the perfect outcome of the work. All pipes placed in transitable or parking areas or in areas otherwise subject to vehicle traffic, in the Contracting

Officer’s Technical Representative's opinion, and placed at a depth of less than 60 cm (measured from the finished surface to the upper surface to the upper surface of the pipe) shall be buried in and protected by a layer of concrete of suitable thickness. The connection to manholes and other appurtenances shall be carried out in workmanlike fashion, paying attention to the position and the perfect sealing.

Section 02530 7

3.1.2 Warning Tape and Bare Copper Tracer Wire

3.2 CONNECTIONS TO EXISTING LINES

Connections to existing lines shall be made in a manner approved by the

Contracting Officer’s Technical Representative.

3.2.1 Sanitary Sewer System

Connections to the existing sanitary sewer system: The Contractor shall furnish all material and labor required to make connections into the existing sanitary sewer system in the streets, and shall perform all necessary excavating, backfilling, and other labor as required. The pipe shall be installed as shown on drawings. The pipe to wall connection shall be perfectly watertight. The Contracting Officer shall be notified in writing at least ten days prior to the date the connection is made.

3.3 MANHOLE CONSTRUCTION

Construct base slab of cast-in-place concrete or precast concrete base sections. Make inverts in bases with a smooth surfaced semi-circular bottom conforming to the inside contour of the adjacent sewer sections.

For changes in direction of the sewer and entering branches into the manhole, make a circular curve in the manhole invert of as large a radius as manhole size will permit. For cast-in-place concrete construction, either pour bottom slabs and walls integrally or key and bond walls to bottom slab. For precast concrete construction, make joints between manhole sections with the gaskets specified for this purpose. Cast-in-place concrete work shall be in accordance with the requirements specified under paragraph entitled "Concrete" of this section.

3.4 FIELD INSPECTIONS AND TESTS

3.4.1 General

Perform field tests and provide labor, equipment, and incidental required for testing.

3.4.2 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.

3.4.3 Leakage Test

Prior to testing for leakage, backfill trench up to at least the lower half of pipe sufficiently to prevent movement, but leaving joints uncovered to permit inspection. Make exfiltration test by filling the line with water so that the head will be at least 1.20 meters above the top of the pipe at the upper end of the pipeline section being tested.

Allow filled pipeline to stand until the pipe has reached its maximum absorption, but not less than 4 hours. After absorption, re-establish the head and measure the amount of water needed to maintain this water level during a two hour test period. Amount of leakage shall not exceed

8 Section 02530

0.30 liters per cm of diameter per hour per 30 m of pipeline; when leakage exceeds the amount specified, make satisfactory correction and retest pipeline section in the same manner as previously specified.

-- End of Section –-

Section 01101 1

SECTION 01101

PROJECT SIGN

PART 1 - PROJECT SIGN

1.1 Scope

Furnish labor and material required for the construction and painting of a sign as shown on the attached sketch.

PART 2 - GENERAL

The Contractor shall identify the project by means of an appropriate sign mounted in a conspicuous area of the work site, as indicated by the

Contracting Officer or his designated representative. The sign shall be erected within 10 days of initiation of work at the job site. The sign shall be 120 cm wide x 80 cm high and shall be constructed of a material suitable to withstand exposure to inclement weather for the duration of the contract, and must not show evidence of warping, cracking, or other defects. The sign shall have a blue background with white lettering, and shall contain the following information in English:

a. Project No.

b. Project description

c. Constructed under Supervision of Base Civil Engineering

d. Contracted by 31st Contracting Squadron

e. Contractor

f. Design Engineer

g. Inspector

h. Contract Management: 31 CONS Construction Flight

i. ERP Coord

Lettering of the sign will be as shown on the following sketch, and may be painted or stenciled directly on sign. The sign will remain the property of the Contractor, and shall be promptly removed upon completion of the project.

2 Section 01101

Section 02315 1

SECTION 02315

EXCAVATION AND FILL

1.1 APPLICABLE PUBLICATIONS

The following publications of the issues listed below, but referred to thereafter by basic designation only, form a part of this specification to the extent indicated by references thereto:

AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) PUBLICATIONS

D 1556-00 Standard Test Method for Density and Unit

Weight of Soil in Place by the Sand Cone

Method.

D 1557- 02 e1 Standard Test Methods for Laboratory

Compaction Characteristics of Soil Using

Modified Effort (56,000 ft-lbf/ft3(2,700 kN-m/m3).

D 2922- 01 Standard Test Methods for Density of Soil and Soil Aggregates in Place by Nuclear

Methods (Shallow Depth).

D 2487- 00 Standard Classification of Soils for

Engineering Purposes (Unified Soil

Classification System).

ITALIAN LAWS

Legislative Decree No. 494 (14 August 1996) Implementation of the instruction 92/57/CEE concerning the minimum safety and health requirements to be accomplished in temporary or mobile work sites.

1.2 SUBMITTALS

1.2.1 Certified Laboratory Test Reports

Before delivery of materials, certified copies in triplicate of the reports of all tests required herein under materials and in referenced publications shall be submitted to and approved by the Contracting

Officer. The testing shall have been performed in an independent laboratory approved by the Contracting Officer. Additional testing shall be submitted when the source of materials is changed. Certified test reports are required for the following:

a. Porous fill for capillary water barrier.

b. Select fill material

1.2.2 Field Test Reports

a. Fill and backfill test

2 Section 02315

b. Select material test

c. Porous fill test for capillary water barrier

d. Density tests

1.2.3 Records

The Contractor shall submit a request for digging permit as required in paragraph 1.4 following.

1.3 SITE INFORMATION

The data on sub-surface soil conditions indicated in the contract drawings are not intended as representations or warranties of the continuity of such conditions between soil borings. It is expressly understood that the Government will not be responsible for any interpretation or conclusion drawn there from by the Contractor. The data are made available for the convenience of the Contractor.

Additional soil borings and other exploratory operations may be made by the Contractor at no additional cost to the Government, provided such operations are approved by the Contracting Officer.

1.4 EXISTING UTILITIES

Before starting mechanical earthwork operations, the Contractor shall obtain digging permits from the Contracting Officer. Requests for digging permits shall specify locations of work to be performed and date that the work is to begin. The locations of existing utilities indicated are approximate; the Contractor shall scan the construction site with electromagnetic and sonic equipment and mark the surface of the ground where existing underground utilities are discovered. The Contractor shall use manual methods to verify the location of underground utilities.

If utilities are to be left in place, protection against damage shall be provided. Existing utilities serving facilities occupied and used by the

Government shall not be interrupted except when approved in writing by the Contracting Officer and then after temporary utility services have been approved and provided.

1.5 MATERIAL STORAGE

Excavated materials classified as satisfactory soil material shall be stockpiled, where directed, until required for backfill or fill.

Stockpiles shall be placed, graded, and shaped for proper drainage, and stored in a manner to prevent contamination and segregation. Materials required in the work shall be located and retained a sufficient distance from the edge of excavations to prevent such material from falling or sliding back into the excavations, and to prevent cave-ins. Waste materials, such as excavated material classified as unsatisfactory soil material, trash, debris, and excess satisfactory soil material, shall be disposed of as specified hereinafter.

1.6 GENERAL REQUIREMENTS

Bids shall be based on the following:

a. That the surface elevations are as indicated.

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b. That no pipes or other artificial obstructions, except those indicated, will be encountered.

c. That hard material will not be encountered.

d. That ground water elevations indicated are those existing at the time subsurface investigations were made and do not necessarily represent permanent ground water elevation.

In case the actual conditions differ substantially from those stated or shown, the provisions of the contract respecting an adjustment for changed conditions shall apply, subject to the requirements of notification thereunder being given. Hard material shall be defined as solid rock, firmly cemented unstratified masses or conglomerate deposits possessing the characteristics of solid rock not ordinarily removed without systematic drilling and blasting and any boulder, masonry, or concrete except pavement, exceeding 0.4 cubic meters in volume.

PART 2 – PRODUCTS

2.1 POROUS FILL

Capillary water barrier (indicated as porous fill) under concrete floor slabs and areaways shall consist of clean crushed stone, crushed gravel, or uncrushed gravel, 90-100 percent passing a 20 millimeter sieve and 0-5 percent passing a 4.75 millimeter sieve with a sand equivalent of not less than 50 when tested in accordance with UNI EN 933-8. Porous fill may be composed of an appropriate combination of sand and crushed rock to meet the above gradation requirements. The capillary water barrier shall be placed directly on the subgrade. The barrier shall be constructed in layers not exceeding 10 centimeters in compacted thickness, and each layer shall be compacted with a minimum of two passes of a hand-operated plate type vibratory compactor.

2.2 SOIL MATERIALS

2.2.1 Satisfactory Soil Material

Satisfactory soil materials used as backfill for trenches, drains and for structures shall consist of native materials classified as well graded sands, silty sands or clayey sands which are free from debris, roots, wood, scrap materials and other vegetable matter and refuse.

2.2.2 Topsoil for Turfed Areas

Topsoil shall be from 5 to 10 percent organic matter, maximum particle size 10 millimeters (3/8 inch) with a maximum 3 percent retained on 6 millimeters (1-1/4 inch) sieve screen. Topsoil shall be free of sticks, stones, roots, and other debris and objectionable materials that is harmful or will hinder plant growth. Other components of the topsoil shall conform to the following limits:

pH 6.0 to 7.0

Soluble Salts 600 ppm maximum

Silt 25 to 50

Clay 10 to 30

Sand 20 to 35

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Topsoil may be stripped and stockpiled surface soil if it meets the above requirements or if it is conditioned to meet the above requirements.

Topsoil shall be obtained from an approved topsoil donor area.

2.2.3 Surface Soil

The top approximately 40 centimeters of existing soil which contains organic material.

2.2.4 Select Fill

Select fill material shall be composed of sand or crushed rock. This material shall have the following gradation:

Sieve Designation Percent Passing (Weight)

40 mm 75 a 85

4.75 mm 30 a 50

0.425 mm 5 a 15

2.2.5 Backfill and Fill Materials

Soil materials for backfill and fill shall be free of clay clods, rock or gravel larger than 6 centimeters in any dimension, debris waste, frozen materials, and other deleterious matter, and shall be satisfactory soil materials as follows:

Area Classification Backfill or Fill Material

In all excavations, unless otherwise specified hereinafter.

Excavated or borrow material that has been sampled, tested and approved as "Satisfactory Soil

Material."

Under grassed areas. Excavated or borrow material that has been sampled, tested and approved as "Satisfactory Soil

Material."

Under buildings. Select fill material and porous fill.

Under sidewalks and exterior concrete slabs

Select fill material.

2.2.6 Pipe Bedding Materials

a. Class I: Angular, 6 to 40 millimeters, graded stone, including a number of fill materials that have regional significance such as coral, slag, cinders, crushed stone and crushed shells.

b. Class II: Coarse sands and gravels with maximum particle size of

40 millimeters, including various graded sands and gravels containing small percentages of fines, generally granular and non-cohesive, either wet or dry. Soil Types GW, GP, SW, and SP are included in this class as specified in ASTM D 2487.

2.4 BURIED WARNING AND IDENTIFICATION TAPE

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Polyethylene plastic warning tape manufactured specifically for warning and identification of buried utility lines. Provide tape in rolls, 40 millimeters minimum width, color coded as specified below for the intended utility with warning and identification imprinted in bold black letters continuously over the entire tape length. Warning and identification to read, “ATTENZIONE, LINEE INTERRATE SOTTOSTANTI

(servizio interessato)” “CAUTION, BURIED (intended service) LINE BELOW" or similar wording. Color and printing shall be permanent, unaffected by moisture or soil.

Warning Tape Color Codes

Red Electric

Yellow Gas, Oil; Dangerous Materials

Orange Telephone and Other Communication Types

Blue Water Systems

Green Sewer Systems

Green Storm Systems

Light Blue Compressed Air

2.4.1 Bare Copper Tracer Wire for Non-Metallic Piping

Minimum diameter of the wire shall be 3 millimeters. Bare copper tracer wire shall be buried as shown on drawings, and shall terminate inside the manhole at each end.

PART 3 – EXECUTION

3.1 TOPSOIL

The top 10 centimeters thickness, or as otherwise shown, of all newly graded earth surfaced areas shall consist of topsoil. The topsoil shall be uniformly distributed on the designated areas and evenly spread to an average thickness of ten centimeters with a minimum thickness of eight centimeters, or as otherwise shown. Prior to placing the topsoil, the subgrade, wherever excessively compacted by traffic or other causes, shall be loosened by disking or by scarifying to a depth of at least 6 centimeters, to permit bonding to the subgrade. The spreading shall be performed in such a manner that planting can proceed with little additional soil preparation or tillage. Any irregularities in the surface resulting from topsoiling or other operations shall be corrected in order to prevent the formation of depressions where water will stand.

Topsoil shall not be placed when the subgrade is excessively wet, extremely dry, or in a condition otherwise detrimental to proper grading.

3.2 EXCAVATION

3.2.1 General

Excavation shall consist of the removal and disposal of all materials encountered to obtain the specified subgrade elevations. Strip existing surface soil to minimum 40 centimeter depth, unless otherwise noted.

3.2.2 Protection of Persons and Property

All excavations shall be barricaded and posted with warning signs for people safety. Warning lights shall be provided during hours of darkness.

Structures, utilities, sidewalks, pavements and other facilities

6 Section 02315 immediately adjacent to excavations shall be protected against damage including settlement, lateral movement, undermining, and washout.

3.2.3 Excavation for Structures

Excavation for structures shall conform to the dimensions and elevations indicated within a tolerance of plus or minus 15 centimeters and shall extend a sufficient distance from footings and foundations to permit placing and removal of concrete formwork, installation of services and other construction indicated, and for inspection, but not less than 1.50 meters from the sides of foundations. In excavations for footings and foundations, take care not to disturb the bottom of the excavation.

Excavate to final grade just before concrete is placed. Trim bottoms to the required lines and grades to leave a solid bed to receive concrete.

3.2.4 Trench Excavation

Trenches shall be of necessary width for proper pipe, duct or cable laying and banks shall be as nearly vertical as practicable. Bottoms of trenches shall be accurately graded to provide uniform bearing and support for each section of pipe on undisturbed soil at every point along its entire length, except for portions of pipe sections where it is necessary to excavate for bells and for proper making of joints and to allow for the indicated thickness of select fill bedding. Bell holes and depressions for joints shall be shaped after bedding bottom has been graded and shall be only one centimeter greater in length, depth and width than the bell, as required for properly making the particular type of joint, and to insure that the bell does not bear an undue portion of the load. When hard materials are encountered, trenches shall be cut to an over-depth of at least ten centimeters including bell holes, and back-filled to required grade as specified hereinbefore when hard materials are not encountered. Trenches shall then be backfilled as previously specified for areas where hard material is not encountered.

3.2.5 Excavation for Roads and Parking Areas

Excavation shall consist of excavating and grading for parking areas;

excavating the top 40 centimeters of surface soil and additional unsuitable material, regardless of character, from the subgrade; and disposing of all excavated materials, as specified and in conformity with the lines, grades, cross sections, and dimensions shown on the drawings, and to replace unsatisfactory materials from other excavation or grading operations.

3.2.6 Removal of Unsatisfactory Soil Materials

Unsatisfactory soil materials encountered that extend below the required elevations shall be excavated to the depth directed by the Contracting

Officer’s Technical Representative. Such additional work, provided it is not due to the fault or neglect of the Contractor, shall be measured as directed by the Contracting Officer and paid for by the Government in accordance with the "Special Requirements" relative to changes in the work. Where unsatisfactory soil materials result from the neglect of the

Contractor in his performance of shoring and bracing, water removal, material storage, or other specified requirements, the resulting unsatisfactory soil material as hereinafter specified shall be removed and replaced at no additional cost to the Government.

3.2.7 Unauthorized Excavation

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Unauthorized excavation shall consist of removal of materials beyond indicated subgrade elevations or side dimensions specified without the specific direction of the Contracting Officer’s Technical Representative and shall be replaced as hereinafter specified at no additional cost to the Government. Unauthorized excavation under the footing or base of foundation or retaining wall shall be filled to the elevation of the footing or base with lean concrete (Rck = 200 kilograms per square centimeter) or well-compacted select fill, without altering the approved top elevation. Elsewhere unauthorized excavations shall be backfilled and compacted as specified for authorized excavations of the same classification.

3.2.8 Stability of Sides

Sides of excavations over 1.5 meters in depth shall be sloped to the angle of repose of the material excavated, or shall be shored and braced where sloping is not possible either because of space restrictions or stability of material excavated. Sides and slopes of excavations shall be maintained until completion of backfill placement in a safe condition by scaling, benching, shelving, or bracing. Precautions shall be taken to prevent slides or cave-ins when excavations are made in locations adjacent to backfilled excavations, and when sides of excavations are subjected to vibrations from vehicular traffic or the operation of machinery or any other source.

3.2.9 Shoring and Bracing

Materials used for shoring and bracing, such as sheet piling, uprights, stringers and crossbraces, shall be in good serviceable condition. Any timber used shall be sound and free of large or loose knots. Shoring and bracing in excavations shall be maintained regardless of the length of time excavations will be open. All shoring and bracing shall be carried down with the excavation. Wherever subsequent removal of sheet piling could permit the lateral movement of soil under adjacent structures, steel sheet piling or pressure creosote timber sheet piling shall be used, and left permanently in place, and cut off as required.

3.2.10 Water Removal

Excavation shall be performed in a manner to prevent surface water and subsurface or ground water from flowing into the excavations and to prevent water from flooding the project site and surrounding area. Water shall not be permitted to accumulate in excavations. All water shall be removed from excavations by approved dewatering methods so that softening of foundation bottom, undercutting footings, and soil changes detrimental to the stability of subgrades and foundation will not occur. Pumps, sumps, suction and discharge lines, and other dewatering system components shall be provided and maintained as necessary to convey the water away from the excavations. Dewatering operations shall be continued until the completion of backfill placement and until construction subject to water pressure has obtained the specified strength. In all instances, dewatering operations shall continue as long as water can enter or accumulate in the excavations. Water removed from excavations and rainwater shall be conveyed to collecting or run-off areas, as approved by the Contracting Officer’s Technical Representative.

Temporary drainage ditches and other diversions shall be provided and maintained outside the excavation limits for each structure. The use of

8 Section 02315 trench excavations for site utilities as temporary drainage ditches will not be permitted.

3.3 BACKFILL AND FILL

3.3.1 General

Backfill shall consist of the placement of specified backfill material, in layers, in the excavations to the indicated subgrade elevations, for each area classification listed below.

Fill shall consist of the placement of specified fill materials, in layers, over the ground surface to the indicated elevations, for each area classification listed below.

3.3.2 Preparations Prior to Backfill Placement

Excavations shall be backfilled as promptly as the work permits, but not until completion of the following:

a. Approval of construction below finish grade.

b. Inspection, testing, approval, and recording location of underground utilities.

c. Removal of concrete formwork.

d. Removal of shoring and bracing, and backfilling of voids with satisfactory soil material; temporary sheet piling driven below the bottom of structure and utilities shall be cut off and removed in a manner to prevent settlement of the structure or utilities.

e. Removal of trash and debris.

3.3.3 Preparation of Ground Surface to Receive Fill

Vegetation, debris, unsatisfactory soil materials, obstructions, and deleterious materials shall be removed from ground surface prior to the placement of fills. Sloped surfaces steeper than one vertical to four horizontal shall be plowed, stripped, or broken-up in such a manner that fill material will bond with the existing material. When the ground surface has a density less than that specified for the particular area classification, the ground surface shall be broken-up, pulverized, moisture-conditioned to near optimum moisture content of the soil material and compacted to the required depth and percentage of maximum density.

3.3.4 Backfilling Trenches

Backfilling shall be coordinated with testing of utilities. Where damage is likely to result from withdrawing sheeting, the sheeting shall be left in place and contract price will be adjusted accordingly. Trenches shall be carefully backfilled with materials hereinbefore specified or as indicated, and deposited in 20 centimeters maximum layers, loose depth.

Borrow materials shall be obtained from sources outside the station. The source of material shall be the Contractor's responsibility.