MasterSpecifications.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 --

ASHE 10-1102

SECTION 01101/R

SECTION 01101/R

PROJECT SIGN

On page 2 change the name of Project on the sign as follows:

“ End of Section”

ASJD 18-1015

SUSTAIN ROOF, FAC. 172, AREA 1,

AVIANO AIR BASE, AVIANO, ITALY

Section 05500 1

SECTION 05500

METAL FABRICATIONS

PART 1 - GENERAL

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 the references thereto:

ITALIAN NATIONAL INSTITUTE FOR THE UNIFICATION OF STANDARDS (UNI)

PUBLICATIONS:

UNI 4630 (1982) Hot rolled finished flat steel products. Buckle plates. Dimensions and tolerances.

UNI 4634 (1960) Classification and qualification of electric welders. Welders of mild or low alloy steel sheet of medium or thick gage.

UNI 3740 –1-9-10-11 (1999-1982) Steel Fasteners. Technical

Specifications.

UNI EN 10056-1 (2000) Structural steel equal and unequal leg angles – Dimensions.

UNI EN 10056-2 (1995) Structural steel equal and unequal leg angles. Tolerances on shape and dimensions.

UNI EN 10025 (1995) Hot rolled products of non - alloys structural steel. Technical delivery conditions.

UNI EN 10002-1 (1992) Metallic materials. Tensile testing. Method of test (at ambient temperature).

UNI 564 (1960) Metal Materials Mechanical Tests.

Bend Test.

NATIONAL COUNCIL FOR SCIENTIFIC RESEARCH (C.N.R.) PUBLICATIONS:

CNR 10011/85 Steel Constructions - Calculation, Execution and Maintenance Instructions.

CNR 10016/85 Steel and Concrete Compound Truss -

Calculation and Execution Instructions.

CNR 10022/85 Cold Sections - Instruction for the Use in

Constructions.

CNR 10029/85 High Resistance Steel Constructions.

Calculation, Execution, Test and Maintenance Instructions.

2 Section 05500

EUROPEAN WROUGHT ALUMINUM ASSOCIATION (EWWA-EURAS):

Type 46020 Aluminum Alloy (Cast).

Type 5005 Aluminum Alloy (sheet).

Type 6063 Aluminum Alloy (Extruded).

ITALIAN LAW

Law 1086 (5 November 1971) Norms for the

Regulation of Normal, Prestressed and Metal Structure Cement Conglomerate Works.

Ministerial Decree 9 Jan.1996 Technical Norms for the Calculation, Execution, and Testing of Normal and Prestressed Reinforced Concrete Structures, and Metal Structures.

1.2 DESCRIPTION

Fabrications shall be well-constructed products conforming to the types, materials and details indicated on drawings or specified herein. Basic forms of metal components from which assemblies are fabricated shall be of wrought or cast metal as shown or specified and physical properties, including tempers, of the metals shall be suitable for their intended use. All metals shall be free of defects that will affect their strength or durability and where exposed to view in the finished work, edges, and surfaces shall be without burrs, gouges, scratches, or other blemishes that mark their appearance. Exposed welds and brazed or soldered joints shall be ground smooth; polished or other surfaces with applied finishes shall be protected against damage or defacement of any kind. Assemblies shall be of the manufacturer's standard construction except where indicated or specified otherwise. Permanent connections for components subject to impact or other live loads shall be effected by welding, riveting or other approved methods. Welding shall conform to UNI 4634 and shall be accomplished so as to prevent permanent distortion of the connected parts. Bolts, screws and similar suitable fastenings shall be used for anchoring or securing miscellaneous metal work to supporting construction unless indicated otherwise. The Contractor shall verify all measurements and shall take field measurements before fabrication.

Material and parts to complete each item shall be included, even though such work is not definitely shown or specified. Miscellaneous bolts and anchors, supports, braces and connections for installation and completion of the miscellaneous metalwork shall be provided.

1.3 SUBMITTALS

1.3.1 Data

Data shall be sufficient to show conformance to specified requirements;

submit complete descriptive data on the following materials:

a. Canopy

b. Panels for air handling unit casing

c. Support plates, expansion fasteners, anchors, bolts and miscellaneous fastening devices

d. Fire extinguisher cabinet

Section 05500 3

e. Handrails

f. Steel louvers

1.3.2 Drawings

Submit templates and erection and installation details indicating thickness, type, grade, class of metal and dimensions. Show construction details, reinforcement, anchorage and installation in relation to the building construction:

a. Canopy

b. Panels for air handling unit casing

c. Support plates, expansion fasteners, anchors, bolts and miscellaneous fastening devices

d. Fire extinguisher cabinet

e. Handrails

f. Steel louvers

1.3.3 Shop drawings, descriptive data and samples shall be approved before items are delivered to the job site. The drawings shall show materials, connections, finish and all pertinent details.

1.4 DELIVERY, STORAGE AND HANDLING

Protect from corrosion, deformation, and other types of damage. Store items in an enclosed area free from contact with soil and weather. The Contractor shall replace all damaged items.

1.5 QUALIFICATION OF WELDERS

Qualify welders in accordance with UNI 4630-60 using procedures, materials, and equipment of the type required for the work.

PART 2 - PRODUCTS AND EXECUTION

2.1 MATERIALS

The thickness indicated or specified are minimum. Unless specified otherwise, materials shall be in accordance with the following specifications and standards as applicable. Material not otherwise specified herein shall conform to the requirements of Law 1086.

2.1.1 Structural Steel

UNI 3740

2.1.2 Aluminum Alloy (Extruded)

European Wrought Aluminum Association (EWAA-EURAS) Type 6063.

2.1.3 Steel

Italian Norm Quality 1.

2.1.4 Aluminum Alloy Cast

EWAA-EURAS Type 46020.

4 Section 05500

2.1.5 Aluminum Alloy Sheet

EWAA-EURAS Type 5005.

2.1.6 Fittings for Steel Pipe

Standard malleable iron fittings.

2.1.7 Hardware

Provide as an integral part of miscellaneous metal items.

2.1.8 Anchors and Fasteners

Where exposed, shall be of the same material, color and finish as the metal to which applied.

2.1.8.1 Expansion Shields

Provide of group, type, class and style best suited for the purpose.

Provide shields recessed not less than 60 millimeters into concrete or masonry unless indicated otherwise.

2.1.8.2 Lag and Screws or Bolts

Type and grade best suited for the purpose.

2.1.9 Hot Dip Galvanizing

All items indicated or specified to be galvanized shall be hot dipped.

2.2 DISSIMILAR MATERIALS

Where dissimilar metals are in contact or where aluminum is in contact with concrete, mortar, masonry, wood or absorptive materials subject to wetting, protect the surfaces with a coat of bituminous paint or a coat of zinc chromate primer to prevent galvanic or corrosive action.

2.3 FABRICATION

By mechanics skilled in the trade and in accordance with the manufacturer's directions. Metal work shall be well formed to shape and size, with sharp lines and angles and true curves. All work fabricated to allow for expansion and contraction of materials. Provide welding and bracing of adequate strength and durability with tight, flush joints dressed smooth and clean.

2.3.1 Measurements

Before fabrication, take necessary field measurements and verify all related conditions and measurements.

2.3.2 Metal Surfaces

Shall be clean and free from mill scale, rust flakes and rust pitting;

well formed and finished to shape and size, with sharp lines and angles and smooth surfaces. Shearing and punching shall leave clean true lines and surfaces. Weld or rivet permanent connections. Welds and flush rivets shall be used and finished flush and smooth on surfaces that will

Section 05500 5 be exposed after installation. Do not use screws or bolts where they can be avoided; when used, heads shall be countersunk, screwed up tight and threads nicked to prevent loosening.

2.3.3 Construction

Thickness of metal and details of assembly and supports shall give ample strength and stiffness for the minimum loads specified or indicated.

Joints exposed to weather shall be formed to exclude water.

2.3.4 Fastening

Provide the necessary rebates, lugs and brackets so that the work can be assembled in a neat, substantial manner. Holes for bolts and screws shall be drilled. Built-up parts shall be out of wind. Joints exposed to the weather shall be formed to exclude water. Conceal fastenings where possible.

2.3.5 Shop Fabrication

Fabrication and assembly shall be done in the shop to the greatest extent possible.

2.3.6 Drilling and Punching

Shall produce clean, true lines and surfaces.

2.3.7 Welding and Riveting

Welding shall be continuous along the entire area of contact, except where tack welding is permitted. Exposed connections of work in place shall not be tack welded. Exposed welds shall be ground smooth with the adjacent surfaces. Exposed surfaces of work in place shall have a smooth finish, and exposed riveting and screw heads shall be flush.

2.3.8 Joints

Where tight fits are required, mill joints to a close fit. Corner joints shall be coped or mitered, well formed, and in true alignment.

2.3.9 WORKMANSHIP

Fabricate metalwork in accordance with approved drawings, cuts, details and samples. Work shall be accurately set to established lines and elevations and securely fastened in place.

PART 3 - EXECUTION

3.1 INSTALLATION

Install items at locations indicated according to manufacturer's instructions. Items listed below require additional procedures.

3.2 ANCHORAGE, FASTENINGS, AND CONNECTIONS

3.2.1 Anchorage

6 Section 05500

Provide anchorage for fastening work securely in place. Set anchors in concrete as the work progresses and space not more than 600 mm on center unless indicated otherwise. Sizes, kinds, and spacings of anchors not indicated or specified shall be necessary for the purpose, as approved.

Anchorage not otherwise specified or indicated includes slotted inserts, expansion shields, and powder-driven fasteners, when approved for concrete; toggle bolts and through bolts for masonry; machine and carriage bolts for steel; through bolts, lag bolts and screws for wood.

Provide inserts of suitable and approved types where required for support or anchorage of equipment and finish construction. Inserts shall be gray or malleable iron castings or galvanized steel unless indicated or specified otherwise. Slotted inserts shall be types required to engage with anchors. Except where specified otherwise, all anchors and anchor bolts in exterior wall shall be zinc-coated and all other anchors and anchor bolts shall be heavily coated with bituminous paint.

3.2.1.1 Fastenings

Do not use wood plugs in any material, except as specified differently.

Use non-ferrous attachments for non-ferrous metal. Make exposed fastenings of compatible materials, generally matching in color and finish, and harmonizing with the material to which fastenings are applied. Conceal fastenings where practicable. Drill and punch to provide clean true lines and surfaces. Countersink metal work to receive hardware.

3.2.1.2 Threaded Connections

Connections shall conform to the minimum standard connections as indicated in Italian Law 1086. Make threaded connections up tight so that threading is entirely concealed. Make bolted work up tight and nick the threads or bush the stem to prevent loosening. Rivet, bolt, and screw heads shall be flat and countersunk in exposed work and elsewhere as required.

3.2.1.3 Anchors and Connecting Members

Provide in concrete or masonry as the work progresses, to avoid unnecessary cutting and drilling. Cut, fit and drill as necessary so all materials are properly set in place and to permit engaging work to be properly installed.

3.2.2 Built-In-Work

All metal work built-in with concrete or masonry shall be formed for anchorage, or be provided with suitable anchoring devices as shown or as required. Furnish metal work in ample time for securing in place as the work progresses.

3.3 WELDING

Weld in a manner to prevent permanent distortion to the connected parts.

Weld continuously along the entire area of contact except where tack welding is permitted. Do no tack weld exposed connections. Grind smooth all welds that will be visible in the finished installation. In addition, see welder's qualifications above.

3.4 FINISHES

Section 05500 7

3.4.1 Galvanizing

Hot-dip galvanize items specified to be zinc-coated, after fabrication where practicable. Galvanize anchor bolts, grating fasteners, washers and parts or devices necessary for proper installation unless indicated otherwise.

3.4.1.1 Repair of Zinc-Coated Surfaces

Repair surfaces damaged by welding or other means with galvanizing repair paint or by the application of stick or thick paste material specifically designed for repair of galvanizing, as approved. Clean areas to be repainted and remove the slag from the welds. Surfaces to which stick or paste material is applied, shall be heated with a torch to a temperature sufficient to melt the metallics in stick or paste; spread the molten material uniformly over surfaces to be coated and wipe the excess material off.

3.4.2 Shop Cleaning and Painting

After surface preparation, apply pretreatment and primer as specified.

Do not coat surfaces of items to be embedded in concrete. Recoat damaged surfaces using surface preparation, treatment, primer and paint that were applied to the adjacent surfaces upon completion of work. Do no apply bituminous protective coatings to items to be finish painted.

3.4.2.1 Environmental Conditions

Do not clean or paint surface when they are damp or exposed to foggy or rainy weather or when the surface temperature is below 7 degrees Centigrade or over 35 degrees Centigrade unless approved by the Contracting Officer’s Technical Representative.

3.4.2.2 Surface Preparation

Unless otherwise specified herein, wash cleaned surfaces which become contaminated with rust, dirt, oil, grease or other contaminants with solvents until thoroughly clean. Insure that steel to be embedded in concrete is free of dirt and grease. Do not paint or galvanize bearing surfaces, including contact surfaces within friction-type joints, but coat them with an approved rust preventative, applied in the shop.

Remove such coating just prior to field erection using a remover approved by the rust preventative manufacturer. Insure that the surfaces, when assembled, are free from rust, grease, dirt and other foreign matter.

Clean steel and iron work by power wire brushing or other approved manual or mechanical means, for removal of rust, loose paint, scale and deleterious substances. Wash cleaned surfaces which become contaminated with rust, dirt, oil, grease or other foreign matter, with solvents until thoroughly clean. The cleaning of steel to be embedded in concrete is not required.

3.4.2.3 Pretreatment, Priming and Painting

Apply pretreatment, primer and paint in accordance with the manufacturer's standard practice. On surfaces that will be concealed in the finished construction or that will not be accessible for finish painting, apply an additional prime coat to a minimum dry film thickness of 3 microns. Tint the additional prime coat with a small amount of tinting pigment.

8 Section 05500

3.4.3 Nonferrous Metal Surfaces

Protect by plating, anodic, organic, or other coatings as specified.

3.4.4 Aluminum Surfaces

3.4.4.1 Surface Condition

Before finishes are applied, exposed aluminum sheets, plates, and extrusions shall be free of roll marks, scratches, rolled-in scratches, kinks, stains, pits, orange peel, die marks, structural streaks, and any other defects which will affect uniform appearance of finished surfaces.

3.4.4.2 Aluminum

Unexposed sheet, plate and extrusions may have mill finish as fabricated.

Section 07220 1

SECTION 07220

ROOF INSULATION

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

PUBLICATION

UNI 4157 (1987) Building. Bitumen for roofing.

Sampling and acceptance limits.

UNI 6541 (1969) Glass fiber materials for thermal and acoustical insulation. Resin bonded slabs. Determination of the Compressive Requirements.

UNI 7891 (1978) Insulating materials.

Determination of thermal conductivity by means of the heat flow meter method.

UNI EN 13165 (2003) Thermal insulation products for buildings - Factory made rigid polyurethane foam (PUR) products – Specification.

UNI EN 12086 (1999) Thermal insulating products for building applications - Determination of water vapor transmission properties.

UNI EN 1604 (1999) Thermal insulating products for dimensional stability under specified temperature and humidity conditions.

UNI EN 826 (1998) Thermal insulating products for compression behavior.

UNI EN ISO 845 (1997) Cellular plastics and rubbers.

Determination of apparent (bulk) density.

Ministerial Decree 26.06.1984 Fire behavior of the board coating.

1.2 Insulation system over concrete slab shall be composed of:

a. Vapor barrier fastened to concrete slab

b. Insulated rigid combined board and clay tile anchoring.

1.3 SUBMITTALS

2 Section 07220

1.3.1 Samples

Submit one sample of each type of proposed insulating material. Also submit two samples each of nails and mechanical fasteners, when used to apply insulation.

1.3.2 Test Reports

Submit certified copies of test reports for test determining:

a. Flame spread and smoke developed ratings for insulation.

b. Resistance to the steam vapor diffusion.

c. Thermal conductivity.

1.3.3 Manufacturer’s Certificates of Conformance or Compliance

Submit certificates for the following:

a. Roof insulation

b. Steep asphalt

c. Adhesive

1.3.4 Manufacturer’s recommendations

Submit two current copies of insulation manufacturer’s recommendations for the following:

a. Spacing of fasteners for portion of vapor barrier in contact with concrete slab.

b. Application of adhesive for insulation

c. Minimum thickness of insulation for steel decks

1.4 DELIVERY AND STORAGE

1.4.1 Delivery

Deliver materials to the site in original sealed containers or packages bearing manufacturer's name and brand designation. Where materials are covered by a referenced specification, containers or packages shall bear specification number, type and class as applicable. Each container of asphalt shall bear flash point (FP), equiviscous temperature (EVT) and finished blowing temperature (FBT) or this information shall be shown on the accompanying bills of lading. Deliver materials in sufficient quantity to allow continuity of work.

1.4.2 Storage

Store, handle, and install materials in a manner to protect them from damage and from wetting and moisture absorption during entire construction period. For 24 hours immediately before laying, store felt rolls on ends in an area maintained at a temperature no lower than 10 degrees Centigrade. Replace damaged material with new material.

1.5 ENVIRONMENTAL CONDITIONS

Do not install roof insulation during inclement weather or when air temperature is below 4 degrees Centigrade or is expected to go below 4 degrees Centigrade, within 24 hours after installation, or when there is ice, frost, or dampness visible on the roof deck.

Section 07220 3

1.6 PROTECTION OF PROPERTY

1.6.1 Flame-Heated Equipment

Locate and use flame-heated equipment so as not to endanger the structure or other materials on the site or adjacent property. Do not place flame-heating equipment on roof. Provide and maintain fire extinguishers.

1.6.2 Protective Coverings

Install protective coverings at paving and building walls adjacent to hoist and kettles prior to starting the work. Lap protective coverings at least 15 centimeters, secure against wind, and vent to prevent collection of moisture on covered surfaces. Maintain protective coverings in place for the duration of roofing work.

1.6.3 Special Protection

Provide approved special protection, or avoid heavy traffic, on completed work when ambient temperature is above 26 degrees Centigrade.

1.6.4 Drippage of Bitumen

Seal joints in deck as necessary, to prevent drippage of bitumen into building or down exterior walls.

1.6.5 Damaged Work and Materials

Restore work and materials damaged during the handling of bitumen and the installation of materials to original condition or replace with new materials.

1.7 FIELD TEST

The following tests shall be performed prior to performing any roofing work. Perform one test per 100 square meters of roof.

1.7.1 Tests for Surface Dryness, Concrete Deck.

a. Foaming: When poured on the surface to which insulation is to be applied, one pint of the bitumen, when heated in the range of 260 to 290 degrees Centigrade, shall not foam upon contact.

b. Strippability: After the bitumen used in the foaming test application has cooled to ambient temperatures, the coating shall be tested for adherence. Should any portion of the sample be readily stripped clean from the surface, the surface shall not be considered dry and application shall not be started. Should rain occur during application, the work shall be stopped and shall not be resumed until the surface has been tested by the method above and found dry.

PART 2 - PRODUCTS

2.1 MATERIALS

4 Section 07220

Materials shall conform to the respective specifications and standards and to requirements specified herein.

2.1.1 Roof Insulation

2.1.1.1 Roof insulation shall be the following materials:

a. Foamed extruded polystyrene board:

Density 33-35 kg/cm Thermal conductivity at 20°C 0.025 W/mK Compressive strength 3 kg/sq.cm Fire behavior Class 1 Water absorption 0.1% Resistance to the steam migration 100-225

b. Rigid insulated combined board for clay tile installation.

Board shall have the following characteristics:

Clay tile holder profile

- Galvanized steel profile 0.65 mm thick

- Zinc coating 275 gr/sq.m

- Breaking load 41 kg/mm

Insulated board characteristics

- Closed cell foamed polyurethane

- Thermal conductivity λ = 0,028 W/m.K.

- K Value 0.36 kcal/sq.m °Ch

- Density 35 kg/cm

- Compressive strength 1 kg/sq.cm

- Resistance to bending stress 2.5 kg/sq.m

- Resistance to the steam spreading µ = 50

- Fire reaction Class 1

2.1.1.2 Cants and Tapered Edge Strips

Preformed cants and tapered edge strips shall be of the same material as the roof insulation, unless unavailable. If cants or edge strips of the same material as the roof insulation are unavailable, provide preservative treated wood or rigid perlite board cants and edge strips.

2.1.2 Asphalt Primer: UNI 4157.

2.1.3 Steep Asphalt

Shall meet the following requirements:

Minimum Maximum Softening point, deg. C 85 96 Flash point, deg. C 225 -- -- Penetration, units:

at 0 deg. C 6 --at 25 deg. C 15 35 at 46 deg. C -- 90 Ductility at 25 deg. C, cm. 2.5 -- Solubility in trichloroethylene, 6% 99 --

2.1.4 Asphalt Roof Cement

Section 07220 5

Shall be asbestos-free and suitable for trowel application to roofing materials and flashings.

2.1.5 Asphalt-saturated Felts

Desaturated moisture free felts weighing 250 grams per square meter shall have perforated 1.5 millimeter diameter holes 25 millimeters on center in each row and 12 millimeters between rows. Felts shall be saturated with 350 grams per square meter. Asphalts shall be self-healing, adhesive, and ductile type. Asphalt roof cement shall conform to the following composition limits:

Minimum Maximum Moisture % -- 3.0 Nonvolatile Matter, % 70.0 -- Mineral and/or other 15.0 40.5 stabilizers, % Asphalt % 35.0 65.0

Asphalt roof cement shall meet the following physical requirements:

a. Uniformity: A thoroughly stirred sample shall show no separation of solvent or settling that cannot be overcome by moderate stirring after standing for 72 hours at room temperature in a closed container.

b. Workability: The cement shall be of a consistency that will spread readily and permit trowel smooth coatings, 2 to 3 mm thick, on prepared roofing, saturated felt, and metal surfaces at ambient temperatures above 10 degrees C.

c. Behavior at 60 Degrees C: The cement shall show no evidence of blistering, and sag or slide shall be no greater than 6 mm.

d. Pliability at 0 Degrees C: There shall be no cracking or separation of the cement from the metal.

2.1.6 Nails and Fasteners

Nails and fasteners shall be flush-driven through flat metal discs of not less than 35 millimeter diameter. Metal discs may be omitted when one-piece composite nails or fasteners with heads not less than 25 millimeter diameter are used. Minimum withdrawal resistance of nails or approved fasteners shall be 20 kilograms each in the specific decks, when driven, except for fasteners specified herein for steel decks. Furthermore nails and fasteners shall be in compliance with the selected insulated materials manufacturer’s specifications.

2.1.6.1 Fasteners for Concrete

Use approved special self-clinching fasteners.

2.1.6.2 Fasteners for Steel Decks

6 Section 07220

Use approved hardened penetrating type fasteners for securing insulation to steel decks. Fasteners shall be designed to be driven through roof deck. Length of fasteners shall be governed by thickness of insulation.

Holding power shall not be less than 55 kg per fasteners; or shall withstand an uplift pressure of 270 kg per square meters when tested in accordance with an Uplift Pressure Test. Furthermore fasteners shall be in compliance with the selected insulated materials manufacturer’s specifications.

2.1.7 Metal Discs

Flat discs or caps of zinc coated steel not lighter than 5/10 millimeter and not less than 35 millimeters diameter. Disc shall be formed to prevent disking. Bell or cup-shaped caps are not acceptable.

3.1 CONDITION OF SURFACES

3.1.1 Inspection of Surfaces

Surfaces on which vapor barrier and insulation are to be installed shall be clean, smooth and dry. Surfaces receiving vapor barrier shall also be free of projections which might puncture the vapor barrier. Condition of surfaces shall be inspected and approved by the Contracting Officer’s Technical Representative immediately before installation is started.

3.1.2 Preparation of Surfaces

Check roof deck surfaces, including surfaces sloped to roof drains and outlets, for defects before work is started; correct defects and inaccuracies in roof deck surface to eliminate hollow and low spots.

Examine steel decks to assure that panels are properly secured to structural members and to each other and that surfaces of top flanges are flat or slightly convex, and are without stiffening grooves.

3.2 APPLICATION

Keep roof insulating materials dry before, during and after installation.

Keep insulation 12 millimeters clear of vertical surfaces penetrating and projecting from the roof surface.

3.2.1 Vapor Barrier

Install vapor barrier in direct contact with concrete deck surface.

Vapor barrier shall consist of one ply of asphalt-saturated felt weighing 700 grams per square meter. Prime concrete deck with asphalt primer and solid mop the asphalt base sheet, lap each sheet 100 millimeters over the preceding sheet. Provide end laps not less than 100 millimeters and stagger laps a minimum of 300 millimeters. Cement together side and end laps with a solid mopping of steep asphalt. Extend 200 millimeters up roof curbs and strip flash at metal flashing flanges.

3.2.2 Temperature of Steep Asphalt

When installing insulation, apply asphalt when temperature of asphalt is within 5 degrees Centigrade of equiviscous temperature (EVT). Do not heat asphalt to or above flash point (FP). Do not heat asphalt above the

Section 07220 7 finish blowing temperature (FBT) for longer than 4 consecutive hours. Use thermometers to check temperatures during heating and application. Have kettlemen in attendance at all times during the heating process to insure that maximum temperature specified are not exceeded.

3.2.3 Wood Nailers

Verify prior to installation of insulation that nailers the same thickness as insulation have been provided at eaves, edges, curbs, walls, and roof openings for securing cant strips, gravel stops, gutters and flashing flanges.

3.2.4 Insulation

3.2.4.1 Insulation Installation

Install insulation directly over the vapor barrier. Lay insulation so that end joints of each course break with those of adjoining courses.

When using multiple layers insulation, joints of each succeeding layer shall be parallel and broken in both directions with respect to the layer below. Firmly embed each layer in a solid steep asphalt mopping; mop only sufficient area to provide complete embedment of one board at a time.

Use not less than 1 kilograms of asphalt per square meter of roof slab for mopping of insulation in place, except for the layer of insulation in contact with steel deck which shall be ribbon or strip-mopped.

Furthermore the installation of the insulating system shall be in compliance with the instructions of the selected roof metal covering manufacturer.

3.2.4.2 Insulation on Poured Concrete Decks

Solidly apply asphalt primer at the rate of one half liter per square meter of roof surface.

3.2.4.3 Insulation on Steel Deck

Strip-mop supporting surface of steel deck at the rate of one half liter of steep asphalt per square meter of roof surface. Apply steep asphalt in ribbons parallel to the ribs on every flange of steel deck for 150 mm rib spacing. On decks with 200 mm rib spacing, apply two ribbons on each flange. Do not permit steep asphalt to flow into ribs of decking. Place insulation while the asphalt is still hot and fluid. Insulation joints shall occur on solid bearing surfaces only, not over open ribs. When multiple layers of insulation are used, mop in the second layer and all succeeding layers as specified herein for mopping layers of insulation in place.

3.2.4.4 Fastening of Insulation on Steel Decks

Provide penetrating-type fasteners in addition to applying steep asphalt for one meter wide strip around perimeter of steel decks regardless of roof slope. Unless approved otherwise, install fasteners in two rows spaced 500 mm apart, staggered and spaced in each row not to exceed 300 mm on centers. Engage fasteners by driving them into top flange of steel deck. If multiple layers of insulation are provided to meet the conductance value or other requirements specified herein, secure first layer with fasteners in addition to mopping, and mop subsequent layers securely in place. Fastening shall conform to the selected insulating system manufacturer’s instructions.

8 Section 07220

3.2.4.5 Cant strips

Where indicated, provide cant strips at intersections of the roof with walls, parapets and curbs extending above the roof. The face of cant strips shall have an incline of 45 degrees. Cant strips shall bear on the wood nailers and fit flush against vertical surfaces. Where possible, nail cant strips to adjoining surfaces. Where cant strips are installed against non-nailable materials, install cant strips in a heavy mopping of steep asphalt or set in asphalt roof cement.

3.2.4.6 Tapered Edge Strips

Where indicated, provide edge strips in the right-angle formed by the junction of the roof and wood nailing strips that extend above the level of the roof. Edge strips shall be tapered from top of wood nailing strips to approximately 3 mm at a slope of 80 mm per meter. Install edge strips flush against vertical surfaces of wood nailing strips. Where possible, nail edge strips to adjoining surfaces. Where installed against non-nailable materials, install edge strips in a heavy mopping of steep asphalt or set in asphalt roof cement.

3.3 PROTECTION OF APPLIED INSULATION

Completely cover each day's installation of insulation with finished roofing specified in Section 07321, "Clay Roofing Tiles." Protect open ends of each day's work with temporary water cut-offs then remove when work is resumed. Protect open spaces at curbs, scuttles, and expansion joints, until permanent roofing and flashing is applied. Storing, walking, wheeling, or trucking will not be permitted directly on insulation or on roofed surfaces. Provide smooth, clean board or plank walkways, runways and platforms near supports, as necessary, to distribute weight to conform to indicated live load limits of roof construction.

Section 07321 1

SECTION 07321

CLAY ROOFING TILE

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/EUROPEAN HARMONIZATION STANDARDS (UNI EN)(UNI ENV)(UNI EN ISO)

UNI 196.1-7 (1996) Test Method of Concrete.

UNI EN 413-1 (1996) Masonry Cement - Part 1 –

Specification.

UNI EN 413-2 (1996) Masonry Cement - Part 2 - Test

Methods.

UNI EN 538 (1997) Clay Roofing Tiles for

Discontinuous Laying - Flexural Strength Test.

UNI EN 539-1 (1997) Clay Roofing Tiles for

Discontinuous Laying - Determination of Physical Characteristics. Part 1 - Impermeability Test.

UNI 8635-1 (1984) Buildings - Tests of Products for

Discontinuous Roofing - Part 1 - Appearance and Preparation Examination.

UNI 8635-2 (1984) Buildings - Tests of Products for

Discontinuous Roofing - Part 2 - Determination of Length.

UNI 8635-3 (1984) Buildings - Tests of Products for

Discontinuous Roofing - Part 3 - Determination of Width.

UNI 8626 (1984) Buildings - Products for

Discontinuous Roofing; Characteristics, Sampling Plan and Limits of Acceptance.

UNI 9460 (1989) Discontinuous Roofing - Practical

Instruction Code for the Design and Execution of Clay and Cement Tile Roofing.

1.2 SUBMITTALS

1.2.1 Product Data

2 Section 07321

Clay tiles

Fasteners

1.2.2 Samples

Clay tiles

1.3 DELIVERY, STORAGE AND HANDLING

1.3.1 Delivery

Deliver materials to the site in shrink-wrapped bundles bearing the manufacturer's name and style designation. Store and handle to protect from damage. Comply with the manufacturer's recommendations for handling, storing and protecting of materials before and during installation.

1.3.2 Storage

Inspect materials delivered to site for damage; unload and store in manufacturer's original packaging. Store only in locations easily accessible for inspection and handling. Break down pallets on ground into bundles of a size and weight compatible with roof structural capacity prior to lifting to roof.

1.4 ENVIRONMENTAL CONDITIONS

Do not lay clay tile roofing when the air temperature is below 4.5oC and lowering. Work will not be permitted with or on frozen materials.

Protect newly laid work from rain, ice, or snow with weather-resistive membrane for at least 48 hours.

1.5 GUARANTEE

The clay tile manufacturer shall provide a guarantee for a period of ten years against scraping or cracking of the tiles caused by freezing. In addition and upon completion and acceptance of the roofing, the Contractor shall furnish to the Contracting Officer a written guarantee valid for 5 years with which the Contractor will guarantee all materials to be of good quality and agrees, under reasonable conditions, that he will provide at his own expense all materials and make all the necessary repairs required by ordinary wear and tear by element, to maintain the roof and flashing in a watertight condition.

1.6 SAFETY PRECAUTIONS

a. Comply with safety requirements of D.L. 624 and D.L. 494 for work on roofs and other elevated locations.

b. Describe safety precautions in the Operational Safety Plan.

1.7 EXTRA STOCK

Provide an extra stock of two percent of each type and color of tile used in clean, labeled containers. Include special shapes in this stock.

Section 07321 3

2.1 CLAY ROOFING TILES

Machine formed natural terra cotta clay roofing tiles, kiln fired to vitrification and free from surface imperfections, with factory preformed holes for attachment, complying with the requirements of UNI 8635-1, UNI 8635-2, UNI 8635-3 and the following:

a. Style: Tegole Portoghese.

b. Color: Natural.

c. Special shapes ridges ventilation penetrations, plumbing vents, ridge end final, snow stop and the items as indicated.

d. Length: 35 cm or 40 cm.

Width: 20 cm or 25 cm.

Weight: 3.2 kg to 3.4 kg

e. Flexural strength: 100 kg (minimum) per UNI EN 538

f. Permeability: 0.7 milliliters per square centimeter per 24 hours

(minimum) per UNI EN 539-1

g. Dimensional tolerances: per UNI 8626…