Section_of_Master_Specifications.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 01101R 1

SECTION 01101R

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 244 cm wide x 122 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 dark brown 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: 31CES/CENM

g. Inspector

h. Contract Management: 31 CONS Construction Flight

i. ERP Coord

Lettering of the sign 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 01101R

Design by

31CES/CENM

PROJECT TITLE

Section 07112 1

SECTION 07112

BITUMINOUS DAMPPROOFING

PART 1 - GENERAL

1.1 DELIVERY AND STORAGE OF MATERIALS

Deliver materials in sealed containers bearing the manufacturer's original labels. Labels shall include the date of manufacture and the recommended shelf life.

PART 2 - PRODUCTS

2.1 MATERIALS

Materials shall conform to the requirements specified below.

2.1.1 Asphalt

Asphalt shall be suitable for use as a mopping coat in dampproofing or as a mopping or plying cement in the construction of membrane waterproofing systems with felts. Asphalt shall have good adhesive and "self-healing " properties, suitable for use above grade where it will not be exposed to temperatures exceeding 50 degrees C. Asphalt shall be homogeneous and free of water. Asphalt shall be prepared from crude petroleum and refined to conform to the following physical requirements.

Minimum Maximum

Softening Point 63 Deg. C 77 Deg. C

Flash Point 232 Deg. C ----

Penetration 0 Deg. C, 200g, 60s, 0.1 mm 10 ----

25 Deg. C, 100g, 5s, 0.1 mm 25 50

46 Deg. C, 50g, 5s, 0.1 mm ---- 130

Ductility at 25 Deg. C 10 ----

Solubility in Trichloroethylene % 99 ----

2.1.2 Asphalt Primer

Asphalt primer shall be suitable for use with asphalt dampproofing and waterproofing below or above ground level, for application to concrete and masonry surfaces. The primer shall be free from water and shall conform to the following requirements:

Saybolt Furol Viscosity at 25 Deg. C. 25 to 125s

Distillation, Volume % of the Primer

Up to 225 Deg. C Not less than 35

2 Section 07112

Up to 360 Deg. C Not more than 65

The residue obtained from the distillation up to 360 Deg. C shall conform to the following requirements:

Penetration at 25 Deg. C, 100g, 5s 20 to 50 Matter Soluble in Trichloroethylene Not less than 99%

PART 3 - EXECUTION

3.1 PREPARATION OF SURFACES

Remove or cut form ties and repair all surface defects as required in

Section 03300, "Cast-In-Place Concrete". Clean concrete and masonry surfaces to receive dampproofing of foreign matter and loose particles and apply dampproofing with a coat of creosote. Prime surfaces to receive asphalt dampproofing with a coat of asphalt primer. Apply priming coat when the ambient temperature is above 5 degrees Centigrade and at a rate of approximately 0.40 liters per square meter, fully covering the entire surface to be dampproofed.

3.2 APPLICATION

Use the cold-application method. Apply dampproofing after the priming coat is dry, but prior to any deterioration of the primed surface and when the ambient temperature is above 5 degrees Centigrade.

3.2.1 Cold-Application Method

Apply two coats of asphalt dampproofing to concrete covering and external plaster prior to covering or external walls finishing insulation laying.

Apply each coat uniformly using not less than 0.8 liter of asphalt per square meter. Apply the first coat by brush to provide full bond with the primed surface, and brush or spray the second coat over a thoroughly dry first coat. Provide a finished surface that is of uniform thickness and impervious to moisture. Recoat porous areas.

Section 07600 1

SECTION 07600

FLASHING AND SHEET METAL

1.1 APPLICABLE PUBLICATIONS

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 THE UNIFICATION OF STANDARDS (UNI)

PUBLICATIONS:

UNI EN 13605 (2004) Copper and copper alloys - Copper profiles and profiled wire for electrical purposes.

UNI 4157 (1987) Bitumen for Roofing. Sampling and

Acceptance Limits.

UNI 9001-2 (1987) Wrought primary aluminum and aluminum alloys. Aluminum group. Al 99,5 (1050 a).

UNI 5649-1 (1988) Copper. Wrought coppers. Qualities, requirements and tests.

UNI EN 10142 (2002) Continuously hot-dip zinc coated low carbon steels strip and sheet for cold forming. Technical Delivery Conditions.

UNI EN 10130 (2000) Cold rolled low carbon steel flat products for cold forming. Technical Delivery Conditions.

UNI EN 10051 (2000) Continuously hot-rolled uncoated plate, sheet and strip of non-alloy and alloy steels. Tolerances on dimensions and shape.

UNI EN 10152 (1994) Electrolytically zinc coated cold rolled steel flat products. Technical delivery conditions.

1.2 SUBMITTALS

1.2.1 Samples

Submit the following samples for approval:

a. Sheet Metal Materials: Two pieces 150 x 250 mm, of each type, and color.

1.2.2 Drawings

2 Section 07600

Submit shop drawings for approval, indicating thickness, dimensions, fastenings and anchoring methods, expansion joints, and other provisions necessary to provide for thermal expansion and contraction. Scaled catalogue cuts may be submitted for factory fabricated items. Submit shop drawings for the following items:

a. Metal base, cap (counterflashing) and valley flashing.

b. Flashing at all roof penetrations.

1.3 PRODUCT DELIVERY STORAGE AND HANDLING

Materials shall be adequately packaged and protected during shipment and inspected for damage, dampness, and wet-storage stains upon delivery to the job site. Damaged or permanently stained materials that cannot be restored to like-new condition shall be removed from the site and replaced at no additional cost to the Government. Carefully handle sheet metal items to avoid damage to surfaces, edges and ends. Crated materials shall not be uncrated until ready for use. Store materials in dry, weathertight, ventilated areas until immediately before installation.

2.1 GENERAL SHEET METAL

Sheet metal items shall be shop or factory fabricated. Furnish sheet metal items in 2.50 meter to 3.00 meter lengths. Single pieces less than

2.50 meters long may be used to connect to factory inside and outside corners, and at ends of runs. Accessories and other items essential to complete the sheet metal installation shall be provided and shall be of the same materials as the items to which they are applied.

2.2 MATERIALS

2.2.1 Steel Sheet, Zinc Coated (Galvanized)

UNI EN 10142

2.2.2 Stainless Steel

Shall be fully annealed, dead soft temper with slow cold-rolled dull finish. Stainless steel shall be made by the electric-arc process, electric-induction process or other suitable process.

Stainless steel shall have the following chemical compositions:

Carbon 0.15 +0.005 Manganese 2.0 +0.04 Phosphorus 0.045 +0.010 Sulfur 0.030 +0.005 Silicon 0.75 +0.05 Chromium 17.0-19.0 +0.20 Nickel 8.0-10.0 +0.10 Other 0.10 Max.

Stainless steel shall have the following mechanical properties:

Section 07600 3

Tensile Strength 515 mPa minimum Yield Strength 205 mPa minimum Elongation in 50 mm 40.0% minimum Brinell Hardness 201 maximum Rockwell B Hardness 92 maximum

The material shall be of uniform quality consistent with good manufacturing and inspection practices. The steel shall have no imperfections of a nature or degree that will adversely affect the stamping, forming, machining, or fabrication of finished parts. Refer to Table I at the end of this section for required weights and thickness.

2.2.3 Aluminum Alloy Sheet and Plate

UNI 9001-2.

2.2.4 Soldering Flux

Use an approved acid type flux for steel.

2.2.5 Solder

50 percent pig lead and 50 percent pure block tin.

2.2.6 Polyvinyl Chloride Reglet

2 mm minimum thickness.

2.2.7 Bituminous Plastic Cement

Shall be an asphaltic base material compatible with the roofing asphalts and asphalt primer.

2.2.8 Copper

Copper sheet or strip shall be a cold-rolled tempered flat product of the weight listed in Table I at the end of this section. Lengths shall not exceed 3 meters. The quality of the materials shall comply with the following tables.

Mechanical Requirements

Tensile Yield Strength Yield Strength Approximate Strength (mPa) at 5% at 2% Rockwell Extension Extension Hardness Under Load Under Load Min. Max. Min. mPa Min. mPa F Scale Superficial 30T

220 275 135 105 60-82 25-49

The material shall have a minimum copper and silver content of 99.9 percent. The material shall be free from defects of a nature that interfere with normal commercial operations, shall be well cleaned, and shall be free from dirt.

2.2.9 Fasteners

Fasteners shall be the same metal or a metal compatible with the item fastened. Use aluminum fasteners with aluminum; and stainless steel

4 Section 07600 fasteners with stainless steel and to fasten dissimilar materials. Use copper or stainless steel nails with copper.

2.2.10 Optional Materials

Optional materials are listed in Table I. Any of the optional materials specified therein may be selected by the Contractor; however, all exposed sheet metal items shall be of the same material, prefabricated, with a factory baked enamel finish, unless indicated otherwise. Colors will be selected by the Contracting Officer’s Technical Representative. The following items shall be considered as exposed sheet metal: Gutters, including hangers; downspouts and leaders; fascias; copings, roof edges and trim, cap and eave flashing.

2.2.11 Sheet Metal

Provide flashing in the roof valleys and where roof decks abut walls, curbs, ventilators, pipes or other vertical surfaces and wherever indicated and necessary to make the work watertight. All aluminum sheet metal shall be pre-finished unless specified otherwise herein. Tempers of metals shall be suitable for their respective forming conditions.

Fabricate sheet metal items to the gage, thickness or weight shown in Table I and join multiple lengths of items together as shown in Table II.

3.1 GENERAL

Comply with the hereinafter paragraphs as applicable to this project.

Surfaces to receive sheet metal must be plumb and true, clean, even, smooth, dry and free from defects and projections which might affect the application.

3.2 WORKMANSHIP

Install sheet metal work with lines, arises, and angles sharp and true.

Exposed surfaces shall be free from visible wave, warp, and buckle, and tool marks. Exposed edges shall be folded back neatly to form a 15 millimeter hem on the concealed side. Sheet metal exposed to the weather shall be watertight with provisions for expansion and contraction.

3.3 NAILING

Nailing of sheet metal shall be confined generally to sheet metal having a maximum width of 500 mm. Nailing of flashing shall be confined to one edge only. Nails shall be evenly spaced not over 80 mm on centers and approximately 15 millimeters from edge unless otherwise specified or indicated. Face nailing will not be permitted. Where sheet metal is applied to other than wood surfaces, detailed shop drawings shall include locations for sleepers and nailing strips required to properly secure the work. Sleepers and nailing strips are specified in Section 06100, "Rough Carpentry".

3.4 CLEATS

Provide cleats for sheet metal 100 mm and over in width. Space cleats evenly not over 300 mm on centers unless otherwise specified or indicated. Cleats shall be not less than 50 millimeters wide x 75

Section 07600 5 millimeters long and of the same material and thickness as the sheet metal being installed. For cleats used in conjunction with flashing:

One end of the cleat shall be secured with nails and the cleat folded back over the nail-heads. Cleats for soldered seams shall be pre-tinned.

3.5 BOLTS, RIVETS AND SCREWS

Install bolts, rivets and screws where indicated or required. Provide compatible washers where required to protect surface of sheet metal and to provide a watertight connection.

3.6 SEAMS

Straight and uniform in width and height with no solder showing on the face.

3.6.1 Flat-Lock Seams

Finish not less than 20 millimeters wide.

3.6.2 Lap Seams

Finish soldered seams not less than 25 millimeters wide. Overlap seams not soldered, not less than 75 millimeters.

3.6.3 Loose-lock Expansion Seams

Not less than 75 millimeters wide, and shall provide minimum 25 millimeters movement within the joint. Joints shall be completely filled with the specified sealant, applied at not less than 3 millimeters thick bed. Sealants are specified in Section 07920, "Joint Sealants".

3.6.4 Flat Seams

Make seams in the direction of the flow.

3.7 SOLDERING, WELDING, AND MECHANICAL FASTENING

Where soldering is specified herein it shall apply to copper, zinc coated steel and stainless steel items. Welding is specified for aluminum of thickness greater than 1 millimeter. Aluminum 1 millimeter or less in thickness shall be butted with space and backed with formed flashing plate; or lock joined, mechanically fastened, and filled with sealant as recommended by the aluminum manufacturer.

3.7.1 Soldering

Pre-tin edges of sheet metals, except lead coated material, before soldering is begun. Soldering shall be done slowly with well heated soldering irons so as to thoroughly heat the seams and completely sweat the solder through the full width of the seam. Edges of lead-coated material to be soldered shall be scraped or wire-brushed to produce a bright surface, and seams shall have a liberal amount of flux brushed in before soldering is begun. Edges of stainless steel to be pre-tinned shall be treated with soldering acid flux. Upon completion of soldering the acid flux residue shall be thoroughly cleaned from the sheet metal with solution of washing soda in water and rinsed with clean water.

Joints in aluminum sheets 1 millimeter or less in thickness shall be made

6 Section 07600 mechanically and sealed with the sealant specified. Aluminum shall not be soldered.

3.7.2 Welding of Aluminum

Joints in aluminum sheets more than 1 millimeter thick shall be welded.

Welding shall be of the inert gas, shield-arc type. The procedures, the appearance and quality of welds made, and the methods used in correcting welding work shall conform to the aluminum manufacturer's recommendations.

3.7.3 Mechanical Fastening of Aluminum

Aluminum alloy sheet metal screws or other suitable aluminum alloy or stainless steel fasteners shall be driven in holes made with a 4 millimeter diameter drill, shall be used in securing side laps, end laps, and flashing. Maximum spacing for fasteners shall be 300 mm. Where end lap fasteners are required to improve closure, they shall be located not more than 50 mm from the end of the overlapping sheet.

3.8 PROTECTION FROM CONTACT OF DISSIMILAR MATERIALS

3.8.1 Copper or Copper-bearing Alloys

Surfaces in contact with dissimilar metal shall be painted with heavy-bodied bituminous paint, or shall be separated by means of moisture proof building felts.

3.8.2 Aluminum

Surfaces shall not contact other metals except stainless steel, zinc, or zinc coating. Where aluminum contacts another metal, the dissimilar metal shall be painted with a primer followed by two coats of aluminum paint.

3.8.3 All Metal

Surfaces in contact with mortar or concrete materials shall be painted with alkali-resistant coatings such as heavy-bodied bituminous paint.

3.8.4 Wood or Other Absorptive Materials

Surfaces that may become repeatedly wet and in contact with metal shall be painted with two coats of aluminum paint or a coat of heavy-bodied bituminous paint.

3.8.5 Dissimilar Metal

Paint with a non-lead pigmented paint if drainage from it passes over aluminum.

3.9 PROVISION FOR EXPANSION AND CONTRACTION

Section 07600 7

Provide expansion and contractor joints at not more than 10 meter intervals for aluminum and at not more than 12 meter intervals for other metals, except that where the distance between the last expansion joint and the end of the continuous run is more than half the required interval spacing an additional joint shall be provided. Space joints evenly.

Extruded aluminum copings and fascias shall be joined by expansion and contraction joints at not more than 4 meter spacing.

3.10 BASE FLASHING

Where sloped roofs abut chimneys, curbs, walls, or other vertical surfaces, the base flashings shall be laid in with the roof covering.

The flashing shall extend up vertical surfaces under or over roof covering as indicated. Where finish wall coverings form a counterflashing, the vertical leg of the flashing shall extend up behind the applied wall covering not less than 150 mm, otherwise the vertical leg of the flashing shall extend up behind a continuous counterflashing and reglet system. Flashings shall be installed and fitted so as to be completely weathertight. Strips shall be fastened at their upper edge to the deck, with compatible large-head roofing nails. End laps shall be soldered, except that provision shall be made for expansion and contraction. At the up-slope side of vertical surfaces extending through the roof decks, metal flashings shall extend over crickets. At the lower side of vertical surfaces extending through the roof decks, metal flashings shall extend onto the roof covering not less than 10 centimeters. Flashings shall be installed and fitted so as to be completely weathertight.

3.11 VALLEY FLASHING

Where sloped roofs meet, the valley flashings shall be laid in with the roof covering. The flashing shall extend beneath both sides of roof covering and be secured to cleats as indicated and specified. Valley flashing shall be fabricated in longest sections possible to minimize the number of joints. Valley flashing shall overlap a minimum of 200 mm in the direction of flow. The top of each section of valley flashing shall be secured to the roof construction with a minimum of six fasteners; the fasteners shall be compatible with the flashing. The edges of the valley flashing shall be formed with hook edges to be compatible with the cleats.

3.12 COUNTERFLASHING

Except where indicated or specified otherwise, insert counterflashing in reglets located from 200 to 250 mm above roof decks and extend down vertical 100 millimeters minimum over upturned vertical leg of base flashing or continuous hook strip not less than 75 millimeters. Exposed edges of counterflashings shall be folded 15 millimeters. Where stepped counterflashings are required, they may be installed in short lengths or may be of the preformed one-piece type. End laps in counterflashings shall be not less than 75 millimeters and shall be made weathertight with plastic cement. Lengths of metal counterflashings shall not exceed 3 meters. The flashing shall be formed to the required shapes prior to installation. Corners shall be factory formed with joints not less than 300 mm from the angle. Flashing shall be secured in the reglets with lead wedges spaced not to exceed 450 mm apart; on short runs, wedges shall be placed closer together. Calked-type reglets or raked joints that will receive counterflashing shall be filled with calking compound.

Calking is covered in Section 07920, "Joint Sealants". The concealed

8 Section 07600 edge of counterflashings built into concrete walls shall be turned up not less than 50 millimeters into the walls. Counterflashing shall provide a spring action against base flashing.

3.13 METAL REGLETS

3.13.1 Friction-type Reglets

Provide with flashing receiving slots not less than 15 millimeters deep,

2.5 centimeters jointing tongues, and upper and lower anchoring flanges.

The flashing shall be inserted the full depth of the slot and locked therein by indentations made with a dull-pointed tool.

3.13.2 Calked-type Reglets

Provide with rounded edges and metal strap brackets or other approved anchors for securing to the concrete forms. They shall be provided with an approved type core to protect them from injury during the installation. Built-up mitered corner pieces shall be provided for internal and external angles. Flashing shall be wedged in the reglets with lead wedges every 45 centimeters and shall be calked full and solid with an approved compound.

3.14 ROOF EDGE FASCIAS AND TRIM

Fabricate in the shapes and sizes indicated and in lengths not less than

2.50 meters. Extend flanges at least 100 millimeters onto roof deck.

Extend the vertical face at least 50 millimeters beyond the roofing and insulation onto the wall face. Provide prefabricated mitered corners for internal and external corners. Set flange on top of wood rail or in a 3 millimeters thick bed of plastic cement. Nail flange securely to wood nailer with large-head barbed-shank roofing nails 35 millimeters long spaced not more than 75 millimeters on centers. Finish shall be baked enamel, color as approved.

3.14.1 Hook Strips

The lower edge of fascias shall be hooked at least 20 millimeters over a continuous hook strip of the same material bent outward at an angle of 45 degrees to form a drip. Nail hook strip to a wood nailer at 150 mm maximum on centers. Where fastening is made to concrete, screws spaced 300 mm on center shall be used and shall be driven in expansion shields set in the concrete. Where horizontal wood nailers are slotted to provide for insulation venting, install hook strips in such a manner that vent slots are not obstructed. Where necessary, install hook strips over 2 millimeters thick compatible spacer or washers.

3.14.2 Joints

Section ends of gravel stops, copings and fascias shall be left open 6 millimeters and backed with a formed flashing plate, mechanically fastened in place and lapping each section end a minimum of 100 millimeters; set laps in plastic cement. Face nailing will not be permitted. Extruded aluminum gravel stops, copings and fascias shall be installed in accordance with the manufacturer's printed instructions and details.

3.14.3 Metal Drip Edge

Section 07600 9

Provide a metal drip, designed to allow water run-off to drip free of underlying construction as indicated. Apply directly on the wood blocking at the eaves and over the underlay along the rakes, extend back from the edge of the deck not more than 100 mm and secure with compatible nails spaced not more than 250 mm on center along upper edge.

3.15 GUTTERS

The hung type of shape indicated and supported on underside by brackets that permit free thermal movement of the gutter. Provide gutters in sizes indicated complete with mitered corners, end caps, outlets, brackets, and other accessories necessary for installation. The outer edge of gutter shall be beaded or reinforced with a stiffening bar not less than 20 millimeters by 5 millimeters of material compatible with gutter. Gutters shall be fabricated in sections not less than 2.50 meters long. The sections shall be lapped a minimum of 25 millimeters in the direction of flow. Gutters shall be joined by riveted and soldered joints. Expansion type slip joints shall be provided midway between outlets. Install gutters below slope line of the roof so that snow and ice can slide clear. Support gutters on approved type adjustable hangers spaced not more than 800 mm on centers. Gutters shall be adjusted to slope uniformly to outlets, with high points occurring as required.

Hangers and fastenings shall be fabricated from metals compatible with the gutters. Finish shall be baked enamel, color as approved.

3.16 DOWNSPOUT

The circular type, 110 mm in diameter, and provided complete including elbows and offsets. Downspouts shall be provided in approximately 3.5 meters lengths; end joints shall telescope not less than 12 millimeters, and longitudinal joints shall be locked. Gutter outlets shall be provided with wire wall strainers of a standard type for each outlet.

Strainers shall fit tightly into outlets and shall be of the same material used for gutters. Downspouts shall be kept not less than 25 millimeters away from walls and shall be fastened to the walls at top, bottom, and are not to exceed 1.50 meter centers intermediately between, with approved type leader straps or concealed rack-and-pin type fasteners; straps and fasteners shall be formed from metal compatible with the downspouts. Downspouts terminating in drainage lines shall be neatly fitted into the drainage connection and the joint filled with a Portland cement mortar cap sloped away from the downspout. Downspouts terminating in splash blocks shall be provided with elbow-type fittings.

Splash blocks shall be concrete as specified in Section 03300, "Cast-in- Place Concrete". Finish shall be baked enamel, color as approved.

Downspout end shall be coated with a 1.50 meter cast-iron pipe.

3.17 FLASHING AT ROOF PENETRATIONS AND EQUIPMENT SUPPORTS

Provide metal flashing for all pipes, ducts, and conduits projecting through the roof surface and for equipment supports, antenna supports, anchors and similar items supported by or attached to the roof deck. Hot exhaust thimble assemblies, power roof ventilators, and exhaust fans, are specified in mechanical Section 15810 “Ductwork and Ductwork Accessories”.

3.17.1 Single Pipe Vents

Flash with a 1 mm thick minimum lead sleeve having a 100 mm flange. Set flange in bituminous plastic cement and nail 80 mm on centers. Top of

10 Section 07600 sleeve shall be bent over and extended down into the vent pipe a minimum of 50 mm.

3.18 PAINTING

Sheet metal work shall not be field painted except as required for the separation of dissimilar metals or for compliance with design requirements. Where painting is specified it shall be factory finished baked enamel.

3.19 CLEANING

Clean all exposed sheet metal work at completion of installation. Grease and oil films, handling marks, contamination from steel wool, fittings and drilling debris shall be removed and the work scrubbed clean. All exposed metal surfaces shall be free of dents, creases, waves, scratch marks, and solder or weld marks.

3.20 REPAIR TO FINISH

Scratches, abrasions, and minor surface defects of finish may be repaired in accordance with the manufacturer's printed instructions and as approved. Finished repaired surfaces shall be uniform and free from scratches, blemishes, and from variations of color and surface texture.

Section 07600 11

TABLE I.

SHEET METAL WEIGHTS AND THICKNESSES

Galvanized Aluminum Steel Copper Stainless Steel mm mm kg/sqm mm

Downspouts and leaders.......... 8/10 4.9

Downspout straps, 5 cm........ 14.7 brass

Strainers, wire diameter........ 4 Gage

Flashing:

Base.................... 1.02 6.125 0.45 Cap (Counterflashing)... 0.81 4.49 0.37 Eave.................... 4.9

Coping and fascias:

Sheets, smooth……….. 4.9 Edge strip and trim……… 7.35

Gutters:

Gutter section.......... 4.9 Continuous cleat........ 4.9 Hangers................. 25 mm x 3 mm (a)

Cover plates.............. 0.81 4.9 0.38

(a) Brass

12 Section 07600

TABLE II. SHEET METAL JOINTS

TYPE OF JOINT

Copper, Item Stainless Designation Steel Aluminum Remarks Flashing:

Base 25 mm flat locked, Each expansion joint soldered, 75 mm lap for all metals shall for expansion be filled with a joint. joint sealing compound.

See Section 07920 "Joint Sealants".

Valley 200 mm overlap in direction of flow.

Cap-in 80 mm lap 80 mm lap Reglet

Reglets Butt joint ------ Seal reglet groove with joint sealing compound, Section 07920, "Joint Sealants".

Section 07600 13

TABLE II. SHEET METAL JOINTS (continued)

TYPE OF JOINT

Copper, Item Stainless Designation Steel Aluminum Remarks

Eave 25 mm flat locked, Same as base flashing.

cleated, 25 mm loose locked, sealed expansion joint, cleated.

Sheet, Smooth Butt with space Butt with space Use sheet flashing back-up plate.

Gutters 5 cm lap, riveted ---- ----and soldered.

Section 09212 1

SECTION 09212

EXTERIOR STUCCO

1.1 APPLICABLE PUBLICATIONS

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.

ITALIAN LAWS

R.D. 2231 dated 16 Nov.1939 Norms for Acceptance of Limes.

D.M. dated 3 June 1968 New Norms for Acceptance Requirements and

Test Methods on Cements.

Decree of Ministry of Public Works, dated 31 August 1972 Norms for Acceptance Requirements of

Cement Agglomerates and Hydraulic Limes.

ITALIAN NATIONAL INSTITUTE FOR THE UNIFICATION OF STANDARDS (UNI)

PUBLICATIONS

UNI 2332-1 (1979) Test Sieves. Test Sieves and

Relevant Receivers and Lids. Dimensions and Tolerances.

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

UNI ENV 413-1 (1994) Masonry Cement - Part 1:

Specification.

UNI EN 459-1 (2002) Building Lime - Part 1:

Definitions, Specifications and Conformity Criteria.

UNI EN 459-2 (2002) Building Lime - Part 2: Test

Methods.

UNI EN 932-1 (1998) Tests for General Properties of Aggregates - Part 1: Methods for Sampling.

UNI EN 932-3 (1998) Tests of General Properties of

Aggregates - Part 3: Procedure and Terminology for Simplified Petrographic Description.

1.2.1 Manufacturer's Catalog Data

Submit complete descriptive literature for stucco components. Clearly mark the data to indicate which type, or item the Contractor intends to provide. Provide sufficient data to show conformance to specified requirements. Include manufacturer’s name, address and phone number.

2 Section 09212

1.3 DELIVERY, STORAGE AND HANDLING

Deliver stucco aggregates to work site in unbroken bags or in their approved containers, plainly marked and labeled with manufacturers' names and brands. Store in dry, well ventilated and weathertight sheds or enclosures. Protect materials from direct contact with the ground.

Handle materials with care to avoid damage.

1.4 ENVIRONMENTAL CONDITIONS

Do not apply stucco when the air temperature is below 4.5oC and falling.

Work will not be permitted with or on frozen materials.

2.1 MATERIALS FOR STUCCO

2.1.1 Portland Cement

Portland cement shall conform to the requirements of D.M. dated 3 June

1968, and UNI ENV 413-1. Portland cement for the finish coat shall be white or light gray in color, as determined by the Contracting Officer’s Technical Representative. One brand shall be used throughout the work.

2.1.2 Hydrated Lime

Hydrated lime shall be of type commercially available and shall conform to the requirements of R.D. 2231 dated 16 November 1939, UNI EN 459-1 and

UNI EN 459-2.

2.1.3 Nails and Staples

Nails for attaching reinforcement over masonry or concrete surfaces shall be large-head galvanized nails with an approved furring device not less than 6 mm in thickness between the reinforcement and the backing.

2.1.4 Metal Lath

Reinforcement shall be expanded metal diamond mesh lath, applied over joints between masonry and concrete surface. Expanded metal diamond lath shall be galvanized type having no stiffening ribs or other projections and having large openings. The metal shall be low carbon steel or copper steel and the lath shall be formed by slitting and then expanding sheets of steel. The width of the strands in the metal lath shall not be less than 1.3 mm and weighing 1 kg/m2. The maximum length of strands shall be 9 cm and the maximum area of any single opening shall be 26 sq mm.

2.1.5 Sand

Sand shall be clean, hard, free of loam, silt, or other impurities, and well graded in accordance with UNI 2332-1, UNI EN 932-1 and UNI EN 932-3.

2.1.6 Water Repellent

Shall be stearate or oleate of ammonium, sodium, or calcium in either powder, liquid or paste; or a commercially manufactured product approved by the Contracting Officer’s Technical Representative.

Section 09212 3

2.1.7 Water

Water shall be clean and free from injurious amounts of oil, alkali, acids, soluble salts and organic impurities.

2.1.8 Manufacturer

Acceptable manufacturers that comply with this specification section are listed below:

a. FARBE Via Udine 63 33030 Maiano (UD) Tel.: 0432-959406 Fax.: 0432-959219

b. RIVVEK Via Boscalto 10/12 31023 Resana (TV) Tel.: 0422-480045 Fax.: 0422-480022

c. RAN KOVER RK S.R.L.

Via Camatte, 1 37040 Zimella (VR) Tel.: 0442-85700 Fax.: 0442-410974

2.2 METAL SUPPORT SYSTEM

Metal support system for exterior suspended ceiling plaster on metal lath as specified in Section 09100, "Metal Support Systems”.

2.3 ACCESSORIES

2.3.1 Corner beads, stops, control joints, and other accessories shall be stainless steel or galvanized steel, predrilled with flanges 2.5 centimeters wide, as minimum.

3.1 GENERAL

Metal lath reinforcement shall be applied straight, without buckles.

Metal lath reinforcement shall be applied over joints between dissimilar materials, such as masonry and concrete. Strips of metal lath reinforcement shall be not less than 75 mm and be nailed at intervals not exceeding 150 mm. Contractor shall utilize specialized manpower for the execution of plasterwork.

3.1.1 Exterior Suspended Ceilings

Provide exterior stucco and quartz-resin coating on ceiling suspension system as indicated. Components of the ceiling suspension system are specified in Section 09100, “Metal Support Systems”.

3.2 STUCCO MIXING

4 Section 09212

Cement and aggregates for each batch shall be accurately measured and mixed dry until evenly distributed and until the mass is uniform in color. No frozen, caked, or lump material shall be used. Batches shall be of such size that they can be entirely used within 1/2 hour. Except when hand-mixing such small batches is specifically approved, mechanical mixers of an approved type shall be used for the mixing of the stucco.

Mechanical mixers, mixing boxes, and tools shall be cleaned after mixing each batch and kept free of stucco from previous mixes. Water content shall be maintained at a minimum. Mixing shall be continued until plasticity is obtained. Mortar that has begun to set shall not be used.

Re-tempering will not be permitted. A water repellent shall be added to the finish coat. If in liquid or paste form, the repellent shall be always added to the finish coat. If in powder form, the water repellent shall be well mixed with the cementing materials. If in liquid or paste form, the repellent shall be added to, and mixed with the mixing water.

The quantity of compound used shall provide 100 g of fatty acid for 50 kg of content in the finish coat.

3.3 STUCCO PROPORTIONS

Proportions of materials for stucco, by volume, shall be as follows:

3.3.1 Portland Cement Stucco

a. Scratch Coat:

1 part Portland cement 3 parts fine aggregates 1/10 part hydrated lime

b. Finish Coat:

(1) Natural Grey: Natural grey Portland cement shall be of the same mix as specified for scratch coat.

3.4 APPLICATION OF STUCCO

3.4.1 Workmanship

Surfaces to receive stucco shall be clean, free from dirt, dust, oil, soot and other particles that might interfere with a satisfactory bond.

Stucco coats shall be applied continuously in one general direction without allowing mortar to dry at edges. Masonry surfaces to receive stucco shall be evenly dampened (not soaked) with a fine fog spray of water before stucco is applied. If surfaces become dry in spots, the dry areas shall be dampened again to restore uniform suction. Where it is impossible to work the full dimension of a wall surface, jointing shall be made at a break, opening or other natural division of the surface.

Edges to be joined shall be dampened slightly to produce a smooth confluence. Stucco, unless otherwise shown or specified, shall be two coat work not less than 20 mm thick. Stucco on soffit surfaces shall be pitched forward to form a drip.

3.4.2 Scratch Coat

The scratch coat shall be approximately 8 millimeters thick over the reinforcement that is placed at 6…