Attachment A- Part 4 - PTS_SECTION_B20_REV.pdf

Exterior Renovation of Building W-143 1709051 Naval Station Norfolk, VA

PART 4 - SECTION B20 - Page 1

SECTION B20

EXTERIOR ENCLOSURE

06/23

B20 GENERAL

RFP Part 3 including the Engineering System Requirements (ESR) provide project specific requirements. The RFP Part 4, Performance Technical Sections (PTS) provide generalized technical requirements that apply to multiple facility types and include more requirements than are applicable to any one project. Therefore, only the RFP Part 4 requirements that apply to the project and further define the

RFP Part 3 project specific requirements are required.

B20 1.1 DESIGN GUIDANCE

Provide the design and installation in accordance with the following references. This Performance Technical Specification (PTS) adds clarification to the fundamental requirements contained in the following

Government Standards. The general requirements of this PTS section are located in PTS Section Z10, General Performance Technical Specification.

Industry standards, codes, and Government standards referenced in the section text that are not found in the Unified Master Reference List (UMRL) in the Federal Facility Criteria (FFC) at the Whole Building Design Guide

(WBDG) website, are listed below for basic designation identification.

Comply with the required and advisory portions of the current edition of the referenced standard at the time of contract award.

B20 1.1.1 Industry Standards and Codes

NATIONAL LUMBER GRADES AUTHORITY (NLGA)

B20 1.1.2 Government Standards

Military Handbook 1013/1A, Design Guidance for Physical Security of

Facilities

UNIFIED FACILITIES CRITERIA (UFC)

UFC 1-200-01

DoD Building Code (General Building

Requirements)(A reference in this PTS section to UFC 1-200-01 requires compliance with the Tri-Service Core

UFCs that are listed therein, which includes the following significant

UFC(s): UFC 3-101-01, Architecture)

B20 1.2 PERFORMANCE VERIFICATION AND ACCEPTANCE TESTING

Provide verification of satisfactory exterior enclosure system performance via Performance Verification Testing, and by field inspection as detailed in this section of the RFP. Provide special tests and special inspections in accordance with Part 2 Section 01 45 00.05 20, Design and Construction

Quality Control. The cost of all testing is included in the Contract.

http://www.wbdg.org/ffc/dod/unified-master-reference http://www.wbdg.org/ffc/federal-facility-criteria http://www.wbdg.org/ http://www.wbdg.org/

PART 4 - SECTION B20 - Page 2

B20 1.2.1 Required Brick Masonry Testing and Field Samples

Where field testing is required, determine masonry strength in accordance with American Concrete Institute (ACI) 530.1.

B20 1.2.2 Air Barrier Field Sample

Not Used.

B20 1.2.3 Air Barrier Performance

B20 1.2.4 Thermal Envelope Performance Testing (Infrared Thermography)

B20 1.2.5 Required Records for Concrete Wall Panels

B20 1.2.6 Precast Concrete Wall Panel Surface Finish Sample

B20 1.2.7 Window Sample Mock-Up

a. Provide mock-up of one (1) typical combination window unit to be used within the project and conduct a field mock-up test in strict compliance with American Architectural Manufacturers

Association (AAMA) 502 method A and method B. Each opening must be tested to achieve performance of American Society of Civil

Engineers (ASCE) 7 calculated requirements (PSF or Kg/m2) for water resistance, which must not exceed .667 % of the products capable water based on AAMA 101/I.S.2. Allowable rates of air leakage for field testing must be 1.5 times applicable AAMA

101/I.S.2 rate for the Product Type and Performance Class.

b. Opening is to be tested under "Quality Control" testing by a designated independent testing agency.

1) Schedule mock-up installation sufficiently in advance of need to allow adequate time for cure of sealants, testing and reconstruction, if needed, without delaying the project.

2) Build mock-up in building enclosure wall in location selected by Owner and Architect.

3) Modify mock-up construction and perform additional tests as required to achieve specified minimum acceptable results.

If corrections are not adequate, construct new mock-up, at written direction of Owner and Architect. Co-ordinate construction of mock-up with other involved trades.

4) Approved mock-ups may become part of completed Work if undisturbed at time of Substantial Completion.

PART 4 - SECTION B20 - Page 3

5) Flood test Mock-up window subsill and obtain approval of DOR prior to installing window unit.

B20 1.2.8 Curtain Wall Systems Field Sample and Testing

B20 1.3 DESIGN SUBMITTALS

Provide design submittals in accordance with PTS Section Z10, General

Performance Technical Specifications, Part 2 Section 01 33 10.05 20, Design

Submittal Procedures, Facilities Criteria (FC) 1-300-09N, Navy and Marine

Corps Design Procedures, UFC 3-101-01, Architecture, and UFC 3-301-01, Structural Engineering.

In addition, UFGS sections listed below or in the body of the PTS text are to be used by the Designer of Record (DOR) as a part of the design submittal.

If the UFGS products or systems are applicable to the project, the DOR must edit these referenced UFGS sections and submit them as a part of the design submittal specification. Edit the specification sections in accordance with the limitations stated in PTS section Z10, General Performance

Technical Specifications.

UFGS Section 03 30 00, Cast-In-Place Concrete

UFGS Section 04 20 00, Masonry

UFGS Section 07 92 00, Joint Sealants

UFGS Section 08 41 13, Aluminum-Framed Entrances and Storefronts

UFGS Section 08 60 45, Translucent Panels

UFGS Section 09 90 00, Paint and Coatings

UFGS Section 09 96 00, High-Performance Coatings

B20 1.4 CONSTRUCTION SUBMITTALS

Submit construction submittals in accordance with PTS Section Z10, General

Performance Technical Specifications. In addition to the Z10 requirements, the Designer of Record (DOR) must approve the following submittals as a minimum;

Shop drawings for reinforcing steel in concrete walls, windows, glazing, paint, and visible exterior materials.

All structural elements necessary for construction.

B20 1.4.1 Manufacturer's Verification Inspection Documentation for

Galvanized Steel

PART 4 - SECTION B20 - Page 4

B20 1.4.2 Field Inspection of Field-erected Concrete Panels

B20 1.4.3 Sustainable Construction Submittals

B2010 EXTERIOR WALLS

Provide repairs to exterior wall system utilizing cast-in-place concrete or brick masonry to match existing, as required. Provide exterior enclosure components and barriers in accordance with UFC 3-101-01, Architecture.

Design all work to comply with UFC 3-101-01, Architecture, and UFC 3-301-01, Structural Engineering, and the following requirements:

a. Vapor Pressure and Hygrothermal Analysis - Perform a job specific vapor pressure and hygrothermal analysis in accordance with UFC 3-101-01, Architecture. The conclusion of the analysis must indicate if a moisture barrier/ vapor retarder is required, the appropriate locations of needed moisture barrier/ vapor retarder, and anticipated dew-point locations in the exterior enclosure during different critical times of the year.

b. Wind Loads - Provide wind load calculations for exterior cladding in accordance with UFC 1-200-01 and UFC 3-301-01 with comparative analysis of the cladding system to be provided.

c. Water Penetration - No water penetration must occur at a pressure of 8 psf

(39 Kg/m2) of fixed area when tested in accordance with ASTM E 331.

d. Insulating Value – Comply with UFC 3-101-01, Architecture, for the

American Society of Heating, Refrigerating, and Air-Conditioning Engineers

(ASHRAE) 90.1 standards to determine the minimum insulating value of the complete wall system.

B201001 EXTERIOR CLOSURE

B201001 1.1 MASONRY VENEER EXTERIOR WALL CLOSURE COMPONENTS

B201001 1.1.1 General Requirements

a. The masonry veneer includes the non-load bearing exterior walls of the structure, and also includes colored mortar, special shapes such as sills, headers, trim units and copings of brick masonry, precast concrete, concrete masonry units, or other approved materials. Tie the veneer to the backup wall system with a system that allows the veneer to move independently of the backup wall system, while being structurally supported.

Allow for expansion and contraction of the veneer without cracking the exterior material.

b. Use common bond, tooled concave joints and full head joint weeps at 24 inches (610 mm) on center in the course immediately above the base flashing. Where rowlocks are permitted, slope rowlocks and project not less than 1/2 inch (13 mm) beyond the

PART 4 - SECTION B20 - Page 5 face of the wall to form a wash and drip. Where required, provide colored mortar conforming to ASTM C270. Provide special shapes where required.

c. Locate expansion/control joints and seal with proper backing material and ASTM C 920 polyurethane sealant, or preformed foam or rubberized expansion joint closure. Conform to UFC 3-101-01 and BIA Technotes 18, 18A. Match joint color of the brick, unless DOR directs otherwise.

d. Conform to ACI 530.1 for masonry veneer installation, including cold weather construction. Antifreeze admixtures are not to be used.

e. Clean the masonry in accordance with manufacturer's instructions and BIA Technote 20.

f. Utilize BIA Technical Notes to design, detail, and construct brick masonry walls. This PTS section amends the BIA documents and takes precedence over similar BIA requirements.

Substitute directive language in the place of BIA suggestive language as required in PTS Section Z10, General Performance

Technical Specifications. The results of these wording substitutions change this document to required procedures.

B201001 1.1.2 Face Brick

a. Brick Masonry Appearance - Do not change source or supply of materials after brick manufacturing work has started. Blend all brick to produce a uniform appearance when installed. An observable "banding" or "layering" of colors or textures caused by improperly mixed brick is unacceptable.

b. Brick Type – Provide brick in accordance with ASTM C216, Grade

SW, type FBX. Test rating of ASTM C67 must be "Not effloresced".

B201001 1.1.3 Split Faced or Ground Faced Masonry

B201001 1.1.4 Cast Stone Trim Units

B201001 1.1.5 The Wall Cavity

B201001 1.1.6 Through-Wall Flashing Components

Provide through-wall flashing over all openings, spandrels, shelf angles, lintels, and built-in structural steel members. Provide through-wall flashing below all openings, parapets copings, sills, and at the base of the wall. Provide a method of weeping water collected by the through-wall flashing to the outside of the wall.

PART 4 - SECTION B20 - Page 6

a. Incorporate weep holes to align with through-wall flashing in cavity wall construction as required by UFC 3-101-01, Architecture, and BIA Technotes. Install flashing according to

BIA Technotes 7, 7A, 7B, 21A, 21B, 21C, 28B, and SMACNA figures

4-1A and 4-1B. Extend metal drip edge flashing beyond the wall plane using a 1/4 inch (6 mm) preformed 45 degree angle turn down.

b. Provide flashing material as required by UFC 3-101-01, Architecture and the following: Provide flashing of 7 ounce copper flashing with a 3 ounce bituminous coating on each side or a fiberglass fabric bonded on each side of the copper sheet.

Sixteen (16) ounce uncoated copper, 28 gauge Type 302 or 304 stainless steel is also acceptable. 'Flexible membrane flashing, plastic or PVC-based membrane flashing is prohibited.

Lap and seal turndown solid metal drip edge flashing to through-wall flashing. Refer to "Flashing" in this section to find requirements for non-through-wall flashing.

c. Incorporate the through-wall flashing in the water resistive barrier and seal joints to flashing to form a shingled effect and direct water to the exterior to the exterior enclosure and away from back-up wall assembly.

d. Where flashing is not continuous, such as at masonry wall opening heads and sills, extend flashing four inches beyond each side of the opening and turn up ends to form a pan and prevent water from reentering the wall cavity.

B201001 1.1.7 Reinforcing in Veneer Layer

B201001 1.2 METAL WALL PANEL EXTERIOR CLOSURE

B201001 1.3 STUCCO EXTERIOR WALL CLOSURE

B201001 1.4 EXTERIOR INSULATION AND FINISH SYSTEM (EIFS)

B201001 1.5 CONCRETE EXTERIOR WALL CLOSURE

B201001 1.6 CONCRETE WALL RESTORATION

New concrete repairs must match the finish of the existing concrete to remain.

PART 4 - SECTION B20 - Page 7

B201001 1.6.1 Existing Concrete Testing

B201001 1.6.2 Admixtures

Air entraining admixtures must conform to ASTM C 260, water-reducing or -retarding admixtures must conform to ASTM C 494, and pigments for integrally colored concrete must conform to ASTM C 979 and ASTM C 1017.

Admixtures must not contain added chlorides.

B201001 1.6.3 Aggregates

Aggregates must conform to ASTM C 33.

B201001 1.6.4 Cement

Match cement composition of cement used in existing concrete to be repaired as determined by samples and testing and conforms to the basic requirements of ASTM C 150, Type I or II. Provide cement with non-shrink (shrinkage compensating) properties and conforms to ASTM

C 1107, Class B or C, expansive cement type.

B201001 1.6.5 Pozzolan

Provide pozzolan to conform with ASTM C 618, Class F, including limit on available alkalis, "Table 2 - Supplementary Optional Chemical

Requirements," and uniformity requirements, "Table 4 - Supplementary

Optional Physical Requirements."

B201001 1.6.6 Epoxy Anchor Adhesives

Use epoxy-resin grout to bond steel anchors to concrete with a 100 percent solids, moisture insensitive, low creep, structural adhesive.

The epoxy must conform to ASTM C 881, type IV; grade and class selected to conform to the manufacturer's recommendations for the application.

The epoxy adhesive must be conditioned, proportioned, mixed, and applied in accordance with the manufacturer's recommendations, except as otherwise specified herein.

a. Epoxy-resin grout - Provide a two-component material, 100 percent solids by weight, formulated to meet the requirements of ASTM C 881, Type I or II. Use type I material when materials or atmospheric temperatures are 70 degrees F (21 degrees C) or above. Use type II material when materials or atmospheric temperatures are below 70 degrees F (21 degrees C). Provide epoxy-resin grout with the ability to structurally rebond cracks, delaminations, and hollow plane conditions in concrete;

must be insensitive to the presence of water; and must have the capability to penetrate cracks down to 5 mils in width.

Materials must have been successfully used in similar conditions for a period of at least five years.

b. Epoxy Injection Ports – Design injection ports for epoxy-resin grout for the intended use as required in this section and made according to the recommendation of the epoxy manufacturer.

PART 4 - SECTION B20 - Page 8

B201001 1.7 WOOD SIDING SYSTEM

B201001 1.8 VINYL SIDING SYSTEM

B201001 1.9 MANUFACTURED FACED PANELS SYSTEMS EXTERIOR WALL SIDING

B201001 1.10 OTHER EXTERIOR WALL CLOSURE

B201002 EXTERIOR WALL BACKUP CONSTRUCTION

B201003 INSULATION AND VAPOR RETARDER

B201004 PARAPETS

B201005 EXTERIOR LOUVERS & SCREENS

If required, provide louvers, which are not an integral part of the mechanical equipment, exterior closures, grilles and screens, storm shutters, and other materials used for a variety of purposes including screening of equipment or as louvers for exterior doors.

Louvers, screens, grilles in must be selected in a color and design that is compatible with the fabric of the exterior architectural character as described below. For frame construction, install in accordance with ASTM E 2112.

B201005 1.1 WALL LOUVERS

Provide drainable blade type wall louvers with blade slopes of 45 degrees minimum, but provide wind driven rain rated louvers for wall louvered rooms without a floor drain within the room. Louvers must withstand a wind load of not less than 30 psf (146 Kg/m2), .08 inch (2 mm) thick 6063-T5 or T52 extruded aluminum in a factory-finished color in accordance with AAMA 2605 with a minimum coating thickness of 1.2 mil to match the building facade.

Wall louvers must bear the AMCA certified ratings program seal for air performance and water penetration in accordance with AMCA 500 , 500L (wind driven rain), and AMCA 511. Provide sill flashing with sloped drain pan at base of louver to collect moisture that migrates down the interior face of the louver. This sill flashing must drain water to the outside of the building. Louvers must have bird screens.

PART 4 - SECTION B20 - Page 9

B201005 1.2 SCREENED EQUIPMENT ENCLOSURE

B201005 1.3 STORM SHUTTERS

B201006 BALCONY WALLS & HANDRAILS

B201007 EXTERIOR SOFFITS

B201008 WALL FLASHING

Flashing must be aluminum or stainless steel or copper. Aluminum must conform to ASTM B 209/B 209M, 0.040 inches (1.27 mm) thick and must be coated to match the item flashed. Stainless steel must conform to ASTM A 167, type

302 or 304, 2D finish, fully annealed, dead soft temper. Thickness must be a minimum of 0.018 inches (0.4572 mm). Copper must conform to ASTM B

370, cold rolled temper. Thickness of copper must be 20 ounces per square foot (6.125 Kg/m2). Incorporate the flashing in the water resistive barrier and seal joints to flashing to form a shingled effect and direct liquid water to the exterior of the exterior enclosure and away from back-up wall assembly.

B201009 EXTERIOR PAINTING AND SPECIAL COATINGS

Apply coatings directly to all wall surfaces. Comply with Master Painters

Institute requirements for surface degradation analysis, surface preparation, paint and coating selection, paint application restrictions for substrate materials, and paint application.

B201009 1.1 GENERAL REQUIREMENTS

Painting practices must comply with applicable federal, state and local laws enacted to insure compliance with Federal Clean Air Standards. Apply coating materials in accordance with Society for Protective Coatings (SSPC)

PA 1. SSPC PA 1 methods are applicable to all substrates.

Provide all paint in accordance with the Master Painter Institute (MPI) standards for the exterior architectural surface being finished. The current MPI, "Approved Product List" which lists paint by brand, label, product name and product code as of the date of contract award, will be used to determine compliance with the submittal requirements of this specification. The Contractor may choose to use a more current MPI

"Approved Product List"; however, only one list may be used for the entire contract. All coats on a particular substrate, or a paint system, must be from a single manufacturer. No variation from the MPI Approved Products

List is acceptable.

Select paint systems for the project in accordance with the MPI Architectural

Painting Decision Tree available on the Whole Building Design Guide. Use

PART 4 - SECTION B20 - Page 10 this interactive MPI Decision Tree website to identify applicable paint system(s) for the project. The MPI Decision Tree identifies paint systems for each interior or exterior coated surface in "Normal" or "Aggressive" environmental conditions and generally lists the applicable paint systems in descending order of performance. The paint system at the top of each substrate list generally indicates the highest performing acceptable coating system.

Choose the "Aggressive" environmental conditions in the MPI Decision Tree for exterior systems that are used in moist humid conditions, abrasive conditions, chemical exposure conditions, or within five miles proximity of the ocean or a body of water. Also use "Aggressive " environmental conditions in interior spaces that are exposed to in moist humid conditions, abrasive conditions, chemical exposure conditions, such as bathrooms, shower rooms, kitchens, chemical storage area, swimming pools, laundry, sanitary areas, commercial kitchens, industrial production areas, and hospital operating rooms provide paint systems that comply with the MPI

Decision Tree "Aggressive" environmental conditions.

Comply with the following requirements when determining the appropriate paint or coating system from the MPI Decision Tree:

a. Some of these paint systems are identified with a "NAVFAC Anchor".

This "NAVFAC Anchor" indicates the minimum performing system that

NAVFAC will accept for that substrate and environmental conditions.

b. When multiple "NAVFAC Anchors" are indicated on a certain substrate and environmental condition, provide the "NAVFAC Anchor" paint or coating system that is most appropriate for the facility use.

c. If only one MPI Decision Tree choice is available for a certain substrate and environmental condition with no indicated NAVFAC preference, provide that sole option for NAVFAC projects.

d. If the MPI Decision Tree provides multiple choices and no NAVFAC preference is denoted, refer to the Additional RFP Requirements below to determine level of performance.

e. If the MPI Decision Tree does not identify all paint system applicable to the facility, utilize the MPI Architectural Painting, Exterior

Systems Manual to identify other appropriate paint systems for the project. Utilize the "Premium Grade" systems and comply with all limitations stated in the MPI "Approved Product List" for each paint product. Products having an MPI VOC Range E3 must be given preferential consideration over lower VOC Ranges. Use higher performing paint systems unless the lower performing paint system can be justified based on a lifecycle cost to include surface preparation, application, disposal, environmental impact, and required recoating cycles. Only use paint products that have been tested for MPI'S "DETAILED PERFORMANCE" or "EVALUATED PERFORMANCE

". Do not use products that have only been tested for "INTENDED USE".

f. If an "Aggressive" environmental condition option is not available in the MPI Decision Tree for a certain substrate, use the "Normal" environmental condition option.

PART 4 - SECTION B20 - Page 11

g. Refer to the Additional Exterior Paint and Coating System

Requirements below for further system requirements.

Paints and coatings must comply with Master Painters Institute Green

Performance Standard GPS-1-12 which is available at the following website;

http://www.specifygreen.com/EvrPerf/EnvironmentalPerformance.html .

Choose paints that provide performance, are environmentally friendly, and that conform to EPA or local environmental regulations, whichever requires the lowest VOC content.

B201009 1.1.1 MPI Gloss Levels

Gloss levels must comply with the MPI system of determining gloss as defined in the Evaluation sections of the MPI Manuals. Utilize the performance characteristics of the paint gloss and sheen to categorize paint rather than manufacturers’ description of the product. The MPI

Gloss Levels are indicated by the notation G1, G2, G3, G4, G5, G6, or G7. Navy only uses MPI Gloss Levels G2, G3, G5, G6.

The MPI Decision Tree indicates a default gloss level for each paint system, however consider the appearance, anticipated conditions, and need for cleaning when establishing the final gloss level for each coated surface of the project. Comply with the following guidance in choosing the appropriate gloss level.

a. Use G2 "Velvet-like" Flat for ceilings, residential walls away from human contact and low traffic areas.

b. Use G3 "Eggshell-like" in high traffic areas for ceilings and walls, when human contact with the wall is limited, and for dark accent colors.

c. Use G5 Semigloss for walls, doors and trim for high durability and clean ability and when a surface is expected to have routine human contact.

d. Use G6 Gloss only in special situations such as for piping identification or special effects.

The MPI gloss and sheen standard values are in accordance with ASTM

D523, and are as follows:

Gloss Level Number Gloss@60 Degrees Sheen@85 Degrees

Gloss Level 1 (G1) -

Matte or Flat Max.5 units

Max.10 units

Gloss Level 2 (G2) -

"Velvet-like" Flat Max. 10 units

10-35 units

Gloss Level 3 (G3) -

"Eggshell-like" Max. 10-25 units

10-35 units

Gloss Level 4 (G4) -

"Satin-like" Max. 20-35 units

Min. 35 units

Gloss Level 5 (G5) -

Semi-Gloss 35-70 units http://www.specifygreen.com/EvrPerf/EnvironmentalPerformance.html

PART 4 - SECTION B20 - Page 12

Gloss Level 6 (G6) -

Gloss 70-85 units

Gloss Level 7 (G7) –

High Gloss More than 85 units

B201009 1.1.2 MPI System Designations and Table Abbreviations

The MPI coating system number description is found in either the MPI

Architectural Painting Specification Manual or the Maintenance

Repainting Manual and defined as an exterior system

a. EXT - MPI short-term designation for an exterior coating system on a new surface.

b. REX - the MPI short term designation for an exterior coating system used in repainting projects or over existing coating systems.

c. DSD - the MPI short-term designation for Degree of Surface

Degradation as defined in the Assessment sections in the MPI

Maintenance Repainting Manual. Degree of Surface Degradation designates the MPI Standard for description and appearance of existing condition of surfaces to be painted. This DSD classification is used to determine the proper surface preparation necessary for painting.

B201009 1.1.3 Surface Preparation

Comply with the "Exterior Surface Preparation" section of the MPI

Architectural Painting Specification Manual, or the Exterior Surface

Preparation” section of the MPI Maintenance Repainting Manual. All suggestive language such as "may" or "should" are deleted from the standard and "must" inserted in its place. Suggestive language such as "recommended" or "advisable" is deleted from the standard and

"require" or "required" inserted in its place. The results of these wording substitutions change this document to required procedures.

For surface preparation, determine a MPI DSD Assessment of each surface and comply with the MPI Surface Preparation Requirements relating to the assessments. Not-withstanding MPI requirements, clean exterior ferrous metal that is exposed to weather conditions

(wind, precipitation, solar degradation, and humidity) to a SSPC SP

10 level (near white).

Remove dirt, splinters, loose particles, grease, oil, and other foreign matter and substances deleterious to coating performance as specified for each substrate before application of paint or surface treatments. For existing buildings, use MPI Maintenance Repainting

Manual to determine the coatings that need to be removed. Remove deteriorated or loose coatings before repainting begins. Remove oil and grease prior to mechanical cleaning. Program cleaning so that dust and other contaminants will not fall on wet, newly painted surfaces. Spot-prime exposed ferrous metals such as nail heads on or in contact with surfaces to be painted with water-thinned paints with a suitable corrosion-inhibitive primer capable of preventing flash rusting and compatible with the coating specified for the

PART 4 - SECTION B20 - Page 13 adjacent areas.

B201009 1.2 ADDITIONAL EXTERIOR PAINT AND COATING SYSTEM REQUIREMENTS

In addition to the MPI Decision Tree, comply with the following paint system requirements:

B201009 1.2.1 Exterior Concrete Coatings

a. Elastomeric Coating in accordance with UFGS Section 09 90 00 and the following:

Existing concrete, previously painted

Primer Intermediate Top Coat System DFT

MPI REX 3.1F-G1

(Flat)

Per

Manufacturer

MPI 113 MPI 113 400 microns

16 mils

Primer as recommended by manufacturer.

Topcoat: Coating to match adjacent surfaces.

Note: Surface preparation and number of coats to achieve minimum dry film thickness of 400 microns 16 mils

B201009 1.2.2 Exterior Masonry Coatings

a. For existing previously painted masonry, provide elastomeric coating in accordance with UFGS Section 09 90 00 and the following:

Existing masonry, previously painted

Primer Intermediate Top Coat System DFT

MPI REX 3.1A-G1

(Flat)

MPI 42 MPI 42 MPI 10 N/A

Texture: Fine

Surface preparation and number of coats in accordance with manufacturer’s instructions.

Topcoat: Coating to match adjacent surfaces.

b. For existing/new uncoated masonry provide a polyurethane, clear, two-component coating system in accordance with UFGS Section

09 96 00.

B201010 EXTERIOR JOINT SEALANT

Provide sealant joint design, priming, tooling, masking, cleaning and application in accordance with the general requirements of Sealants: A

Professionals' Guide from the Sealant, Waterproofing & Restoration

Institute (SWRI). All sealant must conform to ASTM C 920.

Joints must include proper backing material for sealant support during application, control of sealant depth, and to act as a bond breaker. Use filler boards, backer rods and bond breaker tapes. Provide priming unless specifically not recommended by the sealant manufacturer. Applied sealant must be tooled. Tooling must not compact sealant too less than the minimum

PART 4 - SECTION B20 - Page 14 sealant thickness required. Mask adjacent surfaces to control sealant boundaries during sealant application.

B201011 SUN CONTROL DEVICES (EXTERIOR)

B201012 SCREEN WALL

B201090 OTHER EXTERIOR WALLS

B2020 EXTERIOR WINDOWS

Provide standard windows in compliance with American National Standards

Institute/American Architectural Manufacturers Association/Window and Door

Manufacturers Association (ANSI/AAMA/WDMA) 101, Steel Windows Institute

(SWI) SWS, UFC 4-010-01, and the design criteria of ASCE 7 for glazed windows to meet the Building Code.

If required, provide windows that meet the requirements of AAMA/WDMA

101/I.S.2. Commercial (non-residential) construction must utilize windows that comply with AAMA designation HC-40 (60 psf - 293 Kg/m2) for windows that do not have to meet anti-terrorism requirements, and HC-60 (90 psf -

439 Kg/m2) for commercial windows that are required to meet anti-terrorism requirements, unless the wind pressure or blast pressure on the building exceeds the design pressure for these minimum windows. Determine the wind pressure on the building by converting the ASCE-7 basic wind speed to wind pressure and find the corresponding structural test pressure in the AAMA specific requirements or optional performance tables. If the commercial

(non-residential) window wind pressure exceeds 60 psf (293 Kg/m2) or exceeds

90 psf (439 Kg/m2), utilize a higher AAMA designated window complying with the calculated wind pressure. Anti- Terrorism window systems (including connections) must meet the testing requirements of UFC 4-010-01 when tested in accordance with ASTM F1642.

Comply with ASTM E 2112 and with flashing and weather-resistive barrier manufacturers’ recommendations to install windows in framed wall construction. Comply with window flashing details from BIA for masonry back-up and veneer walls. Engineer and install window cleaning access and anchorage to the exterior wall or roof for facilities over three stories tall without interior window cleaning access from pivoting or tilting sash.

Provide anchors in accordance with Occupational Safety and Health

Administration (OSHA) standard 29 CFR Section 1910.66.

Windows must be provided with sills on the exterior and stools on the interior of the opening. Sills must be special shape or cut unit masonry or precast concrete in masonry exterior construction and extruded aluminum or aluminum-wrapped wood framing or formed metal in other construction.

Positively slope sills away from windows. Window stools must be slate or solid polymer for commercial.

PART 4 - SECTION B20 - Page 15

B202001 WINDOWS

Exterior windows must match existing mullion, muntin, and operable sash layouts. Include operating hardware, non-corroding framed metal screens for operable sash, and security grilles. Provide jamb support for larger windows where recommended by manufacturer. Metal windows with insulating glass must have thermally broken frames and sash. Provide thermally broken windows and window assemblies where separating conditioned and unconditioned spaces. Provide windows and window assemblies that bear an

NFRC energy performance label and meet or exceed current EnergyStar requirements.

Provide glazing in exterior windows in accordance with section B202004

EXTERIOR GLAZING.

B202001 1.1 STANDARD WINDOW SYSTEMS

B202001 1.1.1 Steel Windows

Conform to SWI SWS. Solid hot-rolled steel shape welded frames and mullions. Provide chemically cleaned and primed galvanized frames with polysteel powder coat finish. Provide glazing beads, steel frame screens with aluminum mesh at operable sashes, hardware and locks, and glazing. Aluminum screens must comply with ANSI/SMA 1004.

B202001 1.1.2 Aluminum Windows

Conform to ANSI/AAMA/WDMA 101. Factory finish aluminum windows and provide with aluminum frame screens with aluminum mesh at operable sash, hardware and locks, and glazing. Aluminum screens must comply with ANSI/SMA 1004.

Exposed aluminum surfaces must be factory finished with an AA 45 anodic coating or an AAMA organic coating. Provide a minimum of architectural Class II anodized coating or a baked enamel finish conforming to AAMA 2604 for one- or two-family residential dwelling construction. Provide a minimum of architectural Class I anodized coating or a high-performance organic coating conforming to AAMA 2605 for all other construction. AAMA coatings must have a total dry film thickness of 1.2 mils.

B202001 1.1.3 Security Windows

B202001 1.1.4 Plastic Windows, Factory Finish

B202001 1.1.5 Wood Windows

B202002 STOREFRONTS

PART 4 - SECTION B20 - Page 16

B202003 CURTAIN WALLS

B202004 EXTERIOR GLAZING

Provide setting and sealing materials, stops and gaskets as recommended by the glass or acrylic sheet manufacturer.

Provide warranty for insulating glass units for a period of 10 years against development of material obstruction to vision (such as dust or film formation on the inner glass surfaces) caused by failure of the hermetic seal, other than through glass breakage. The Contractor is required to provide a glazing warranty for curtain wall glazing written directly to the

Government.

Provide warranty for polycarbonate sheet glazing for a period of 5-years against breakage, coating delamination, and yellowing.

Glazing thickness indicated in the following paragraphs is the minimum acceptable thickness. Provide thicker glazing if required by the manufacturer for the given application.

B202004 1.1 GLASS

B202004 1.1.1 Clear Glass

B202004 1.1.2 Heat-Absorbing Glass

B202004 1.1.3 Wire Glass

B202004 1.1.4 Laminated Glass

ASTM 1172, fabricated from two pieces of Type I, Class 1, Quality q3 glass laminated together with a clear 0.030 inch (0.75 mm) thick polyvinyl butyral interlayer. The total thickness must be nominally

1/4 inch (6 mm). Laminated glass used for anti-terrorism window assemblies must be a minimum of 1/4 inch (6 mm) thickness.

B202004 1.1.5 Insulating Glass Units

Provide insulated glass using a combination of the interior and exterior glazing materials listed below filled with a thermal resistive gas. The air space must be sized to meet the thermal requirements below but not less than one half inch (12 mm) for non-residential construction and one quarter inch (6 mm) minimum for residential construction.

Provide active solar control glazing by using tinting, maximum thermal

PART 4 - SECTION B20 - Page 17 resistance, special coatings to meet Energy Star climate zone and window type requirements (including frames), and comply with the performance characteristics below. Provide an active low-emissivity coating on glass surface number 2 (the inside surface of the exterior glass pane).

If the building is located in a heat dominated climate zone, the facility is designed to utilize solar heat gain to augment the HVAC system, and the window overhang design prohibits excessive solar gain;

a passive low-emissivity coating may be used to accommodate the design. Design occupied spaces adjoining passive low-emissivity coated glass for comfortable use of the space.

Provide two panes of glass separated by a dehydrated airspace and hermetically sealed. Dimensional tolerances must be as specified in

IGMA TR-1200. The units must conform to ASTM E 773 and ASTM E 774, Class A. Provide primary seal, secondary seal, and spacers to eliminate moisture and hydrocarbon vapor transmission into airspace.

Warranty insulating glass units against development of material obstruction to vision (such as dust, fogging, or film formation on the inner glass surfaces) caused by failure of the hermetic seal for a 10-year period following acceptance of the work.

The interior glass pane must be one of the following:

1. Typically ASTM C 1036, Type I, Class 1, Quality q4, minimum 1/4 inch (6 mm) thick;

2. ASTM C 1048, Grade B (fully tempered), Style I (uncoated), Type

I, Class 1 (transparent), Quality q4, minimum 1/4 inch (6 mm) thick when required by ANSI Z97.1 or possible human impact is anticipated;

3. ASTM C 1172, laminated glass as specified above, when required by antiterrorism requirements and code requirements for windborne debris.

The exterior glass pane must be one of the following:

1. Typically ASTM C 1036, Type I, Class 2 (tinted heat absorbing or reflective), Quality q4, minimum 1/4 inch (6 mm) thick;

2. ASTM C 1048, Grade B (fully tempered), Style I (uncoated), Type

I, Class 2 (tinted heat absorbing or reflective), Quality q4, minimum 1/4 inch (6 mm) thick when required by ANSI Z97.1 or possible human impact is anticipated.

Insulating glass performance for active solar control using low-emissivity coatings:

1. Visible Light Transmission, 66% or lower

2. Outdoor Light Reflectance, 11% or greater

3. Solar Heat Gain Coefficient, .36 or lower

PART 4 - SECTION B20 - Page 18

4. Winter U-Value, .35 Btu/square foot x hr x degree F or lower for residential construction and .29 Btu/square foot x hr x degree F or lower for all other types of construction.

B202004 1.1.6 Tempered Glass

ASTM C 1048, Kind FT (fully tempered), Condition A (uncoated), Type

I, Class 1 (transparent) or 2 (tinted heat absorbing, Quality q3, 1/4 inch (6 mm) thick.

B202004 1.1.7 Bullet-Resisting Glass

B202004 1.1.8 Patterned Glass

B202004 1.1.9 Spandrel Glass

B202004 1.1.10 Spandrel Glass with Adhered Backing

B202004 1.2 PLASTIC GLAZING

B202004 1.3 FRAGMENT RETENTION FILM FOR GLAZING

B202090 OTHER EXTERIOR WINDOWS

Provide translucent panels of glass-fiber reinforced polyester panels conforming to ASTM D3841 and to the requirements of AAMA/WDMA/CSA

101/I.S.2/A440. Provide the exposed faces of fiberglass sandwich type panels with a permanent glass veil erosion barrier embedded integrally to provide maximum long term resistance to reinforcing fiber exposure. The exterior face sheet must be uniform in strength and resistant to penetration by pencil point.

Use 6063-T6 aluminum I-beams with provisions for mechanical interlocking of muntin-mullion and perimeter to prevent high and low intersections which do not allow full bonding surface to contract with face material. I-beam width no less than 7/16 inch. Machine I-beam grid to tolerances of not greater than plus or minus 0.02 inch for flat panels. Panels must withstand 1200 degrees

F fire for a minimum of one hour without collapse or exterior flaming. Panel construction must meet the following requirements:

1. Light transmission 30 percent.

2. Assembled panel thickness 2-3/4 inches.

3. Grid must match existing muntin-mullion layout.

PART 4 - SECTION B20 - Page 19

B2030 EXTERIOR DOORS

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