A_MDACS-Final(Sept 2017).pdf

MARIANAS NAVY AND MARINE

CORPS DESIGN AND

CONSTRUCTION STANDARDS

September 2017

MDACS

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TABLE OF CONTENTS

FOREWORD

EXECUTIVE SUMMARY .................................................................................................. 11 CHAPTER 1

INTRODUCTION AND OVERVIEW .................................................................................. 12 CHAPTER 2

2.1 Purpose / Objectives

2.2 Execution Strategies

2.3 Responsibility for Compliance

GUAM ENVIRONMENTAL SETTING ............................................................................... 14 CHAPTER 3

3.1 Geography

3.2 Climate

DESIGN AND CONSTRUCTION CRITERIA ....................................................................... 16 CHAPTER 4

4.1 Applicable Building Codes

4.2 Applicable Unified Facilities Criteria (UFC)

4.3 Wind Speed Criteria

4.4 Seismic Criteria

4.5 Corrosion Prevention and Control Criteria

4.6 Sustainability Criteria

4.7 Accessibility Criteria

4.8 Blind Vendor Facilities

4.9 Anti‐Terrorism / Force Protection Criteria

4.10 Physical Security

4.11 Installation Appearance

4.12 Hot Humid Climate Design

4.13 System Safety Engineering

4.14 Industrial Control Systems (ICS) Engineering

4.15 MEC/ESS

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DESIGN AND APPEARANCE GUIDELINES ....................................................................... 23 CHAPTER 5

5.1 Site and Landscape Design

5.2 Architecture

5.2.1 Building Character

5.2.2 Exterior Building Envelope

5.2.3 Building Entrances / Openings and Covered Walkways

5.2.4 Roofing Systems

5.3 Exterior Color

5.4 Base Exterior Signs

5.5 Solar Hot Water Panel and Photovoltaic Panel Systems

5.6 Exterior Lighting

5.6.1 Low Level Lighting Types

5.6.2 Landscape Lighting

5.6.3 Street and Parking Lights

5.6.4 Sign Lighting

5.6.5 LED Lighting

5.6.6 Solar (Photovoltaic) Powered Lights

5.7 Temporary Buildings

5.8 Interior Design

5.8.1 Objectives

5.8.2 General Interior Requirements

CHAPTER 6 DESIGN & CONSTRUCTION STANDARDS

A10 FOUNDATIONS

A1010 STANDARD FOUNDATIONS

A1030 SLAB ON GRADE

A20 BASEMENT CONSTRUCTION

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A2020 Basement Wall Construction

B10 SUPERSTRUCTURE

B1010 Floor Construction

B1020 Roof Construction

B20 EXTERIOR ENCLOSURE

B2010 Exterior Walls

B2020 Exterior Windows

B2030 Exterior Doors

B30 ROOFING

B3010 Roof Coverings

C10 INTERIOR CONSTRUCTION

C1010 Partitions

C1020 Interior Doors

C1030 Specialties

C20 STAIRS

C2010 STAIR CONSTRUCTION

C30 INTERIOR FINISHES

C3010 Wall Finishes

C3020 Floor Finishes

C3030 Ceiling Finishes

C3040 Interior Coatings & Special Finishes

D20 PLUMBING

D2010 Plumbing Systems

D2020 Domestic Water Distribution Systems

D2030 Soil, Waste & Vent Systems

D2040 Roof Drains

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D2090 Other Plumbing Systems

D30 HVAC

D3030 Cooling Generating Systems

D3040 Distribution Systems

D3050 Terminal and Package Units

D3060 HVAC Controls

D40 FIRE PROTECTION

D4010 Fire Alarm and Detection Systems

D4020 Fire Suppression Systems

D50 ELECTRICAL

D5010 Electrical Service and Distribution

D5020 Lighting System

D5030 Electrical Devices

D5040 Telecommunications Systems

D5090 Other Electrical Services

E20 FURNISHINGS

E2010 fIXED fURNISHINGS

F20 SELECTIVE BUILDING DEMOLITION

F2010 Building Elements Demolition

F2020 Hazardous Components Abatement

G10 SITE PREPARATIONS

G1010 Site Clearing

G1030 Site Earthwork

G1040 Hazardous Waste Remediation

G20 SITE IMPROVEMENTS

G2010 Roadways

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G2020 Parking Lots

G2030 Pedestrian Paving

G2040 Site Development

G2050 Landscaping

G30 SITE CIVIL/MECHANICAL UTILITIES

G3010 Water Supply

G3020 Sanitary Sewer

G40 ELECTRICAL UTILITIES

G4010 Electrical Distribution

G4020 Site Lighting

G4030 Communications Systems

Appendix A – GEOTECHNICAL COMPONENTS

INTRODUCTION

GEOLOGICAL CONSIDERATIONS

EARTHWORK

STRUCTURAL FOUNDATIONS

Appendix B – Drawings

Large Bus Shelter

Small Bus Shelter

Mailbox Shelter

Pavilion

Solar Panel Enclosure – Sheet 1

Solar Panel Enclosure – Sheet 2

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TABLE OF FIGURES

Figure 1: Map of Guam

Figure 2: Flying Debris

Figure 3: Plywood Projectile

Figure 4: EFS

Figure 5: Exterior Louvers

Figure 6: Typhoon Shutter Vertical Coiling

Figure 7: Typhoon Shutter Side Hinged

Figure 8: Typhoon Shutter Other Systems

Figure 9: Sun Control Devices

Figure 10: Window Types

Figure 11: Door Sill Pan Flashing

Figure 12: Other Door Systems

Figure 13: Typhoon Shutter Add‐on Example

Figure 14: Concrete‐formed Simulated Tile Roof

Figure 15: Concrete Batten Roof

Figure 16: Roof Style

Figure 17: Typhoon Damaged Roof Insulation

Figure 18: Integral Concrete Gutter and Fascia

Figure 19: Solar Panel Enclosure

Figure 20: Sample Street Light

Figure 21: Combination Photovoltaic & LED Streetlight

Figure 22: Standard Street Lights and Poles

Figure 23: Solar Powered Fixtures

Figure 24: Low Level Lighting Types

Figure 25: Landscape Lighting

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Figure 26: Street and Parking Lights

Figure 27: Sign Lighting

Figure 28: LED Lighting

Figure 29: Solar Powered Lights

Figure 30: Riser Pole Detail

Figure 31: Typical Roadway Utility Location

Figure 32: Large Bus Shelter

Figure 33: Small Bus Shelter

Figure 34: Mailbox Shelter

Figure 35: Pavilion

Figure 36: Solar Panel Enclosure: Plan

Figure 37: Solar Panel Enclosure: Section/Elevation

Figure 38: Emergency Generator Enclosure

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FOREWORD

This is a living document that will be periodically reviewed, updated, and made available to users as part of the Naval Facilities Engineering Command, Marianas (NAVFACMAR) responsibility for providing technical criteria for design and construction projects in Guam. Defense agencies should contact NAVFACMAR for document interpretation and improvements.

This document replaces the MRACS and is effective upon issuance.

AUTHORIZED BY:

Arlene Aromin, P.E.

Chief Engineer and Capital Improvements Business Line Coordinator

NAVFACMAR

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EXECUTIVE SUMMARY CHAPTER 1

The Marianas Navy and Marine Corps Design and Construction Standards (MDACS) is a guide that provides design and construction guidelines that encourages a unified, locally‐influenced, consistent strategy for the design of physical improvements in Guam. The MDACS represents an update to the MRACS (Marianas Region Architectural and Construction Standards), a regional design guideline that has been successfully used by NAVFAC’s industry partners – both designers and constructors – for over a decade to provide quality facilities in a challenging environment subject to corrosive elements, high wind velocity, and strong seismic forces. The MDACS provides a single guideline to be used in new construction and renovation projects for designing all Navy and Marine Corps shore‐based facilities located in Guam and Micronesia.

Coherent appearance, quality design and appropriate construction are important elements in providing the highest quality working and living environment for Navy and Marine personnel and their dependents. The MDACS shall be used as a guideline in conjunction with the applicable base Installation Appearance Plan (IAP) which provides each base with their own distinct identity.

This MDACS is developed based on tried and tested construction types and building components that have been used successfully in Guam. Specificity of the design requirements in this document is intended to provide consistent facilities that can be cost‐effectively maintained with consideration to Guam’s unique climate, environmental challenges and limited resources. This document is intended to supplement – but not supersede – overarching Department of Defense (DoD) criteria. This document does not take precedence over DoD Unified Facilities Criteria (UFC) or Facilities Criteria (FC); and is intended to be implemented within the constraints established by DoD Unified Facilities Guide Specifications (UFGS). No aspect of this guidance is intended to indicate preferred proprietary products or systems. General Geotechnical conditions and geological overview of Guam is included in Appendix A – GEOTECHNICAL COMPONENTS.

The MDACS, like any other “design and construction standards” document, will require regular updates to keep up with new polices, new technologies, and coordination with changes to the applicable base installation appearance plan as appropriate (see 4.11).

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INTRODUCTION AND OVERVIEW CHAPTER 2

This Standard shall be applied during facility development, design and construction phases in conjunction with other applicable Criteria, Building Codes and Standards. Where these standards indicate “may”, the written instruction is optional. Where “avoid”, “must”, “will”, “should”, or “shall” is indicated, the written instruction is mandatory.

For purposes of this Standard, “inhabited” is defined as a structure with personnel assigned to occupy. As an example, a warehouse with an office with assigned staff is considered an inhabited structure / facility.

It is acknowledged that this document was prepared during a bid‐favorable bidding climate.

Change to a less favorable bidding climate may change the affordability of the requirements set forth in this document. Requirements may, in such cases, need to be adjusted on a project‐by‐ project basis. Changes to requirements shall be vetted via the procedure described in Section 2.3.

2.1 Purpose / Objectives

a. Quality Base Appearance: Establish consistency and excellence in the design and construction of Navy and Marine base facilities.

b. Efficient, Functional and Comfortable Facilities: Provide guidance to planners, designers, architects, engineers, contractors, fabricators and suppliers by listing appearance standards and appropriate construction components that work in Guam’s challenging environment which is subject to a salt corrosive environment, high humidity, high wind velocities and strong seismic forces.

c. Safe and Secure Environment

2.2 Execution Strategies

a. Select standardized building components to reduce life‐cycle costs and simplify long‐term maintenance, repair and spare parts requirements. Comply with the Guam Joint Military Master Plan Sustainability Program for Marine Base projects.

Federal Acquisition Regulation (FAR) Paragraph 25.202 notes exceptions to the Buy American Act. Subpart 25.4 – Trade Agreements allow acquisitions of foreign construction materials for construction contracts with an estimated acquisition value of $7,358,000 or more. Refer to FAR for the list of countries, details and limitations.

Foreign products shall be proven to be of equal or better standard as the specified performance requirements.

b. Incorporate “green” concepts and pursue sustainable development aspects to the fullest extent possible, consistent with mission, budget and client requirements. Unless noted

13 | P a g e otherwise, new buildings and major renovations shall comply with DoD and NAVFAC sustainable requirements in effect as of the project’s design contract award date.

c. All construction shall conform to a coherent exterior theme through compliance with this guide and each Base IAP that reflect and highlights the military mission and the island environment.

2.3 Responsibility for Compliance

The A‐E (Architect‐Engineer) and/or Designer of Record (DOR) contracted to work on any Navy or Marine Corps project in Guam and the Marianas Islands shall be responsible for ensuring project compliance to these standards and all applicable DoD criteria. Exceptions or waivers to DoD Unified Facilities Criteria (UFC) must be processed in conformance with MIL‐STD 3007.

MDACS exceptions or waivers that do not otherwise violate overarching DoD criteria require written approval by the NAVFAC Marianas Chief Engineer or his/her designee.

Waiver request(s) shall be resolved at the earliest practicable stage prior to completion of the Final Request for Proposal (RFP) solicitation documents. Substitution or variance requests submitted after award of the construction contract involving exceptions shall be similarly processed. Time extensions and additional costs attributed to the preparation, coordination and review of waiver requests will not be granted.

DoD facilities or spaces leased or sub‐leased to private entities (non‐government companies such as local banks, food vendors, etc.), shall be in compliance with all applicable UFC/FC requirements, and applicable Installation IAPs, Utility Criteria, Sign Standards, etc. Private entities shall submit design documents for government review/ acceptance and shall ensure any fire protection system that is new or upgraded is also certified by a Fire Protection Engineer and final testing coordinated with a government Fire Protection Engineer for acceptance.

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GUAM ENVIRONMENTAL SETTING CHAPTER 3

3.1 Geography

Guam is the largest and southernmost island in the Mariana Islands archipelago. Covering an area of 212 square miles, Guam is approximately 30 miles long and has a width varying from approximately 9 miles in the north, 4 miles at its center and 12 miles in the south. The majority of the island is surrounded by coral reefs and consists of two basic geological entities. Central and northern Guam is primarily of raised limestone plateaus as high as 600 feet with steep coastal cliff lines dropping down to the ocean. Southern Guam is made up of volcanic hills with

Figure 1: Map of Guam

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Mount Lamlam being the island’s highest point with an elevation of 1,334 feet. Rivers cut through this terrain with many waterfalls showcasing Guam’s natural beauty.

3.2 Climate

Guam’s climate is warm throughout the year with little seasonal temperature variation.

Temperatures range between the low 70s and mid 80s year round with an average annual precipitation of approximately 90 inches. The average relative humidity ranges between the low 70% to low 80% with June to November being the months with higher relative humidity than the rest of the year. The northeast trade winds are dominant throughout the year and the average wind speed is 9.1 mph according to NOAA 12 year annual averages. Average monthly wind speed ranges from 6.2 to 16.9 mph. The months of January and February are considered the coolest months with less humidity and temperatures dropping to the low 70s at night.

Guam has two seasons, a dry season from January through May and a rainy season from July through November. Guam is situated in an area referred to as “Typhoon Alley” with periodic typhoons that historically have caused great damage to both built and natural environments.

The highest risks of typhoons are in October and November, although they can occur any time of the year. Typhoons can have peak wind speeds over 200 miles per hour. The high level of salt water vapor in the air makes Guam’s climate corrosive in nature. Such environmental elements should be thoroughly considered when developing facilities on Guam.

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DESIGN AND CONSTRUCTION CRITERIA CHAPTER 4

Unless otherwise noted in the project criteria, applicable design and construction criteria shall be the latest adopted version as of the project’s design contract award date or construction contract award date shall be used.

4.1 Applicable Building Codes

Unless specifically stated otherwise, all codes and regulations used shall be the editions adopted and/or amended for use by the Department of Defense thru applicable Unified Facilities Criteria (UFC).

• International Building Code (IBC) –Edition as amended/adopted by UFC 1‐200‐01.

• American Society of Civil Engineers (ASCE 7) – Minimum Design Loads for Buildings and

Other Structures

• American Concrete Institute (ACI 318) ‐ Building Code requirements for Reinforced Concrete

• American Concrete Institute (ACI 530/530.1) – Building Code Requirements and

Specifications for Masonry Structures

• American Institute of Steel Construction (AISC) – Manual of Steel Construction

• Pre‐stressed Concrete Institute (PCI) – PCI Design Handbook

• National Fire Protection Association (NFPA) 70: National Electrical Code

• National Fire Protection Association (NFPA) 72: National Fire Alarm Code

• National Fire Protection Association (NFPA) 101, Life Safety Code

• The Institute of Electrical and Electronics Engineers (IEEE) C2: National Electrical Safety

Code.

4.2 Applicable Unified Facilities Criteria (UFC) and Facilities

Criteria (FC)

UFC and FC documents provide planning, design, construction, sustainment, restoration, and modernization criteria for all Navy and Marine Corps projects and are available on the Whole Building Design Guide (WBDG) website at http://www.wbdg.org/ffc/dod/unified‐facilities‐ criteria‐ufc. Unless specifically stated otherwise, all UFCs and FCs used shall be the latest published editions.

In the event of a conflict between the MDACS and other UFCs/FCs, the more stringent requirement that has typically been proven to work in Guam’s environment shall be utilized.

4.3 Wind Speed Criteria

Protection against typhoons and extreme weather in general is a priority at Navy and Marine Corps facilities on Guam. Typhoon‐driven winds which can be amplified by Guam’s topography will cause deeper‐than‐normal penetration of moist, corrosive marine atmosphere to many

17 | P a g e building materials (metal fasteners, connections, structural components) and assemblies (improperly designed and sealed joints). This alone or in combination with typhoon wind‐borne flying debris can result in outright building rupture, and produce pressures that may compromise the water and air infiltration resistance of the exterior building envelope.

Exterior building envelope, building components and opening protections shall be designed by the DOR (Designer of Record) to withstand design wind pressures and impact resistance in accordance with the IBC and ASCE 7, editions adopted/amended by UFC at time of project’s design contract award date. Design shall also account for any amplification factors as a result of topographical effects or exposure due to reduced surface roughness conditions.

Exterior building component systems and exterior opening protection systems shall be designed, manufactured and installed to withstand the wind load, wind‐borne flying debris impact resistance, and corrosion criteria. These systems include but are not limited to doors, storefronts, windows, glazing, louvers, sun control devices, typhoon shutters, railings, solar photovoltaic panels, solar hot water panels, mechanical and electrical equipment, components and related fasteners.

Building component complete systems (i.e. doors, windows, shutters, etc.) including frame and fasteners shall be designed, manufactured and installed to withstand the wind load criteria.

For Design‐Build projects, wherever ASTM E 1996 is called out, the following additional criteria should be specified by the RFP Preparer for building component systems protecting all exterior openings:

Wind Zone 4

Level of Protection (either "Enhanced Protection" or "Basic Protection")

For DBB projects, wherever ASTM E 1996 is called out, the following additional criteria should be specified by the DOR:

Missile Level (either A, B, C, D, or E) for building component systems protecting all exterior openings at various elevations.

Figure 2: Flying Debris Figure 3: Plywood Projectile

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4.4 Seismic Criteria

Refer to UFC 1‐200‐01 Design: General Building Requirements, UFC 3‐301‐01 Structural Engineering and UFC 3‐310‐04 Seismic Design for Buildings, International Building Code (IBC) and ASCE7: Minimum Design Loads for Buildings and Other Structures. Concrete reinforcement in members resisting earthquake‐induced forces shall meet the tensile and yield strength criteria in accordance with the ACI 318 Seismic Provisions. Where welding of reinforcing bars is required ASTM A 706 should be specified. Designer of Record should be aware that ASTM A 706 reinforcing has a lower critical chloride threshold and various study reports have found that its corrosion rate is higher than for A615 steel.

4.5 Corrosion Prevention and Control Criteria

The combination of heat, humidity and saline atmosphere contribute to significant corrosion issues that can degrade the appearance and cause structural failure to both exterior and interior construction in Guam and the Marianas. Galvanized steel exposed to the exterior and located at the interior of unconditioned spaces behind service and garage doors will rust and fail and shall not be used.

The most corrosion‐resistant metal materials for building components and assemblies shall be used and shall include but not be limited to (in descending order of preference) anodized aluminum, stainless steel, and hot‐dipped galvanized steel.

Anodized aluminum construction materials shall be used to the maximum extent possible for storefronts, doors and frames, windows, louvers, typhoon shutters, railings, and other exterior building components.

Stainless steel shall be used where aluminum does not provide the required performance characteristics. These include but are not limited to fasteners, anchors, miscellaneous metal fabrications, and other exposed building components and assemblies. Specify 18‐8, austenitic stainless steel type 316. If special order cannot be obtained for type 316 stainless steel, the next best corrosive‐resistant stainless steel (e.g. 18‐8 austenitic stainless steel type 304) shall be specified. If the stainless steel components will be welded, specify the low‐carbon content type, usually designated with the letter “L” following the number, e.g. type 316L.

Unless otherwise noted in this document, hot‐dipped galvanized shall only be used at interior conditioned spaces where aluminum or steel coated per UFGS 09 90 00 do not provide the required strength and corrosion performance characteristics. Hot dipped galvanized steel is preferred over electroplating zinc metal spraying or other methods of providing zinc coating to ferrous metals. Exterior chain link fencing shall be hot‐dipped galvanized steel. UV‐resistant vinyl coating of fence shall be considered as an added measure.

Provide protective coatings and cathodic protection for buried metallic fuel or hazardous waste storage tanks and associated pipelines. Alternatively, use non‐metallic materials as allowed by applicable environmental regulations.

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Construction elements shall be designed to minimize the occurrence of corrosion:

Structural steel should be located in protected environments such as within interior air conditioned spaces.

Utilize surfaces and finishes that promote self‐cleaning through rinsing of surfaces by rainfall.

All surfaces of materials shall be sloped and drained to prevent standing water.

Isolate dissimilar materials to prevent galvanic action.

4.6 Sustainability Criteria

Projects must comply with applicable sustainability requirements to include UFC 1‐200‐02, High Performance and Sustainable Building Requirements and NAVFAC Capital Improvements Engineering and Construction Bulletin 2014‐02, NAVFAC Sustainability and Energy Building Requirements which include requirements for all projects, regardless of size or scope. Provide third party certification where required by UFC 1‐200‐02, High Performance and Sustainable Building Requirements. In case of conflict between sustainability requirements, the more stringent requirement applies.

4.7 Accessibility Criteria

Facilities shall be designed and constructed to comply with “Accessibility Requirements for Navy and Marine Corps Facilities” guidance found on the WBDG (Whole Building Design Guide) website, located at http://www.wbdg.org/references/pa_dod_ar.php

4.8 Blind Vendor Facilities

Comply with the Randolph Sheppard Act (RSA) for all projects. RSA establishes a vending facility program to be implemented on specific Federal properties. See OPNAVINST 4535.1B for policy guidance and procedures for Navy projects. Coordinate application of the RSA at a minimum, with the following entities as applicable: a) NAVFAC Marianas, b) Commander Naval Region (COMNAVREG) Guam and c) Guam Division of Vocational Rehabilitation.

4.9 Anti‐Terrorism / Force Protection Criteria

DoD projects shall comply with UFC 4‐010‐01, DoD Minimum Antiterrorism Standards for Buildings and consider the findings of the Comprehensive Study to reduce Stand‐Off Distances for New Facilities in Guam and Commonwealth of the Northern Mariana Islands (FOUO.)

Anti‐Terrorism / Force Protection (AT/FP) compliance can significantly impact site and building layout and design. As a result, AT/FP measures shall be considered early in the design process of all projects. Attention is focused first towards preventative measures as they are often the most cost‐effective, as well as considering how careful design of site and building features can minimize damage in the event of an attack.

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Anti‐terrorism/force protection standards are based on a specific range of assumed, baseline threats, and they serve as a cost‐effective guide in minimizing the risk of mass casualties.

However, UFC 4‐010‐01 stipulates that installation commanders and senior commanders in buildings must protect people under their command. In addition, they are responsible for implementing additional guidance established by geographic combatant commanders.

Therefore, commanders must certify that higher levels of protection than that of the minimum standards are not required.

4.10 Physical Security

DoD projects shall determine, develop, and document total Security Engineering requirements in accordance with UFC 4‐020‐01, DoD Security Engineering Facilities Planning Manual.

Buildings with Secure Rooms may require additional security requirements per ICD 705 series of documents relating to Physical Security Standards for Sensitive Compartmented Information Facilities that has superseded the DCID 6/9. Obtain agreement from appropriate Base Security Office(r) on specific physical security measures tailored to each project.

4.11 Installation Appearance

For Navy base facilities, refer to the Commander, U.S. Naval Forces, Marianas Installation Appearance Plan (COMNAVMAR IAP). For Marine Corps base facilities, refer to Marine Corps Base, Guam Installation Appearance Plan (MCBG IAP), and the Family Housing color schemes.

4.12 Hot Humid Climate Design

a. Guam's hot humid climate (see 3.2) requires special design, knowledge, material selection, mechanical design and construction methods to prevent corrosion problems, structural failure, and moisture problems, that could lead to costly repairs and lost use of facilities while repairs and mitigation are being performed.

b. Particular attention to preventing second vapor barriers that trap moisture hidden within construction systems is essential to mitigating moisture and mold problems. All interior surfaces must breath to prevent trapping moisture. All interior surfaces must be breathable (permeable/greater than 10 perms) or installed to prevent the entrapment of moisture.

Second moisture‐ trapping vapor barriers that do not breathe properly include but are not limited to sheet vinyl flooring, carpet and carpet pads, floor sealers, solid surface shower stalls, impermeable wall covering, and paints. Mirrors, base cabinets, wall cabinets, backsplashes, artwork and other objects mounted to or against the interior face of exterior walls may create a second vapor barrier unless a minimum ¼” air space is provided between the object and the wall.

c. Material selection is key to success in hot humid design. Exterior material coatings and surfaces must resist mold/moisture penetration and be self‐cleaning through rainfall.

Potential exterior and interior corrosion needs to be addressed. Structural failure has

21 | P a g e occurred in Guam's corrosive environment due to improper corrosion protection for framing, connections, etc. Reinforced concrete is the structural material to be used unless otherwise indicated. Exterior metal framing and connections shall use properly selected stainless steel (or equal) corrosion protection. Exterior fasteners shall be stainless steel.

Within interior conditioned spaces exposed steel elements at structural connections must be hot‐dipped galvanized steel. Other interior metal surfaces also must address corrosion.

d. Air‐conditioned spaces need special attention. Proper location of vapor retarder and vapor barriers between the exterior hot humid climate and the HVAC‐conditioned interior spaces is critical. The entire perimeter envelope of the facility must be pressure tested to prevent moisture intrusion. All interior spaces, including soffit areas and storage areas must be positive‐pressured as well as air conditioned. HVAC systems must address proper sizing of the AC equipment for both sensible and latent loads, and must properly control indoor humidity and fresh air criteria. Due to Guam's wind‐driven rains and corrosive environment, facilities shall not have uncontrolled passive venting. Proper Indoor Air Quality is dependent on these measures.

e. Design professionals must have a successful track record in designing for Guam's Hot Humid Climate and have knowledge of Guam's local construction methods to select the appropriate materials and construction components for MCB Guam.

4.13 System Safety Engineering

Projects shall develop System Requirements Hazard Analysis in accordance with MIL‐STD‐882 and NAVFACPACINST 5100.4D in addressing all hazards identified in project planning documents. Risk acceptance shall be in accordance with OPNAVINST 5100.24.

4.14 Industrial Control Systems (ICS) Engineering

DoD projects shall develop comprehensive cybersecurity engineering requirements in accordance with applicable UFCs and the NAVFAC Marianas Public Works Utilities Criteria, and in compliance with NAVFAC Marianas CIO requirements. Coordinate project requirements for all new or modified industrial controls systems (e.g. AMI, SCADA, DDC) with NAVFAC Marianas CIO to obtain requirements related to cybersecurity.

Personnel that are required to conduct ICS operations, maintenance, repair, programming, configuration, installation, and/or development of systems documentation, are required to be US citizens. Requirements for background investigations, non‐disclosure agreements, systems use agreements, system access request forms, system change request forms, and basic network security training, are required be executed by all personnel (as applicable) to the satisfaction of NAVFAC Marianas CIO.

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4.15 Munitions and Explosives of Concern / Explosive Safety

Submission (MEC/ESS)

ESS compliance is mandatory where any ground penetration and construction activity (clearing, digging, grading, excavating, planting, etc.) is to be performed. Applicable reference documents are:

1) Explosive Safety Submission Munitions Response Sites, Guam Construction Support (Current Amendment at time of Contract or Task Order award)

2) CNO ES Exemption E1‐16 for COMJTREG Marianas (Current Series/Amendment at time of Contract or Task Order award)

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DESIGN AND APPEARANCE GUIDELINES CHAPTER 5

This section provides general design and appearance guidelines for uniformity throughout the Installation. Refer to the applicable Base Installation Appearance Plan as appropriate (see 4.11 Installation Appearance for additional requirements.)

5.1 Site and Landscape Design

Site and landscape design shall be in accordance with the applicable Base Installation Appearance Plan (IAP) and the Final Guam Landscaping Guidelines (June 2011) as appropriate.

5.2 Architecture

The primary goal of this architecture guideline is to define a clear and consistent design theme that visually unifies building exteriors throughout the Installation. This goal is achieved by providing a set of uniform design elements that may be applied to the individual designs, such as material types, roof types, color selection and finishes. Uniformity in design throughout an Installation is also encouraged as a means to mitigate the need for future maintenance and repair projects. The design of new facilities should reflect the location, function, and selected Installation theme.

Building systems and finishes shall be designed and constructed in accordance with Section 3 and sections 4.3 (wind), 4.4 (seismic) and 4.5 (corrosion). This architecture guideline provides uniform appearance and additional requirements and recommendations based on Guam’s unique environment.

5.2.1 BUILDING CHARACTER

Building and facilities shall have a uniform “Tropical” appearance and comply with the applicable base Installation Appearance Plan criteria.

The building shall have a climate‐responsive design; the building’s orientation, form and envelope shall take advantage of prevailing wind flows and minimize solar heat gain.

Designer shall consider the following building design elements for protection from heat build‐up, solar radiation and rain.

• Building orientation

• Canopy at building entrances, large enough to protect from sun and heavy rain. For assembly buildings, provide a covered drop‐off area

• Covered walkways between buildings in the same complex

• Insulation and radiant barriers at walls and ceilings

• Reflective high‐albedo roofs on low slope roofs that are not readily visible. Avoid the use of vegetated, green roofs

• Natural daylighting elements

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• High‐performance glazing shaded by deep roof overhangs, shading fins and light shelves.

• Interior window shades

• Typhoon Shutters

5.2.2 EXTERIOR BUILDING ENVELOPE

Strength, durability (corrosion‐resistance), humidity control, the ability to withstand typhoon winds and typhoon flying debris, and seismic resistance are some of the priorities in the design for exterior building envelope systems. Selected construction and finish systems shall reduce life‐cycle costs and simplify maintenance. Reinforced concrete construction shall be used for the structural system unless otherwise indicated. Modular construction such as precast concrete construction systems are encouraged whenever possible. All concrete horizontal and vertical construction joints (concrete, precast concrete, tilt up concrete) shall have a concrete step detail that prevents water from being driven directly through the joint. All concrete vertical joints shall have a lapped or keyed detail that prevents water from being driven directly through the joint. All joints shall be properly prepared and sealed.

The exterior building envelope shall have an insulation system with an R‐value to meet the appropriate criteria and the energy design of the facility. This includes but is not limited to all exterior storefront framing and glazing, doors and frames with or without glazing, and window frames and glazing. There should be no exterior (outboard) insulation on roof;

insulation shall be placed on the interior side. At locations susceptible to moisture, do not use insulation that can retain water such as fiberglass batts as this could lead to potential moisture and mold problems. Also, do not use insulation made from cellulose (wood by‐ products) due to Guam's termite and mold problem.

Incorporate vapor retarders at exterior wall and roofing assemblies.

For family housing, warehouses, fire stations, retail loading areas and other facilities that have unconditioned spaces behind garage doors or roll up doors and conditioned spaces on the opposite side of the unconditioned spaces, there shall be protective interior reinforced concrete or fully grouted reinforced CMU typhoon rated interior walls to protect the occupants in the conditioned spaces..

All non‐conditioned spaces (e.g. Garages, motor pool bays, vehicle repair bays, storage warehouses depending on material to be stored) are considered exterior walls of structures requiring fasteners, hardware, mechanical and electrical accessories all made of stainless steel. Any metal framing shall be hot‐dipped galvanized.

Provide vapor barriers under and around slabs and footings to prevent moisture rising up through the concrete and into interior spaces and the exterior walls leading to moisture problems. See Chapter 6 DESIGN & CONSTRUCTION STANDARDS under A10 FOUNDATIONS, Vapor Barrier for additional information.

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All exterior construction elements in this section and other elements specifically identified shall meet the requirements for Guam’s typhoon winds, wind driven rains, wind borne flying debris, wind topographic effect, corrosion and seismic loads as per applicable UFC criteria and sections 4.3 (wind), 4.4 (seismic) and 4.5 (corrosion) and 4.12 (hot humid climate design) which are critical in successfully addressing Guam's challenging environment.

5.2.2.1 Exterior Wall Systems

Due to their resistance to windborne flying debris, humid climate and corrosive salty environment, the wall system shall be cast‐in‐place concrete or precast concrete unless otherwise noted. Use of EIFS as an option for exterior walls can be included with the following caveats: 1) The EIFS system shall be rated to withstand impact resistance in accordance with ASTM requirements; manufacturer shall provide third party impact resistance testing certificate for compliance. 2) EIFS shall be warrantied against mold development; Manufacturer/DOR/DB‐Contractor shall provide drawing details and specs that specifically address this issue.

Masonry walls should not be considered for the exterior envelope for any significant inhabited or utility buildings (i.e. pump stations, electrical substations, generator buildings, transformer buildings, and utility enclosures for essential buildings).

However, where budget constraints do not allow for concrete, masonry may be cautiously used to reduce project cost. In this case, when used for the exterior envelope, masonry must be fully grouted and shall have a protective silicone enhanced EFS or similar coating to protect the interior from water and moisture infiltration and reinforcement and metal connections from corrosion that may be caused by wind driven rains and the corrosive marine environment. Masonry finish must be regularly maintained; Contractor to submit required maintenance instructions to the CME at project completion.

Restrictions on masonry use do not apply to minor utility enclosures, non‐essential utility buildings (i.e. bus shelters, pavilions, chillers, air‐handling units, and water heating tanks for non‐essential buildings), interior walls, and exterior screen walls. However, at a minimum, masonry exposed to weather shall be weatherproofed with an exterior mildew resistant elastomeric coating in order to prolong the life of the masonry.

Mildew resistant paint/coating system or a fine textured Exterior Finish System (EFS) with integral coloring shall be applied as the exterior finishing material. Silicone or silicone‐enhanced acrylic coating on EFS are suggested as applicable for color retention, wind driven rain resistance, ability to bridge hairline cracks, and permeability. Acrylic exterior coatings shall have silicone additives and EFS shall have silicone enhancement for self‐cleaning during rains to remove dirt that may lead to mold formation.

Consider using glass blocks for daylighting. Glass blocks, particularly the solid glass brick variety resist typhoon damage well and require low maintenance.

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5.2.2.2 Exterior Louvers and Screens

If required, exterior louvers and screens shall be anodized aluminum in a finish color and designed so it is compatible with the exterior building elements. Exterior aluminum louvers with stainless steel mesh shall be designed to meet wind load design criteria in section 4.3. Louvers with stainless steel mesh shall be designed to prevent the infiltration of typhoon wind‐driven rain and pests into the building interior.

Louvers with type 316 stainless steel mesh shall be heavy‐gauged dark bronze anodized finish or as required to comply with the applicable IAP unless otherwise noted. All hardware, brackets, etc., shall be type 316 stainless steel.

If exterior louvers will not stop all water infiltration during a typhoon event, typhoon shutters, concrete hood, or other mitigative design element shall be included.

Figure 4: EFS

Figure 5: Exterior Louvers

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5.2.2.3 Typhoon Shutters

To prevent the infiltration of wind, flying debris, and rain through the exterior structure, provide typhoon shutters at all glazed fenestrations (storefronts, windows, doors with typhoon‐rated vision panels exceeding 100 square inches in area) of buildings and other structures designated as essential facilities within risk category III or IV (according to IBC Table 1604.5). Typhoon shutters shall be designed to meet wind load design criteria in section 4.3. Typhoon shutters shall be anodized aluminum or type 316 stainless steel and constructed to ensure long‐term operability and to prevent insects (e.g. wasps) from nesting within the assembly.

The finish of the entire exposed shutter assembly shall be compatible with the applicable base Installation Appearance Plan or approved housing color scheme.

Stainless steel hardware and fasteners shall be concealed to the maximum extent possible.

Acceptable types of typhoon shutters systems are:

• Vertical coiling (roll‐up) type shutters. Assembly should be recessed into the wall opening flush with wall plane, or have housing sloped at top to discourage bird nesting and to prevent corrosion from standing rain water.

• Side hinged (colonial) shutters: Permanently attach type 316 stainless steel operating hardware to eliminate any removable operating parts that may be misplaced or lost. Side‐hinged typhoon shutters shall only be used at small single‐ story facilities and residential housing projects.

Figure 6: Typhoon Shutter Vertical Coiling

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The use of other types of typhoon shutter systems (accordion, side coiling) must be approved in advance on a case‐by‐case basis, through a waiver request as described in Section 2.3.

5.2.2.4 Railings, Handrails, and Guardrails

Railings and handrails shall be aluminum with anodized finish. Provide type 316 stainless steel railings and handrails where otherwise required. All hardware, anchors, fasteners, gate latches, etc. shall be type 316 stainless steel for corrosion protection and to prevent galvanic action between dissimilar metals.

Where steel rails are used due to funding challenges, galvanized steel shall be used with compatible paint coating. Fiberglass rails may be used for special mission requirements only; fiberglass rails exposed to the exterior shall be provided with 2 coats elastomeric coating for additional UV protection. PVC rails are not allowed. All rail systems shall meet IBC load requirements.

Figure 7: Typhoon Shutter Side Hinged

Figure 8: Typhoon Shutter Other Systems

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5.2.2.5 Sun Control Devices

Sun control devices shall be integrated on the building exteriors to shield direct sunlight on glazing and to reduce cooling load and glare while maximizing daylight to interior spaces. These devices shall be integrated into the building construction so they do not appear as an afterthought addition, do not collect dirt, and allow for easy window cleaning.

Sun control devices may include overhangs, canopies, louvers, solar screens and trellises. Light shelves installed on the exterior (and / or interior) of windows are another type of shading device that increase light penetration into the building interior.

Elements typically include horizontal, vertical, cantilevered and suspended, supports and surfaces. The material for exterior sun control devices may be of concrete or aluminum.

Interior automated sun control devices (e.g. roller shade window treatments) may also be deployed during portions of the day to mitigate heat gain and glare.

5.2.3 BUILDING ENTRANCES / OPENINGS AND COVERED WALKWAYS

Building entrance shall be protected from weather with a canopy, or overhang. Assembly buildings shall be provided with a covered drop‐off area. Functionally related buildings within the same complex shall be provided with connecting covered walkways.

The design of entrance cover and covered walkways shall be of similar style, character and materials as the main building(s); and they shall comply with Section 3, sections 4.3 (wind),

4.4 (seismic) and 4.5 (corrosion.)

The Designer of Record (DOR) shall coordinate the use of floor mats with floor drains and trap primers, entrance vestibules, door and door frame weather seals, or other secondary means to prevent typhoon wind driven rains from entering at the facility exterior entrances.

Figure 9: Sun Control Devices

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All exterior door thresholds and window sills shall have step detail that prevents water from being driven directly under door threshold/window sill. Door threshold shall meet accessibility requirements. Floor drains with trap primer shall be provided at the interior side of entrance doors to collect wind‐driven rain that my infiltrate during typhoons.

All exterior construction elements in this section and other elements specifically identified shall meet the requirements for Guam’s typhoon winds, wind driven rains, wind borne flying debris, wind topographic effect, corrosion and seismic loads as per applicable UFC criteria and sections 4.3 (wind), 4.4 (seismic) and 4.5 (corrosion) and 4.12 (hot humid climate design) which are critical in successfully addressing Guam's challenging environment.

5.2.3.1 Windows

Locate windows to maximize interior daylighting and view opportunities while minimizing thermal heat gain. Provide overhangs, fins, tree shading or other devices to shade or partially shade windows and protect from rain, glare and solar gain. Due to the corrosive environment, exterior windows shall be aluminum with anodized finish unless otherwise required by more stringent DoD Criteria.

Fixed type windows shall prevent the infiltration of undesirable hot, humid outside air, and water leakage during typhoons.

Operable type windows shall be used at habitable air‐conditioned spaces to the maximum extent possible and sized to meet minimum natural ventilation requirements for occupancy during prolonged power outages. Operable windows shall open outwards. Unless required by code for emergency escape and rescue use, provide locks which discourage the opening of windows during HVAC system operation. For child fall prevention, provide window guards at all upper floor operable windows of housing projects in compliance with ASTM F2090‐01a. Window guards shall not interfere with typhoon shutter operation.

All exterior windows shall have a concrete step detail that prevents water from being driven directly under window sills. Install windows in accordance with ASTM E‐2112 to prevent the infiltration of water into wall cavities. Also seal exterior wall openings and interior side furred out walls for water infiltration which may lead to moisture and mold problems.

All exterior and interior window hardware, fasteners, etc. shall be type 316 stainless steel unless not manufactured. This is to provide corrosion protection and to prevent galvanic action between dissimilar metals with the aluminum window frame.

Acceptable types of operable exterior windows systems are:

Sliding.

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Casement. Side hinged (Colonial) at small single‐story facilities and residential projects, or top‐hinged (awning). Awning type shall not be located adjacent to walkways.

Double‐hung (not single‐hung) provide better reach for maintenance.

Refer to section 5.2.3.3 for glazing.

All exterior windows on essential facilities shall be protected by typhoon shutters. Both window and shutter assemblies shall comply with wind speed criteria in Section 4.3. See Chapter 6, Section B2020 Exterior Windows, for more detailed information.

5.2.3.2 Storefronts

Due to Guam’s corrosive marine environment, storefront assemblies shall be aluminum with anodized finish with type 316 stainless steel hardware and fasteners.

• Minimize use of storefront systems on primary gathering and critical designated facilities.

• Refer to section 5.2.3.3 for Glazing.

• Storefronts shall be protected by typhoon shutters that are manually operated or electrically operated with manual backup controls. Provide additional emergency egress as required to allow exiting when shutters are closed over storefront entrances during typhoons. Ensure that the shutter assembly is seamlessly integrated with the building architecture and does not appear as an add‐on.

Figure 10: Window Types

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5.2.3.3 Glazing

Due to Guam’s high wind velocities, potential exposure to flying debris during typhoons and AT/FP compliance, exterior glazing shall be laminated glass. Exterior windows shall include an insulated glazing system (low E outer glazing + air space + interior glazing meeting latest adopted edition of IBC and ASCE7 for hurricane and windborne flying debris). Contractor shall submit 3rd party certification for required impact resistance. At minimum, exterior glazing shall be minimum ¼” thick laminated glass with minimum 0.75mm thick PVB interlayer.

Consider building energy efficiency, occupant comfort, daylighting, acoustic performance, and security when selecting exterior window and glazing systems.

Consider high performance glazing units with low‐emissivity (low‐e) coatings with high visible light transmittance for better daylighting and a low solar heat gain coefficient (SHGC) in accordance the National Fenestration Rating Council and Guam Building Energy Code.

Coordinate glazing tint with applicable IAP, sustainability recommendations and energy requirements. For Navy projects, glazing shall be light bronze tint. Unless otherwise required, unshaded glazing shall be factory tinted; shaded glazing at storefront requiring see‐through visibility may be clear, non‐tinted.

5.2.3.4 Doors

Due to the corrosive environment, all exterior doors and frames shall be aluminum doors with dark bronze anodized finish (at all facilities except residential) and fiberglass doors with simulated wood finish (single family residential only) or galvanized painted steel interior garage fire doors / frames that swing out into the garage where fire resistive requirements dictate. All exterior doors shall meet the wind requirements in sections 4.3 (wind), 4.4 (seismic) and 4.5 (corrosion). All exterior and interior door hardware, fasteners, etc.