19AU9026Q0008_Attachment J_2_2.pdf

OPSR 2 – OBO GUIDE SPECIFICATIONS | FY26

J.2.2 OBO Guide Specifications

FY26

October 1, 2025

UNCLASSIFIED

OBO PROJECT STANDARD REQUIREMENTS (OPSR) | OVERVIEW | FY26

About This Edition The 2026 Edition of the OBO Project Standard Requirements (OPSR) is organized into the following volumes in order of precedence:

• OPSR 1 – OBO Codes*

• OPSR 2 – OBO Guide Specifications

• OPSR 3 – OBO Project Requirements

• OPSR 4 – OBO Space and Adjacencies

• OPSR 5 – OBO Deliverable Requirements

• OPSR 6 – Reserved

• OPSR 7 – OBO Standard Templates

• OPSR 8 – OBO Standard Questionnaires

*OBO Codes (U) (Full minus OBO Telecommunications Code Volume B)

*OBO Telecommunications Code Volume B (SBU)

OPSR Volumes 1-4 make up the OBO Design Standards and are under the purview of the Office of Design and Engineering (OBO/PDCS/DE). The documents contained herein represent all guidance and technical requirements for these standards.

OPSR Volumes 5-8 make up the OBO Deliverable Resources and are under the purview of the Office of Project Development and Coordination (OBO/PDCS/PDC).

Design Principles The mission of the Bureau of Overseas Buildings Operations (OBO) is to provide the most effective facilities for conducting United States diplomacy abroad.

OBO/PDCS/DE develops the design standards and criteria for all overseas State

Department facilities. OBO adopts industry codes and standards and supplements those with unique State Department requirements.

Design Tenets Embassy and consulate buildings should present a welcoming architectural form that represents the United States and acknowledges Host Nation culture with mutual respect via architecture, design, engineering, technology, art, and culture.

The State Department expects to use and operate its buildings for many decades.

This places a greater emphasis on the total cost of ownership long term. Life-cycle cost-effective energy and water efficiency measures should be incorporated to the extent operable and maintainable by local staff. Passive strategies, such as high insulation levels and thermal bridge reductions, should be prioritized over mechanical, high-tech, or proprietary systems with greater maintenance requirements. The concept of whole-building performance must be incorporated into the design to optimize the balance of function, security, safety, energy, resiliency, operability, and maintainability.

2025-2026 Changes The 2026 OBO Design Standards include updates to guidance and technical requirements submitted by diverse OBO subject matter experts. Some highlights include:

• Adoption of the 2024 International Code Council Family of Codes:

o Moved Chapters 9 and 10 requirements from the OBO International Fire

Code to the OBO International Building Code.

o Updated Structural tables in the OBO International Building Code.

o Added Equipment Rooms and Chemical Storage Rooms to the OBO

International Swimming Pool and Spa Code.

o Updated Harvesting Water requirements in the OBO International Zoning

Code.

o Divided the OBO Telecommunications Code into separate Unclassified (U) and Sensitive But Unclassified (SBU) volumes.

• New OBO Guide Specification:

o 329300 Plants.

• Reorganization of the OBO Project Requirements (OPR):

o Reformatted content so every paragraph can be cited.

o Reordered OPR documents to match drawing documentation standards in OPSR 05 (See Crosswalk).

o Consolidated OPR 4-022-01 Compound Access Control and OPR 4-201-01

Support Buildings into OPR 02 General (See Crosswalk).

o Renamed OPR 2-300-01 Utility Services to OPR 08 Civil (See Crosswalk).

o Renamed OPR 2-601-01 Site Design to OPR 09 Landscape (See Crosswalk).

o Developed new OPR 15 Water Feature (See Crosswalk).

• Elimination of the 2025 OPSR Volume 6 – OBO Reference Documents:

o Deleted or revised outdated drawings.

o Incorporated revised drawings into the appropriate OPR as attachments

(See Crosswalk).

• Updates to the Space Requirements Program Modules (SRP-Ms):

o Developed new SRP-M to provide guidance on size, naming, and required components.

o Developed new SRP-Ms for the DT Suite (Diplomatic Technology).

o Created a new FLEX Mission space group that includes all standard SRP-

Ms.

Please reference the CCR Change Log and FY26 Crosswalks (OPR and Drawings) for detailed information concerning incorporated changes. For changes related to SRP-

Ms and adjacency diagrams, reference the Summary of Changes tables in OPSR 4 –

OBO Space and Adjacencies.

Contact designstandards@state.gov for general questions or comments about these standards. If you are under contract on a State Department project, you must go through your Contracting Officer’s Representative for any contract-related questions.

LIMITED CONTENT - REPRODUCTION AND DISTRIBUTION IS AUTHORIZED BUT RESTRICTED

The content included in this version of OBO Standard Project Requirements may be limited based on project scope and sensitivity of the security-related information. Such information is marked

Sensitive but Unclassified (SBU) or Controlled Unclassified Information (CUI) and will not be included in publicly released versions of these documents. The SBU (and higher) information will be available through the Contracting Officer’s Representative after the requestor's need and credentials are authenticated. Unclassified content herein may become SBU/CUI once linked to a specific project, site, or building and must be handled accordingly. Click here for more information and SBU/CUI handling instructions and cover page.

UNCLASSIFIED

UNCLASSIFIED

mailto:designstandards@state.gov https://fam.state.gov/FAM/12FAM/12FAM0540.html

OBO PROJECT STANDARD REQUIREMENTS (OPSR) | CHANGE LOG | FY26 2025-10-01

Document/

Section Chapter Change

General

All documents

N/A Revised formatting of published documents to enhance searchability.

OPSR 1 - OBO Codes

IBC Table of Contents Added chapter 35.

IBC Ch 1 - Scope and Administration Added section 105.2 and renumbered subsequent sections.

IBC Ch 1 - Scope and Administration Revised section 104 to adopt the 2024 ICC code editions.

IBC Ch 1 - Scope and Administration Revised section 105.1.1 regarding requiring permits.

IBC Ch 1 - Scope and Administration Revised section 107.

IBC Ch 4 - Special Detailed Requirements based on Use and Occupancy Deleted section 428.3.5 from Representational Housing

Section.

IBC Ch 4 - Special Detailed Requirements based on Use and Occupancy Renumbered sections to align with IBC.

IBC Ch 5 - General Building Heights and Areas Deleted section 505.

IBC Ch 7 - Fire and Smoke Protection Features Added requirement to 703.7 to state rating.

IBC Ch 9 - Fire Protection and Life Safety Systems Relocated fire alarm requirements from specifications to code.

IBC Ch 9 - Fire Protection and Life Safety Systems Relocated IFC Chapter 9 requirements to IBC Chapter 9.

IBC Ch 11 - Accessibility Revised and added sections to Ch. 11.

2026 OBO Project Standard Requirements (OPSR) Content Changes

Note: Changes listed here are not exhaustive and are provided for user convenience only. Contractors are responsible for compliance with all technical requirements.

CHANGE LOG

Section Chapter Change

IBC Ch 12 - Interior Environment Revised formatting of section 1208 to match code style guide.

IBC Ch 12 - Interior Environment Revised section 1206.5.1.

IBC Ch 15 - Roof Assemblies and Rooftop Structures Revised section 1506.4.

IBC Ch 16 - Structural Design Revised section 1624.

IBC Ch 16 - Structural Design Revised section 1624.2.2.

IBC Ch 24 - Glass and Glazing Revised paragraph 2405.6.

IBC Ch 24 - Glass and Glazing Revised section 1.2.D.

IBC Ch 29 - Plumbing Revised section 2902.1.2.

IBC Ch 29 - Plumbing Revised sections 2902.3.3 and 2902.3.3.1.

IBC Ch 34 - Physical and Technical Security Requirements Revised requirements for manhole cover locks.

IBC Ch 34 - Physical and Technical Security Requirements Added reference to OTC requirements to 3420.5.3.3.

IBC Ch 34 - Physical and Technical Security Requirements Deleted language in 3404.9.8.2 regarding specific types of locks.

IBC Ch 34 - Physical and Technical Security Requirements Deleted section 3403.11.1 and renumbered remaining sections.

IBC Ch 34 - Physical and Technical Security Requirements Renumbered section 3404.8.2.

IBC Ch 34 - Physical and Technical Security Requirements Revised and renamed 3404.9.2 regarding egress route and elevator vestibules.

IBC Ch 34 - Physical and Technical Security Requirements Revised section 3404.11.3.

IBC Ch 34 - Physical and Technical Security Requirements Revised section 3404.5.1.1.

IBC Ch 34 - Physical and Technical Security Requirements Revised section 3404.9.2:

IBC Ch 34 - Physical and Technical Security Requirements Revised section 3420.4.1.3.

IBC Ch 34 - Physical and Technical Security Requirements Revised sections 3404.9.6.3, 3404.9.2.1 & 3404.9.2.2

IBC Appendix N Replicable Buildings Deleted the year reference.

IBC Appendix W Replaced references to Appendix R with Appendix W.

Section Chapter Change

IEBC Ch 10 - Change in Occupancy Revised section 1006 to correct reference to section 304.3.1.

IFC Ch 5 - Fire Service Features Revised to address possible locations for fire command center.

IFC Ch 9 - Fire Protection and Life Safety Systems Clarified section 907.2.2.2 regarding smoke detection.

IFC Ch 9 - Fire Protection and Life Safety Systems Revised section 906.1.2.1.3 item 1.

IFC Ch 10 - Means of Egress Added reference to OBO-ICS IBC and clarified where it differed.

IMC Ch 1 - Scope and Administration Clarified that HHW is prohibited in PCC.

IMC Ch 3 - General Requirements Revised language to address corrosion concerns.

IMC Ch 3 - General Requirements Revised section 312.2.

IMC Ch 3 - General Requirements Revised section 313.6.1.

IMC Ch 4 - Ventilation Clarified section 403.3 regarding circulation spaces.

IMC Ch 4 - Ventilation Revised chapter 4 to coordinate with OBO-ICS IBC chapter

34.

IMC Ch 5 - Exhaust Systems Revised section 504.3.

IMC Ch 5 - Exhaust Systems Revised to prescribe generator exhaust termination locations.

IMC Ch 11 - Refrigeration Clarified PCC chillers do not count as one of the offline chillers.

IMC Ch 12 - Hydronic Piping Revised materials table. See footnotes.

IMC Ch 13 - Fuel Oil Piping and Storage Revised to prevent overflow of fuel in generator room.

IPC Ch 6 - Water Supply and Distribution Added meter requirements for irrigation water to IZC.

IRC Ch 3 - Building Planning Deleted reference to Design Criteria document.

IRC Ch 3 - Building Planning Revised section 310 Residential Group R for consistency.

IRC Ch 6 - Wall Construction Clarified section R609.1.1 to prohibit PVC and PVC-clad windows and door frames.

Section Chapter Change

IRC Table of Contents Rejected new 2024 IRC Appendices NC, NF, NG, NH, and NJ.

ISPSC Ch 4 - Public Swimming Pools Relocated text from section 320 (formerly 319) and incorporated into section 325.

IZC Ch 6 - Commercial and Commercial/Residential Zones Added section 604.3.4.

IZC Ch 6 - Commercial and Commercial/Residential Zones Revised section 604.10.

IZC Ch 8 - General Provisions Added exemption in 812.5.4.3

IZC Ch 8 - General Provisions Added fall protection requirement in 812.2.16.2.

IZC Ch 8 - General Provisions Added list in 818.2 regarding corrosion resistance.

IZC Ch 8 - General Provisions Clarified language 813.3.4.

IZC Ch 8 - General Provisions Clarified section 801.4.2.

IZC Ch 8 - General Provisions Clarified section 813.3.2.2.

IZC Ch 8 - General Provisions Clarified sections 802, 803, and 804 are not adopted.

IZC Ch 8 - General Provisions Deleted hydraulic equipment from 813.8.1.

IZC Ch 8 - General Provisions Deleted section 801.3.3.

IZC Ch 8 - General Provisions Renumbered paragraphs 813.3.3.1 thru 813.3.5.4 with new numbers 813.3.4 thru 813.3.12.4.

IZC Ch 8 - General Provisions Revised paragraphs and titles in subsections from 813 to

816.

IZC Ch 8 - General Provisions Revised section 811.3.1.1.

IZC Ch 8 - General Provisions Revised section 812 for clarity.

IZC Ch 8 - General Provisions Revised sections 813.3.12.3 through 816.13.

IZC Ch 8 - General Provisions Revised site slope requirements.

NEC Ch 2 - Wiring and Protection Revised cable sizes for consistency.

OTC Ch 1 - Scope and Administration Added section 101.1.1.

OTC Ch 1 - Scope and Administration Deleted language from 101.3.1.

OTC Ch 2 - Definitions Added definition "Work Area Outlet (WAO)".

Section Chapter Change

OTC Ch 2 - Definitions Revise definition of Distribution Device (DD).

OTC Ch 3 - General Requirements Deleted section 306.4

OTC Ch 3 - General Requirements Revised section 303.2.1.1.

OTC Ch 3 - General Requirements Revised section 304.1.2.

OTC Ch 3 - General Requirements Revised section 305.1.6.

OTC Ch 3 - General Requirements Revised section 308.1.1.

OTC Ch 3 - General Requirements Revised section 308.4.

OTC Ch 4 - Service Entrance and Site Distribution Deleted OTC section 404.1 #2.

OTC Ch 4 - Service Entrance and Site Distribution Revised section 402.1.

OTC Ch 4 - Service Entrance and Site Distribution Revised section 405.1.

OTC Ch 4 - Service Entrance and Site Distribution Revised section 405.5.6.

OTC Ch 5 - Telecommunications Equipment Spaces Revised section 501.2.

OTC Ch 5 - Telecommunications Equipment Spaces Revised section 502.3.

OTC Ch 5 - Telecommunications Equipment Spaces Revised section 502.5.

OTC Ch 5 - Telecommunications Equipment Spaces Revised section 504.1.1.

OTC Ch 6 - General Telecommunications Cabling for Buildings Revised chapter 6.

OTC Ch 6 - General Telecommunications Cabling for Buildings Revised section 605.2.

OTC Ch 11 - Telecommunications for Residential Buildings Revised chapter 11.

OTC Ch 15 - General Telecommunications for Office Buildings Revised chapter 15.

OTC Ch 15 - General Telecommunications for Office Buildings Revised section 1112.1.

OTC Ch 16 - Telecommunications Equipment Spaces in Office Buildings Revised chapter 16.

OTC Ch 17 - Telecommunications Cabling for Office Buildings Revised chapter 17.

OPSR 2 - Guide Specifications

Division 06 061719 - Cross-Laminated Timber Panels Added sections 1.4.D, 1.7, and 3.6.

Division 06 061800 - Glued-Laminated Construction Added section 1.4.F, 1.8, and 3.5.

Division 08 087135 - Non-Security Door Hardware Revised section 1.2.D - Keying Schedule.

Division 08 087135 - Non-Security Door Hardware Revised sections 2.6.A, 2.6.B.1 and 2.6.C.4.

Section Chapter Change

Division 08 087155 - Security Door Hardware Revised specification 087155-B Defense Attache suite hardware.

Division 08 088855 - Security Glazing Revised specification.

Division 10 104415 - Fire-Protection Specialties Revised specification.

Division 11 114000 - Food Service Equipment Revised section 3.9.

Division 11 115700 - Shop Equipment Revised Basis of Design models.

Division 11 115700 - Shop Equipment Revised section 2.10.F

Division 11 117000 - Medical Equipment Revised specification section 2.14 basis of design for surgical light.

Division 11 118126 - Window Washing and Fall Protection Accessories Renamed specification.

Division 14 142105 - Electric Tractions Elevators Revised language regarding combustible suspension.

Division 21 211305 - Fire Sprinkler Systems Revised language in specification.

Division 21 211305 - Fire Sprinkler Systems Revised reference standard in section 2.4.H.

Division 21 211305 - Fire Sprinkler Systems Revised referenced codes.

Division 22 223230 - Potable Water Treatment Revised language in specification.

Division 23 230905 - Instrumentation and Controls for HVAC Revised language in section 1.2.B.

Division 23 230905 - Instrumentation and Controls for HVAC Revised section 3.2.

Division 23 230905 - Instrumentation and Controls for HVAC Revised specification section 1.2.F.

Division 23 230905 - Instrumentation and Controls for HVAC Revised table 3.13.4 footnote to coordinate terminology.

Division 23 234105 - Air Filtration Modified number of FCU filters to be provided.

Division 23 236427 - Air-Cooled, Rotary-Screw Water Chillers Revised reference standards in 2.11.C.

Division 23 236427 - Air-Cooled, Rotary-Screw Water Chillers Revised specification to require chilled water treatment startup.

Division 23 237315 - Central-Station Air Handling Units Added designer notes to paragraph 2.2.

Division 23 237315 - Central-Station Air Handling Units Added designer notes to specification.

Division 23 237315 - Central-Station Air Handling Units Deleted requirement for davits.

Division 23 237315 - Central-Station Air Handling Units Revised section 2.2.B.

Section Chapter Change

Division 23 237315 - Central-Station Air Handling Units Revised specification regarding submittals.

Division 23 237315 - Central-Station Air Handling Units Revised specification section 1.4.

Division 26 260525 - Grounding and Bonding for Electrical Systems Clarified section 2.1.G regarding bonding requirements.

Division 26 260815 - Field Testing and Inspection Of Electrical Systems Added sub-paragraph 3.1.C.

Division 26 262325 - Power Sequence Of Operation Added paragraph 1.7.

Division 26 262325 - Power Sequence Of Operation Added sub-paragraph 1.6.B.

Division 26 262725 - Wiring Devices Revised requirements section 2.2.B.1.

Division 26 263214 - Engine Generators Deleted section 1.2.A.2 to defer to generator manufacturer.

Division 26 263214 - Engine Generators Revised reference standards in sections 1.2.A and 2.8.B.

Division 26 263214 - Engine Generators Revised section 2.8.B ASTM references.

Division 26 263552 - Low-Voltage Automatic Voltage Regulators Added designers note to clarify use.

Division 27 270508 - Common Work Results for Telecommunications Revised specification.

Division 27 270526 - Grounding and Bonding for Communications Systems Revised specification.

Division 27 270528 - Surface-Mounted Raceways for Communication Systems Revised section 2.2.C.

Division 27 270553 - Identification for Communications Systems Revised specification.

Division 27 270645 - Schedules for Audiovisual Systems Revised specification.

Division 27 271113 - Communications Entrance Protection Revised specification.

Division 27 271116 - Communications Cabinets and Frames Revised specification.

Division 27 271119 - Communications Termination Blocks and Patch Panels Revised specification.

Division 27 271123 - Communications Cable Management and Ladder Rack Revised specification.

Division 27 271305 - Communications Backbone Cabling Revised specification.

Division 27 271505 - Communications Horizontal Cabling Revised language in section 2.2-A-2.

Division 27 271505 - Communications Horizontal Cabling Revised specification.

Division 27 271543 - Communications Faceplates and Connectors Revised specification.

Division 27 272129 - Data Communication Switches and Power Supplies Revised specification.

Division 27 274100 - Audiovisual Systems General Requirements Revised specification.

Section Chapter Change

Division 27 274114 - Architecturally-Integrated Audiovisual Elements Revised specification.

Division 27 274117 - Projection Screens and Projector Lifts Revised specification.

Division 27 275105 - Audio Systems for Consular Services Revised specification.

Division 27 275118 - Sound Masking System Revised language.

Division 27 275118 - Sound Masking System Revised specification.

Division 27 275405 - Consular Queue Management System Infrastructure and

Displays

Revised specification.

Division 28 284626 - Addressable Fire Alarm Systems Revised referenced codes.

Division 32 323305 - Site Furnishings Added new specification.

Division 33 337105 - Underground Ducts and Raceways Revised section 2.5.

OPSR 3 - OBO Project Requirements

All OPRs N/A Renumbered and renamed OPRs in a logical manner.

N/A OPR 02 General Added new specification.

N/A OPR 02 General Revised section 1208.6.6 regarding maximum guard both height.

N/A OPR 02 General Revised section 2-4.5.1.

N/A OPR 02 General Revised to provide 3m clearance.

N/A OPR 04 Physical Security Incorporated updated Red Book.

N/A OPR 04 Physical Security Incorporated updated Red Book.

N/A OPR 09 Landscape (Formerly Site Design) Added new specification.

N/A OPR 09 Landscape (Formerly Site Design) Added new specification.

N/A OPR 09 Landscape (Formerly Site Design) Added new specification.

N/A OPR 09 Landscape (Formerly Site Design) Revised OPR regarding pool deck material.

N/A OPR 09 Landscape (Formerly Site Design) Revised OPR.

N/A OPR 09 Landscape (Formerly Site Design) Revised section 2-7.2.9.1.

N/A OPR 10 Architecture Renamed section 2-1.2.3.

Section Chapter Change

N/A OPR 10 Architecture Revised language to include bumper guards in service corridors.

N/A OPR 10 Architecture Revised OPR regarding exterior finish materials.

N/A OPR 10 Architecture Revised OPR regarding finish flooring installation.

N/A OPR 10 Architecture Revised requirements regarding glass railings.

N/A OPR 10 Architecture Revised section 2-1.1.1-5 regarding fire pump room access.

N/A OPR 10 Architecture Revised section 2-1.2.3.3 regarding roof hatches.

N/A OPR 10 Architecture Revised section 3.1.1.1 regarding vision panels.

N/A OPR 15 Water Feature Added new OPR.

N/A OPR 18 Mechanical Revised OPR regarding equipment replacement.

N/A OPR 18 Mechanical Revised section 2.1.

N/A OPR 18 Mechanical Revised section 2-1.3 regarding filter trays.

N/A OPR 18 Mechanical Revised section 2-1.4.3 regarding area drains.

N/A OPR 20 Fire Protection Added sections 2-2 and 2-3.

N/A OPR 26 Telecommunications and Audio Visual Revised language in section 3.3.1.1 C.

N/A OPR 26 Telecommunications and Audio Visual Revised OPR.

N/A OPR 31 Specifications Criteria Added to Attachment D Standard Extra Material (Spare

Parts).

N/A OPR 31 Specifications Criteria Aligned content with OBO Deliverable Requirements.

J.2.2 OBO PROJECT STANDARD REQUIREMENTS (OPSR) 2 | FY26

01 Organization of Specification Divisions Microsoft Word versions of the OBO Guide Specifications can be obtained for use on specific projects by contacting the assigned COR. See OPR 31 Specifications Criteria for additional technical requirements.

Division 01 – General Conditions

OBO Division 01 standard specifications sections are produced by the Office of Construction Management (OBO/CFSM/CM) and provided on a project-specific basis. Contract A/E teams can obtain them through their designated

COR.

Division 02 – Existing Conditions

No OBO Guide Specification sections in this Division

Division 03 – Concrete

• 033000 Cast-in-Place Concrete 2023-10-01

Division 04 – Masonry

No OBO Guide Specification sections in this Division

Division 05 – Metals

• 055005 Metal Fabrications 2024-10-01

• 057005 Decorative Metal 2023-10-01

• 057305 Decorative Metal Railings 2025-10-01

Division 06 – Wood, Plastics & Composites

• 061719 Cross-Laminated Timber Panels 2025-10-01

• 061800 Glue-Laminated Construction 2025-10-01

• 062025 Interior Finish Carpentry 2023-10-01

• 064023 Interior Architectural Woodwork 2023-10-01

Division 07 – Thermal & Moisture Protection

• 074115 Standing-Seam Metal Roof Panels 2023-10-01

• 074215 Insulated Metal Wall Panels 2023-10-01

• 075558 Fluid-Applied Protected Membrane Roofing 2023-10-01

• 076205 Sheet Metal Flashing and Trim 2023-10-01

• 077234 Forced-Entry/Ballistic-Resistant (BR) Roof Hatches 2023-10-01

Division 08 – Openings

• 080001 Blast Requirements 2023-10-01

• 081115 Hollow Metal Doors and Frames 2023-10-01

• 081415 Flush Wood Doors 2023-10-01

• 083115 Access Doors and Frames 2023-10-01

• 083322 Overhead Forced-Entry (FE) Coiling Doors 2023-10-01

• 083454 FE / BR Door Assemblies 2025-10-01

• 083459 Vault Doors and Accessories 2025-10-01

• 084414 Structurally-Framed Security Curtain Wall System 2024-10-01

• 085651 Aluminum Security Windows 2024-10-01

• 085652 Aluminum Security Teller Windows 2025-10-01

• 087135 Non-Security Door Hardware 2024-10-01

• 087155 Security Door Hardware 2025-10-01

• 088855 Security Glazing 2025-10-01

• 089117 Security Louvers 2023-10-01

Division 09 – Finishes

• 092400 Cement Plastering 2023-10-01

• 092900 Gypsum Board 2023-10-01

• 093013 Ceramic Tiling 2023-10-01

• 095113 Acoustical Panel Ceiling 2023-10-01

• 095423 Linear Metal Ceiling 2023-10-01

• 096340 Stone Flooring 2023-10-01

• 096400 Wood Flooring 2023-10-01

• 096513 Resilient Base and Accessories 2023-10-01

• 096536 Static-Control Resilient Floor Coverings 2023-10-01

• 096623 Resinous Matrix Terrazzo Flooring 2023-10-01

• 096800 Carpeting 2023-10-01

• 097200 Wall Coverings 2023-10-01

• 097513 Stone Wall Facing 2023-10-01

• 098433 Sound-Absorbing Wall Units 2023-10-01

• 099601 High-Performance Coatings for General Usage 2024-10-01

• 099602 High-Performance FE/BR Coatings 2024-10-01

Division 10 – Specialties

• 101100 Visual Display Units 2023-10-01

• 101415 Post and Panel Pylon Exterior Signage 2023-10-01

• 101425 Interior Panel Signage 2023-10-01

• 102113 Toilet Compartments 2023-10-01

• 104415 Fire Protection Specialties 2025-10-01

• 105110 Cell Phone Locker 2024-10-01

• 105613 Metal Storage Shelves 2023-10-01

• 105640 Safety Storage Cabinets 2023-10-01

Division 11 – Equipment

• 111126 Vehicle Washing Equipment 2023-10-01

• 111305 Load Dock Equipment 2023-10-01

• 112173 Commercial Laundry Equipment 2023-10-01

• 113013 Residential Appliances 2024-10-01

• 114000 Foodservice Equipment 2025-10-01

• 115355 Class I Biological Safety Cabinets 2023-10-01

• 115700 Shop Equipment 2025-10-01

• 117000 Medical Equipment 2025-10-01

• 118126 Façade Maintenance and Fall Protection Accessories 2025-10-01

Division 12 – Furnishings

• 122413 Roller Window Shades 2023-10-01

• 124816 Entrance Floor Grilles 2023-10-01

• 125005 GFE Furniture Installation 10-16-2024

• 125705 Work Benches 2025-10-01

Division 13 – Special Construction

• 133435 Mail Screening Facilities 2023-10-01

Division 14 – Conveying Equipment

• 142105 Electric Traction Elevators 2025-10-01

• 144500 Vehicle Lifts 2023-10-01

Divisions 15 – 20

No OBO Guide Specification sections in these Divisions

Division 21 – Fire Suppression

• 211305 Fire Sprinkler Systems 2025-10-01

• 213115 Fire Pump Assemblies 2025-10-01

Division 22 – Plumbing

• 223230 Potable Water Treatment 2025-10-01

• 224105 Residential Plumbing Fixtures 2023-10-01

• 224215 Commercial Plumbing Fixtures 2025-10-01

• 224500 Emergency Plumbing Fixtures 2024-10-01

Division 23 – Heating Ventilation & Air Conditioning

• 230593 Testing, Adjusting, and Balancing for HVAC 2024-10-01

• 230719 HVAC Piping Insulation 2024-10-01

• 230805 Commissioning of HVAC 2023-10-01

• 230905 Instrumentation and Controls for HVAC 2025-10-01

• 234105 Air Filtration 2025-10-01

• 236422 Heat Recovery Chillers & Simult. Heat-Cool Chillers 2024-10-01

• 236427 Air-Cooled Rotary-Screw Water Chillers 2025-10-01

• 236434 Modular Air-Cooled Water Chillers 2025-10-01

• 237315 Central-Station Air-Handling Units 2025-10-01

Divisions 24 – 25

No OBO Guide Specification sections in these Divisions

Division 26 – Electrical

• 260508 Common Work Results for Electrical, Communication & Electronic Safety 2023-10-01

• 260518 Low-Voltage Electrical Power Conductors and Cables 2025-10-01

• 260525 Grounding and Bonding for Electrical Systems 2025-10-01

• 260573 Overcurrent Protective Device Coordination Study 2023-10-01

• 260815 Field Testing and Inspection of Electrical Systems 2025-10-01

• 260915 Electrical Power Monitoring 2023-10-01

• 260924 Lighting Control Devices 2023-10-01

• 260934 Centralized Dimming Controls 2023-10-01

• 261214 Medium-Voltage Transformers 2023-10-01

• 262214 Low-Voltage Transformers 2023-10-01

• 262300 Low-Voltage Switchgear 2023-10-01

• 262313 Paralleling Switchgear 2023-10-01

• 262315 Double-Ended Switchgear 2023-10-01

• 262325 Power Sequence of Operation 2025-10-01

• 262412 Switchboards 2023-10-01

• 262417 Panelboards 2025-10-01

• 262500 Enclosed Bus Assemblies 2023-10-01

• 262725 Wiring Devices 2025-10-01

• 263105 Solar Photovoltaic Systems 2023-10-01

• 263214 Engine Generators 2025-10-01

• 263237 Resistive Load Banks 2023-10-01

• 263313.11 Residential Energy Storage Systems 2024-10-01

• 263313.12 Energy Storage Systems (50 kWh UP TO 600 kWh) 2024-10-01

• 263313.13 Energy Storage Systems (OVER 600 kWh) 2024-10-01

• 263354 UPS for Telecommunications 2025-10-01

• 263535 Power Factor Correction Equipment 2023-10-01

• 263552 Low-Voltage Automatic Voltage Regulators 2023-10-01

• 263554 Medium-Voltage Automatic Voltage Regulators 2023-10-01

• 263600 Transfer Switches 2025-10-01

• 264115 Lightning Protection 2023-10-01

• 264315 Surge Protective Devices 2023-10-01

• 265105 Interior Lighting 2023-10-01

• 265554 Undercarriage Vehicle Inspection Lighting 2023-10-01

• 265600 Exterior Lighting 2023-10-01

Division 27 – Communications (Comms)

• 270508 Common Work Results for Telecommunications 2025-10-01

• 270526 Grounding and Bonding for Comms Systems 2023-10-01

• 270528 Surface-Mounted Raceways for Comms Systems 2023-10-01

• 270553 Identification for Communications Systems 2025-10-01

• 270645 Schedules for Audiovisual Systems 2025-10-01

• 271113 Communications Entrance Protection 2025-10-01

• 271116 Communications Cabinets and Frames 2025-10-01

• 271119 Comms Termination Blocks and Patch Panels 2025-10-01

• 271123 Comms Cable Management and Ladder Racks 2024-10-01

• 271305 Communications Backbone Cabling 2025-10-01

• 271505 Communications Horizontal Cabling 2025-10-01

• 271543 Communications Faceplates and Connectors 2025-10-01

• 272129 Data Communications Switches and Power Supplies 2025-10-01

• 274100 Audiovisual Systems General Requirements 2025-10-01

• 274114 Architecturally-Integrated Audiovisual Elements 2025-10-01

• 274117 Projection Screens for Consular Services 2025-10-01

• 275105 Audio Systems for Consular Services 2025-10-01

• 275118 Sound Masking System 2025-10-01

• 275124 General-Use Teller Window Intercoms Systems 2025-10-01

• 275405 Consular Queue Mgmt Sys Infrastructure & Displays 2025-10-01

Division 28 – Electronic Safety & Security

• 280508 Common Work Results for Technical Security (TSS) 2025-10-01

• 281005 Technical Security Access Systems 2023-10-01

• 281805 Technical Security Access Equipment 2025-10-01

• 282305 Security Video System 2025-10-01

• 283105 Technical Security Intrusion Detection Systems 2024-10-01

• 283325 TSS Intercommunications Systems 2025-10-01

• 283337 Technical Security Duress Systems 2023-10-01

• 284626 Addressable Fire Alarm Systems 2025-10-01

• 284705 Mass Notification Systems 2025-10-01

• 284800 Areas of Refuge Emergency Comms Systems 2023-10-01

• 285115 Security Management System Enterprise (SMSe) 2023-10-01

Divisions 29 – 30

No OBO Guide Specification sections in these Divisions

Division 31 – Earthwork

• 311005 Site Clearing 2023-10-01

• 311305 Temporary Trees and Plant Protection 2025-10-01

• 312000 Earth Moving 2025-10-01

• 312319 Dewatering 2023-10-01

• 312507 Temporary Erosion and Sedimentation Control 2023-10-01

• 313117 Termite Control 2023-10-01

• 315000 Excavation Support and Protection 2023-10-01

• 316213 Concrete Piles 2023-10-01

• 316216 Steel Piles 2023-10-01

• 316219 Timber Piles 2023-10-01

• 316223 Composite Piles 2023-10-01

• 316316 Auger Cast Grout Piles 2023-10-01

• 316329 Drilled Concrete Piers and Shafts 2023-10-01

Division 32 – Exterior Improvements

• 323118 Decorative Metal Fences and Gates 2025-10-01

• 323305 Site Furnishings 2023-10-01

• 324003 Anti-Climb Gate Systems 2024-10-01

• 324004 Anti-Ram Gate Systems 2025-10-01

• 324007 Active Roadway Barrier Systems 2025-10-01

• 324008 Rising Bollard Barricade Systems 2025-10-01

• 324009 Crash-Rated Drop Arm Systems 2025-10-01

• 329300 PlantsNew 2025-10-01

Division 33 – Utilities

• 331117 Water Supply Wells 2023-10-01

• 331414 Fire Service Mains and Appurtenances 2025-10-01

• 331416 Site Water Distribution Piping 2023-10-01

• 333700 Wastewater Treatment Plant 2023-10-01

• 335005 Underground Fuel Storage Tanks and Distribution 2024-10-01

• 335217 Motor Vehicle Fuel Dispensing 2023-10-01

• 337105 Underground Ducts and Raceways 2024-10-01

Divisions 34 – 50

No OBO Guide Specification sections in Divisions 34 or beyond

U. S. DEPARTMENT OF STATE 2023-10-01

OVERSEAS BUILDINGS OPERATIONS

GUIDE SPECIFICATIONS

CAST-IN-PLACE CONCRETE 033000 - 1

SECTION 033000 - CAST-IN-PLACE CONCRETE

PART 1 - GENERAL

1.1 SUMMARY

A. Section includes cast-in-place concrete, including formwork, reinforcement, concrete materials, concrete mixture performance, qualification testing, production testing, placement procedures, and finishes, for the following:

1. Footings and Foundations.

2. Foundation walls.

3. Slabs-on-grade.

4. Suspended slabs.

5. Concrete toppings.

6. Building frame members.

7. Building walls.

8. Equipment pads and bases.

9. Topping slabs.

10. Site perimeter walls, concrete filled bollards, and site structures.

B. Related Sections:

1. Division 31 Section on earth moving for drainage fill under slabs-on-grade.

2. Division 31 Section “Termite Control” for termiticides applied to slabs-on-grade, basement slabs, and foundations.

3. [Division 31 Section on drilled concrete piers and shafts for drilled pier foundations.]

4. Division 32 Section on concrete paving for concrete pavement and walks.

5. [Division 32 Section on decorative cement concrete pavement.]

1.2 DEFINITIONS

A. Cementitious Materials: Portland cement alone or in combination with one or more of the following: Blended hydraulic cement, fly ash, metakaolin and other pozzolans, slag cement, and silica fume; subject to compliance with requirements.

B. Concrete Class: The performance requirements for structural concrete. Unless otherwise specified by Project Director/COR, the specification requirements shall be defined by the Engineer of Record. All concrete to be placed in the project shall have a Concrete Class designation. Exposure conditions outlined in ACI 318 shall be included in the Concrete Class definition.

C. Independent Quality Assurance Inspector: An independent third-party quality assurance firm retained by Contractor to serve inspection, oversight, and specification compliance tasks for the project including for concrete materials, concrete mixtures, reinforcing steel, and others as applicable.

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CAST-IN-PLACE CONCRETE 033000 - 2

D. Mass Concrete: A concrete element shall be treated as mass concrete when any of the following is true:

1. Concrete element is indicated to be mass concrete on the project drawings.

2. Minimum dimension of concrete element exceeds 1200 mm.

3. Concrete element is constructed in two or more smaller adjoining concrete placements to avoid treatment as mass concrete, unless a minimum period of 3 days is provided between smaller adjoining placements.

E. Specified Concrete Performance: Specified limiting value of a test result that indicates acceptable material quality or workmanship. Quality acceptance limits are based on design criteria that is provided as not-to-exceed values where values lower than specified indicate acceptable material (i.e., drying shrinkage); or as lower-bound limits where larger values indicate acceptable material ( i.e., such as compressive strength).

F. Service Life: Government's stated expectation for number of years that structure will function without needing major concrete rehabilitation. Service life is defined as number of years before major restoration is necessary given minimal maintenance to structure during its life in accordance with OBO Design Code. Major restoration is defined as extensive areas that require extensive repairs using jack hammer or other destructive means to prepare concrete for rehabilitation. Unless otherwise specified, Service life is further defined as summation of corrosion initiation period (Ti) and corrosion propagation period (Tp) for given concrete system.

G. Supplemental Corrosion Protection: Includes (but not limited to) fusion-bonded epoxy-coated reinforcing steel, galvanized reinforcing steel, stainless reinforcing steel, corrosion inhibitors, barrier coatings to concrete surface, and cathodic protection.

H. Supplementary Cementitious Materials (SCM): Cementitious materials other than portland cement or blended cements that include fly ash, and granulated blast-furnace slag, when used in such proportions to replace portland cement that result in considerable improvement to durability and in some cases a reduction in cost.

I. Temperature Difference: Difference in temperature, at any point in time, between hottest portion of concrete placement and any point 50 to 75 mm into concrete on surface of concrete placement.

J. Test Section: Slab or wall separate from main structure and constructed prior to main construction as all-inclusive demonstration of methods and materials. Adequacy of the Test Section must be approved by Contracting Officer prior to construction of the project.

K. Thermal Control Period: Period of time when temperatures and temperature differences within concrete placement are required to be controlled. This period starts at completion of concrete placement and ends when hottest portion of placement cools such that removal of insulation will not cause excessive temperature difference in concrete placement.

L. Thermal Controls: Measures used to control temperatures and temperature differences within mass concrete placement.

GUIDE SPECIFICATIONS

CAST-IN-PLACE CONCRETE 033000 - 3

M. Thermal Control Plan: Submittal from the Contractor to the OBO Project Director/COR that documents how temperatures and temperature differences will be controlled in mass concrete placement. Thermal control plan shall conform to minimum requirements of this Section.

N. Tolerance: Margin of deviation for each of specified concrete performance. Concrete material or workmanship performance found to be outside of Tolerance will result in Non-Compliance Report.

O. Water/Cementitious Materials Ratio (w/cm): Ratio by weight of water to cementitious materials.

1.3 PREINSTALLATION MEETINGS

A. Preinstallation Conference: Conduct conference at the Project site in accordance with requirements of Division 01 and the following:

1. Conduct conference at least 35 days prior to submitting concrete design mixtures to review detailed requirements for preparing concrete design mixtures and to determine procedures for satisfactory concrete operations. Review requirements for submittals, status of coordinating work, and availability of materials. Establish preliminary work progress schedule and procedures for materials inspection, testing, and certifications. Coordinate timing of conference with the Project Director/COR to facilitate their attendance.

2. Required Attendees: Require representatives of each entity directly concerned with cast-in-place concrete to attend conference, including, but not limited to, the following:

a. Contractor’s superintendent.

b. Agency responsible for design concrete mixtures.

c. Agency responsible for independent testing.

d. Ready-mix concrete producer.

e. Primary admixture manufacturer.

f. Concrete subcontractor.

g. Formwork subcontractor.

h. Steel reinforcing installer subcontractor.

i. Quality Control Manager.

j. Project Director/COR.

k. Engineer of Record.

l. Architect of Record.

m. Bridging Engineer and Bridging Architect.

3. Agenda:

a. Special inspection and testing and inspecting agency procedures for field quality control.

b. Concrete finishes and finishing.

c. Cold- and hot-weather concreting procedures.

d. Curing procedures.

e. Construction contraction and isolation joints, and joint-filler strips.

f. Semi-rigid joint fillers.

GUIDE SPECIFICATIONS

CAST-IN-PLACE CONCRETE 033000 - 4

g. Forms and form removal limitations.

h. Shoring and reshoring procedures.

i. Vapor-retarder installation.

j. Anchor rod and anchorage device installation tolerances.

k. Steel reinforcement installation.

l. Floor and slab flatness and levelness measurement.

m. Concrete repair procedures.

n. Concrete protection.

1.4 ACTION SUBMITTALS

A. Product Data: For each type of product indicated.

B. LEED Submittals:

1. Product Data for Credit MR 4.1 and Credit MR 4.2: For products having recycled content, documentation indicating percentages by weight of post-consumer and pre-consumer recycled content.

a. Include statement indicating costs for each product having recycled content.

2. Design Mixtures for Credit ID 1.1: For each concrete mixture containing fly ash as replacement for portland cement or other portland cement replacements, and for equivalent concrete mixtures that do not contain portland cement replacements.

C. Design Mixtures: Submit for each class of concrete field or laboratory test records used to document that proposed mixture will achieve the required average compressive strength and other specified requirements in Part 2 Articles on REPAIR MATERIALS, CONCRETE MIXTURES

GENERAL, CONCRETE MIXTURES BUILDING ELEMENTS, CONCRETE MIXTURES

CLASSES, and CONCRETE MIXING. Submit alternate design mixtures when characteristics of materials, Project conditions, weather, test results, or other circumstances warrant adjustments.

Use form in Attachment A to this Section.

D. Shop Drawings:

1. Steel Reinforcement Shop Drawings: Placing drawings that detail fabrication, bending, and placement. Include bar sizes, lengths, material, grade, bar schedules, stirrup spacing, bent bar diagrams, bar arrangement, splices and laps, mechanical connections, tie spacing, hoop spacing, and supports for concrete reinforcement.

2. Formwork Shop Drawings: Prepared by or under supervision of qualified professional engineer detailing fabrication, assembly, and support of formwork. Show location and detail construction joints for concrete work. Show form construction including jointing, special form joints and reveals, location and pattern of form ties placement, and other items that affect exposed concrete visually.

a. Shoring and Reshoring: Indicate proposed schedule and sequence of stripping formwork, shoring removal, and reshoring installation and removal.

GUIDE SPECIFICATIONS

CAST-IN-PLACE CONCRETE 033000 - 5

b. Review by the Project Director/COR is for general applications and features only.

Formwork design and shoring sequence for structural stability and efficiency is Contractor’s responsibility.

3. Construction Joint Layout Drawings: Indicate proposed construction joints required to construct structure.

a. Location of construction joints is subject to approval of the Project Director/COR.

E. Samples: For waterstops.

F. Concrete Schedule: For each location of each Class of concrete indicated in "Concrete Mixtures" Article, including the following:

1. Concrete Class designation.

2. Location within Project.

3. Exposure Class designation.

4. Formed Surface Finish designation and final finish.

5. Final finish for floors.

6. Curing process.

7. Floor treatment if any.

G. Concrete Placement Plan: Submit written report to the Project Director/COR describing proposed concrete placement program including but not limited to: transportation and placement of concrete, means and methods of consolidation, formwork and reinforcing steel installation, concrete placement sequencing and duration, means and methods to place concrete including personnel, equipment, and onsite testing agency.

1. Placement plan shall include:

a. Labor requirements.

b. Quality control requirements.

c. Placement limits.

d. Total concrete quantity.

e. Rate of concrete delivery and placement.

f. Placement plan shall include provisions for backup batching plant, pumps, vibrators, and other equipment in the event of plant or equipment failure, or unforeseen weather conditions.

g. Placement plan shall provide contingency procedures so that placement can be successfully accomplished in the event of permanent failure of a concrete pump.

h. Technical literature for equipment and methods proposed for vibrating and compacting concrete.

1) Include technical literature describing equipment including vibrator diameter, length, frequency, amplitude, centrifugal force, and manufacturer's description of radius of influence under load.

2) Where flat work is to be cast, provide similar information relative to proposed compacting screed or other method to ensure dense placement.

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CAST-IN-PLACE CONCRETE 033000 - 6

2. At least 14 days prior to each concrete placement, submit a plan for mixing, placing, finishing and curing concrete including the following:

a. Methods of conveying concrete. For pumped placements of foundation mat and roof slab, minimum of two concrete pumps shall be active with additional pump present as backup. For pumped placements of foundation walls, minimum of one concrete pump shall be active with additional pump present as backup.

b. Handling, placing, compaction, and finishing methods and equipment. Minimum of two internal vibrators shall be active for each active concrete pump with at least one backup vibrator available per pump.

c. Concrete placement. Indicate starting point of placement, concrete delivery and placement rate, lift thicknesses and direction of advancement of concrete placement.

d. Temperature control and monitoring methods, referencing TCP.

e. Curing and protection methods.

f. Target strength, slump, and proposed mixture design.

g. Sequence and times for concrete pours.

h. Construction joint locations and methods for preparation of construction joints.

i. Anticipated timing, sequences, and procedures for formwork and shoring removal.

H. Concrete Qualification Plan:

1. Submit written reports to the Project Director/COR of each qualified concrete mixture demonstrating compliance with the project specifications. Report shall be prepared and sealed by professional engineer for each concrete mixture at least 15 days prior to start of work. Do not begin concrete production until the Project Director/COR has approved qualified concrete mixture materials and proportions.

2. Indicate specific materials to be utilized in each concrete mixture, including aggregates, admixtures and other materials, and amounts of mixing water to be withheld for later addition at the Project site.

I. Concrete Quality Assurance Plan: Submit written report to the Project Director/COR of proposed concrete quality assurance process to be conducted by the Contractor and sub-contractors such as Concrete Contractor, Quality Control Laboratory Testing Firm, Concrete Supplier, or others as applicable. Do not begin concrete production until the Project Director/COR has approved Concrete Assurance Plan. See Attachment E, “Quality Assurance Plan Example.”

J. Thermal Control Plan: Thermal Control Plan is required for each element or group of mass concrete placements and shall be based on guidelines of ACI 207.2R. It shall demonstrate that proposed concrete mixture and methods do not result in placed concrete that exceeds specified temperature limitations. Thermal Control Plan shall be submitted to the Project Director/COR at least 14 days prior to concrete placement for review and approval. Submittal shall contain the following information:

1. Approved concrete mixture design.

2. Expected conditions at time of placement and calculated temperature rise of concrete and maximum temperature in concrete placement based on test or other data acceptable to OBO Project Director/COR. Maximum temperature limit shall be 70 deg C and maximum

GUIDE SPECIFICATIONS

CAST-IN-PLACE CONCRETE 033000 - 7

temperature difference shall be 20 deg C. If maximum temperature difference is exceeded, Performance-Based Temperature Difference Limit may be proposed.

a. If Performance-Based Temperature Difference Limit other than 20 deg C is proposed, submit supporting calculations and all supporting test data for concrete mixture design used to develop temperature difference limit. Alternative temperature difference limit calculations shall clearly describe and demonstrate how alternative temperature difference limit will be implemented and used. Calculations and supplementary test data shall be submitted at a minimum of 14 calendar days for review and comment on this submittal. 20 deg C temperature difference limit shall be used until acceptance of alternative limit is provided.

3. Thermal Control Plan shall define concrete placement conditions and shall indicate anticipated ambient temperature, maximum concrete placement temperature, concrete constituent material mass and temperature, curing method, temperature monitoring and control measures.

4. Thermal Control Plan shall describe placing, monitoring of temperature, curing and thermal control procedures that will be used following concrete placement, so maximum temperature and maximum temperature differential between interior of section and outside surface of section do not exceed specified limits.

5. Proposed construction practices to maintain concrete temperature and temperature differentials within the specified limits.

6. Description of materials and procedures for insulation of mass concrete placements during thermal control.

7. Description of procedures, location, and equipment that will be used to record temperatures and temperature differences.

8. Design of cooling system, if necessary, consisting of non-corrosive piping to be embedded in mass concrete.

9. Description of measures to address and reduce excessive temperatures and temperature differences, if they occur.

10. Description of expected duration of thermal controls, and description of how thermal control period will be determined to be complete.

11. Description of curing procedures, including materials and methods, and curing duration.

12. Description of formwork removal procedures to ensure temperature difference at temporarily exposed surface will not exceed temperature difference limit, and how curing will be maintained.

13. Statement that if concrete design mixture, forms, curing method, or any other items affecting thermal control are changed, thermal control plan will be updated, submitted, and accepted prior to placing concrete.

K. Service Life Report: Service Life Report shall demonstrate that performance of structure will meet Project Requirements. Report shall account for applicable exposure conditions, utilize submitted concrete mixture proportions and materials, use results of laboratory testing, and provide results of service life modeling in tabular or graphical format. Refer to the Service Life reporting requirements in the Part 2 Article on CONCRETE MIXTURES FOR BUILDING

ELEMENTS.

GUIDE SPECIFICATIONS

CAST-IN-PLACE CONCRETE 033000 - 8

1. Include laboratory test reports indicating compliance with project specifications regarding durability as follows:

a. Resistance to chloride penetration in accordance with project specifications

b. Resistance to freeze-thawing (if applicable)

c. Resistance to sulfate-induced deterioration from internal and external sources of sulfates

d. Other potential durability deterioration mechanisms as indicated in the specification, if applicable.

1.5…