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17.5 Section Numbering & the CSI Three-Part SectionFormat

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Architect Registration Examination ARE 5.0

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1 Chapter 1: ARE 5.0 Structure, Delivery & Scoring

1.1 The Six Divisions: Items, Durations, Sections & Objectives 1.2 Eligibility, PSI Delivery, Fees, Scheduling & Rescheduling 1.3 Cut Scores, Score Reports, Provisional Feedback & Retakes

2 Chapter 2: Licensure Path, Item Types & Test-Day Strategy

2.1 Education Standard, AXP Hours, Settings & Reporting Rules 2.2 The NCARB Record, Score Validity Policy & Reciprocity 2.3 Item Types, Case Studies, Exam Tools, Breaks & Pacing

3 Chapter 3: Practice Management — Firm Resources, Conduct & the Work Environment

3.1 Assessing Practice Resources: Staffing, Development & Capital Investment 3.2 Regulating the Work Environment: FLSA, Antidiscrimination Law, OSHA & ADA Title III 3.3 Ethical Standards, the NCARB Rules of Conduct & the Standard of Care 3.4 Business Structures, Firm Ownership Rules & Practice-Wide Methodologies

4 Chapter 4: Practice Management — Firm Finances & Financial Health

4.1 Utilization, Overhead, Break-Even & Net Multiplier 4.2 Liquidity, Solvency & Reading Firm Financials Strategically 4.3 Accrual vs. Cash Accounting & the Architectural Balance Sheet 4.4 The Income Statement, Net Operating Revenue & Cash Flow Management

5 Chapter 5: Practice Management — Risk, Insurance & Business Development

5.1 Risk Management & the Firm’s Insurance Portfolio 5.2 Contractual Risk Allocation, Intellectual Property & Dispute Resolution 5.3 Client Requests, Compensation Methods, Project Delivery & Project Risk

6 Chapter 6: Project Management — Team, Resources & Consultants

6.1 Assembling the Project Team: Roles, Authority & Selection Criteria 6.2 Allocating & Managing Project Resources: Hours, Rates & Leveling 6.3 Consultant Selection, Qualifications-Based Selection & Scope Boundaries 6.4 AIA C401: Flow-Through, Consultant Standard of Care, Insurance & Payment

7 Chapter 7: Project Management — Work Planning, Scheduling & Budget Control

7.1 The Project Work Plan & Phase Fee Allocation 7.2 Work Breakdown Structures, Scheduling Methods & Dependency Logic 7.3 Critical Path Calculations, Float & Schedule Compression 7.4 Project Communication: Paths, Instruments, Meetings & the Record 7.5 Monitoring the Project Budget with Earned Value Management 7.6 Scope Creep, Additional Services & Written Authorization

8 Chapter 8: Project Management — Contracts, Approvals & Quality Control

8.1 AIA B101: Initial Information, Standard of Care & Basic Services 8.2 B101: Owner Duties, Cost of the Work, Copyright, Termination & Compensation 8.3 The Owner-Contractor Agreement & A201 Contractor Responsibilities 8.4 A201: Architect Administration, Changes, Claims & Separate Contractors 8.5 Regulatory Compliance, Authorities Having Jurisdiction & Project Approvals 8.6 Documenting a Project for the Specified Delivery Method 8.7 Quality Assurance, Quality Control, Constructability & the Record

9 Chapter 9: Programming & Analysis — Site & Environmental Conditions

9.1 Climate Classification, Solar Geometry & Passive Site Opportunities 9.2 Microclimate, Wind, Topography, Grading & Site Hydrology 9.3 Environmental Due Diligence: CERCLA Liability & Phase I / Phase II Assessments 9.4 Soil Mechanics, Geotechnical Investigation & Foundation Selection 9.5 Vehicular Circulation, Access Management, Parking & Emergency Access

10 Chapter 10: Programming & Analysis — Zoning, Codes & Site Infrastructure

10.1 Pedestrian Circulation, Site Utilities & Contextual Constraints 10.2 Zoning Authority, Euclidean and Form-Based Codes & Bulk Standards 10.3 Non-Conforming Uses, Variances, Easements & Parking Feasibility 10.4 IBC Occupancy Classification, Mixed Occupancy & Incidental Uses 10.5 IBC Construction Types, Fire-Resistance Ratings & Compartmentation

11 Chapter 11: Programming & Analysis — Building Programming & Feasibility

11.1 Programming Methodology, Net vs. Gross Area & Building Efficiency 11.2 Adjacency Matrices, Bubble Diagrams, Blocking & Stacking 11.3 Evaluating an Existing Building Against a Program 11.4 Reviewing Project Budget & Schedule Feasibility Against Scope 11.5 Identifying Building & Structural System Alternatives at Programming

12 Chapter 12: Project Planning & Design — Siting, Configuration, Codes & Life Safety

12.1 Building Siting, Neighborhood Context, Zoning Application & Configuration 12.2 IBC Allowable Area: Tabular Area, Frontage & Sprinkler Increases 12.3 Building Height, Story Limits, Mixed Occupancy & Unlimited Area Buildings 12.4 Means of Egress Components & Occupant Load Calculation 12.5 Exit Count, Remoteness, Egress Capacity, Travel Distance & Dead Ends 12.6 Accessible Routes, Slopes, Protruding Objects & Ramp Design 12.7 Door Clearances, Operating Hardware & Accessible Toilet Room Geometry

13 Chapter 13: Project Planning & Design — Structural & Mechanical Systems

13.1 Selecting Structural Systems: Steel, Concrete, Wood & Masonry 13.2 Lateral Force-Resisting Systems, Wind Loads & Seismic Design 13.3 Thermal Comfort, ASHRAE Standard 55 & Psychrometrics 13.4 HVAC System Typologies, Spatial Allocation & Central Plant Equipment 13.5 Potable Water Supply, Drainage, Waste & Vent Systems 13.6 Electrical Distribution, Emergency Power, Lighting & Daylighting 13.7 Fire Suppression, Standpipes, Conveying, Security & Communications

14 Chapter 14: Project Planning & Design — Envelope, Materials & Cost

14.1 Envelope Thermodynamics, Heat Transfer & Fenestration Performance 14.2 Thermal Bridging, Continuous Insulation & Thermal Mass 14.3 Passive Solar Heating, Natural Ventilation & Daylighting Architecture 14.4 Material Selection Criteria, Fire Performance & Vapor Permeance 14.5 Life Cycle Assessment, Embodied Carbon & Material Transparency 14.6 Galvanic Compatibility, Thermal Movement & Masonry Durability 14.7 Cost Estimating by Phase & Contingency Planning 14.8 Life-Cycle Cost Analysis, Present Value & Value Engineering

15 Chapter 15: Project Development & Documentation — Roofing, Waterproofing & Wall Assemblies

15.1 Low-Slope Roofing Systems, Membranes & Drainage Geometry 15.2 Flashing, Parapets, Copings & Roof Penetration Detailing 15.3 Steep-Slope Roofing & Below-Grade Waterproofing 15.4 Enclosure Control Layers & Rain Screen Cladding Systems 15.5 Vapor Retarders, Permeance Classes & Dew Point Control

16 Chapter 16: Project Development & Documentation — Connections, Coordination & Interiors

16.1 Structural Steel Connections & Base Plate Detailing 16.2 Concrete Reinforcing, Cover & Building Movement Joints 16.3 Sizing Structural, Mechanical, Electrical & Plumbing Components 16.4 Ceiling Plenum Coordination, Clash Detection & Level of Development 16.5 Vertical Chases, Shaft Walls, Through-Penetration Firestopping & Rated Joints 16.6 Interior Partition Framing, Head-of-Wall Details & Rated Gypsum Assemblies 16.7 Sound Isolation, STC, NRC & Reverberation Time 16.8 Door and Frame Construction & Fire Door Assemblies Under NFPA 80 16.9 Hardware Functions, Fire-Protection vs. Fire-Resistance Glazing

17 Chapter 17: Project Development & Documentation — Drawings, Specifications & Estimates

17.1 The National CAD Standard, Sheet Modules & Title Blocks 17.2 Drawing Cross-Referencing, Coordination & Revision Control 17.3 Documenting Site Features: Survey, Civil, Grading, Utilities & Landscape 17.4 The Project Manual & CSI MasterFormat Divisions 17.5 Section Numbering & the CSI Three-Part SectionFormat 17.6 Specification Methods & Document Precedence 17.7 Quantity Takeoff Estimating, General Conditions, Overhead & Alternates

18 Chapter 18: Construction & Evaluation — Procurement, Bidding & Preconstruction

18.1 Procurement Methods & AIA A701 Instructions to Bidders 18.2 Addenda Mechanics & Surety Bonds 18.3 The Preconstruction Conference & Administrative Protocols 18.4 Submittal Schedules, Long-Lead Items, Permits & Special Inspections 18.5 Bid Opening, Bidder Qualification & Discrepancy Rules 18.6 Alternates, Allowances, Unit Prices & Contract Award

19 Chapter 19: Construction & Evaluation — Observation & Contract Administration

19.1 The Architect’s Site Observation Role & the Means and Methods Firewall 19.2 Rejecting Non-Conforming Work, Special Inspections & Field Reports 19.3 Submittal Workflow, Review Responsibility & Action Stamps 19.4 Delegated Design, Design-Assist & Deferred Submittals 19.5 Requests for Information & Architect’s Supplemental Instructions 19.6 Change Orders, Construction Change Directives & Instrument Comparison

20 Chapter 20: Construction & Evaluation — Payment, Closeout & Evaluation

20.1 The Schedule of Values & the Application and Certificate for Payment 20.2 Stored Materials, Retainage, Certification Duties & Withholding 20.3 Substantial Completion & the Punch List Protocol 20.4 The Certificate of Substantial Completion & Its Legal Consequences 20.5 Final Completion, Final Payment & the Closeout Package 20.6 Warranty Administration, the Eleven-Month Walk-Through & Post-Occupancy Evaluation

17.5 Section Numbering & the CSI Three-Part SectionFormat

Key Takeaways Explain This Topic AI

MasterFormat section numbers use six digits in three pairs, identifying division, then level-two and level-three subdivisions.

Part 1 General covers administrative and procedural requirements such as submittals, quality assurance, delivery and storage, and warranty.

Part 2 Products covers manufacturers, materials, equipment, fabrication, mixes, and source quality control.

Part 3 Execution covers examination, preparation, installation, field quality control, cleaning, and protection.

A requirement written in the wrong part is frequently missed, which is why a submittal requirement belongs in Part 1 rather than in Part 3.

Last updated: September 2026

Six-Digit Section Numbering Hierarchy

Under MasterFormat, every technical specification section is identified by a standardized six-digit number structured into three distinct numerical pairs: 03 ⏟ Level 1 30 ⏟ Level 2 53 ⏟ Level 3 (e.g., Miscellaneous Cast-in-Place Concrete) \mathbf{\underbrace{03}_{\text{Level 1}} \; \underbrace{30}_{\text{Level 2}} \; \underbrace{53}_{\text{Level 3}}}\text{ (e.g., Miscellaneous Cast-in-Place Concrete)} Level 1 03 ​ ​ Level 2 30 ​ ​ Level 3 53 ​ ​ (e.g., Miscellaneous Cast-in-Place Concrete)

Level 1 (Division): The first two digits represent the MasterFormat Division (e.g., 03 00 00 Concrete, 08 00 00 Openings, 09 00 00 Finishes).

Level 2 (Broad Scope): The second two digits establish the broad technical category or sub-trade within the division (e.g., 03 30 00 Cast-in-Place Concrete, 07 21 00 Thermal Insulation, 09 22 00 Supports for Plaster and Gypsum Board).

Level 3 (Medium Scope / Subject Level): The third two digits designate the specific product, material, or discrete technical system (e.g., 03 30 53 Miscellaneous Cast-in-Place Concrete, 07 21 16 Blanket Insulation, 08 11 13 Hollow Metal Doors and Frames, 09 29 00 Gypsum Board).

Optional Level 4 (Narrow Scope): An optional dot suffix with two additional digits may be appended for highly specialized items (e.g., 03 30 53.13 Underslab Vapor Barriers).

CSI SectionFormat — The Standard 3-Part Structure

While MasterFormat organizes the overall Project Manual, CSI SectionFormat standardizes the internal layout of every individual specification section. Every section—from 03 30 00 (Concrete) to 26 51 00 (Interior Lighting)—is organized into three mandatory parts , always appearing in the exact same numerical sequence: SECTION FORMAT (3-PART SPECIFICATION)

  • ├── PART 1 — GENERAL
  • │ ├── Section Includes & Related Requirements
  • │ ├── Administrative Submittals (Shop Drawings, Product Data, Samples)
  • │ ├── Quality Assurance, Testing Agency & Mockups
  • │ ├── Delivery, Storage, and Handling
  • │ └── Project / Site Environmental Conditions & Warranty
  • ├── PART 2 — PRODUCTS
  • │ ├── Acceptable Manufacturers & Proprietary Selections
  • │ ├── Raw Materials, Performance Criteria & Physical Properties
  • │ ├── Mix Designs & Proportions
  • │ ├── Factory Fabrication & Assembly Tolerances
  • │ └── Source (Factory) Quality Control
  • └── PART 3 — EXECUTION
  • ├── Examination of Substrates & Pre-installation Inspection
  • ├── Site Preparation & Surface Conditioning
  • ├── Field Installation, Erection, and Workmanship
  • ├── Field Quality Control (Testing, Inspections, Slump/Cylinder Breaks)
  • ├── Adjusting & Calibrating
  • └── Cleaning and Protecting Finished Work
  • Part 1 — General: Administrative and Operational Parameters

Part 1 defines the administrative, contractual, and technical boundaries unique to the specific section, operating under the umbrella of Division 01:

Section Includes: A concise bulleted summary of the primary materials and scope of work specified in the section.

Related Requirements: Direct cross-references to other specification sections that interface with this work (e.g., Section 04 20 00 Masonry referencing Section 07 21 00 Cavity Wall Insulation).

References: List of industry consensus testing standards cited within the text (e.g., ASTM C150, ACI 301, ANSI A118.1).

Submittals: Dictates specific submittal requirements: manufacturer product data sheets, shop drawings, finish samples, mockups, engineering calculations sealed by a licensed engineer, and closeout submittals (O&M manuals, warranties).

Quality Assurance: Establishes fabricator qualifications, installer certifications (e.g., minimum 5 years documented commercial experience), independent testing laboratory accreditations, and mandatory pre-installation conferences.

Mockups: Dictates requirements for constructing full-scale field mockups to establish the acceptable aesthetic and technical standard of workmanship before mass production begins.

Delivery, Storage, and Handling: Specifies environmental protection during transit and jobsite storage (e.g., storing drywall flat on dunnage in an enclosed, dry space).

Field Conditions: Establishes mandatory ambient temperature, relative humidity, and substrate moisture conditions before, during, and after installation.

Warranty: Specifies extended manufacturer warranties and installer warranties that exceed the standard 1-year contractor warranty required by AIA A201 (e.g., a 20-year no-dollar-limit roofing membrane warranty).

Part 2 — Products: Materials, Systems & Fabrication

Part 2 defines the physical components, manufactured assemblies, and equipment before they arrive at the jobsite:

Acceptable Manufacturers: Lists approved manufacturers, proprietary product lines, and substitution criteria.

Materials: Details raw material grades, physical dimensions, sheet thicknesses, chemical formulations, alloy compositions, and performance criteria (e.g., flame spread index, thermal U-factor, compressive strength).

Mix Designs: Defines precise engineering proportions for field- or plant-mixed materials, such as concrete compressive strengths (e.g., 4,000 psi at 28 days), maximum water-cementitious materials ratios ( w / c m ≤ 0.45 w/cm \le 0.45 w / c m ≤ 0.45 ), air entrainment percentages, and slump ranges.

Fabrication: Specifies shop assembly methods, factory welding, structural tolerances, factory prime coatings, and hardware cutouts.

Source Quality Control: Mandates shop inspections, factory load tests, and mill test certificates conducted at the manufacturing plant prior to shipment.

Part 3 — Execution: Field Preparation, Installation & Quality Control

Part 3 dictates how materials are inspected, installed, tested, and protected on the physical jobsite:

Examination: Mandates that the installer inspect existing substrates and rough-in work before proceeding. The installer must deliver written notice of unsatisfactory substrate conditions; beginning installation constitutes formal acceptance of the substrate.

Preparation: Details surface cleaning, mechanical abrading, priming, leveling, layout chalk lines, and environmental conditioning.

Installation / Application: Step-by-step instructions for physical erection, fastener patterns, expansion joint spacing, mortar joint tooling, plumb and level tolerances.

Field Quality Control: Outlines mandatory jobsite testing and special inspections (per IBC Chapter 17), such as concrete slump testing, casting test cylinders for compressive strength breaks, structural steel weld non-destructive testing (NDT), air/water barrier field adhesion testing, and roofing flood tests.

Adjusting: Calibration of operating components, hardware adjustment, mechanical balancing.

Cleaning: Removal of protective films, mortar stains, excess sealants, and final cosmetic cleaning.

Protection: Specifies post-installation protections (e.g., temporary plywood floor coverings, weather enclosures) to safeguard finished work against damage from subsequent construction trades until Substantial Completion.