- What the PE Structural Credential Actually Is
- Four Sections, Four Sittings: How the Exam Is Built
- What the Breadth Sections Cover
- Depth: Choosing Buildings or Bridges
- Question Formats and Testing Rules
- Fees, Scheduling and Registration Mechanics
- What the Published Results Data Shows
- The April 2027 Format Change
- Passing Is Not the Same as Being Licensed
- Who Hires Licensed Structural Engineers
- Sequencing Your Preparation Around the Four Sections
- Frequently Asked Questions
- PE-S here means the NCEES Principles and Practice of Engineering - Structural exam, widely known as the SE exam.
- One attempt means four separate computer-based sections: Vertical breadth, Vertical depth, Lateral breadth, Lateral depth.
- Each section costs USD 350 to NCEES, so one full attempt is USD 1,400 before board fees.
- You pick Buildings or Bridges for depth and must use the same option in both depth components.
What the PE Structural Credential Actually Is
PE-S is the abbreviation this site uses for the Principles and Practice of Engineering - Structural examination, which the National Council of Examiners for Engineering and Surveying (NCEES) officially labels "PE Structural" and which most engineers simply call the SE exam. It is the examination that structural engineers use to demonstrate competence in designing and analyzing structures such as buildings and bridges as part of the path to structural licensure.
Two clarifications up front, because they trip people up. First, this is not the PE Civil: Structural exam, which is a single-day exam in a different discipline format. The PE Structural exam is its own, much longer examination. Second, it is not a Buildings-only test. Candidates are tested on both buildings and bridges in the breadth sections, then specialize in one for depth.
If you want the shorter definition pages first, see What Is PE-S? and What Does PE-S Stand For?. This article goes deeper into how the exam is actually organized and what that means for candidates.
Four Sections, Four Sittings: How the Exam Is Built
The defining feature of PE Structural is its modular structure. The exam is delivered by Pearson VUE as four separately scheduled computer-based sections, split into two components:
- Vertical Forces (Gravity/Other) and Incidental Lateral component: one breadth section and one depth section.
- Lateral Forces (Wind/Earthquake) component: one breadth section and one depth section.
Both components must produce acceptable results for you to complete the exam, and an acceptable completed-component result does not expire. That detail matters for planning: you can attack the exam in pieces rather than carrying all the risk into a single sitting.
| Section type (2026) | Questions | Scored / Pretest | Actual testing time | Appointment |
|---|---|---|---|---|
| Breadth (each) | 55 | 45 / 10 | 5 hr 30 min | 6 hours |
| Depth (each, April/October 2026) | 60 | 40 / 20 | 6 hours | 6 hr 30 min |
| All four sections, one attempt | 230 | 170 / 60 | 23 hours | 25 hours |
What the Breadth Sections Cover
The two breadth sections test the same family of topics through two lenses: gravity-type loading in the Vertical section and wind/earthquake loading in the Lateral section. Breadth questions are multiple-choice, single-response, and they span both buildings and bridges. The official specifications organize each breadth outline under headings that parallel each other.
Vertical breadth headings
The Vertical breadth outline is organized around Analysis of Structures (including Generation of Loads and Load Distribution and Analysis Methods) and Design and Details of Structures (including General Structural Considerations, Structural Systems Integration, Structural Steel, Cold-Formed Steel, Concrete, Wood, Masonry, and Foundations and Retaining Structures). The published ranges are 15-23 questions for Analysis of Structures and 30-48 for Design and Details of Structures.
Lateral breadth headings
The Lateral breadth outline mirrors that structure with the same material and topic headings applied to wind and earthquake forces. Published ranges are 17-26 questions for Analysis of Structures and 28-46 for Design and Details of Structures.
Why Design and Details dominates
In both breadth outlines, Design and Details of Structures carries the larger published question range. Practically, that means material-specific design knowledge is where most breadth questions live.
- Structural steel and concrete design are core to both breadth sections.
- Wood, masonry, and cold-formed steel each appear as their own headings, so they cannot be ignored.
- Foundations and retaining structures appear in both Vertical and Lateral outlines.
- Structural systems integration tests how members and systems work together, not just isolated element checks.
One caution: NCEES does not publish fixed percentage weights, and the subordinate examples listed in the specifications are not exclusive or exhaustive. Treat the outlines as scope statements rather than a guaranteed allocation of questions. For a heading-by-heading walkthrough, see PE-S Exam Domains 2026: Complete Guide to All 54 Content Areas. The "54" there is a count of sequential headings across breadth and depth outlines, not a declaration by NCEES of 54 independent domains.
Depth: Choosing Buildings or Bridges
Depth is where PE Structural stops being a general test and becomes a specialization. You choose Buildings or Bridges, and you must use the same option in both the Vertical and Lateral depth components. You do not take both tracks.
Vertical depth topics
Vertical depth - Buildings
Scenario topics are steel, concrete, wood, and masonry structures. Knowledge areas that may be included:
- Conceptual design and project planning
- Structural loading and analysis
- Design and details of elements
- Design and details of joints and connections
- Preparation of documents and construction administration
Vertical depth - Bridges
Scenario topics are concrete superstructure, steel superstructure, and other elements of bridges (for example culverts, abutments, and retaining walls). Knowledge areas:
- Conceptual design and project planning
- Structural loading and analysis
- Design and preparation of details
Lateral depth topics
Lateral depth - Buildings
Scenario topics are steel structure, concrete structure, wood and/or masonry structure, and general analysis (for example existing structures, secondary structures, nonbuilding structures, and/or computer verification). Knowledge areas mirror the Vertical Buildings list: conceptual design and project planning, structural loading and analysis, design and details of elements, design and details of joints and connections, and preparation of documents and construction administration.
Lateral depth - Bridges
Scenario topics are piers or abutments, foundations, and general analysis of seismic forces. Knowledge areas: conceptual design and project planning, structural loading and analysis, and design and preparation of details.
Note that the knowledge areas are topics that may be included, not guaranteed independent allocations of questions. Your choice of Buildings or Bridges should reflect the work you actually do, since depth rewards genuine design experience in the chosen area. If you are weighing how demanding each option is, How Hard Is the PE-S Exam? Complete Difficulty Guide 2026 discusses the exam's challenge in more detail.
Question Formats and Testing Rules
Breadth sections use multiple-choice, single-response questions. Depth sections in 2026 are built from alternative-item-type scenarios: each depth section contains five scenarios of 12 items each. Four of those scenarios contain 10 scored and 2 pretest items, and one contains 12 pretest items. Alternative item types receive no partial credit, so a multi-part answer is right or wrong as a whole.
The exam is closed book. You get the supplied electronic NCEES PE Structural Engineering Reference Handbook and the specified electronic design standards, with searchable standards presented by chapter. Personal references are not allowed. Questions use USCS units, and only approved calculators may be used. The applicable code editions for 2026 are listed in the official specifications.
Fees, Scheduling and Registration Mechanics
NCEES charges USD 350 per section. For one attempt at all four sections, that is a calculated USD 1,400, excluding state board charges, preparation costs, and retakes. Because sections are scheduled and paid for individually, a retake of one section does not require re-buying the others. For the full pricing picture, see PE-S Certification Cost 2026: Complete Pricing Breakdown.
Scheduling differs by section type:
- Breadth is offered year-round.
- Depth is offered twice a year, in April and October windows.
- The next Lateral depth administration is on October 27, 2026, and Vertical depth is on October 28, 2026.
Since depth is the scarce, twice-yearly resource, most candidates plan backward from a depth date and fit breadth sittings around it. Details on windows and deadlines are in PE-S Exam Dates 2026: Testing Windows, Deadlines & Scheduling.
What the Published Results Data Shows
NCEES publishes a pass-rate table, updated July 2026, broken out by section and depth option. First-time and repeat cohorts are reported separately:
| Section / option | First-time rate (examinees) | Repeat rate (examinees) |
|---|---|---|
| Lateral breadth | 45% (167) | 26% (54) |
| Lateral depth - Bridges | 63% (32) | 57% (14) |
| Lateral depth - Buildings | 63% (131) | 73% (161) |
| Vertical breadth | 44% (209) | 45% (64) |
| Vertical depth - Bridges | 37% (46) | 56% (16) |
| Vertical depth - Buildings | 54% (188) | 68% (152) |
Read this carefully. These are separate section and option populations, not one overall SE pass rate, and they are not October 2026 outcomes. The bridge cohorts in particular are small, so their percentages can swing. Breadth first-time rates sit in the mid-40s for both components, which is a useful reminder that the "general" sections are not the easy part. For more discussion, see PE-S Pass Rate 2026: What the Data Shows.
On scoring: NCEES uses an equated minimum-competence standard and does not publish a universal passing score. That is why you will not find a single cut percentage to aim for; see PE-S Passing Score 2026: Exactly What You Need to Pass for how to think about it.
The April 2027 Format Change
Starting April 2027, each depth section changes to 48 questions, comprising 40 scored and 8 pretest, with testing time staying at 6 hours. The 2027 depth sections include multiple-choice plus alternative item types. NCEES posts separate 2027 specifications and standards, so do not mix them with the 2026 scope described above.
Passing Is Not the Same as Being Licensed
Passing the four sections is an exam milestone, not a license. Eligibility, acceptance of this examination, license issuance, and continuing-education renewal are controlled by your licensing board, and each jurisdiction has its own rules. NCEES offers continuing-professional-competency tracking as a service, but board requirements are board-specific. Start with PE-S Requirements 2026: Eligibility, Prerequisites & How to Qualify, then confirm details directly with your board before you pay for any section.
Who Hires Licensed Structural Engineers
Licensed structural engineers are in demand across several employer types, and the Buildings versus Bridges choice tends to point you toward different ones:
- Structural engineering consultancies designing commercial, institutional, and residential buildings, where the Buildings depth path is the natural fit.
- Transportation and bridge design firms and public transportation agencies, where the Bridges path aligns with day-to-day work on superstructures, abutments, and foundations.
- Multidisciplinary architecture-engineering firms that need a licensed engineer of record.
- Forensic and existing-structure specialists, where lateral depth topics such as existing and secondary structures are directly relevant.
- Government agencies and owners' engineering groups reviewing or administering structural work.
For role-level detail see PE-S Jobs, and for the compensation side see PE-S Salary Guide 2026: Complete Earnings Analysis. Whether the investment pays off for your situation is covered in Is the PE-S Certification Worth It? Complete ROI Analysis 2026.
Sequencing Your Preparation Around the Four Sections
Rather than a generic schedule, think in terms of how the sections overlap. Material design knowledge (steel, concrete, wood, masonry, foundations) feeds all four sections, so it pays to build that base once and reuse it. A sensible ordering looks like this:
Shared material foundations
- Steel and concrete design provisions, since both appear in breadth and in every Buildings depth scenario list.
- Practice navigating the electronic reference handbook and code chapters.
Vertical component
- Gravity load generation and distribution, then Vertical breadth.
- Vertical depth scenarios in your chosen option, with alternative-item practice since there is no partial credit.
Lateral component
- Wind and seismic load generation, lateral system behavior, then Lateral breadth.
- Lateral depth scenarios, including seismic analysis if you chose Bridges or general analysis topics if you chose Buildings.
Because Vertical and Lateral depth fall on consecutive days in October 2026 administrations, check your candidate's actual appointment dates and avoid assuming both components can be taken back to back. For a fuller study framework, see the PE-S Study Guide 2026: How to Pass on Your First Attempt and PE-S Training, and keep the PE-S Cheat Sheet 2026: One-Page Review of Must-Know Facts handy for quick recall. To test yourself on each section's style, try the PE-S practice questions.
Key Takeaway
Treat PE Structural as four projects, not one. Pick your depth option early, anchor your plan to the twice-yearly depth dates, and use the scored-versus-pretest structure to remember that not every question you see will count.
Frequently Asked Questions
It refers to the NCEES Principles and Practice of Engineering - Structural exam, commonly called the SE exam. Passing all four sections is part of qualifying for structural licensure, subject to your licensing board's rules.
No. It is four separately scheduled computer-based sections: Vertical breadth, Vertical depth, Lateral breadth, and Lateral depth. Together they total 23 hours of actual testing across four sittings, with 25 hours of total appointment time.
No. You choose one depth option, Buildings or Bridges, and must use the same option in both the Vertical and Lateral depth components. Breadth sections cover both buildings and bridges.
NCEES charges USD 350 per section, which is a calculated USD 1,400 for one attempt at all four, excluding board charges, preparation costs, and retakes.
Each depth section changes to 48 questions (40 scored, 8 pretest) with 6 hours of testing, using multiple-choice plus alternative item types. The October 2026 depth sections still use the 60-question format.
No. Eligibility, acceptance of the exam, license issuance, and renewal requirements are set by your licensing board. Passing the four sections is one step in that process, not the license itself.
For related definitions, you can also read PE-S Certification and What Is A PE-S?, then confirm all current details against the official NCEES Structural exam page before you register.