What Is PE-S?

What PE-S Actually Is

On this site, PE-S refers to the Principles and Practice of Engineering - Structural examination, published by the National Council of Examiners for Engineering and Surveying (NCEES). NCEES labels it the PE Structural exam, and most engineers simply call it the SE exam. It is a licensure examination for structural engineers, not a vendor certificate, and it is a different animal from the PE Civil: Structural pathway. It covers the full structural scope: gravity and lateral forces, buildings and bridges, and every major construction material.

If you are still sorting out terminology, our short explainers on what PE-S stands for and the meaning of PE-S cover the naming. This article focuses on how the exam is built and what it demands.

The Four-Section Structure

The defining feature of PE-S is that it is not one exam day. It is four computer-based sections, each scheduled on its own through Pearson VUE:

1. Vertical breadth (gravity/other and incidental lateral)
2. Vertical depth
3. Lateral breadth (wind and earthquake)
4. Lateral depth

The Vertical and Lateral groupings are called components. Both components must have acceptable results, and an acceptable result in a completed component does not expire. That lets you finish one component, take stock, and then attack the other rather than carrying the whole load at once.

Taken together, one attempt at all four current sections adds up to 230 questions (170 scored, 60 pretest) and 23 hours of actual testing, spread over four sittings. Total appointment time is 25 hours. It is not a single 23-hour marathon.

Format and Logistics at a Glance

Each appointment also includes a 2-minute nondisclosure agreement, an 8-minute tutorial, and a 20-minute scheduled break. Pretest questions are unscored, but they are indistinguishable from scored ones, so you must treat every item as live.

The exam is closed book. You get the electronic NCEES PE Structural Engineering Reference Handbook plus the specified electronic design standards, presented by chapter and searchable. You may not bring personal references. Units are USCS, and only approved calculators are allowed. The applicable 2026 code editions are listed in the specifications, so study from those editions rather than whatever happens to be on your office shelf.

Breadth Content: Vertical and Lateral

Each breadth section tests across the full discipline, and both Buildings and Bridges material can appear. The breadth outlines are organized into two big headings: Analysis of Structures and Design and Details of Structures. Published question ranges are:

• Vertical: Analysis of Structures 15-23 questions; Design and Details of Structures 30-48 questions
• Lateral: Analysis of Structures 17-26 questions; Design and Details of Structures 28-46 questions

Design and Details has the larger range in each outline, so design-code fluency is where the bulk of your points live. NCEES does not publish fixed percentage weights, and we do not infer them here. Treat the ranges as emphasis guidance, not a scoring formula.

Because the same material headings appear in both components, a strong grounding in each material pays twice. A concrete engineer who understands shear wall detailing for lateral breadth will find that knowledge feeding the gravity-side concrete questions too. Our complete guide to all 54 content areas lays out every heading across the four sections.

Depth: Buildings or Bridges

The depth sections are where PE-S asks you to specialize. You choose Buildings or Bridges, and you must use the same option for both the Vertical and Lateral depth sections. You do not take both tracks.

Vertical depth topics

Lateral depth topics

One caution on reading these outlines: the depth knowledge areas are topics that may be included. They are not guaranteed independent allocations, and the breadth examples are not exhaustive. The specifications are descriptions of the exam, not a curriculum.

How Questions Are Presented

Breadth sections are conventional multiple-choice with a single response. Depth sections are different. In the 2026 format, each depth section contains five alternative-item-type scenarios of 12 items each. Four of those scenarios contain 10 scored and 2 pretest items; the fifth consists of 12 pretest items. Alternative item types receive no partial credit, so an answer is either right or it earns nothing.

That has real implications for how you practice. Scenario questions reward the habit of reading a project description, extracting the governing load case or code provision, and committing to a defensible answer. Time spent on a single sprawling scenario is time not spent elsewhere, so practice moving through a scenario with a plan rather than reworking it three times. Our difficulty guide discusses where candidates tend to lose time.

Fees, Registration and Boards

NCEES charges USD 350 per section, which is a calculated USD 1,400 for one attempt at all four. That figure excludes licensing board charges, preparation costs, and any retakes. Breadth is offered year-round, while depth is offered twice a year. The next Lateral depth administration is October 27, 2026, and Vertical depth follows on October 28, 2026.

Your licensing board typically governs the approval step before you can schedule, and board processes and fees vary by jurisdiction. For a full money breakdown, see PE-S certification cost, and for scheduling mechanics see PE-S exam dates. Continuing-education renewal is also a board matter, separate from passing the exam; NCEES offers board-specific CPC tracking context for that.

Pass Rates and Scoring

NCEES uses an equated minimum-competence standard and does not publish a universal passing score. That means the number of questions you must answer correctly can differ across exam forms, because the standard is adjusted so that candidates face an equivalent bar. Details are on the passing score page.

The issuer's pass-rate table, updated July 2026, reports first-time and repeat cohorts separately for each section and depth option:

Read these carefully. They are separate section and option populations, not one overall SE pass rate, and they are not October 2026 outcomes. Some cohorts are small, particularly the Bridges groups, so a single percentage should not be over-interpreted. For more context, see what the pass-rate data shows.

The April 2027 Depth Change

The format described above applies to the 2026 administrations. Starting April 2027, each depth section changes to 48 questions: 40 scored and 8 pretest. Actual testing time stays at 6 hours, and the depth sections will include multiple-choice items in addition to alternative item types. NCEES posts separate 2027 specifications and standards.

If you plan to test in 2027 or later, do not apply this article's 60-question depth description to your preparation. One wrinkle worth knowing: the NCEES Examinee Guide's summary table lists 60 depth questions alongside 2027 dates, while the dedicated Structural page specifies 48 beginning April 2027. The version-specific Structural notice is the governing source for the future format.

Sequencing Your Study Around the Exam

Rather than a generic schedule, use the exam's own structure to decide order. Because breadth runs year-round and depth only twice a year, many candidates anchor their plan on the depth window and work backward. A sensible sequence ties each phase to a specific section:

Completed components do not expire, so there is no penalty for finishing one before the other. For a fuller plan, see the PE-S study guide and the one-page cheat sheet for quick review.

Who Hires PE-S Holders

Structural licensure matters most where engineers take responsibility for the safety of buildings and bridges. Typical employers include structural engineering consultancies, architecture-engineering firms, state and local transportation agencies, construction and design-build firms, and public works departments. Your depth choice tends to line up with your career track: Buildings candidates often work in consultancies and A/E firms, while Bridges candidates are common in transportation agencies and bridge-focused consultancies.

Whether the credential is worth the investment depends on your path and jurisdiction. We cover the economics in the salary guide and the ROI analysis, and you can browse role types on the PE-S jobs page. When you are ready to test your readiness, our practice exam platform is built around this exam's structure.

Frequently Asked Questions