PE License (NCEES FE → PE) — US Professional Engineer Licensure

PE License (NCEES FE → PE) — US Professional Engineer Licensure

Credential header

• Credential: Professional Engineer (PE) license
• Issuing body: US state/territorial engineering licensing boards; the two gateway examinations (FE and PE) are developed and administered by NCEES (National Council of Examiners for Engineering and Surveying)
• Jurisdiction: United States, licensed state-by-state (no national license; comity/reciprocity between states)
• Level: Professional license — the legal gateway to stamp/seal drawings, offer engineering services to the public, and use the title "Professional Engineer"
• Prerequisites: ABET-accredited (EAC) engineering degree (typical; some states allow experience-based substitutes), pass the FE exam, ~4 years of progressive experience under a licensed PE, pass the discipline PE exam, state board application (some states add jurisprudence/ethics exams)
• Renewal: Per state board, typically every 1–2 years with professional development hours (PDH/CE) — commonly ~30 PDH per 2-year cycle; ethics-hour and fee rules vary by state

The universal pathway

Every PE in the United States walks essentially the same road, whatever the discipline:

1. Education. Graduate from an ABET-accredited engineering program (a few states accept engineering technology degrees, foreign degrees via NCEES credential evaluation, or long experience in lieu of a degree — e.g., Washington's experience-based paths — but the accredited degree is the standard route).
2. FE exam → Engineer Intern (EI/EIT). The Fundamentals of Engineering exam: 110 multiple-choice questions, 6 hours, computer-based at Pearson VUE. Passing makes you an Engineer Intern (or Engineer-in-Training) in most states. Take it in your senior year or immediately after graduation while the fundamentals are fresh — this is the single highest-leverage timing decision in the whole pathway.
3. ~4 years progressive experience. Work under the responsible charge of a licensed PE. "Progressive" means increasing responsibility and engineering judgment, not four years of the same task. Keep a detailed experience log with dates, projects, and your PE supervisor's name — most state applications require references from licensed PEs who supervised you.
4. PE exam. Pass the NCEES Principles and Practice of Engineering exam in your discipline. Most exams are computer-based; the small-population disciplines (Agricultural & Biological, Control Systems, Fire Protection, Industrial & Systems, Mining & Mineral Processing, Nuclear) are administered on a single day per year. The large-population exams (Civil, Mechanical, Electrical & Computer: Power, Chemical, Metallurgical & Materials, Environmental, Petroleum) run year-round at Pearson VUE.
5. State board licensure. Apply to your state board with transcripts, experience verification, exam results, and references. Some states let you sit the PE exam early (before completing experience) but license you only after the experience requirement is met.
6. Renewal. Maintain PDH hours on your board's cycle (NCEES recommends 15 PDH/year; most boards set ~30 per biennium). Keep records — boards audit.
7. Comity. To practice in another state, apply for licensure by comity (endorsement). The NCEES Records program (a verified, portable credential file) makes multi-state licensure far less painful.

The industrial exemption. In most states you do not need a PE to work as an engineer for an employer (e.g., designing products inside a company). You need one to offer engineering services to the public, stamp/seal designs, or practice independently. This is why PE density is high in civil/structural/fire protection and low in software/data. Know your state's version of the exemption — it determines whether the license is career-critical or optional for you.

NCEES exam structure in general

• Delivery: Computer-based testing (CBT) at Pearson VUE centers. Closed-book, but NCEES supplies searchable PDF reference material in-exam (the PE Reference Handbook plus discipline-specific exhibits such as ASABE standards PDFs on the Agricultural exam). You cannot bring your own references.
• Fees: $400 for most PE exams; $350 per component of the SE exam (breadth components). Verify current fees on ncees.org before registering.
• Scoring: Scaled; NCEES does not publish a passing percentage. First-time pass rates run roughly 60–77% depending on discipline and year.
• No NCEES biomedical or manufacturing exam. Biomedical engineers sit the PE in Mechanical, Electrical/Computer, Chemical, or another discipline; manufacturing engineers sit PE Industrial and Systems (covers manufacturing processes, quality, facilities) or PE Mechanical.

Discipline-exam variants

Each variant below is a separate NCEES PE exam. The license title granted is the same "PE" regardless of module or depth area, except in states like California that issue discipline-specific practice licenses and title authorities.

Civil — five depth areas (you choose one). Construction, Geotechnical, Structural, Transportation, or Water Resources and Environmental. The current format is 80 questions over an 8-hour exam within a 9-hour appointment, year-round at Pearson VUE. NCEES has been restructuring PE Civil to remove the old common breadth section in favor of a specialization-only format (reported ~2023–2024); confirm the current format on ncees.org before preparing.

• Construction: project planning and scheduling (CPM/PERT, resource leveling), estimating and cost control, temporary structures, equipment, safety (OSHA construction standards), quality.
• Geotechnical: subsurface exploration, soil mechanics (effective stress, consolidation, shear strength), shallow and deep foundations, earth-retaining structures, slope stability, seepage and dewatering.
• Structural: structural analysis (beams, frames, trusses), steel (AISC 360), concrete (ACI 318), foundations, loading (ASCE 7: dead, live, wind, seismic), connection design.
• Transportation: geometric design (horizontal/vertical curves, sight distance), traffic engineering (capacity, LOS, signal timing), pavements, transportation planning.
• Water Resources and Environmental: open-channel flow, pipe networks, hydrology (rational method, unit hydrograph), water/wastewater treatment, stormwater management.

Mechanical — three modules (you choose one); license title identical. 80 questions, 8 hours, year-round at Pearson VUE. First-time pass rates ~71–77%.

• HVAC and Refrigeration: psychrometrics, heating/cooling loads, refrigeration cycles, duct and pipe design, indoor air quality (ASHRAE 62.1), energy analysis.
• Machine Design and Materials: stress analysis, fatigue, bearings, gears, fasteners, material selection, failure theories.
• Thermal and Fluid Systems: thermodynamics cycles, heat transfer, fluid mechanics, turbomachinery, combustion.

Electrical and Computer: Power. 80 questions, year-round CBT. Three-phase power systems, symmetrical components, fault analysis, protection (relays, coordination), transformers, rotating machines, power electronics, NEC (NFPA 70) and the National Electrical Safety Code. The PE Reference Handbook plus the NEC is effectively the working library — know how to find, not memorize, code tables.

Chemical. Year-round CBT (confirm current scheduling on ncees.org). Mass and energy balances, thermodynamics, fluid mechanics, heat transfer, mass transfer (distillation, absorption), reaction engineering (reactor sizing, kinetics), process control, plant design and economics, process safety (relief sizing, HAZOP concepts), environmental compliance.

Environmental. 8-hour exam covering water/wastewater treatment, air quality (dispersion, control devices), solid and hazardous waste, site remediation, environmental regulations (CWA, SDWA, CAA, RCRA, CERCLA), environmental chemistry and microbiology, health and safety.

Fire Protection. 85 questions, 9.5-hour appointment, administered ONE day per year (next listed date April 13, 2027); $400. Fire dynamics (plume, ceiling jet, compartment fire), water-based suppression (hydraulic calculations per NFPA 13), special hazards (NFPA 11/12/17), fire alarm and detection (NFPA 72), smoke management, egress and life safety (NFPA 101), building construction and codes. The SFPE/NSPE/NCEES joint position paper recognizes PE licensure as the route for fire protection engineers stamping designs.

Control Systems. 85 questions, 9.5-hour appointment, single day per year (next listed date April 14, 2027); $400. Feedback control theory (transfer functions, stability, PID tuning), sensors and measurement, final control elements (valves, actuators), PLCs/DCS/SCADA, safety instrumented systems (IEC 61511 concepts), signal processing, control system documentation (P&IDs, loop diagrams). THE licensure route for engineers stamping SIS/control-system designs in the US.

Industrial and Systems. 85-question CBT family (annual single-day administration; manufacturing engineers sit this exam — there is no PE Manufacturing). Work measurement and methods, facilities planning and layout, manufacturing processes, quality engineering and statistics (control charts, capability, DOE), operations research (LP, queuing, simulation), human factors/ergonomics, engineering economics, project management.

Metallurgical and Materials. 80 questions, 8 hours; reported first-time pass rate ~69%. Thermodynamics of materials, phase diagrams and phase transformations, mechanical behavior (strengthening mechanisms, fracture, fatigue), materials processing (casting, deformation, heat treatment), corrosion and degradation, materials characterization, extractive metallurgy basics. California treats metallurgical as a title discipline — NCEES offers the exam nationally, but state boards decide recognition.

Mining and Mineral Processing. 85 questions, single day per year (next listed date October 27, 2026). Mine planning and design (surface and underground), rock mechanics and ground control, drilling and blasting, ventilation, mineral processing (comminution, flotation, hydrometallurgy), mine safety (MSHA regulations), environmental reclamation, mine economics.

Nuclear. 85 questions, 9.5-hour appointment, single day per year. Reactor physics (neutronics, criticality, kinetics), thermal-hydraulics, radiation protection and shielding, nuclear materials and fuel cycle, plant systems (PWR/BWR), nuclear safety and regulations (10 CFR), waste management. ANS supports candidates through its Professional Engineering Exam Committee (PEEC) prep programs.

Petroleum. Discipline PE exam (confirm current CBT format on ncees.org). Drilling engineering, reservoir engineering (material balance, decline curves, well testing), production operations (artificial lift, nodal analysis), formation evaluation, petroleum economics, HSE.

Agricultural and Biological. 85 questions over 8.5 hours, single day per year (next listed date October 28, 2026). Soil and water (irrigation, drainage, erosion), machinery systems, structures and environment (animal/plant facilities), food and bioprocessing, natural resources. ASABE standards are supplied as searchable in-exam PDFs — learn to navigate them rather than memorize values.

SE — the Structural Engineering exam (distinct from PE Civil: Structural). Two components, Vertical and Lateral, each with a breadth section and a depth section. Breadth sections are year-round (55 questions, 6-hour appointments, $350 each); depth sections are offered twice per year and are scenario-based with alternate item types (AITs). Depth tracks: buildings or bridges — you must take the same track for both components. You must obtain acceptable results on both components; acceptable component results do not expire. CBT began April 1, 2024. Prerequisite is typically an active PE plus progressive structural experience (e.g., Washington requires 2 years of progressive structural design on buildings in Seismic Design Category C or above, or bridges of 200+ ft total span). Note: not all jurisdictions accept the SE as PE-equivalent.

Key equations with units and assumptions

The PE is discipline-specific, so master your exam's handbook equations. A few representative ones showing the exam's style:

• Axial stress: σ = F / A, with σ in Pa (N/m2), F in N, A in m2. Assumes uniform stress over the cross-section, linear elasticity for strain relations.
• Beam flexure: σ = M * y / I, with M in N·m, y in m, I in m4. Assumes plane sections remain plane, small deflections.
• Three-phase real power: P = √3 V_LL I_L * pf, with P in W, V_LL in V (line-to-line), I_L in A (line current). Assumes balanced three-phase system.
• Pump power: P = ρ g Q * H / η, with P in W, ρ in kg/m3, Q in m3/s, H in m, η dimensionless. Assumes incompressible steady flow.
• Present worth: P = F / (1 + i)^n, with P, F in currency units, i per period, n periods. Assumes discrete compounding.
• Darcy-Weisbach head loss: h_f = f (L/D) (V^2 / 2g), with h_f, L, D in m, V in m/s, g = 9.81 m/s2, f dimensionless. Assumes full pipe flow.

Exam reality: because NCEES supplies the reference handbook in-exam, the exam rewards equation selection and unit discipline over memorization. The traps are wrong equation choice, inconsistent units (psi vs psf, gpm vs cfs), and distractor answers matching the classic mistakes.

Worked examples

Example 1 — Beam bending (Structural flavor). A simply supported steel beam spans L = 6.0 m and carries a uniform load w = 12 kN/m. Determine the maximum bending stress if the section modulus S = 4.2×10^-4 m3.

Maximum moment for a uniformly loaded simple beam: M_max = w L^2 / 8. Substituting: M_max = 12 kN/m (6.0 m)^2 / 8 = 12 * 36 / 8 = 54 kN·m. Convert to N·m: 54 kN·m = 54,000 N·m. Bending stress: σ = M / S = 54,000 N·m / 4.2×10^-4 m3 = 1.286×10^8 Pa = 128.6 MPa. Check: units N·m/m3 = N/m2 = Pa. Correct.

Example 2 — Three-phase power (Electrical Power flavor). A balanced three-phase motor draws 48 A line current at 480 V line-to-line with power factor 0.85 lagging. Find the real power.

P = √3 V_LL I_L pf = 1.732 480 V 48 A 0.85 = 1.732 480 = 831.4; 831.4 48 = 39,907; 39,907 0.85 = 33,921 W ≈ 33.9 kW. Reactive power would be Q = √3 V_LL I_L sin(arccos 0.85) = 1.732 480 48 * 0.527 ≈ 21.0 kVAR. The apparent power S = 39.9 kVA checks: √(33.9^2 + 21.0^2) = 39.9 kVA. Consistent.

Example 3 — Pump power (Mechanical/HVAC flavor). Water (ρ = 1000 kg/m3) flows at Q = 0.060 m3/s through a pump adding H = 25 m of head. Pump efficiency η = 0.72. Find the shaft power required.

Hydraulic power: P_h = ρ g Q H = 1000 9.81 0.060 25 = 14,715 W = 14.7 kW. Shaft power: P_s = P_h / η = 14.7 / 0.72 = 20.4 kW. Motor nameplate must exceed this; a 22–25 kW motor would be selected.

Example 4 — Present worth (economics appears on every PE). A project saves $18,000 per year for 8 years at i = 6% per year. What is the present worth of the savings?

P = A [(1+i)^n − 1] / [i(1+i)^n]. Compute (1.06)^8 = 1.5938. Numerator: 1.5938 − 1 = 0.5938. Denominator: 0.06 1.5938 = 0.09563. Factor = 0.5938 / 0.09563 = 6.2098. P = 18,000 * 6.2098 = $111,776 ≈ $111,800. Sanity check: 8 payments of $18k = $144k undiscounted; discounting at 6% gives a lower number — $111.8k is plausible.

Example 5 — Pipe head loss (Water Resources flavor). Water at 20 °C flows at V = 1.5 m/s through L = 800 m of D = 0.30 m pipe with Darcy friction factor f = 0.020. Find head loss.

h_f = f (L/D) (V^2 / 2g) = 0.020 (800 / 0.30) (1.5^2 / (2 9.81)). L/D = 2666.7. V^2/2g = 2.25 / 19.62 = 0.1147 m. h_f = 0.020 2666.7 * 0.1147 = 6.12 m. A ~6.1 m head loss over 800 m of 300-mm pipe at 1.5 m/s is realistic.

Standards and regulations cross-reference

Know what each governing document covers and where to find things in it — the exam tests application, and several disciplines' exams embed code-lookup-style questions:

• Civil/Structural: ASCE 7 (Minimum Design Loads), ACI 318 (concrete), AISC 360 (steel), AASHTO LRFD (bridges), MUTCD (traffic control), OSHA 29 CFR 1926 (construction safety).
• Mechanical: ASHRAE 90.1 (energy), ASHRAE 62.1 (ventilation/IAQ), ASME Boiler and Pressure Vessel Code sections relevant to your module, ASME B31 (piping).
• Electrical: NFPA 70 National Electrical Code, NFPA 70E (electrical safety in the workplace), National Electrical Safety Code (NESC).
• Chemical/Environmental: OSHA PSM 29 CFR 1910.119, EPA RMP 40 CFR 68, Clean Water Act / SDWA / CAA / RCRA / CERCLA framework, NFPA 30 (flammable liquids).
• Fire Protection: NFPA 13 (sprinklers), NFPA 72 (fire alarm), NFPA 101 (life safety), NFPA 11/12/17 (special suppression), IBC fire chapters.
• Agricultural: ASABE standards (supplied in-exam as searchable PDFs).
• Mining: MSHA 30 CFR regulations. Nuclear: 10 CFR (esp. Parts 50, 55, 100). Petroleum: API standards family.

Pitfalls and exam strategy

1. The reference handbook is the exam. Two weeks before the exam, practice searching the PDF the way you'll use it in the testing center — speed at locating the right equation beats derivation fluency under time pressure. Time budget: roughly 6 minutes per question on an 80-question exam.
2. Annual-exam scheduling risk. The small-population exams run one day per year. Missing the registration window or failing means a full year of waiting — build margin into your study plan and confirm the date on ncees.org early.
3. State extras. California adds seismic and surveying exams for civil licensure; several states add jurisprudence exams. Passing the NCEES exam is necessary but not always sufficient.
4. Experience documentation starts now. Keep the log contemporaneously; reconstructing four years of "progressive experience" at application time is miserable and delays licensure.
5. Memorize vs derive: memorize unit conversions and the conditions under which each equation applies; derive nothing under pressure — the handbook has the formulas, but only you know which one the problem wants.
6. Trap patterns: answers matching the unconverted-units calculation (the classic psi/psf or minutes/hours slip); "most nearly" wording where two answers are close; questions that give extraneous data to tempt a more complex method.
7. Comity is not automatic. Budget weeks for each additional state, and keep one NCEES Record current.

Practice problems

1. A W-shape steel beam with S = 6.8×10^-4 m3 carries M_max = 92 kN·m. Compute the maximum bending stress in MPa.
2. A 208 V three-phase balanced load draws 65 A at 0.78 pf lagging. Compute real power in kW.
3. A pump must deliver 0.040 m3/s of water against 32 m of head at 68% efficiency. What shaft power (kW) is required?
4. Annual savings of $25,000 for 10 years at 5% interest. Compute the present worth.
5. A 400-mm-diameter pipe, 1200 m long, carries water at 1.2 m/s with f = 0.018. Compute head loss in m.
6. A simply supported beam with span 8 m carries a midpoint concentrated load of 40 kN. What is the maximum bending moment?

Answers: 1. σ = 92,000 / 6.8×10^-4 = 1.353×10^8 Pa = 135.3 MPa. 2. P = 1.732 × 208 × 65 × 0.78 = 18,266 W ≈ 18.3 kW. 3. P_h = 1000 × 9.81 × 0.040 × 32 = 12,557 W; P_s = 12.557/0.68 = 18.5 kW. 4. (1.05)^10 = 1.6289; factor = 0.6289/(0.05 × 1.6289) = 7.7217; P = 25,000 × 7.7217 = $193,043 ≈ $193,000. 5. L/D = 3000; V^2/2g = 1.44/19.62 = 0.07339 m; h_f = 0.018 × 3000 × 0.07339 = 3.96 m. 6. M_max = P·L/4 = 40 × 8 / 4 = 80 kN·m.

Original ETS reference writing, verified against public sources on 2026-09-30. Thin sourcing is flagged inline. Not legal advice — confirm current editions with the issuing body.