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100+ Free Bac F4 Bénin Practice Questions

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2026 Statistics

Key Facts: Bac F4 Bénin Exam

Coeff 3 + 3

Weight of the two mandatory practicals: Projet d'Exploitation T.P. and Dessin Technique T.P. (4h each)

OBB — Liste des épreuves à l'examen du Baccalauréat

28 / 560 pts

Total coefficients and points for Série F4 including the 5-subject second-group oral

OBB — Liste des épreuves à l'examen du Baccalauréat

57.48%

Série F4 admissibility rate, June 2026 session

Office du Baccalauréat du Bénin, results proclamation 8 July 2026

10.00 / 20

Passing weighted average (9.00–9.99 is admissible to the second-group oral)

Décret fixing the Baccalauréat rules, Articles 17–18

7 Written

Number of first-group written technical and general subject papers (22 total written & practical hours)

OBB — Liste des épreuves à l'examen du Baccalauréat

Free 100-question English MCQ study adaptation for the Benin Baccalauréat Série F4 (Génie Civil). The official assessment is delivered in French by the OBB and is mixed: written papers in RDM (coeff 3), Mathématiques (coeff 3), Béton Armé (coeff 2), Métré et Étude de Prix (coeff 2), Procédé de Construction (coeff 2), Sciences Physiques (coeff 2), and Français (coeff 2); practicals in Projet d'Exploitation (coeff 3) and Dessin Technique (coeff 3); plus EPS (coeff 1) and a 5-subject second-group oral (coeff 5) for candidates averaging 9.00–9.99/20. Pass threshold is a weighted 10.00/20.

Sample Bac F4 Bénin Practice Questions

Try these sample questions to test your Bac F4 Bénin exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1In beam mechanics (RDM), what is the fundamental differential relationship connecting the distributed load q(x), the shear force V(x), and the bending moment M(x) along the beam axis x (using standard civil engineering sign conventions)?
A.dV/dx = -q(x) and dM/dx = V(x)
B.dV/dx = q(x) and dM/dx = -V(x)
C.dV/dx = -M(x) and dM/dx = q(x)
D.dV/dx = d²M/dx² = -q(x) / E
Explanation: From static equilibrium of an infinitesimal beam element of length dx, the vertical equilibrium yields dV/dx = -q(x), and the moment equilibrium yields dM/dx = V(x). Combining these two differential relations gives d²M/dx² = -q(x). This relationship is the basis for constructing shear force and bending moment diagrams.
2What is the second moment of area (moment quadratique / moment of inertia I_Gz) of a solid rectangular beam cross-section of width b and total height h about its horizontal centroidal axis Gz?
A.I_Gz = b · h³ / 12
B.I_Gz = b³ · h / 12
C.I_Gz = b · h² / 6
D.I_Gz = b · h³ / 3
Explanation: Integrating y² dA over a rectangle of width b and depth h from y = -h/2 to y = +h/2 gives I_Gz = b · [y³/3] from -h/2 to h/2 = b · (h³/24 - (-h³/24)) = b · h³ / 12. This is the standard moment of inertia for rectangular sections in flexure.
3A simply supported beam with a span of L = 6.0 m carries a single concentrated point load P = 12.0 kN at mid-span. What is the maximum bending moment M_max in the beam?
A.18.0 kN·m
B.36.0 kN·m
C.72.0 kN·m
D.9.0 kN·m
Explanation: For a simply supported beam with a central concentrated load P, each support reaction is R_A = R_B = P / 2 = 6.0 kN. The maximum bending moment occurs at mid-span (x = L/2 = 3.0 m) and equals M_max = P · L / 4 = (12.0 × 6.0) / 4 = 18.0 kN·m.
4A simply supported beam of span L = 8.0 m carries a uniformly distributed load q = 5.0 kN/m over its entire length. What are the vertical support reaction R_A and the maximum bending moment M_max?
A.R_A = 20.0 kN and M_max = 40.0 kN·m
B.R_A = 40.0 kN and M_max = 80.0 kN·m
C.R_A = 20.0 kN and M_max = 80.0 kN·m
D.R_A = 40.0 kN and M_max = 40.0 kN·m
Explanation: Total load on the beam is Q = q · L = 5.0 × 8.0 = 40.0 kN. By symmetry, the support reactions are R_A = R_B = Q / 2 = 20.0 kN. The maximum bending moment occurs at mid-span (x = 4.0 m) where shear force is zero: M_max = q · L² / 8 = 5.0 × 64.0 / 8 = 40.0 kN·m (or R_A · (L/2) - q · (L/2)² / 2 = 20 × 4 - 5 × 16 / 2 = 80 - 40 = 40 kN·m).
5A cantilever beam (poutre console) of length L = 3.0 m is clamped at point A and free at point B. A downward concentrated load F = 10.0 kN acts at the free end B. What are the magnitude of the clamping reaction moment M_A and the shear force V along the beam?
A.M_A = 30.0 kN·m (tension on top face) and V = 10.0 kN constant
B.M_A = 15.0 kN·m and V = 5.0 kN constant
C.M_A = 30.0 kN·m and V = 0 kN
D.M_A = 90.0 kN·m and V = 10.0 kN
Explanation: In a cantilever with an end point load, moment equilibrium about the clamped support gives M_A = F · L = 10.0 × 3.0 = 30.0 kN·m. Because the top fibers are stretched and the bottom fibers compressed, tension occurs at the top face (negative bending moment). The shear force is constant throughout the length: |V(x)| = F = 10.0 kN.
6According to Navier-Bernoulli beam theory for pure bending, what is the formula for normal stress σ(y) at a distance y from the neutral axis Gz?
A.σ(y) = (M_z · y) / I_Gz
B.σ(y) = (M_z · I_Gz) / y
C.σ(y) = (V_y · y) / I_Gz
D.σ(y) = M_z / (b · h)
Explanation: Navier's flexure formula states that normal bending stress varies linearly across the cross-section height: σ(y) = (M_z · y) / I_Gz, where M_z is the bending moment, I_Gz is the second moment of area, and y is the perpendicular distance from the neutral axis. At the neutral axis (y = 0), σ = 0; maximum stress occurs at the extreme fibers (y = ±v).
7A solid timber beam has a rectangular cross-section of width b = 200 mm and height h = 400 mm. It is subjected to a bending moment M_z = 80 kN·m. What is the maximum normal bending stress σ_max developed in the extreme fibers?
A.15.0 MPa
B.7.5 MPa
C.30.0 MPa
D.1.5 MPa
Explanation: The elastic section modulus of the rectangle is W_el = b · h² / 6 = 200 × (400)² / 6 = 200 × 160,000 / 6 = 5,333,333 mm³. The maximum bending stress is σ_max = M_z / W_el = (80 × 10⁶ N·mm) / (5.3333 × 10⁶ mm³) = 15.0 N/mm² = 15.0 MPa.
8Steiner's parallel axis theorem (Théorème de Huygens) is used to compute the moment of inertia I_z' of a plane area A about an axis z' parallel to its centroidal axis Gz at a distance d. What is the correct formulation?
A.I_z' = I_Gz + A · d²
B.I_z' = I_Gz - A · d²
C.I_z' = I_Gz + A · d
D.I_z' = (I_Gz + A) · d²
Explanation: Steiner's theorem states that the moment of inertia about any parallel axis z' equals the moment of inertia about the parallel centroidal axis I_Gz plus the product of the cross-sectional area A and the square of the perpendicular distance d between the two axes: I_z' = I_Gz + A · d². The centroidal axis always has the minimum moment of inertia.
9A concrete T-beam cross-section consists of a top flange measuring 200 mm wide by 40 mm thick, and a vertical web measuring 40 mm wide by 160 mm high (total section height H = 200 mm). What is the distance y_G of the centroid from the bottom base of the web?
A.135.6 mm
B.100.0 mm
C.150.0 mm
D.80.0 mm
Explanation: Divide the section into two rectangles: Flange 1 (top): A_1 = 200 × 40 = 8,000 mm², centroid y_1 = 160 + 40/2 = 180 mm from base. Web 2 (bottom): A_2 = 40 × 160 = 6,400 mm², centroid y_2 = 160/2 = 80 mm from base. Total area A = 8,000 + 6,400 = 14,400 mm². Centroid position y_G = (A_1·y_1 + A_2·y_2) / A = (8,000 × 180 + 6,400 × 80) / 14,400 = (1,440,000 + 512,000) / 14,400 = 1,952,000 / 14,400 = 135.56 mm ≈ 135.6 mm.
10For a beam with a solid rectangular cross-section of width b and depth h subjected to a shear force V, what is the maximum shear stress τ_max and where does it occur across the section depth?
A.τ_max = 1.5 · V / (b · h), occurring at the neutral axis (y = 0)
B.τ_max = V / (b · h), occurring at the extreme outer fibers (y = ±h/2)
C.τ_max = 2.0 · V / (b · h), occurring at the top flange
D.τ_max = 1.5 · V / (b · h), occurring at the bottom fiber
Explanation: According to Jourawski's shear formula τ(y) = (V · S*(y)) / (I · b), the first moment of area S*(y) is maximum at the neutral axis (y = 0) where S*_max = (b · h/2) · (h/4) = b · h² / 8. Substituting I = b·h³/12 gives τ_max = [V · (b·h²/8)] / [(b·h³/12) · b] = (12/8) · V / (b·h) = 1.5 · V / A. At the top and bottom free surfaces (y = ±h/2), S* = 0, so shear stress is zero.

About the Bac F4 Bénin Exam

The Baccalauréat Série F4 (Génie Civil) is Benin's secondary school leaving diploma in civil engineering and building construction, organized by the Office du Baccalauréat du Bénin (OBB) under the Ministère de l'Enseignement Supérieur et de la Recherche Scientifique (MESRS). Taught at technical lycées (such as Lycée Technique Coulibaly in Cotonou, Lycée Technique de Bohicon, and Lycée Technique de Natitingou), Série F4 trains future civil technicians, quantity surveyors, site managers, and university engineering candidates. The official examination is administered in French and combines written problem sets (RDM, Béton Armé, Métré et Étude de Prix, Procédé de Construction, Mathématiques, Sciences Physiques, Français), two mandatory 4-hour practicals (Projet d'Exploitation T.P. and Dessin Technique T.P.), and a second-group oral across five subjects. This practice bank provides 100 English-language multiple-choice questions with rigorous worked solutions, structural calculations, and construction engineering rationales.

Assessment

First group, per the OBB coefficient table for Série F4: PRATIQUE: Projet d'Exploitation T.P. (coeff 3, 4h), Dessin Technique T.P. (coeff 3, 4h). ÉCRIT: Français (coeff 2, 3h), Mathématiques (coeff 3, 4h), Sciences Physiques (coeff 2, 3h), Résistance des Matériaux (coeff 3, 3h), Béton Armé (coeff 2, 3h), Métré et Étude de Prix (coeff 2, 4h), Procédé de Construction (coeff 2, 3h) — Total 1 = 22 coefficients (440 points) — plus EPS (coeff 1) for 23 coefficients / 460 points. SECOND GROUP — ORAL: Philosophie (coeff 1), Anglais (coeff 1), Schémas et Technologie (coeff 1), Création et Gestion d'Entreprise (coeff 1), Législation du travail (coeff 1) — Total 2 = 5 coefficients / 100 points, open to candidates averaging 9.00 to 9.99/20, for a 28-coefficient / 560-point final total. The 2026 session sat 15–18 June. This bank is an English-language MCQ study adaptation; it cannot substitute for the practical exams or the oral.

Time Limit

23 hours of written papers plus two 4-hour practicals (Projet d'Exploitation and Dessin Technique), sat across the national session

Passing Score

10/20 (Weighted average >= 10.00 / 20; 9.00–9.99 qualifies for the second-group oral)

Exam Fee

5,000 XOF registration for Beninese candidates; 35,000 XOF for foreign candidates; plus 1,000 XOF for the relevé de notes and 2,000 XOF photo-scanning/form-printing for candidats libres (OBB note de service, 20 November 2025) (Office du Baccalauréat du Bénin (OBB) — Ministère de l'Enseignement Supérieur et de la Recherche Scientifique)

Bac F4 Bénin Exam Content Outline

Coeff 3, 3h written (~11% of total coeff)

Résistance des Matériaux (RDM)

Internal force diagrams (shear, bending moment, normal), section properties (centroid, moment of inertia, Steiner's theorem), flexural normal and shear stresses, beam deflections, and Euler buckling.

Coeff 2, 3h written (~7%)

Béton Armé

Limit state design (BAEL / Eurocode 2 fundamentals), material design strengths, pivot diagrams, flexural reinforcement sizing at ELU/ELS, shear reinforcement design, anchorage lengths, and compressed column design.

Coeff 2, 4h written (~7%)

Métré et Étude de Prix

Quantity surveying take-offs (earthworks, concrete volumes, formwork, rebar schedules), direct labor rates, equipment operating costs, and price sub-breakdowns (DS, FC, FG, CR, PVHT, coefficient K).

Coeff 2, 3h written (~7%)

Procédé de Construction

Shallow and deep foundations, bearing capacity, masonry systems, formwork and shoring stripping rules, concrete mix design (Dreux-Gorisse), workability (cône d'Abrams), admixtures, waterproofing, and movement joints.

Coeff 3 + coeff 3, 4h + 4h practical (~21%)

Projet d'Exploitation T.P. & Dessin Technique T.P.

Site layout planning (Plan d'Installation de Chantier - PIC), tower crane positioning, CPM/PERT scheduling and floats, architectural & structural drawings, rebar detailing, and topographic leveling (collimation & rise-and-fall).

Coeff 3 + coeff 2, 4h + 3h written (~18%)

Mathématiques & Sciences Physiques

Applied mathematics (geometry, trigonometry, vectors, differential equations, integration for centroids) and physics (fluid hydrostatics, Bernoulli equation, pipe flow rate, building thermal and acoustic insulation).

Coeff 2 written + coeff 5 oral (~25%)

Français & Second-Group Oral

Technical correspondence and site reports in French; oral examinations in Philosophie (1), Anglais (1), Schémas et Technologie (1), Création et Gestion d'Entreprise (1), and Législation du travail (1).

How to Pass the Bac F4 Bénin Exam

What You Need to Know

  • Passing score: 10/20 (Weighted average >= 10.00 / 20; 9.00–9.99 qualifies for the second-group oral)
  • Assessment: First group, per the OBB coefficient table for Série F4: PRATIQUE: Projet d'Exploitation T.P. (coeff 3, 4h), Dessin Technique T.P. (coeff 3, 4h). ÉCRIT: Français (coeff 2, 3h), Mathématiques (coeff 3, 4h), Sciences Physiques (coeff 2, 3h), Résistance des Matériaux (coeff 3, 3h), Béton Armé (coeff 2, 3h), Métré et Étude de Prix (coeff 2, 4h), Procédé de Construction (coeff 2, 3h) — Total 1 = 22 coefficients (440 points) — plus EPS (coeff 1) for 23 coefficients / 460 points. SECOND GROUP — ORAL: Philosophie (coeff 1), Anglais (coeff 1), Schémas et Technologie (coeff 1), Création et Gestion d'Entreprise (coeff 1), Législation du travail (coeff 1) — Total 2 = 5 coefficients / 100 points, open to candidates averaging 9.00 to 9.99/20, for a 28-coefficient / 560-point final total. The 2026 session sat 15–18 June. This bank is an English-language MCQ study adaptation; it cannot substitute for the practical exams or the oral.
  • Time limit: 23 hours of written papers plus two 4-hour practicals (Projet d'Exploitation and Dessin Technique), sat across the national session
  • Exam fee: 5,000 XOF registration for Beninese candidates; 35,000 XOF for foreign candidates; plus 1,000 XOF for the relevé de notes and 2,000 XOF photo-scanning/form-printing for candidats libres (OBB note de service, 20 November 2025)

Keys to Passing

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

Bac F4 Bénin Study Tips from Top Performers

1Master the core civil engineering cluster: RDM (coeff 3), Béton Armé (coeff 2), Métré et Étude de Prix (coeff 2), and Procédé de Construction (coeff 2) represent the foundation of technical problem solving.
2Practice drawing shear force (V) and bending moment (M) diagrams for various load combinations, and memorize standard second moment of area formulas (b*h^3/12) and Steiner's theorem.
3Thoroughly understand BAEL / Eurocode 2 limit state combinations (1.35G + 1.5Q for ELU, G + Q for ELS), pivot diagrams (Pivots A, B, C), and flexural reinforcement formulas.
4Review quantity take-off conventions (foisonnement, compactage, concrete volumes, rebar weights) and the hierarchy of cost estimation: Déboursé Sec (DS) -> Coût de Revient (CR) -> Prix de Vente Hors Taxes (PVHT).
5Rehearse site layout planning (crane interference, safety zones) and critical path scheduling (PERT/CPM, float calculations) for the Projet d'Exploitation practical.

Frequently Asked Questions

What is the focus of the Baccalauréat Série F4 in Benin?

Série F4 (Génie Civil) is Benin's technical secondary stream specializing in civil engineering, building construction, and public works. It prepares students for technician careers and higher education in civil engineering faculties (such as EPAC at UAC, INP-HB Yamoussoukro, and 2iE Ouagadougou).

Is the official Benin Baccalauréat Série F4 multiple choice?

No. The official examination organized by the Office du Baccalauréat du Bénin (OBB) is conducted in French and consists of comprehensive written technical problem sets, engineering design and drawing practicals, and an oral examination. This practice bank is an English-language MCQ study adaptation designed for conceptual review and calculation practice.

What practical exams are compulsory in Série F4?

Série F4 includes two mandatory 4-hour practical examinations in the first group: Projet d'Exploitation T.P. (coeff 3) focusing on site organization, crane radius, and construction scheduling; and Dessin Technique T.P. (coeff 3) covering architectural plans, structural sections, and reinforcement detailing drawings.

What is the passing score and grading structure for Série F4?

The examination is graded on a 0–20 scale. A weighted average of at least 10.00/20 in the first group grants admission (admis). Candidates with an average between 9.00 and 9.99/20 are declared admissible to the second-group oral (Philosophie, Anglais, Schémas et Technologie, Création et Gestion d'Entreprise, Législation du travail). Below 9.00/20 is ajourné.

What are the total coefficients in Série F4?

The first group comprises 22 coefficients across 9 subjects (Projet d'Exploitation 3, Dessin Technique 3, RDM 3, Mathématiques 3, Béton Armé 2, Métré 2, Procédé de Construction 2, Sciences Physiques 2, Français 2) plus EPS (1) for 23 coefficients / 460 points. The second-group oral adds 5 coefficients / 100 points, resulting in a total of 28 coefficients / 560 points.