Cameroon Baccalauréat Série F4 Practice Questions - Cameroon Baccalauréat Technique Série F4 (Génie Civil) Exam

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What is the design compressive strength of concrete $f_{bu}$ at the Ultimate Limit State (ELU) under BAEL 91 for characteristic 28-day cylinder compressive strength $f_{c28} = 25\text{ MPa}$ under persistent actions (safety factor $\gamma_b = 1.5$ and coefficient $\theta = 1.0$)?

14.17 MPa (f_bu = 0.85 · f_c28 / (θ · γ_b)) 16.67 MPa 25.00 MPa 18.75 MPa

Correct Answer:

14.17 MPa (f_bu = 0.85 · f_c28 / (θ · γ_b))

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