Strength of materials, bridges and tunnels UTCB \ Strength of materials, bridges and tunnels Sef lucr. univ. dr. ing. Ovidiu Laurenţiu BOGDAN Sef lucr. univ. dr. ing. Adriana-Silviana CHITEZ Sef lucr. univ. dr. ing. Gheorghe-Andrei PRICOPIE Conf. univ. dr. ing. Elena TULEI