Dear readers,
This is the 31st issue of e-ZBORNIK, Electronic Collection of Papers of the Faculty of Civil Engineering. This issue, like the previous ones, is published in Croatian and English and consists of six papers. This issue brings out scientific and professional papers dealing with various topics from civil engineering, architecture, geodesy, environmental protection, but also from the field of mathematics.

e-ZBORNIK can be found in the journal databases EBSCO, Hrčak (https://hrcak.srce.hr/e-zbornik), DOI (CrossRef), DOAJ (Directory of Open Access Journals), and ROAD.

With the aim of supporting and promoting (diamond) journals that meet the currently applicable Hrčak criteria, an evaluation of journals in Hrčak was carried out in the previous period, and certification labels were awarded in accordance with the results. The journal e-ZBORNIK met all certification criteria and was awarded two certification labels:

• Compliant with Hrčak criteria
• Diamond Journal

In the previous period, activities related to the inclusion of e-ZBORNIK in the Scopus journal database were carried out and the evaluation process is in progress.

As the editor, I would like to thank the editorial board members, authors, and reviewers for the successful cooperation during the realization of the 31^st issue of e-ZBORNIK and I look forward to our future cooperation.

I invite all interested authors to submit their papers for the 32nd issue, which is expected to be published in December 2026.

Yours faithfully,

Danijela Maslać
e-ZBORNIK Editor-in-Chief