Dear readers,

This is the 23rd 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. e-ZBORNIK can be found in the journal databases EBSCO, Hrčak (https://hrcak.srce.hr/e-zbornik), DOI (CrossRef) and DOAJ (The Directory of Open Access Journals), and activities for its inclusion in other databases are in progress. Publishing rights, as well as those related to independent storage of texts, apply as described on the network of the Sherpa organization (RoMEO service), which is maintained at the University of Nottingham.

In bibliographic terms, the journal is identified by the following data: ISSN 2232-9080 (online edition) and DOI: 10.47960/2232-9080.
As the editor, I would like to thank members of the editorial board, authors and reviewers for the successful cooperation during the realization of the 23rd issue of e-ZBORNIK and I hope that the cooperation will continue in the future.

This issue brings out scientific and professional papers dealing with various topics in the field of civil engineering and other technical sciences. The topics treated are related to sustainable management of wastewater drainage system, evaluation of wastewater treatment plant performance by neural network model optimized by genetic algorithm, energy consumption for space heating of school buildings in the south region of FBiH, a review of geophysical processes monitoring in the area of western Herzegovina by satellite observations, analysis of the behavior of a two-story planar frame for different approach to soil modeling and a review of the reconstruction of Hotel President in Dubrovnik in 2013.

I would invite all interested authors to send their papers for the next 24th issue which is expected to be published in December 2022.

Yours faithfully,
Mirna Raič, Editor-in-Chief of e-ZBORNIK