This issue of the GPH-International Journal of Mechanical and Civil Engineering (e-ISSN 3050-967X) features research contributions published between July and December 2025. The articles in this edition highlight ongoing advancements in mechanical systems, structural engineering, construction materials, transportation engineering, and applied mechanics.

The July–December issue brings together studies that offer practical solutions, analytical approaches, and experimental investigations relevant to both industrial applications and academic research. The contributions reflect the journal’s commitment to supporting high-quality, peer-reviewed scholarship and promoting engineering innovations across global research communities.