This study presents a systematic optimization methodology for minimizing lateral displacement in reinforced concrete (RC) high-rise buildings subjected to combined wind and seismic loading. Grounded in Smith–Coull frame–wall interaction theory and validated through three-dimensional finite element analysis (ETABS 2022), the procedure was applied to a representative 20-story RC structure (H = 72 m) in Thai Nguyen, Vietnam, designed per TCVN 2737-2023 and TCVN 9386:2012. A two-stage optimization strategy was developed: (i) maximizing the non-dimensional stiffness parameter.......

Keywords: RC high-rise buildings; frame–shear wall system; lateral displacement; stiffness optimization; ETABS; TCVN 2737-2023.

This paper proposes an integrated Building Information Modeling (BIM) and Data Mining model to improve the efficiency of high-rise building construction management.The model was implemented in practice on a 25-story high-rise apartment building with a total floor area of 32,000 m² in Thai Nguyen City, during a construction period of 24 months (January 2024 – December 2025).The actual construction data includes daily labor logs (a total of 1,642 workers-days during the floor slab concrete pouring phase), material costs for each structural item (total material value of VND 70.6 billion), actual progress compared to the EVM.......

Keywords: BIM; Data Mining; construction management; high-rise buildings; IoT; project progress prediction; construction costs; meteorology and hydrology.

This paper presents a comprehensive engineering philosophy for the design of flanged nozzle connections between pressure vessels and piping systems, focusing on the interaction between structural integrity, piping flexibility, thermal loading, and gasket sealing performance. Flanged nozzle interfaces are treated not as simple static pressure-retaining joints, but as deformation-sensitive systems whose reliability is governed by the combined effects of internal pressure, external piping loads, thermal expansion and contraction, bolt preload, and flange rotation........

Keywords: Flanged nozzle connections; pressure vessels; piping systems; piping flexibility; thermal expansion; thermal contraction; flange rotation; gasket sealing performance; nozzle loads; bolt preload; leakage prevention; pressure vessel design; piping stress analysis; structural integrity; flange joint reliability.