In this paper, optimum design of three-dimensional (3D) multi-story reinforced concrete (RC) structures is obtained using an improved version the plasma generation optimization (IPGO) algorithm. The reinforcing bars and geometry cross-sections are considered as discrete variables that chosen from a prearranged section database. objective function cost framework, steel concrete. moment shear fra...

Abstract Building infrastructure always chooses to use strong materials, low costs, easy maintenance and easily available materials. One of these materials is normal concrete which one the making using Portland cement. The process cement can cause damage environment due greenhouse emissions, so research needed create environmentally friendly concrete, geopolymer concrete. In there still not too...

BACKGROUND It is recognized that socioeconomic status (SES) has a significant impact on health and wellbeing; however, the effect of SES on suicide is contested. This study explored the effect of SES in suicide deaths and decomposed inequality into its determinants to calculate relative contributions. METHODS Through a cross-sectional study, 546 suicide deaths and 6,818 suicide attempts from ...

An experimental investigation of the performance reinforced concrete continuous slabs is presented in this paper, following exposure to different compartment fires. The influence that several factors, including fire scenarios, reinforcement ratio, and bar arrangement, have on deflections, strains, crack patterns, failure modes analysed. Results compared uniform case, localized or extended punch...

Abstract On June 24, 2021, a 40-year-old reinforced concrete flat plate structure building in Miami suffered sudden partial collapse. This study analyzed the overall performance and key components of collapsed based on design codes (ACI-318 GB 50010). Punching shear post-punching performances typical slab-column joints are also studied through refined finite element analysis. The collapse proce...

UNLABELLED Articular cartilage defects have been addressed using microfracture, abrasion chondroplasty, or osteochondral grafting, but these strategies do not generate tissue that adequately recapitulates native cartilage. During the past 25 years, promising new strategies using assorted scaffolds and cell sources to induce chondrocyte expansion have emerged. We reviewed the evolution of autolo...

Genetic algorithm (GA) and differential evolution (DE) are metaheuristic algorithms that have shown a favorable performance in the optimization of complex problems. In recent years, only GA has been widely used for single-objective optimal design reinforced concrete (RC) structures; however, it applied multiobjective steel structures. this article, total structural cost roof displacement consid...

in this paper a new method based on strut-and-tie model (stm) is proposed to determine the shear capacity of simply supported rc deep beams and an efficiency factor for concrete with considering the effect of web reinforcements. it is assumed that, the total carried shear force by rc deep beam provided by two independent resistance, namely diagonal concrete strut due to strut-and-tie mechanism ...