Abstract In some concrete structures, openings are placed because of the need for several utility requirements. These could affect strength structural members. So behavior reinforcement (RC) cantilever slab containing and its effect is subject study. Opening shapes, numbers sizes main variables that have been studied in this research. Five RC slabs were cast tested; one without other four with ...

In the precast structures, optimization of structural elements is of great interest mainly due to a more rationalized way that elements are produced. There are several elements of precast prestressed concrete that are objects of study in optimization processes, as the prestressed joist applied in buildings slabs. This article inquires into cost minimization of continuous and simply supported sl...

This article presents the advantages and limitations of a recently developed Ultrasonic Guided Wave Leakage (UGWL) method in comparison to well-known Half-Cell Potential (HCP) their ability detect corrosion reinforced concrete (RC) bridge decks. research also establishes correlation between UGWL data chloride content RC slabs. Concrete slabs submerged 10% NaCl solution were monitored using both...

Exposure of reinforced concrete buildings to an accidental fire may result in cracking and loss the bearing capacity their major components, columns, beams, slabs. It is a challenge for structural engineers develop efficient retrofitting techniques that enable RC slabs restore integrity, after being exposed intense fires long period time. Experimentalinvestigation was carried out on twenty one ...

Diaphragms are a fundamental part of the earthquake-resistant system, and in terms rigidity, it is essential to transmit dynamic loads on base structure.Also, floor openings response buildings against progressive collapse issues that have received less attention.In this study, opening surfaces their positions potential steel moment-resisting frame (SMRF) were investigated according alternate lo...