A master's thesis in the College of Engineering at the University of Basrah discussed (Investigation the shear capacity of hunched beams with web of opening made from recycled concrete) The thesis presented by the student Fakhriya Obaid Musa dealt with the study of the shear behavior of reinforced concrete beams of variable depth (RCHBs) using methods Experimental and digital. The experimental work was carried out by forming and testing fifteen thresholds: one Of these, fourteen were fixed depth reference thresholds and fourteen variable depth thresholds. The main variables that have been made Considered in this study are the type of aggregates in the concrete, the shape of the openings, and the angle of inclination. The dimensions of the complete samples are 1750 mm (length), 200 mm (width), and 300 mm (depth), , tested in shear by loading the forms at two points, the percentage of aggregate returned was 0% and 30% and 60% (as a percentage of total aggregate replacement), while the inclination angles were 6.34° and 9.46°. degree. Two shapes of openings were considered in this study: square openings and circular openings The area of each of them is (4560) mm 2. The objective of the thesis is to study the shear capacity of variable depth beams with slots made of reconcrete The thesis concluded that the curves linking the precipitation and the experimental and analytical load of the models have an acceptable level of similarity. The maximum difference was between the final load of the models that were examined by the Abaqus program The final load of the samples tested was 8.41%, and the maximum difference in precipitation was found From examination by Abaqus and examination by laboratory work it was 19.54%.
