Study on the Moment Change at Slab-Column Joints Due to Shear Wall’s Length Variations

A ten-storied building with length variations of shear walls, which are perpendicular to the lateral load acting on the building, has been studied here. The finite element based software, ETABS (version 9.6) has been used for determining the moment at different area objects due to the lateral load and Simpson’s one-third rule has been used to calculate the line moment from mesh area. Five different shear wall lengths- 4.5ft, 5.5ft, 6.67ft, 7.5ft and 8.5ft, are included here. The study shows that, moment in magnitude has been increased with the increasing of shear wall length but the percentage of total moment passed through the column strip is decreased and vice versa for middle strip. The moment in magnitude at column strip decrease by increasing of shear wall length but the optimum length will be 33% (approximate) of total span. The moment percentage of column strip moment passing through effective (c+3h) strip decreases by increasing of shear wall length.