A Comparative Study of Span to Depth Ratio of Post-Tensioning Slab with Band Beam or Band Slab

his paper aims to find the optimum thickness for post tensioned band slab with span to depth ratio using the polynomial optimization method. In this study, width of the band slab was 6 meters. The span length of the floor slab in each case was 8 to 15 meters. The value of live load was 1.92 𝑘𝑁/𝑚ଶ which depending on residential usage function. In addition to the weight of the floor itself, the superimposed dead load such as 2, 3, 5, 8, and 10 𝑘𝑁/𝑚ଶ
were taken into account in analysis process. The results of the design are then used to find the appreciate thickness using polynomial optimization method to provide information for engineers to guide the design and estimate the cost. For residential, post tensioned band slab is suitable ratio of span length to slab’s optimum thickness are 38, 35, and 32, respectively
Keywords: Band Slab; Post-tensioned concrete; Band beam; Optimum thicknesses.