Design Of A Two-Story Primary School Building

Abstract

This capstone project focuses on the structural design and cost analysis of a two-story reinforced concrete (RC) primary school building situated in Seismic Zone 3 of Bangladesh. The proposed land area 50,055 square feet & building with an approximate floor area of 9,151 square feet, accommodates eight classrooms, a teacher`s room, library, computer lab, head teacher’s office, waiting room, storeroom, and separate sanitation facilities for both male-female students and teachers. The design is done in accordance with the Bangladesh National Building Code (BNBC 2020) that governs structural safety, stability, and serviceability when the structure has gravity and seismic loads. ETABS 2020 was used to conduct the structural analysis in which the building was modelled as an Intermediate Moment Resisting Frame (IMRF) system. Reinforced concrete components such as slabs, beams, columns, and isolated footings were designed considering load combinations, material strength, and deflection limits. For example, 20mm diameter reinforcing bars were used in columns, while isolated footings were provided to safely transmit loads to the soil with a bearing capacity of 2,500 psf. Detailed structural drawings were produced in AutoCAD, and the Bill of Quantities (BOQ), material estimates, cost calculations were managed using Microsoft Excel and ASDIP Foundation was used to measure the footing dimension. The total estimated project cost is BDT 24,356,465with a projected construction period of 241 days.