STRUCTURAL DESIGN OF G+2 APARTMENT BUILDING. CASE STUDY: GASABO DISTRICT/ GISOZI SECTOR

Abstract

The main objective of this research was to work out the structural design of a G+2 apartment building and a bill of quantity. To achieve these objectives, ArchiCAD software was used for the work out of the architectural design of the building, analytical method was done for the computation of the structural design (slab, beam, column, stairs, ramp and foundation), Prokon software was used for beam analysis, lumion was used for the generation of perspectives and the reinforcements were computed using European Standards (EUROCODE 2). The building consists of each floor rooms, stair and ramp for vertical circulation. The structural result obtained showed that slab has 150mm of thickness the required steel reinforcements should be laid in two-way direction at the top and at the bottom were ϕ10@150mm andϕ8@200mm, beams has 600mm height and 300mm breath of web, the required main steel reinforcements at the top and at the bottom were 4ϕ20mm and 4ϕ25mm, the columns has 400x450mm cross section, the required steel reinforcements were of 8ϕ20mm. Stairs steel reinforcements were 7ϕ12mm/m and 4ϕ12mm/m, for ramp beam the steel reinforcement found were 3ϕ12mm and 3ϕ12mm, ramp slab the steel reinforcement found were 5ϕ12mm and footing of 3.2x3.2x0.6m has been calculated according to the bearing capacity of 240KN/m2, steel reinforcement found were 8ϕ25mm and the cost of construction of proposed building was estimated (631,595,556Rwf).