Abstract:
The general objective of this research was to conduct a structural design of G+4 Residential
and Commercial Building at Kigali city, Gasabo district, Gisozi sector. It is the reason why
this research has been conducted to solve that problem. Different methods have been used for
well conducting this study such as analytical method for designing different structural members
like slab, beam, column, foundation, stairs and shear wall, different software’s has been used like
ArchiCAD 19, for providing architectural drawing of the Residential and Commercial Building
such including all plan views, sections, elevation and perspectives, ETABS have been used for
the structural design of beam, stair and shear wall by computing beam detailing. Prokon has been
used for the design of footing. This proposed building has total area of 797.5m2 with width of
27.5 m and length of 29 m, story height is 3.1m each. Bill of quantity has been calculated within
this study the results showed that the designed steel reinforcements to be arranged in slab were at
the top 10@200mm and 10@200mm at the bottom while for T beam designed steel
reinforcements were 5Ф16 at the top and 4Ф16 at the bottom. And for column the designed steel
reinforcements were 12Ф20. For the stair designed steel reinforcement were 12@250mm for
main, a shear wall design steel reinforcement was for longitudinal 12@200mm. The building was
well located therefore the expected result have been achieved. this project has been estimated to
the cost of 1,159,206,705 Rwf. The execution of this project would stimulate proper land use,
solve the problem of continuous demand of plot of land for Residential and Commercial
Buildings, which could be used for other human development activities.
