주기사항
영문초록 : The Study is to carry out proporting of singly reinforced concrete slabs of one way slabs and two way slabs basedon both working stressed design theory and theory of Ultimate stressed design for the minimum cost design. Cost objective fuction for minimizing the construction cost is obtained by considering the cost of steel, concrete and forming. And the design constraints used are the flexural moment, the underreinforced steel ratio, minimum depth, minimum stoel deflection, and two way slabs used are sort span direction and long span direction, respectively Since some of design constraints are constituted non-linear programming problems. they are transformed into the set of successive linear programming problems using the Taylor series expansion and solved by using computer. By the numerical example, the optimum proprtioning of reinforced concrete slabs, economics beteween WSD and USD, conventional design and optimum design is studied.