EVALUASI CEPAT DESAIN ELEMEN BALOK BETON BERTULANGAN TUNGGAL BERDASARKAN RASIO TULANGAN BALANCED

Design procedure for reinforced concrete structure in Indonesia is provided by Tata Cara Perhitungan Struktur Beton, SNI 03-2847-2002. This code covers analysis method and basic assumptions that can be taken by a structural designer to design a reinforced concrete structure. An engineer has to design a flexural component, one of the structural component. One of the flexural component is beam element. SNI 03-2847-2002 adopt capacity design method in beam element design. This paper will be discuss a simple design procedure in beam element, based on ξ variable, which is ratio between ρ/ρb, with ρb is the balanced reinforcement ratio. The ξ value is limited to 0,75 maximum in SNI 03-2847-2002. A detail failure is guarantee in a beam element with ξ under 0,75. The analysis that have been done before, produce the correlation between Mn/bd2 and ξ, which can be a tool for design a beam element. A simple calculation use the table (Mn/bd2 vs ξ) will be present at the end of this paper.