Apilot case study of a perf { )rmance based flre safety design method was carried out . This methed intends to give more flexibility in building design , wilho 凱 changing the level of safety that is implied in the current building stundard law ( BSL)of Japan, The comf ( )rmunce verificatio囗 was made 10 each perfbrmance criteria using simp ] e evaluation fbrmula . in doing so , practical design would be feasible . The method was app ] ied to a fbur s[ oried muld tenan[offlce building with atria

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... By app ] ying this design method 、 rationai and possibly economical design solutjons were derived . One exumpie isthat the fire shutters around the atrium could be removed by accounting f ( 〕r Lhe possibility of fire spread 【 oward the upPer floor through atrium .