JavaScript must be enabled in order to use this site.Please enable JavaScript in your browser and refresh the page. RR 22.04.00-3.4 IS 1893 2015 Part 4 Response Spectra The program can now add response spectra loads per IS 1893 2015 (Part 4) Industrial Structures Including Stack-Like Structures. Parent topic: RR 22.04.00-3 Features Affecting the Analysis and Design Engine Related referenceTR.32.10.1.9 2015年版IS:1893(パート4)に従った応答スペクトル仕様