79 B_sCE50_ipMF7_wL94_jHB200 0.35 257 ift Rosenheim Forschungsbericht Vibroakustik ift_Aufbau_1a_B_03 B_sCE50_ipMF7_wL94_jHB200 Trenndecke hollow box grid (HB) ift Rosenheim 1 Zementestrich M_sCE50 1 3 Akustic EP1 M_ipMF7 2 121 Splitt 5/8 M_wL94 3 8 Flächenelement M_jHB200 4