sistem 4dSaputra & Abma – 123Penerapan BIM 4D dalam perencanaan penjadwalan pada pekerjaan struktur jembatan (sumber: BIM Essential Guide for Structural Consultant, BCA Singapore,Caries staging and activity assessment is the second essential step in the 4D-cycle for effective and personalised care. It builds on the knowledge acquired from the 1 st D. The aim is to