چكيده به لاتين
Regarding the importance of the construction industry and the problems in this area, and on the other hand the unwillingness of engineers and employers to take the risk of the practical application of new systems and to compare conventional and new systems, various approaches have been provided for proper resource utilization and project time and cost management. One such approach is Building Information Modeling (BIM) that is now widely used in the buildings’ design, construction and operation steps. BIM is a three-dimensional and parametric visualization of a building and its concerned information which is applied in construction management sections including design visualization, building analysis, construction scheduling and sequence of operations, cost estimation, information integration, etc. In this research, different tools of BIM for estimating time and cost are introduced. Then, by identifying structural systems which are approved by the Road, Housing & Urban Development Research Center, the research scope is concentrated on time and cost estimation using BIM in a couple of structural systems including two types of frames (concrete and steel frames) with four types of floors (pre-stressed flat slab, metal-deck composite slab, beam and block floors, and hollow slabs). By choosing the case study building, the systems were modeled in 3D, then 4D model was produces by providing scheduling and integrating it with the 3D model, and next a 5D model is used to estimate the cost. Finally, these systems are compared in terms of time and cost.
