Efficiency and quality of working in BIM
Workflow is of great importance in managing road and railway infrastructure design in BIM.Efficient workflow and efficient coordination activities improve design quality, contain design and modeling costs, and reduce errors during construction.
Work in BIMMaximum efficiency is achieved by integrating design, geometric-informative modeling, information exchange and analysis and verification activities in a single activity. The use of software tools that integrate these different activities in a single platform is the main tool for obtaining an efficient workflow.
The main workIn the design of the workflow the first and most important element that must be considered is which is the main work and which are the ancillary works. The main work defines the choice of software that manages it both in design and in management and which must be able to manage models of ancillary works. The main work determines whether we are in horizontal or vertical BIM.
Horizontal BIM and Vertical BIMHorizontal BIM (Infrastructure) is very different from Vertical BIM (Buildings) and requires very different workflows and tools. Among the most important differences between the two types of BIM we find:
INFRASTRUCTURES / HORIZONTAL BIM
BUILDINGS / VERTICAL BIM
|Design using axes, profiles and cross sections||Design using objects and parametric elements|
|Model based on parametric extrusions and little on objects||Model based mainly on objects (object libraries)|
|Use of the terrain as a fundamental element for design||Use of terrain as a marginal element in design|
|Large extension of the model||Medium-small extension of the model|
|Interchange formats specific to infrastructures||Interchange formats specific to buildings|
Interchange formatsThe exchange of information for infrastructures requires the transfer of specific information of the infrastructures world. The formats that can be used are:
WorkflowsTwo workflows are most commonly used:
Modeling-based BIM workflowWorkflow widely used in pilot projects. Design and modeling are separate and architectural or neutral software is used for modeling. It is a workflow with many criticalities that can only be used in the 'Pilot Project' phase as it involves the re-entry of information and the creation of the information model on a non-infrastructural software.
Design-based BIM WorkflowOptimised flow for design activities in BIM. Workflow where modeling occurs concurrently with design. Infrastructure design software simultaneously performs information geometric modeling.
Take part in the SierraSoft Workshops on BIM WorkflowSierraSoft periodically organizes free online workshops entitled “Work in BIM: Design, workflow and coordination for road infrastructures”. The workshops are constantly being reviewed to provide the state of the art on the subject. For more information about these workshops send an email to firstname.lastname@example.org.