Level of detail (LOD)
What is LOD?
In the world of BIM (Building Information Modeling), LOD can stand for "Level of Detail" or "Level of Development". It's a term used to describe the accuracy of a model.
First and foremost, the LOD highlights the model's reliability to all project stakeholders, thereby increasing their confidence in it. The more reliable the information in the model, the more likely it is to be taken up by project stakeholders. Information passes quickly from one person to another, and decision-making becomes faster.
The Level of Development (LOD) specification is a reference enabling structural engineering offices to specify and clearly state the content and reliability of building information models (BIM).
With a LOD 350 the model element is represented graphically in the model as a specific system, object or assembly in terms of quantity, dimension, shape, orientation, and interfaces with other building systems. Non-graphical information can also be attached to the model element.
LOD + BIM execution plan = savings
When we look at the cost breakdown of major construction projects, we see that, thanks to 3D software, the manufacturing phase is extremely efficient. Design and manufacturing together account for only around 15% of an average construction budget.
As a result, financial managers don't dwell on the design and manufacturing stages when considering how to cut costs. It's a fact that when problems are avoided, considerable savings are made. Customers and general contractors alike will receive quality offers at the best prices from subcontractors who know how to optimize their processes.
Rework is avoided because there are no RFIs. No delays, so no penalty charges. When general contractors start planning and ordering materials with incomplete information, this causes errors in orders. But with BIM execution plans and an LOD, you'll reduce your order volume by an average of 25%, and save money in the process.
LOD and risk management
Every contract must include a BIM execution plan. The BIM execution plan tells stakeholders what information will be delivered on specific dates, and which project teams will be able to use this information.
When the LOD is incorporated into the BIM execution plan and specified in the contract, project owners (public or private) are then able to demand a clear plan from the delivery team for the provision of information to stakeholders at every stage of the project.
The LOD is a key aspect in planning the transmission of information to stakeholders.
When actions are based on quality information, the construction process becomes less risky and more productive, information starts to flow quickly from one person to another and decision-making becomes faster. But if incomplete information spreads, the result will be questions and requests for further information, which can lead to reworking and rescheduling, with the associated costs and valid causes for project delays.
Three things you need to know:
1.ClassificationClassification indicates the content of BIM data and what it is used for.
2.TimelineDetermine who does what and when information is delivered.
3.LOD = The level of information included in the modelThe status indicates the reliability of the information. Note: The LOD shows the status of a particular detail.
Find out more about how constructible models make building more efficient
