Which building information is best conveyed in 3D, and which still requires 2D?
◦ Which stakeholders need 2D drawings, and why has that not gone away?
- Architects, contractors, engineers, and more need 2D drawings to simplify explaining models during meetings and to have an easy way to sort information during building. 3D models are helpful, but in these scenarios, 2D drawings can be physically brought to sites/meeting rooms.
◦ Give an example of something in your building a 3D view fails to communicate.
- Dimensions can be difficult to show on a 3D model, but they are very clear on a 2D drawing.
The same location needs to be shown differently to different audiences.
◦ How would information at one spot be filtered for a client, a contractor, a code official and a fabricator?
◦ What is the risk of showing everyone the same view?
View templates enforce consistency across a set.
◦ What goes wrong on a real project when views are configured individually?
- Incorrect proportions or alignment can lead to serious problems during construction. Also, some of the client’s needs may be interpreted differently.
◦ Who should own the templates and standards, and why?
- The initial architect/designer should own the template at the start, since many design changes will likely be made on the client-to-architect end. Therefore, when they change something, people working on their versions of the model can adjust easily since they already have the template.
Your schedules pull information straight out of the model.
◦ How can schedules support procurement and model based estimating?
- They can help with how much of a material or component type the contractor would have to get from their supplier so that they can estimate the costs associated with that. Also, modeling can help with estimates of ground excavation and other estimates.
◦ What is the danger of a schedule that is accurate about the model but wrong about the building?
- Costs or material needs may be lower than expected and lead to cuts in profit for parties affiliated with the project. During construction, things can always go wrong, things can break, and more so it would be helpful to overestimate a bit to account for these errors.
◦ What did your calculated field reveal that the plans did not?
- It showed the total occupants by summing up the areas of each room and dividing them by their occupancy factors.
You published two versions and compared them.
◦ Why does version history matter more on a shared model than a personal one?
◦ If a consultant says their work was based on last week's version, what do you need to be able to tell them?
◦ When should a model be formally issued rather than just saved?