We then work with the external component and rooms and eventually add a section to detail the model for construction documentation. We might include a full structured model based on solids, and MEP models if needed, though for MEP we usually stick to 2D plans on smaller buildings with small diameter piping and no HVAC systems. It may certainly not be the body representation context, though :) Just some 2 cents! It's like an extension of massing studies and it would also probably simplify studies like I think a wall without volume may be useful for early stage feasibility, topological analysis, energy analysis, structural surface members for structural analysis, and certain types of lighting analysis for glazed facades. The internal room's object with doors and openings: The external envelope with windows and doors: These rooms and façade, then get glueing/hole cutting components for openings, windows and doors (hole cutting components are not solid like in Blender, they can glue to a face and cut it, but cannot cut a solid): Here's basic model organization (each color is a different object): It would be ideal at least at an initial stage where building schematics are changing on interaction with stakeholders and this is pushing forward until construction documentation on my workflow. I wonder if this would be possible and if it would be possible to create a regular IFC file using this model organization, without further work on modelling or separating walls from roof and slab. The gap between them is the wall representation. I actually build no walls at all, just a collection of boxes that represent rooms. I'm wondering how much of that workflow is wrong if I'm making the move to OpenBIM and comply with IFC standards, and how much I have to change modelling processes.īasically, I have a working scheme where the façade is an envelope and the rooms are an interior volume. The only difference is accuracy and section detail. I'm trying to figure out how much of my practice needs to change as actually, right now, even in construction documentation stage, my work is similar to the work performed at a conceptual stage, with massing studies. Hi and and thanks for your continued input. I'll keep on posting my experiments and will stick to sketchup for now, if you don't mind, until I can do more stuff with other software.īest regards to all and thanks for your help so far. It would be great if someone could chime in and tell me if this looks right or if there's something strange. In the end I've imported the IFC file to BlenderBIM and it seems nice: You have to export using Jan Brawer's plugin or your component's names will be forgotten. Jan's plugin has a classification tool too, which has something related to Layers and Materials in it, which I will try later. You can click on the simplify button which complexifies the classification for other purposes besides architecture. You can use Sketchup Native classification and I found that the it is simplified in a streamlined way for architecture. I'll keep investigating how it's better structured as windows are sometimes glued to walls and inside them in Sketchup, but I'm guessing that will not work. So the outliner must have a component for a project, with a nested component for the site, with the building inside, storeys inside the building, windows in the storeys and I guess it keeps going on on for every other element. The only Sketchup objects that can be used are components. I started by structuring a very basic model as you would for an IFC file: The plugin is developed by Jan Brawer (Brewski whom I talked with a long time ago on Sketchucation), and has been trying, for ages to get to grips with BIM and Sketchup. The process I tried only worked using this plugin to export to IFC: It also seems we can use the IFC4 Schema if we want, but as the exporter is for IFC2x3 and broken it won't do any good. It seems broken the native exporter is broken. Sketchup has a native IFC 2x3 exporter, and a classifier tool with the IFC 2x3 schema built in. For me it might be the starting point for actual diving into a BIM workflow with the tool I work with. I hope this topic is useful for someone in the same path as me. I know it might be out of scope for OSArch as Sketchup is not opensource and not free anymore (for commercial use at least). I decided to step back a little and stick with what I know for now.
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