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Green Building Bible, Fourth Edition
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    • CommentAuthorgravelld
    • CommentTimeJun 8th 2017 edited
     
    I'm haphazardly trying to learn how to import BIM objects into SketchUp.

    I imported this component: https://www.nationalbimlibrary.com/internorm-windows-uk-ltd/hf-210-timber-and-aluminium-window-home-pure

    I thought you could edit attributes, e.g. glazing area, colours etc. But there's no obvious attributes to change. I can see "Component Options" but editing these doesn't appear to make any difference and besides they don't include the kind of things I want to change.

    You can of course stretch the component to the right size but this mucks up the proportions. And I can't work out how to change the colour without editing the component and laboriously changing every single face.

    Is this just a crap object not offering enough customisation? In which case, anyone know any better objects? I'm looking for modern style alu windows.
    •  
      CommentAuthorfostertom
    • CommentTimeJun 9th 2017
     
    You're hoping for 'parametric' BIM objects, which are few and far between, and poss (I don't know) only functional in top-end CAD.
    • CommentAuthorgravelld
    • CommentTimeJun 9th 2017
     
    Yeah, I had a slightly different query on the SU forums which confirmed as much and, just to be explicit, SU is not "top-end CAD".

    Instead, you have to "explode" or ungroup the component and make the dimensional changes manually.

    It's a real pain with materials/colours because of the number of different surfaces.

    Does anyone know of an object library that's easier to work with?
    •  
      CommentAuthorfostertom
    • CommentTimeJun 9th 2017 edited
     
    Aware of https://www.bricsys.com/en-intl/bim ? - "SketchUp for dwg users" - like Autocad but Direct Modeling and PushPull to the max make 3D a doddle - and fully accurate/dimensional, unlike SU.
    New BIM module becoming full-featured - any dwg solid can be BIM-attributed, so fundamentally unlimited and streets ahead of all the others.

    I found SU so locked to rectilinear, got in a complete tangle as soon as real-world off-angle elements creep in. And ambiguity with any level of complexity. And impossible to keep the model 'clean' i.e. without undetectable redundant lines etc.

    I found SU works beautifully with simple, rectilinear, clean models, but falls apart in 'real' work.
    •  
      CommentAuthorfostertom
    • CommentTimeJun 9th 2017
     
    https://sketchucation.com/plugin/1341-3pt_window
    • CommentAuthorgravelld
    • CommentTimeJun 9th 2017
     
    That does actually look quite close to the flush closing style in modern windows (I'm only interested in external appearance for this modelling). Thanks.
    • CommentAuthorcjard
    • CommentTimeJun 9th 2017
     
    gravelld, you don't need to explode or ungroup, just double click into the component to switch context. use the highlight and move tools to highlight eg the entire right hand part of the frame then drag it to a new width. use a tape measure line to place ahead of time the width or snap it to an existing opening using inferences. be careful what direction you drag your selection box in - down/right is select-within, up/left is select touching;you prob want the former

    tom, su never seemed overly rectilinear to me and its dimensionally perfect so llong as you type the dimensions in as you draw. if your model ends up with occluded crap(facets/dges)its because you were a bit sloppy with your drawing; draw only lines that should be there, make heavy use of the inference engine, pull geometry relative to other entities, group wisely and ensure you aren't treating the layering system as though it were photoshop. ave the outliner open permanently
    • CommentAuthorcjard
    • CommentTimeJun 9th 2017
     
    oh, and ensure your style is architectural/showing endpoints so you can see where you've introduced too many nodes to a path
    •  
      CommentAuthorfostertom
    • CommentTimeJun 10th 2017
     
    Perhaps I should get some training from you - certainly fluency in SU would be useful.
    • CommentAuthorcjard
    • CommentTimeJun 10th 2017
     
    I'm flattered, though I'm no Aiden Chopra! I understand perfectly what you mean from the first time I drew my house; the model was well over 100mb and I saw the message "your recent operation caused visible geometry to merge with hidden geometry on another layer" countless times.. it'd crash often and there were tens of millions of edges in the model. I scrapped it and started over after getting my head round layers and grpups and the new model of the same thing (with more detail) is just 7mb

    I was very surprised to find out SU uses inches internally.. weirdo americans.. but perhaps the most important thing for anyone drawing in SU is to use the keyboard as much as the mouse; type every dimension and really get on board with the power of the dimensions box..
    •  
      CommentAuthorfostertom
    • CommentTimeJun 10th 2017 edited
     
    That (first para) reings a bell! There was some add-on utility I used constantly and excessively to eliminate duplicates - but many remained, undetectable.

    I find in CAD that often I don't know dims by number; I need to extend or trim some solid to a line or plane projected at maybe a funny angle from some other solid, with total accuracy. I think I remember that's the kind of thing I mean, that SU doesn't handle - or will you say 'that's inferencing'?
    • CommentAuthorcjard
    • CommentTimeJun 10th 2017
     
    Sounds like it.. stuff like, if I'm drawing a line in su, and I want it to be parallel with another line, i "stroke" that other line for a while, and then make a guess at where to draw my line so it's parallel.. when it goes pink SU is making it parallel. There are also ways of selecting lines and planes and manipulating them wiht he move tool so that they extend but stay in plane/on vector. It's also occasionally helpful too draw some geometry just to align stuff, and then delete it again. The tape tool can also be helpful, if you double click it on a line it will extend a guide to infinity parallel with the line. If you hen want to e.g. Extend a beam so it cuts off relative to the hide, start pulling the beam, but touch the guide with your mouse

    One of the things that took me a while to get is that it really can make a huge difference where you grab something when you want to move it. Example, if you want to place an imported chair model on the flor, be sure to grab the chair by the lowest point of one leg.. SU's inference and snapping engine will try and snap he point you grabbed he chair with, to the plane of the floor, hence it be critical where you're holding the chair...
    • CommentAuthorMackers
    • CommentTimeJun 13th 2017
     
    I use 3D daily and SU is by far the best. You can create dynamic components very easily and there are tons of plug ins to achieve what you want. Its far better than Revit that I use daily.

    Check out Nick Sonder.
    • CommentAuthorgravelld
    • CommentTimeJun 13th 2017
     
    Thanks guys, making progress on my models now. Any more tips gratefully received though.
    •  
      CommentAuthorfostertom
    • CommentTimeJun 13th 2017 edited
     
    Posted By: MackersSU is by far the best
    Do take a look at Brics, as above - Autocad on steroids! Though, as it happens Autocad-style Dynamic Blocks is about the only thing it can't do.
    Especially, Brics approach to BIM is quite unique.
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