OSArch Community

Don't make the same big mistake as proprietary software

  1. J

    if someone checks the wiki, there you will find a lot of great open-source software, but 95% of that software made the same mistake that privative software, the format, you can not create a fluid workflow between those programs, you need convert, re-convert, draw, re-draw, again and again, increasing time and cost to our project, and making the design process too painful.

    please, developer and designers, adopt IFC BFC standards, in all areas, or at least let us import-export to one single format like csv or txt.

  2. M

    @jtm2020hyo thanks for the concern. You are absolutely right that we should adopt open data standards. You will find that both FreeCAD and the BlenderBIM Add-on are implementing both IFC and BCF to a high standard. In fact, you will find that the free software implementations of IFC surpass the proprietary ones in quality and breadth of support. We are also working on IFC and BCF bridges. For example, there is a Perl based IFC library, there is IFC translation to Code_Aster for structural simulation, and I'm doing IFC to Radiance.

  3. J

    @Moult said:

    ...IFC to Radiance.

    take all my money...

    ... actually I just found very good improvements for Architecture and Construction since IFC implementation, but what about MEP? do you know any software open source specialized in MEP that accepts import-export IFC or similar?

  4. C

    @jtm2020hyo said:

    ... actually I just found very good improvements for Architecture and Construction since IFC implementation, but what about MEP? do you know any software open source specialized in MEP that accepts import-export IFC or similar?

    We need to create one. Import/export for geometry is supported in Blender BIM addon and FreeCAD. Now we need something similar to archipack for duct/pipes works and a good flow engine running in background and import/export correctly via IfcDistributionPort etc…

  5. M
  6. Y

    I'd also be more than happy to help having a MEP module in FreeCAD. But, as it's not exactly my field, weeneed MEP people to help drafting how such a module should be, what tools it needs, what workflows you should achieve with it, etc

  7. J

    @Cyril @Moult @yorik

    TL;DR

    A good MEP design, IMHO, is about connections between 3D lines with MEP objects, add properties to MEP objects and lines, do analysis with exported properties data, convert that lines and MEP object to 3D model, do simulations, do diagrams, layouts, documentation, project management, budget, not in that order, and if necessary to do corrections, repeating all steps; 3D modeling is just one step, for this motive a good architecture design software is not necessarily good for MEP, for the same motive I will do not talk about LibreCAD 3, Blender and FreeCAD at least for now. And finally, the goal to reach is obviously to do all processes using IFC BCF formats, since Design until Documentation and everything with Open Source Software, that is my MEP dream.


    Suggestion:

    For Design, take as an example Circuit Pro - AutoCAD Plug-in, focused for Electrical Plan Design but the same tools work for Mechanical and Piping / Plumbing Plan Design: https://www.youtube.com/c/MustafaAbdelBaset/videos ; optional is Payazed RevCAD AutoCAD plug-in and UsE AutoCAD Plug-ing.

    For 3D modeling, take as an example AutoCAD MEP, convert lines to 3D models just take 2 steps

    For Diagrams, take as an example AutoCAD Electrical, this program can generate automatic diagrams similar to Excel and Visio

    For add properties to MEP objects and lines, take as an example AutoCAD Architecture, Property Set Definitions, and Schedule tables are awesome features.

    For Layouts creation, take as an example AutoCAD Architecture and MEP, their Model View feature is very useful and easy to use.

    For analysis, I use Excel and LibreOffice Calc for electrical analysis, but the internet says that Etab, MatLab, and Octave are the best here.

    For Project Management, take as an example AutoCAD Architecture and MEP, SheetSetManager is very useful.

    For budget, I use S10 (Peruvian ERP software), but a better ERP Open Source software focused on BIM is PyERP ,that was based in Odoo with a module called BIM 2.2.

    For documentation, LibreOffice, very known, does not need a presentation.

    For simulation, every program that accepts IFC is ok, as Dialux, Radiance, etc, for simulations in other programs that do not accept IFC is hard to use.

    For corrections, we need an automatic process, is very hard to do the correction without doing everything again, each element affects other elements and all elements affect their environment.


    Here one more fast complete review for the best MEP tools with pros and cons:

    AutoCAD MEP

    pro:

    Property Set Definitions can do everything

    convert lines to Cable Tray, Ducts, Conduit, Pipes.

    support export IFC for lighting analysis

    export-import to .xlsx, .csv, .txt without plug-in

    synchronize multiple files

    bases in AutoCAD Vanilla and AutoCAD Architecture

    Multi-View windows for the same element

    easy creating of layouts

    project navigator is decent

    Support BOM tables

    Support Elevation and Section views

    very good tools for annotations thanks to AutoCAD Architecture

    cons:

    Development stuck in 2013

    Autodesk Electrical Project Database format is encrypted no reason, easily replaceable with use CSV or TXT formats

    Autodesk Electrical Project Database is not compatible with AutoCAD Electrical

    A lot of not fixes bugs

    Their features development stuck in 50% for each specialty

    project navigator have bug unsolved since 2013

    SheetSetManager can not be renumbering for default

    SheetSetManager does not add a field to the total of layouts

    Can not plot to DWG

    apparently Autodesk is trying to kill AutoCAD

    do not support Dynamic blocks

    do not support block with Attributes definition

    AutoCAD Electrical

    pros:

    perfect one-line diagram

    perfect two-line diagram

    perfect tri-line diagram

    allow import .xlsx for automatic drawing

    good integration with AutoDesk Inventor

    support 3D automatic drawing

    support a lot of PLC components

    cons:

    AutoCAD Electrical formats are not compatible with Autodesk Electrical Project Database (ACAMEP)

    hard to use

    poor documentation

    apparently Autodesk is trying to kill AutoCAD

    do not support Dynamic blocks

    do not support block with Attributes definition

    Autodesk Inventor

    Pros:

    Good integration with AutoCAD Electrical

    create panels automatically since AutoCAD Electrical

    Semi-Integrations with AutoCAD MEP for Cable Tray Design

    useful for animations

    Cons:

    Hard to use

    Circuit Pro - AutoCAD Plug-in

    https://www.youtube.com/c/MustafaAbdelBaset/videos

    pros:

    correct design

    easy drawing with lines

    the best for design drawing

    free trial

    if someone wants to create a tool, this plugin is a good reference

    export to excel for calculation

    support export-import to Dialux

    use open source scripts (AutoLISP)

    support easy one-line diagram

    cons:

    errors in the code

    merge outdated and updated code

    not support for AutoCAD MEP

    not 3D drawing support

    apparently Autodesk is trying to kill AutoCAD

    poor documentation

    use encrypted source scripts (VLX)

    need more tool

    Payazed - AutoCAD Plug-in

    pros:

    good lighting design

    good documentation

    free trial

    use open source scripts (AutoLISP)

    cons:

    apparently Autodesk is trying to kill AutoCAD

    use own tool but incomplete features

    UsE - Elektrotechnisch buro 2H - AutoCAD Plug-in

    pros:

    intelligent drawing lines tools

    automatic wiring

    use Attribute Definitions as a master

    Cons:

    developer does not

    not support for AutoCAD MEP

    no 3D drawing support

    apparently Autodesk is trying to kill AutoCAD

    use encrypted source scripts (.dll)

    KiCAD

    pros:

    a better option than Autodesk Eagle

    integration with FreeCAD

    good documentation

    Open Source

    cons:

    do not support export-import to XLSX, CSV, TXT or similars

    unsolved bug

    Dialux

    Pros:

    support import-export IFC

    easy usage for analysis

    fast presentation creation

    Cons:

    hard to draw some architecture

    Other Software Open-Source and Privative for MEP:

    some software is not mentioned because have an incompatible format or poor documentation or their tools are not specialized for MEP.

    more tool reviews will be added in the future.

  8. J

    @Cyril @Moult @yorik

    https://forums.autodesk.com/t5/autocad-mep-forum/limits-in-property-set-definition-functions/m-p/9540159#M40400

    I forgot to mention something, as Keith.Brown mentioned "serialize data to a JSON file and then compress the file and store it on the object itself similar to property sets" this for "calculations externally" this because " Property sets are a nice way to share information with external programs such as Navisworks as the format is universal, but for a large storage medium they are not good"

    ...Keith.Brown is the best referent that I know for MEP design, basically what I understand is that JSON is better for biggest projects because is unexpected fastest that AutoCAD MEP languages, probably development your app in Java are the way to follow.

    ... and as he mentioned, integrate c#, vb.net, or even LISP and AutoLISP might be the best way to integrate a program to multiple services, including the cloud (BCF API).

  9. J

    @Moult said:

    @jtm2020hyo sorry, I didn't quite understand your post - are you proposing something? Both Blender and FreeCAD have bindings to Python, which allow integration to external services. I hope that helps. Are you referring to property set definitions in IFC? If so, I believe no Autodesk product has support for it.

    according to Keith.Brown I understand that any object, included IFC, can be converted to JSON, java is recommended because apparently is unexpected better optimized for CAD.

    Property Set Definition are just Custom Properties inside Objects, for example, wall, pipes, device, etc, and can be used for calculation, create diagrams, annotations, tables, etc.

  10. M

    @jtm2020hyo sorry, I didn't quite understand your post - are you proposing something? Both Blender and FreeCAD have bindings to Python, which allow integration to external services. I hope that helps. Are you referring to property set definitions in IFC? If so, I believe no Autodesk product has support for it.

  11. J

    ...and you are right @Moult AutoCAD and Revit have partial support for java, for that Keith suggests learn such mentioned languages. the reason that Java is "better" because size file is smallest that others, I mean small sizes = fastest calculation and drawing.

    ... our python apps could add support for java.

  12. J

    ... Java in AutoCAD is used for PDF.

  13. J

    here a link for better documentation:

    https://df-prod.autocad360.com/jsapi/v3/docs/contents.html

    here a sample: