Open Source House with Open Source CAD?

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paullee
Posts: 2502
Joined: Wed May 04, 2016 3:58 pm

Re: Open Source House with Open Source CAD?

Postby paullee » Sat Aug 01, 2020 9:27 am

thschrader wrote:
Sat Aug 01, 2020 9:19 am
edit: (forgot text...)
at the moment we have 4 different layouts. Which one to use?
reliable_layout.JPG
thumbs_up.JPG
I just modify the model following PDF ridge setting-out - hope this is correct ... ( not by superimposing the image )
thschrader
Posts: 1767
Joined: Sat May 20, 2017 12:06 pm
Location: Germany

Re: Open Source House with Open Source CAD?

Postby thschrader » Sat Aug 01, 2020 11:27 am

paullee wrote:
Sat Aug 01, 2020 9:27 am
thschrader wrote:
Sat Aug 01, 2020 9:19 am
edit: (forgot text...)
at the moment we have 4 different layouts. Which one to use?
reliable_layout.JPG
thumbs_up.JPG
I just modify the model following PDF ridge setting-out - hope this is correct ... ( not by superimposing the image )
Ok, thanks. I use the new wall as reference.
This has an effect of the column-height in axis 1 (+180 mm, when pink/green axis in sketcher are set parallel).
new_wall_reference.JPG
new_wall_reference.JPG (60.13 KiB) Viewed 547 times

About statics/stability:
The outer prefabricated frames an the inner wall must act as a "shear-wall" to get stability of the wooden frame/roof.
The inner wall-panels a boltet to the middle-beam and the rebars in the floor.
I will run a statics calculation of the frame, lets see how it works with FC-FEM and my commercial software.
shear_wall.JPG
shear_wall.JPG (36.17 KiB) Viewed 547 times
paullee
Posts: 2502
Joined: Wed May 04, 2016 3:58 pm

Re: Open Source House with Open Source CAD?

Postby paullee » Sat Aug 01, 2020 11:57 am

thschrader wrote:
Sat Aug 01, 2020 11:27 am
This has an effect of the column-height in axis 1 (+180 mm, when pink/green axis in sketcher are set parallel).
new_wall_reference.JPG

About statics/stability:
The outer prefabricated frames an the inner wall must act as a "shear-wall" to get stability of the wooden frame/roof.
The inner wall-panels a boltet to the middle-beam and the rebars in the floor.
I will run a statics calculation of the frame, lets see how it works with FC-FEM and my commercial software.
shear_wall.JPG
Not sure if the figures I picked from the PDF are consistent indeed.

Hope to see something about FEM, I know nothing about this :)

And some update, adding door opening, windows, omission of concrete panels, re-dimension of stairs etc.

House_01_OpenSource.FCStd
(681.1 KiB) Downloaded 17 times
Screenshot from 2020-08-01 19-56-48.png
Screenshot from 2020-08-01 19-56-48.png (488.65 KiB) Viewed 539 times
thschrader
Posts: 1767
Joined: Sat May 20, 2017 12:06 pm
Location: Germany

Re: Open Source House with Open Source CAD?

Postby thschrader » Sat Aug 01, 2020 12:31 pm

paullee wrote:
Sat Aug 01, 2020 11:57 am
...
And some update, adding door opening, windows, omission of concrete panels, re-dimension of stairs etc.
...
adjusted wood-structure to new reference.
wood_structure_adjusted_01082020.ifc
(87.86 KiB) Downloaded 9 times
thschrader
Posts: 1767
Joined: Sat May 20, 2017 12:06 pm
Location: Germany

Re: Open Source House with Open Source CAD?

Postby thschrader » Sat Aug 01, 2020 3:57 pm

Some fun with FEM, calculating the wooden frame/roof.
Loading:
snow 75 kg/m^2 on roof, payload 200 kg/m^2 upper floor, no selfweights.
The beam under the upper floor with cross section 50x200 mm seems too weak.
(double the calculated stress of 5 MPa, in reality there are hinges at the ends)
Some walls are still missing... :)
Have a nice weekend.
FEM_wood_frame.JPG
FEM_wood_frame.JPG (337.56 KiB) Viewed 503 times
paullee
Posts: 2502
Joined: Wed May 04, 2016 3:58 pm

Re: Open Source House with Open Source CAD?

Postby paullee » Sat Aug 01, 2020 4:01 pm

thschrader wrote:
Sat Aug 01, 2020 3:57 pm
Loading:
snow 75 kg/m^2 on roof, payload 200 kg/m^2 upper floor, no selfweights.
The beam under the upper floor with cross section 50x200 mm seems too weak.
(double the calculated stress of 5 MPa, in reality there are hinges at the ends)
Some walls are still missing... :)
Looks interesting, need more explanation on the diagram please :D
paullee
Posts: 2502
Joined: Wed May 04, 2016 3:58 pm

Re: Open Source House with Open Source CAD?

Postby paullee » Sat Aug 01, 2020 4:07 pm

Model updated, incorporated Thschrader's latest model, added window clones, adjusted dispositions ...

House_01_OpenSource.FCStd
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Screenshot from 2020-08-02 00-01-31.png
Screenshot from 2020-08-02 00-01-31.png (499.69 KiB) Viewed 497 times
Screenshot from 2020-08-02 00-01-36.png
Screenshot from 2020-08-02 00-01-36.png (459.66 KiB) Viewed 497 times
Screenshot from 2020-08-02 00-05-41.png
Screenshot from 2020-08-02 00-05-41.png (312.49 KiB) Viewed 497 times
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thomas-neemann
Posts: 877
Joined: Wed Jan 22, 2020 6:03 pm

Re: Open Source House with Open Source CAD?

Postby thomas-neemann » Sat Aug 01, 2020 5:57 pm

does it make sense to try to plan the house on this site, a point cloud?
point clouds are used in my clientele.

example point cloud file
https://lvermgeo.rlp.de/fileadmin/lverm ... dell_B.zip


howto convert to stl
http://fabacademy.org/archives/2014/tut ... ToSTL.html
Attachments
Bildschirmfoto vom 2020-08-01 19-49-51.png
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johnwang
Posts: 420
Joined: Sun Jan 27, 2019 12:41 am

Re: Open Source House with Open Source CAD?

Postby johnwang » Sat Aug 01, 2020 9:24 pm

thschrader wrote:
Sat Aug 01, 2020 3:57 pm
Some fun with FEM
Do you have ways to calculate wind load?
thschrader
Posts: 1767
Joined: Sat May 20, 2017 12:06 pm
Location: Germany

Re: Open Source House with Open Source CAD?

Postby thschrader » Sun Aug 02, 2020 7:04 am

johnwang wrote:
Sat Aug 01, 2020 9:24 pm
thschrader wrote:
Sat Aug 01, 2020 3:57 pm
Some fun with FEM
Do you have ways to calculate wind load?
At work we use Eurocode 1 "Wind load".
more sophisticated: cfdof workbench.