Rebar schedules for box culverts

A forum dedicated to the Arch module development
User avatar
yorik
Site Admin
Posts: 9688
Joined: Tue Feb 17, 2009 9:16 pm
Location: São Paulo, Brazil
Contact:

Re: Rebar schedules for box culverts

Postby yorik » Thu Apr 05, 2018 2:03 pm

Joel_graff wrote:
Wed Apr 04, 2018 2:12 pm
You can go to www.idot.illinois.gov, click on "Resources" at the top, then "Manuals and Guides"
Crazy... I still cannot access that address directly, but using a proxy it worked :? Some blocking operation somewhere...

Anyway, this is one more very good example of what we should aim for with Rebars + TechDraw...
Joel_graff
Posts: 507
Joined: Fri Apr 28, 2017 4:23 pm
Contact:

Re: Rebar schedules for box culverts

Postby Joel_graff » Sat Apr 07, 2018 3:02 pm

thschrader wrote:
Wed Apr 04, 2018 1:38 pm
No, because it is difficult.
In concrete engineering the structure (lets say a beam) is calculated at the limit state.
In the tension zone the concrete is cracked, you will need special programms to simulate
the cracks with FEM.
I'm generally unfamiliar with FEM, apart from doing manual matrix calculations in college... but a little searching turned up this document:

https://www.google.com/url?sa=t&source ... 9O6Qo[url]

It's a pdf published in 2001 by the Washington Department of Transportation on doing reinforced concrete FEM modeling. They used ANSYS and described the modeling process for a few cases, focused primarily on fiber-reincorced composites (FRP).

I expect the problem is quite complex to solve, but seeing this made me think it's not unapproachable. I see that the key to some of this is being able to specify different materials in layers...

Anyway, I'm generally ignorant of FEM structural workflows, though I have a good understanding of the math that's involved. I'd happily start another thread for it, if it seems like a worthy topic for more discussion.
User avatar
bernd
Posts: 5582
Joined: Sun Sep 08, 2013 8:07 pm
Location: Zürich, Switzerland

Re: Rebar schedules for box culverts

Postby bernd » Mon Apr 09, 2018 6:35 am

a much more simpler example in this regard can be found here: https://forum.freecadweb.org/viewtopic. ... 61#p135030

Rebar schedules would surely something very cool and would make FreeCAD useble for real reinforcement drawings.
User avatar
Kunda1
Posts: 2324
Joined: Thu Jan 05, 2017 9:03 pm

Re: Rebar schedules for box culverts

Postby Kunda1 » Mon Apr 09, 2018 11:00 am

amrit3701 wrote:ping
Hey @amrit3701 thought you may be interested in this thread ;)
Want to contribute back to FC? Checkout:
#lowhangingfruit | Use the Source, Luke. | How to Help FreeCAD | How to report FC bugs and features
Joel_graff
Posts: 507
Joined: Fri Apr 28, 2017 4:23 pm
Contact:

Re: Rebar schedules for box culverts

Postby Joel_graff » Mon Apr 09, 2018 12:45 pm

bernd wrote:
Mon Apr 09, 2018 6:35 am
a much more simpler example in this regard can be found here:
Implementing that is definitely a good place to start.
chakkree
Posts: 244
Joined: Tue Jun 30, 2015 12:58 am
Location: Bangkok Thailand

Re: Rebar schedules for box culverts

Postby chakkree » Wed Apr 11, 2018 2:42 am

I'm trying to create rebar schedule dialog(spreadsheet's like) using QTableWidget
Now, it cannot insert new rebar.
and Input rebar dialog has only 3 types.

RebarSchecdule01.png
RebarSchecdule01.png (202.29 KiB) Viewed 178 times
RebarShapeDataInput.png
RebarShapeDataInput.png (13.12 KiB) Viewed 178 times
RebarsSchedule_20180411.zip
(4.38 KiB) Downloaded 4 times
User avatar
bernd
Posts: 5582
Joined: Sun Sep 08, 2013 8:07 pm
Location: Zürich, Switzerland

Re: Rebar schedules for box culverts

Postby bernd » Wed Apr 11, 2018 5:39 am

How do I run this?
chakkree
Posts: 244
Joined: Tue Jun 30, 2015 12:58 am
Location: Bangkok Thailand

Re: Rebar schedules for box culverts

Postby chakkree » Wed Apr 11, 2018 6:15 am

bernd wrote:
Wed Apr 11, 2018 5:39 am
How do I run this?
1. Unzip RebarsSchedule_20180411.zip
2. open RebarScheduleSheet.py with FreeCAD
3. Ran macro.

It's not full function, for the first test.

-----------------------------
OS: Windows 10
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.17.13509 (Git)
Build type: Release
Branch: releases/FreeCAD-0-17
Hash: 0258808ccb6ba3bd5ea9312f79cd023f1a8671b7
Python version: 2.7.14
Qt version: 4.8.7
Coin version: 4.0.0a
OCC version: 7.2.0
Locale: English/UnitedStates (en_US)
User avatar
yorik
Site Admin
Posts: 9688
Joined: Tue Feb 17, 2009 9:16 pm
Location: São Paulo, Brazil
Contact:

Re: Rebar schedules for box culverts

Postby yorik » Wed Apr 11, 2018 1:20 pm

Wow that looks very nice! These data could easily be obtained from the model I think...
thschrader
Posts: 902
Joined: Sat May 20, 2017 12:06 pm
Location: Germany

Re: Rebar schedules for box culverts

Postby thschrader » Sun May 06, 2018 4:18 pm

@ Joel Graff:
Hi Joel,
I try to design the reinforcement of the rigid-frame-culvert below.
Picture taken from
http://www.bv.transports.gouv.qc.ca/mono/1165314.pdf
The culverts are prefabricated in a factory and then delivered to the construction site.
Is that right? If so, why not connect the V/U/H-rebars to get one rebar?
Whats the minimum concrete cover you must use in USA?
regards Thomas
rigid_frame_culvert.JPG
rigid_frame_culvert.JPG (58.42 KiB) Viewed 58 times