# Timber modeling (engineering constants)

**URL:** <https://prepomax.discourse.group/t/timber-modeling-engineering-constants/1120>\
**Category:** General Questions\
**Created:** [September 26, 2023, 5:46pm UTC](https://prepomax.discourse.group/t/timber-modeling-engineering-constants/1120 "2023-09-26T17:46:53Z")\
**Posts on this page:** 1\
**Showing post:** 8

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**Author:** ![E.Martin](https://avatars.discourse-cdn.com/v4/letter/e/e47c2d/32.png) [@E.Martin](https://prepomax.discourse.group/u/E.Martin)\
**Post date:** [September 26, 2023, 6:51pm UTC](https://prepomax.discourse.group/t/timber-modeling-engineering-constants/1120/8 "2023-09-26T18:51:01Z")

</div>

I have created 3 cubes, with the same material and loading and support conditions, but using ORIENTATION so that the greatest rigidity varies from one to another. And what I get is absolutely zero results. The problem comes from ORIENTATION, since if it is not included it does offer results (obviously the same in all 3 cases).  
Do you have any ideas about what I’m doing wrong?

\*Material, Name=test  
\*Elastic,Type=ENGINEERING CONSTANTS  
1000.0,500.0,500.0,0.2,0.2,0.3,500.0,500.0  
250.0,20.0  
\*Orientation, Name=orientationZ, System=RECTANGULAR  
0.,0.,1.,1.0,0.,0.  
\*Orientation, Name=orientationX, System=RECTANGULAR  
1.,0.,0.,1.,0.,0.  
\*Orientation, Name=orientationY, System=RECTANGULAR  
0.,1.,0.,0.,0.,1.  
\*Solid section, Elset=Solid\_part-1, Material=test, Orientation=orientationZ  
\*Solid section, Elset=Solid\_part-2, Material=test, Orientation=orientationX  
\*Solid section, Elset=Solid\_part-3, Material=test, Orientation=orientationY

 ![SNAG-0000](https://global.discourse-cdn.com/free1/uploads/prepomax/original/2X/c/c59f576d05a56efa022fa9521e73c46720f83fcf.png)  
[cubes.inp](https://prepomax.discourse.group/uploads/short-url/rfOqx3988KBergF47AQiX5f9ipc.inp) (4.1 MB)

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