Timber to Timber cantilever connection 3

[Aleeeex]

Hi,

This is really uncommon to me however I have tried my upmost and was wondering if you would share your thoughts.

I have 2 different sized timber beams cantilevered both which are supported by steel column. The top timber beam overhangs the bottom with a distance of 2.1m from the steel column. I have come up with the following connection. I used 20 M12 and the utilization is 0.89.

I have checked the following

1- bolts capacity perp to the grain
2- timber beams tensile stress along the grain, and shear stresses.

Bending Moment

Shear

Thank you for your input.

 

[Aleeeex]

Thank you steveh49

 

[Celt83]

If the lower beam is supported by another cantilevered beam at its end then your model and deflection are not correct. You probably need to model this in 3D to begin to get accurate results.

My Personal Open Source Structural Applications:

https://github.com/buddyd16/Structural-Engineering

Open Source Structural GitHub Group:

https://github.com/open-struct-engineer

 

[BAretired]

If the lower beam is supported by another cantilevered beam at its end then your model and deflection are not correct. You probably need to model this in 3D to begin to get accurate results.

The lower beam is supported by a pair of columns unless the structure has changed. No need for a 3D model.

BA