I have encountered several Force Spike on our Panel results recently.
What are the causes of these load spikes?
Smoothing within panels:
Global Smoothing:
Can you guys please help me on what causes this?
The slab has a wall below it as designated by the line on the pictures attached.
@Rafal.Gaweda wrote:
File please
Hi Rafal,
To my Regret, our File cannot be sent to you due to agreement between us and our client. Is there anyway that you can resolve this or explaining to us what happend without the need for files?
I also Have the Following screenshots in connection with my first post.:
Panel below Slab: Smoothing Within Panel
Panel Below Slab: Global Smoothing
If the edge from the picture is the common one for the panels not being in one plane then you should not use the global smoothing.
Mind that you don't have to send the entire model. It would be enough if you send only panels that are "attached" to this edge.
If you find your post answered press the Accept as Solution button please. This will help other users to find solutions much faster. Thank you.
@Artur.Kosakowski wrote:If the edge from the picture is the common one for the panels not being in one plane then you should not use the global smoothing.
Mind that you don't have to send the entire model. It would be enough if you send only panels that are "attached" to this edge.
If you find your post answered press the Accept as Solution button please. This will help other users to find solutions much faster. Thank you.
Does this mean that we only use Global Smoothing on panels that are co-planar?
I believe what you said is the Wall edge on that model attached perpendicularyly to a slab on top of it.
In general the answer is yes. In the situation when you have one slab and one wall you could use this option provided you set the local directions of panels and the projection of the results in the "coherent" way (see the attached picture). The aim is to average the same type of the results.
If you find your post answered press the Accept as Solution button please. This will help other users to find solutions much faster. Thank you.
@Artur.Kosakowski wrote:In general the answer is yes. In the situation when you have one slab and one wall you could use this option provided you set the local directions of panels and the projection of the results in the "coherent" way (see the attached picture). The aim is to average the same type of the results.
If you find your post answered press the Accept as Solution button please. This will help other users to find solutions much faster. Thank you.
Looking at your example, what if I pointed my Local Z axis Inwards for the Walls?? will that be ok?
And another thing, in connection to my example, using your sample structure, if I have a Wall in between the wall supports, can I still use global averaging?
See image below:
Looking at your example, what if I pointed my Local Z axis Inwards for the Walls?? will that be ok?
For W&A moments for the top reinforcement you can do this providing that you will reverse the slab Z direction too. Mind that for the slab the top reinforcement will be at the bottom side of the slab.
And another thing, in connection to my example, using your sample structure, if I have a Wall in between the wall supports, can I still use global averaging?
You can but you should not
If you find your post answered press the Accept as Solution button please. This will help other users to find solutions much faster. Thank you.
@Artur.Kosakowski wrote:Looking at your example, what if I pointed my Local Z axis Inwards for the Walls?? will that be ok?
For W&A moments for the top reinforcement you can do this providing that you will reverse the slab Z direction too. Mind that for the slab the top reinforcement will be at the bottom side of the slab.
In our case we have Slab Local Z axis pointed outside while the walls are pointed inside. Will that make a difference on forces extracted? We make use of Myy+ for Top Slab reinforcement and Myy- for Bottom wall Reinforcement design forces.
Yes. In this way you are averaging different types of results.
If you find your post answered press the Accept as Solution button please. This will help other users to find solutions much faster. Thank you.
@Artur.Kosakowski wrote:Yes. In this way you are averaging different types of results.
If you find your post answered press the Accept as Solution button please. This will help other users to find solutions much faster. Thank you.
With this kind of process, does this mean that if we are using that kind of local axis orientation, it's preferable to use smoothing within panels rather than global smoothing?
With this kind of process, does this mean that if we are using that kind of local axis orientation, it's preferable to use smoothing within panels rather than global smoothing?
For the situation as in your model you should use smoothing within panels. This should also be used when you are not sure what to set for (or if it can be used at all) the global one
If you find your post answered press the Accept as Solution button please. This will help other users to find solutions much faster. Thank you.
@Artur.Kosakowski wrote:With this kind of process, does this mean that if we are using that kind of local axis orientation, it's preferable to use smoothing within panels rather than global smoothing?For the situation as in your model you should use smoothing within panels. This should also be used when you are not sure what to set for (or if it can be used at all) the global one
If you find your post answered press the Accept as Solution button please. This will help other users to find solutions much faster. Thank you.
I don't know if this question should be asked here but i want to know if these smoothing/averaging methods are only present in RSAP and other softwares don't?
If it is not visible in the user interface then it is done in the background. If you display results with no smoothing you will find out why it is done yourself
If you find your post answered press the Accept as Solution button please. This will help other users to find solutions much faster. Thank you.