Is there an error in the calculation of the structural mass?

Grasshopper Karamba3D
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1

Hi~
My project is a steel structure pavilion, and I found that the structural mass calculated in Karamba differs greatly from the structural mass calculated in Sap2000. I have repeatedly searched for the reason, but cannot find it.
The properties defined for the mid level structural components in Karamba and Sap2000 are the same.
Version of Sap2000：24.2
Version of karamba： 1.3.3
Version of rhino：7.29

karamaba vs sap
karamaba vs sap1356×373 179 KB

the mass of stracture .gh (287.6 KB)
Pavilion2.zip (520.0 KB)
the mass of stracture.3dm (4.8 MB)

2

Hi, have you checked that the gamma (material density) in Karamba and SAP of all your materials actually match. This can cause discrepencies in your calculations.

However when I check your columns and your braces the weights are basically the same so you should check your mesh.

image
image1920×714 136 KB

4

Thank you for your answer.
Maybe there is a problem with my rhino model, which I am investigating now.
I have another question for you:

问题
问题1591×667 378 KB

Best regards.

5

The text is simply a text output so you can convert the numbers to m and then change the units yourself into cm by manipulating the text.