ETABS seems to ignore a part of the beam mass...

[JUANDAVID]

I AM USING ETABS 8.15. I HAVE DETECTED THAT ETABS, IN BEAMS ELEMENTS, IS ONLY CONSIDERING ONE FORTH (1/4) OF TOTAL BEAM
MASS WHEN ASSEMBLING MASS AT THE JOINTS. IT SHOULD ASSEMBLE ONE HALF (1/2) OF THE BEAM MASS AT EACH JOINT. WHAT IS GOING
ON? HOW CAN I FIX THIS PROBLEM? THANKS FOR YOU HELP.

P.D. WHEN ASSEMBLING THE JOINT MASS FROM SHELL AND COLUMN ELEMENTS, ETABS DOES IT RIGHT, THE PROBLEM IS WITH BEAM ELEMENTS.

 

[efighettib]

Check the properties of the material you are using to the beams.

 

[amadeus]

Also, I would recommend you to upgrade to the latest ETABS version. It is 8.4.2 as of March 6. CSI releases very buggy early versions that are polished as time goes by.

Amadeus