Dear All,
Design of frame structure with Indian Standard IS 13920
I designed a RCC frame structure with Indian code IS 456. The design result was alright. As the structure was in high seismic zone, I reperformed the design with IS 13920. The structure even though has been designed by the software but the design result is full of unheard warnings, mostly of the same character, particularly as under:
Warning: ‘ UDL loading is not defined for member 85, 86, 89 ……….etc etc
Default value will be used’
Almost all the beam members are in the list of warning. There was no such warning when I ran the file with IS 456. Now I have to submit that when there is no UDL on the beam members in the structure how can I load them with UDL.
Please clarify whether Staad pro V8i is not inbuilt for designing the structure with IS 13920 – Ductile detailing or there is a bug in the software. As the design has been performed with default value for UDL, may I know what default value has been considered by the software.
sureshprsharma
Dear Srinivasan
your reply is quite clear and many many thanks to you for your quick response. I have analysed my model both with Load Combination and Repeat Load. There is no difference in analysis result and design result. The result is same for both the cases.
I have used GLD parameter for beam design in staad file. But while analyzing the file, it quits unexpectedly. How can it be solved.
There has been a problem with IS:13920 code design. One can ask the program to compute Equivalent UDL for the design of beams by using GLD parameter. The program is facing problem with GLD parameter in STAAD.Pro V8i version 20.07.09.31. This has already been logged in problem tracking system. This problem has even been fixed and the fix will be available in the next elease of STAAD.Pro which is expected to be released officially in few weeks.
Workaround: You can use EUDL parameter instead of GLD parameter
Sir, GLD parameter appilicable to only beams ? or columns can be added? since calculation of design shear force for columns 1.4 is there as per 13920 code. But I cann't find any explnation regarding this in manual file.
GLD or EUDL parameter should be defined for beams. You can refer-
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Is there any information in staad help file regarding shear force calculations for a column if we use 13920 code (old or new). Help fine clearly explains about shear calculations for a beam but we have clause for columns also.