Prokon base doubt
Prokon base doubt
(OP)
Can any one help to explain the difference between the ULS ovt LF and ULS LF selfweight ? Is it the partial factor for action or partial factor for resistance ?
for the circled red part, LF ULS represent the partial factor for action of ULS state, right ?
LF ULS ovt represent the partial factor for action of ULS state(for overturning) , right ?
for the circled red part, LF ULS represent the partial factor for action of ULS state, right ?
LF ULS ovt represent the partial factor for action of ULS state(for overturning) , right ?
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RE: Prokon base doubt
My guess is that the 1.0 load factors are for bearing pressure and overturning checks. Those are normally done at service levels and are not factored up. Thus, the coefficient is 1 versus your 1.4 and 1.6 factors.
RE: Prokon base doubt
The "more information" link shows the following:
Analysis approach
Modern design codes tend to consider stability checks like overturning at ultimate limit state. Depending on your own preference, you can "force" the program to check stability at ultimate limit state or using the older method of working loads (permissible working stress) by adjusting the various load factors:
Do reach out to the technical support team at support@prokon.com. They are fast, friendly and super competent.
Stephen
Disclosure: I am affiliated with Prokon Software Consultants, the developers of PROKON.
RE: Prokon base doubt
I understand that both LF ULS and LF ULS ovt represent the load factor for unfavourable action, the ULS LF selfweight represent the unfavourable action for selfweight.... However, the ULS ovt LF represent the favourable action or unfavourbale action for overturning ? Can you confirm on this ?
RE: Prokon base doubt
- ULS ovt. LF self weight (table on the left): Since own weight has a stabilizing effect, use a smaller value, e.g. 0.9 or 1.0 (depending on your design code).
- LF ULS ovt. (loading table on the right): For applied loads, consider whether the load is destabilizing or stabilizing, and then use a larger (larger than 1.0) or smaller value respectively (smaller than 1.0 or perhaps 0.0).
If you don't want to use the ULS checks, then of course you can simply stick to the SLS checks :)RE: Prokon base doubt
So, ULS ovt. LF self weight can be considered as favourable action against overturning ? (Stablising effect against overturning) ?