Dynamic load factor for liquid induced loads
Dynamic load factor for liquid induced loads
(OP)
Hi all,
I am designing an RC frame 7m high which holds a water tank at 7m level. The tank has two supports and sits on two horizontal beams.
The loads I in consideration are as follows:
Dead tank self weight: 100kN
Imposed: 200kN (Water vertical)
Dynamic load: 100kN (water vertical)
Dynamic load: 50kN Fx (water longitudinal)
Dynamic load: 50kN Fy and 100kNm Fy (water transversal)
The recommended value of the partial factor for the liquid induced loads during operation
YQ= 1,20. (BS EN 1991-4: Silos and tanks)
Can I apply a factor of 1.20 to all the above imposed loads for the frame design loads?
is there a separate factor for the dynamic loads? or can I treat them as imposed loads to the frame?
Thank you
I am designing an RC frame 7m high which holds a water tank at 7m level. The tank has two supports and sits on two horizontal beams.
The loads I in consideration are as follows:
Dead tank self weight: 100kN
Imposed: 200kN (Water vertical)
Dynamic load: 100kN (water vertical)
Dynamic load: 50kN Fx (water longitudinal)
Dynamic load: 50kN Fy and 100kNm Fy (water transversal)
The recommended value of the partial factor for the liquid induced loads during operation
YQ= 1,20. (BS EN 1991-4: Silos and tanks)
Can I apply a factor of 1.20 to all the above imposed loads for the frame design loads?
is there a separate factor for the dynamic loads? or can I treat them as imposed loads to the frame?
Thank you






RE: Dynamic load factor for liquid induced loads
I would think it would depend on how you arrived at those loads. I.e. are they seismic? Imposed by piping or another source?
If they are seismic loads (calculated by a recognized code like ASCE, API, etc)......there would be no need for a DLF (Dynamic Load Factor). However if these are conventional loads figured by calculations that did not take into account the dynamics of the system.....then I would definitely impose a DLF (the maximum of which would be 2).
RE: Dynamic load factor for liquid induced loads
RE: Dynamic load factor for liquid induced loads