Hello as we know, RCDC detects slabs if we have a closed loop of beams, then
1.Is there any trick to model a cantilever slab in RCDC? if yes, then how?
2.case two how can i create a slab supported with 3 beams in RCDC?
if there is any OnDemand course about the mentioned scenario please help me with a link
RCDC reads the beam-column geometry from the analysis file and identifies all closed regions as slabs.
All the regions that are detected within the closed geometry of beams will be identified as slabs. So no slab will be detected for a beam geometry of 3 beams.
The span type and the design continuity of each slab is also computed for each slab and displayed.
There is an option to add a slab in RCDC and you can provide the Lx and Ly of the slab and also the loading on it. RCDC will perform the design part of the added slab but however the slab that is not detected from the analysis file but added in RCDC itself will bot be shown in layout or any drawings generated from RCDC.
Refer attached short video for reference.
Thank you,one more question
In many cases you may find a cantilever has shorter walls on the edge of the cantilever,those walls may act as handrail,whose loading is a line load(kn/m)
How can i add that type of load on the added cantilever?
my question was
1.Between Lx and Ly which distance is parallel to the beam which is supporting the cantilever slab?
2.On the video attached the line load was applied on length 0m to 3m.this means the load was assigned only one side of cantilever what about the remaining two sides?
refer the picture attached below, if sides A , B and C are not supported by beams, and all three sides has to carry line load hw can i apply on the remaining two sides, because during load assignment there is no option to assign load on Lx or Ly
Applying the UDL on 3 unsupported edges of cantilever slab and calculating the moment for the same is not a straight forward process to do and RCDC is not doing this. We rather suggest you to calculate the mid and support moment by manual calculation and by providing these moment as input, you can perform the design and get the results.
Ok and which side does RCDC consider to be Lx and which is Ly?
Depending upon the end condition / span considered and Start - End location entered, RCDC designs the slab for UDL, calculates the Support moments, Mid moment for the entire length and provides the Ast per 'm' of the slab. Refer below image for reference.
Also i would request you to go through the detailed calculation report from RCDC for more understanding.
iam currently using RCDC for Staad Pro C.E Update 5,this version of RCDC does not generate cantilever slab design report