Basic Question on Design Analysis
Basic Question on Design Analysis
(OP)
Hi All,
Please see the attached plan. When I design the 2-way slab (GL 1-3), I want to utilize the moment from the span 3-4. How should I get the moment from span 3-4? Use 3D software or analyse the whole frame (GL 1-4) and get the negative moment at support at GL 3. Use it for 2-way slab design?
What is your practice?
Thanks
Please see the attached plan. When I design the 2-way slab (GL 1-3), I want to utilize the moment from the span 3-4. How should I get the moment from span 3-4? Use 3D software or analyse the whole frame (GL 1-4) and get the negative moment at support at GL 3. Use it for 2-way slab design?
What is your practice?
Thanks






RE: Basic Question on Design Analysis
RE: Basic Question on Design Analysis
Use effective flange beam/slab props for beam span of grids 3-4.
Reduce your stiffness of your end columns to reflect realistic moment transfer.
Are the 2-way slabs going to be post-tensioned , and if so, will it use column-middle strip with bonded PT or banded tendons and UNbonded PT?
RE: Basic Question on Design Analysis
All the elements will be Bonded PT and will use average moment method (without column-middle strip).
I saw people design span 2-3 of 2-way slab as end span and one way beam spanning GL 3-4 as simple span beam.
Is it conservative?
BTW What do mean by slap props?
CELinottawa
I am not talking about moment redistribution. Yes, I am trying to use multi spans solution like you said.
RE: Basic Question on Design Analysis
TTFN

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