According ACI 421.3R , Clear Span between supports (ln) affect directly the analysis of two way slab therefore always is recommended not move columns locations to insure the model simulate accurately the real structure behavior as much as possible.
Category: Civil Engineering
𝐖𝐡𝐲 𝐚𝐫𝐞 𝐢𝐧𝐭𝐞𝐫𝐧𝐚𝐥 𝐟𝐨𝐫𝐜𝐞𝐬 𝐢𝐧 𝐬𝐡𝐞𝐚𝐫 𝐰𝐚𝐥𝐥𝐬 𝐟𝐫𝐨𝐦 𝟑𝐃 𝐫𝐞𝐬𝐩𝐨𝐧𝐬𝐞 𝐬𝐩𝐞𝐜𝐭𝐫𝐮𝐦 𝐚𝐧𝐚𝐥𝐲𝐬𝐢𝐬 𝐦𝐮𝐜𝐡 𝐥𝐨𝐰𝐞𝐫 𝐭𝐡𝐚𝐧 𝐟𝐫𝐨𝐦 𝐡𝐚𝐧𝐝 𝐜𝐚𝐥𝐜𝐮𝐥𝐚𝐭𝐢𝐨𝐧?
That topic keeps coming up from engineers who are starting to use #3Dseismicanalysis for buildings. Inevitably, a student asked me that very question just a couple of weeks ago… FEA users are always encouraged to first carry out a simple #handcalculation before running a complex 3D analysis. One should always…
concrete models which are confined and unconfined concrete models.
Now, in this post, I am sharing with you a couple of concrete models which are confined and unconfined concrete models. First of all why I am learning all these models? (you might be thinking) I am working on the performance-based seismic evaluation of RC structures. Having set an objective…
flat slab has beam between support could transfer all shear to column
According to ACI 421.3R , for flat slab has beam between support could transfer all shear to column if alfa1L2/L1 >1.0 which refer to its relevant stiffens to the slab , if not as mentioned on the attached picture slab should be checked to punching stress (two way shear )however…
Important notes related to standard hook as per ACI318-19
1) Standard hook must satisfy minimum horizontal length (Ldh) , minimum vertical length (Lext) and bent diameter . (three basic requirements must be satisfied ) 2) Ldh can not be reduced by As,req/As,prov so full Ldh must be developed inside the support ( you may increase beam width or column…
