An ASCE membership login is required to participate in discussion forums and ASCE Mentor Match. You must login to participate.
Learning about Thrive? View Video Tutorials here.
Cody, the seismic values in ASCE 7-10 are based on the 2008 National Seismic Hazard model developed by USGS. The values in the 2016 edition use the 2014 National Seismic Hazard model. In comparing disaggregated values of seismic parameters obtained form the two models, it appears that in both...
I have a project in Vonore, TN where we are adding on to something that we designed when the Reference code was ASCE7-10. The reference code now is -16 and it appears the seismic values have jumped significantly. 7-10 values Ss = 40 7-16 values Ss = 70 Any idea as to why these values bumped up 75%?
I assume your question relates to the design of structural connections under the requirements of AISC 341 as well as those of ASCE 7. AISC 341 requires design of certain connections for the lesser of the design seismic forces (computed using the specified R value), amplified by the Omega-0...
This message was posted by a user wishing to remain anonymous For connections design in seismic resistance systems, the static EQ is 5 times larger than the Response Spectrum for R=5. If we consider an R = 1 for RS, the value will be equivalent to the static EQ with R=5, shall we still use an...
I have done a 4 story structure, 70% is used piled foundation, remaining part pile could not done due to hard strata there strip mat is done for foundation with 2 piled connected with raft beam two foundations didn't connected at ground level at one end the other shorter and is joined by a small...
I contacted a few Committee members on 113 and the consensus was it is up to the EOR or substation owner to determine if a particular structure in the Sub needed the individual foundations tied together as 318 wants to do. Structures that may be sensitive to movement of individua foundations or...
I am the Editor of the 2nd Edition of 113 but don't know a lot about ACI and the foundation design issues. I have sent this question to a couple of 113 committee members that know about ACI. My initial thought is the ACI deals mainly with buildings and their foundations as does ASCE 7 for...
The latest edition of the ASCE's Substation Structure Design Guide (ASCE 113-23), references ACI 318-19. Per section 18.13.4.1 of ACI 318-19 foundation seismic ties are required for piers and caissons in Seismic Design Category C, D, E and F. This provision makes sense for building design, as...
ACI 18 13 4 1.png