A colleague of mine designed a concrete OMRF in a High Seismic Risk area. As ACI code requirement, it should have been a SMRF (this requirement was overlooked, his previous designs were all in very low seismic areas).
The designed OMRF structure obviously resulted to a massive structure since...
i am developing a program for steel design using CISC/CSA16.1-94. It is almost complete except that I could not find any formula to calculate Lu (limiting unbraced length) this is equivalent to "Lp" of AISC 360-05, (Lp values from AISC 360-05 are too conservative).
I tried the iteration...
I am evaluating an existing building in Canada and I encountered steel shapes that I could not find in any available references. not even in 1934 AISC, old CISC handbook etc.
the beam shapes are mostly 27I160, 27I145, 27I101, etc. (note that I/S shapes commonly comes up to 24" only, even in...
hi, i am preparing a design specification/criteria for our new project.
for shielding effect of multi-frame structures (e.g., a very long piperack), i am looking for a shielding effect formula to be applied. i was away from design work for 8 years. i remember using the shielding effect formula...
