BW - Based on a couple of your responses it sounds like you want a one-size fits all approach which always sounds great in the beginning but rarely works. In the 300 MRI wind speed map which is same as ASCE 7-16, Fig 26.5-1A for Risk Category I "other" structures, using 150 mph will certainly...
If you use passive soil pressure to resist the applied load sliding force, then according to ASCE 7, §2.4.1 you can use (up to) 0.6H for sliding resistance where the soil is permanent or 0.0H where the soil resistance is temporary (i.e. neglect passive pressure). That is on top of the FoS...
So if IBC hasn't vetted through ASCE 7-22 for inclusion into the 2021 IBC it seems odd that a State would bypass this step to incorporate 7-22 when it adopts IBC 2021 as its model code. Hmm.... I'm not a legal scholar but that isn't how I would have advised the State to proceed.
I've recently...
In §12.4.2.2, Exception 2a. the ±Ev vertical load is removed (neglected) when designing for Seismic Design Category 'B' so it is still applicable for SDC C and higher. Note SDC 'A' structures are already exempt from seismic design so it is not listed. I've never read this before but it will...
Good call on IBC not allowing 1/3 increase for Lr. Sure seems like that would acceptable since it is such a temporary load and the reality of 12 psf x180' x30' bays = 64.8 kips is outrageous for a warehouse/industrial setting. 12 psf equates to a 300 lb worker on a 5'x5' grid or 180x30/25 = 216...
ntattose: We considered full tension ties between columns but we've got utility trenches in between supporting equipment so that prevents us from doing that other than by going deep. We also considered the hairpins to engage the slab but the slab is discontinuous because of the trenches and...
Working on a 180-ft long span PEMB and getting huge kickout loads. Geotech took "Easy Button" and used presumptive capacities from IBC Table 1806.2 for clay soils resulting in lateral resistance of 100 psf/ft depth passive and 130 psf shear strength of soil. At least they gave us 2,500 psf...
