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In 25 years of engineering I have never seen a building designed and built as separate buildings. This mostly completed reinforced concrete (RC) building is in a seismic area (Ss=1.30, S1=50), has an 80000 SF footprint, has no irregularities and is 5 stories. The design build contractor designed...

Thanks Dik. Seems like joints are a very good reason NOT to make a single building by putting 7 separate ones next to each other. Do you see some advantage? The building is almost square with rigid diaphragms and plenty of interior wall lines.

Thanks ztengguy. An entry like a porte-cochere, open with tall columns? That makes more sense because it may have been easier than tying in the roof diaphragm. Than designing for the appropriate separation per ASCE 7 sec. 12.12.3, for a more slender structure next to the stiffer main building.

One large footprint RC bldg designed & built as 7 separate bldgs In 25 years of engineering I have never seen a building designed and built as separate buildings. This mostly completed reinforced concrete (RC) building is in a seismic area (Ss=1.30, S1=50), has an 80000 SF footprint, has no...

Don't count on your client to provide the occupancy, but in this case the client may be correct. Cat III and IV depend on the type and quantity of hazmat being stored. Check Table 1-1 and check with your jurisdiction for special requirements or just assume Cat 4 and move on. Self supporting...