There are two separate considerations for nonstructural components in ASCE 7 Chapter 13. One of these is protecting building occupants from falling debris and relates to anchorage and bracing of these components so that they do not become dislodged during shaking and become a falling hazard. The...
In my professional opinion, exemption is not the same as exclusion. It may be that other load cases and combinations govern the design instead of "SDC-C with overall weights less than 20lbs". PLEASE NOTE: I am use to dealing with structures supporting mechanical devices and including some...
This message was posted by a user wishing to remain anonymous Hello together, I'm going to design an application for a customer in Saudi-Arabia (SDC=C), who demands, that components need to be seismically approved acc. to ASCE 7. The intended application is a mechanical, nonstructural device...
Dear Osama , fluctuations in water table is affected to the structure may not be taken as a load in fact reduction of load can be applied. Due to attraction from above and gravity below to cause shrinking and expansion. In any case a basement floor is advisable. Weight of removed material is...
Section 2.3.4 does not address buoyancy, but rather, self-straining effects, such as thermal loads, shrinkage, creep, etc. In both ASCE 7-16 and 7-22 loads associated with water embodied in soil is considered as load H in the load combinations of Chapter 2. ASCE 7-22 contains somewhat clarified...
Dear ASCE, I have a technical question regarding the buoyancy load ( uplift pressure from the ground water), as per ASCE 7 -22, section 2.3.4, could we consider it as Hw with factor of 1.0 , or the load will be under fluid load (F) with load factor of 1.2? could you please advice
Regarding IEBC, I was actually referring to the change of occupancy and classification of work. I realize that I did not make this clear; my mistake! The crux is that there are a lot of Level 1 alterations with no change of occupancy where the project doesn't even have a structural engineer on...
ASCE 7 does not prohibit classificaton of server racks as Dead Load and could be interpretted as specifically permitting it. ASCE 7 Chapter 2 defines "Dead Load" as "Dead loads consist of the weight of all materials of construction incorporated into the building including, but not limited to,...
Thanks Christian for the response. In regards to IEBC triggers for reanalysis, it shouldn't change if the load is classified as dead load or live load. For example: if you design for 2000lb racks - the 5% IEBC triggers means you can put in 2100lb racks without reanalysis - whether the rack is...