Notional Horizontal Loads
Notional Horizontal Loads
(OP)
Is there any NOTIONAL LOAD provision in ACI code as it is present in BS code.
The concept is to apply some %age of gravity load as horizontal load to the building and check its stability but I am not sure if this clause is present in ACI/UBC/ASCE/IBC?
The concept is to apply some %age of gravity load as horizontal load to the building and check its stability but I am not sure if this clause is present in ACI/UBC/ASCE/IBC?





RE: Notional Horizontal Loads
Seems to me to be similar to a minimum sismic load though, or like a 1% minimum eccentricity on a concrete column.
What's the rationlle in the "BS" code (I assume you mean the British Standard)?
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: Notional Horizontal Loads
RE: Notional Horizontal Loads
However, the first paragraph of 10.10.1 (I think that is the section) does allow for a designer to use a true P-Delta type analysis as long as you include in that analysis considerations for cracking, shrinkage, etc.
ACI also adds the discouraging (and frustrating) sentence that says no matter what method you use with a second order analysis it MUST be a method that has proven to correspond to real-world behavior via testing (a hat tip to the professors out there I guess - to generate more research).
RE: Notional Horizontal Loads
Generally for building design, if the building has been designed properly for wind and earthquake forces than it will be robust enough for the 1% notional force.