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Posted: Wed Nov 05, 2003 9:31 am Post subject: Notional Hor. Loads
Hello Respected Prof. Kalyanraman The term notional horizontal loads (NHL) first comes in the Cl 4.1.2 (c) in which we are deciding the type of rigid jointed frame (whether sway or non sway), after applying NHL and comparing the deflection of each story with the given expressions.
the Cl. 4.3.6 also says To check the sway stability of the frame subjected to gravity loads, notional horizontal forces should be applied.
So it is nowhere written that we should design the str. for these NHL as suggested by you (The sway stability check is done as per combined forces requirement of section 9.3, which is a strength check) If this is the intention it should be included in the table 5.1 given as load combination.
Now if a rigid jointed frame comes out to be non-sway as per Cl. 4.1.2 (c) for NHL whether it will be considered as non-sway for other lateral loads (WL/EL) also or I have to determine the type of frame for these loads separately.
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