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Yes and yes.
The location of the load application can influence the nominal capacity of
the member. The difference can be non-trivial. Standards assume loads to be
applied at the shear centre of the section. Refer to SSRC Guide to Stability
of Steel Structures (? check name).

Regards
Paul
-- 
Paul Ransom, P.Eng.
ph 905 639-9628
fax 905 639-3866
ad026(--nospam--at)hwcn.org


> From: David Topete <d.topete73(--nospam--at)gmail.com>

> I don't believe the point of load application matters as much as the
> stresses in the beam.  if you sit a post on a beam or hang a load from the

> 
> On Sat, Nov 21, 2009 at 5:57 AM, Gary L. Hodgson and Assoc. <
> design(--nospam--at)hodgsoneng.ca> wrote:
> 
>> If the load is applied to the bottom flange only, the beam is unlikely to
>> buckle sideways.  However as the building code (here in Canada) does not
>> differentiate between points of load application, I would be obliged to

>> Gary
>> 
>> 
>> G Vishwanath wrote:

>> Threre is no horizontal brace to restrict the unsupported length of the
>> compression flange.I  I later got the opportunity to do the calcs.

>> Vish



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