super dead load

[Dieste]

Hi everybody!
I'm a spanish architect (here in Spain architects use to design the frameworks of his buildings) and I'm beginning with a very famous program whose menu bar is, of course, in english...
I don't know what's the meaning of some terms referred to loads. I suppose that you easily will be able to answer me: Which is the different between "DEAD LOAD" and "SUPER DEAD LOAD"?
Here in Spain, we have "Peso propio" (the own weigh of the structural elements, for example, the weigh of a flat slab or a beam), the "carga muerta" (translated "dead load", for example, the weigh of a tiled floor) and the "sobrecarga" (I suppose this is the same that your live load: people, furniture or traffic weigh)...

Could you help me? Thanks,
Dieste.

 

[shin25]

I think it may be referring to 'super imposed dead load'. In short, Super imposed dead load is the dead load on the structure excluding the self weight.

 

[Lion06]

I agree with shin25, it is probably "super-imposed dead load".
The only difference I might draw is that it can include the self-weight, e.g. for an elevated slab on steel beam the weight of the slab would be a super-imposed dead load but is still part of the self-weight of the structure - although not the member.

 

[Dieste]

That makes sense.
So, "dead load" and nothing else is the same that self weigh?

Thanks,
Dieste.

 

[shin25]

Super imposed dead loads are usually applied on the finished structure and act on the composite section.

 

[msquared48]

Sshin25 is correct.

In composite beam design, in order to figure the deflection after composite action has taken place, the term is used to differentiate between dead loads applied prior to (dead load)and after (Superimposed deadload) composite action.

Mike McCann
McCann Engineering

 

[Lion06]

msquared-
That is correct, but in my explanation I was careful NOT to use the term composite. Quite often, even in a composite building, many beams are designed as non-composite for various reasons (e.g. the beam is too short to get the required number of studs for minimum % composite, You have a cantilever situation with negative bending). These were the situations I was referring to.

 

[msquared48]

OK. Gotcha. Thanks.

Mike McCann
McCann Engineering