loads superposition/load order

Question

This should be an easy one for you all. 
 When you place a load over a given area and then add an additional load that overlaps it, does STAAD consider the loads additive or choose one or the other? I'm thinking specifically if you define a live floor load, of say 40 psf, over an entire floor at an elevation, and then have a group defined for laundry within the confines of a smaller area (at the same elevation) with a live load of 150 psf. Will STAAD choose one over the other based on the way they are defined in the command file or is the load 190 psf? Thanks, 
 Sam

Abhisek M · Accepted Answer

STAAD will consider both the loads i.e. for your example it will be 190psf.

Shahid Nazir · Answer

If another live load comes over the same area it will consider both live loads as addition over that are leaving other area from its effect...... Means it's effect of 40psf and amount from 150psf which is in group..... Group only means that program please consider 150psf over the selected area.

Abhisek M · Answer

Yes.. Actually whatever loads you are putting on a the area in different methods, it will add all of them and analyze the structure with that effect.

loads superposition/load order

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