Foundation load summary : Post processing - Gravity forces from RAM Concrete VS RAM Steel

Question

Hi, 
 Question 1: I am modeling a 1 story building, First floor is a raised floor with concrete slab and conc beams and roof has joists & metal deck. The gravity forces from RAM Concrete does not match with gravity forces RAM steel. Also, the RAM concrete forces are less than RAM steel forces. Can you please explain the reason for this difference in forces. 
 Question 2: I have created another model with only one floor which has concrete beams and conc slab and I applied the roof load manually on the exterior beams. Again, the gravity forces from RAM Concrete does not match with RAM steel and RAM concrete forces are less than RAM steel forces. When I haven't modeled a steel member, why would there be forces from RAM steel? 
 please let me know. 
 
 Question 1: Question 2

Electrical bldg [Gravity Current-First floor only].rss

Seth Guthrie · Answer

Check out this post on the different analysis types for details: https://communities.bentley.com/products/structural/structural_analysis___design/w/structural_analysis_and_design__wiki/6513.aspx 
 For more on wall behavior see: https://communities.bentley.com/products/structural/structural_analysis___design/w/structural_analysis_and_design__wiki/ram-ss-walls-faq.aspx

Seth Guthrie · Answer

LL1 is one of many patterns of live load. It represent the live load on the first beam only. You can look at a report of the column design forces to get the Live Load for the sum of all Live Load cases, or turn skip loading off in the analysis criteria, to check total live loads. Also be aware of how LL reduction is handled in the various programs.

Seth Guthrie · Answer

Yes, beam continuity or fixity can have a dramatic shift in the individual column reactions (it tends to result in more load to interior supports). Assuming the beams really are supposed to be fixed I think the Concrete analysis is more accurate. 
 You can still use Report - Loads in Ram Steel column module for concrete columns.

Seth Guthrie · Answer

For a structure with all one way decks, the two programs do the same LL reduction calculation. Both calculate the LLr % based on the simple tributary area of the slab and then the reduction % is assigned to the member forces. In Ram Concrete, if you report the column design forces we will show the reduced live load and indicate the LLr % applied. If you show Vertical Reactions on screen, these are unreduced values, however.