RAM Structural System Help

Forces from RAM Concrete

In RAM Concrete, the user has the option of specifying fixity (continuity) conditions for all concrete and material type 'other' beams. These fixity conditions, along with the assigned section properties, applied loads, and skip load criteria, are used to calculate the gravity forces and reactions on all the supporting columns. The column forces are accumulated down the structure and are available at the base of the structure to load the foundation. Gravity wall axial loads are also transferred down the structure to the foundation in the Concrete Analysis. No gravity wall moments or shears are transferred to the foundation (only the accumulated axial force) as the single story analysis (performed in RAM Concrete) does not capture the lateral displacement in the wall through its full height.

The upward and downward acting live loads applied to the structure are combined and considered to act simultaneously in the Concrete Analysis module. In RAM Frame, however, discrete negative and positive live loads are applied for the analysis and used in the foundation design for lateral members. Refer to the RAM Frame Technical Manual for more information.