RAM Concept Help

About default loadings

RAM Concept provides default loadings for self-weight, post-tensioning and gravity loads. For mat files, RAM Concept provides additional default loadings for wind and seismic.

Self-Dead Loading This is the self-weight of the concrete. All other dead loading is superimposed.

Balance Loading Post-tensioning tendons and anchors apply internal loads to the concrete structure. We call this set of loads the Balance Loading because you normally design the post-tensioning to balance or offset the other loadings applied to the slab.

Hyperstatic Loading The hyperstatic loading is a theoretical loading that considers the restraining effect of the supports on the structure as it tries to deform due to the application of post-tensioning. Many people use the term "secondary" in place of "hyperstatic". The loading is not necessarily secondary in nature. RAM Concept calculates the effects of the hyperstatic loading for all objects (elements, springs, supports, design sections, design strip segments and punching checks) as described in "Post-tensioning loadings".

Temporary Construction (At Stressing) Loading This set of superimposed loads is present during construction when the contractor stresses the tendons. This loading is rarely used, and you need not consider it for RC structures.

Other Dead Loading This set of superimposed dead loads applies to PT structures after stressing of post-tensioning tendons. It is simply the superimposed dead loads for RC structures.

Live (Reducible) Loading

Live (Unreducible) Loading

Live (Storage) Loading

Live (Parking) Loading

Live (Roof) Loading

Different sets of live loads. See About loading types for further description.

Snow Loading The snow loads on the structure.

Service Wind North Loading The set of wind loads in the north-south direction (for mat defaults only).

Service Wind East Loading The set of wind loads in the east-west direction (for mat defaults only).

Ultimate Seismic North Loading The set of seismic loads in the north-south direction (for mat defaults only).

Ultimate Seismic East Loading The set of seismic loads in the east-west direction (for mat defaults only).