There are two types of grids or grid lines in RAM Modeler: standard grids and construction grids. Standard grids are the primary reference points for both the engineer and the program in defining the structural model. These grid lines can usually be obtained from the architectural drawings. The engineer may also add grid lines anywhere necessary to assist in creating the model. Grid lines and grid labels will be included in an exported DXF File. Standard grids are always part of a grid system.

Construction grids are free form grids that are used solely for modeling purposes. They are not labeled, do not affect the labeling of columns and are not part of the standard grid systems.

Grid Systems are groups of related grids. There are two types of Grid Systems: Orthogonal and Radial. Orthogonal Grid Systems consist of X Grids and Y Grids; these grids are at 90 degrees to each other. Radial Grid Systems consist of Radial Grids and Circular Grids.

Grid Systems can be offset and rotated with respect to the global axes.

Grid intersections between grid lines (both standard and construction) become modeling nodes, or SnapTo points. These points are used by some modeling commands where the cursor "snaps" from node to node. This simplifies the process of laying down elements graphically. Member locations and intersections, such as beam ends, also create SnapTo points.