RAM Structural System Help

Criteria - Design Criteria Bar Selection Tab

This is the location where various parameters are defined to fine-tune the Reinforcement selection.

SettingDescription
Minimum Number of Bars in Footing Used to define the minimum acceptable number of bars in a layer. If 3 is entered there will be at least 3 bars in the bottom of the footing parallel to the major and minor directions. If bars are required in the top of the footing there will also be at least 3 bars in footing parallel to the major and minor directions.
Bar Sizes group
SettingDescription
Keep all bars in layer the same size (Spread Footings and Pile Caps) Used to force bars in the major and minor direction for the top (negative flexure) and bottom (positive flexure) of a footing to be the same size.
Square Footings use same Quantity and Size Bars for Both Directions in Layer (Spread Footings and Pile Caps) This option forces square footings to have the same quantity and size bars for the major and minor direction in the bottom layer. The same will be done for the top layer when required.
Adjacent bars may differ in size by # size (Continuous Footings) Used to control the change in bare size for bars in the same layer and direction. For example, if 1 is used then only #4,#5 and #6 bars can be placed in an adjacent span to a #5 bar.
Spacing group
SettingDescription
Segment Spacing Increment This value is used to help in defining design segment dimensions that are rounded off to typical dimensions that engineers would use. The segment spacing will not affect dimensions that are explicitly defined by code like the locations used for checking shear and flexure along a continuous footing.
Note: This value may produce Longitudinal Top Reinforcement Segments that are not exactly under columns. It is advisable to keep this value between 3 and 12 inches.
Shear Bar Spacing Increment This value is used to define the shear reinforcement spacing increment so that shear reinforcement spacing matches office and project standards.
Select bars based on… Used in selecting the optimization criteria for selecting the best bar size and quantity combination from all the acceptable combination of bar sizes and quantities (e.g., Selection by area will give the least bar area). The program will use these selection criteria to try and select reasonable bar sizes. When a set of bar size and quantity combinations are acceptable, the selected set will satisfy both the user defined criteria and internally defined selection criteria that are used to give reasonable bar sets.
  • Minimum (Reinforcement) Bar Area
  • Minimum Bar Spacing
  • Maximum Bar Spacing