Criteria - Frame Type
The dialog is where global frame type criteria can be selected which will apply to all lateral members in the structure.
| Setting | Description |
|---|---|
| Frame Type | There are three different frame types that can be used for the design of concrete beams and columns. They are Ordinary Moment Frame (OMF), Intermediate Moment Frame (IMF) and Special Moment Frame (SMF). The gravity members are always designed as OMF. Similar to the Load Combo Generator, the selection of the frame type in either the beam or column mode will change the option for both modes. |
| Seismic Design Category | Select the seismic design category for the design code from the drop-down list. |
| Load Combination Factors | When the IMF option is selected, you have three options for the gravity dead and live loads load factors used to calculate the minimum shear capacity of the beams . This is due to a discrepancy between the ACI-318 99 section R 21.10.3 and some building codes like the UBC 97. When the SMF option is selected the load factors are 1.0 for the gravity loads for all codes. |