Load Case Symbols
Load Case 'symbols', or abbreviations, are assigned to each load case. These abbreviations are used in the Load Combination dialogs, the display of the load combinations and several reports. They are also used in the Load Combination templates.
Table 1 is a list of load cases available to the generator and the symbol associated with them. When these symbols appear in a template, they will be included in the generated combinations provided the load case has been analyzed.
| Load Case Symbol | Load Case It Represents |
|---|---|
| D | Dead Load |
| Lp | Positive Live Load |
| Ln | Negative Live Load |
| Rfp | Positive Roof Load |
| Rfn | Negative Roof Load |
| Sp | Positive Snow Load |
| Sn | Negative Snow Load |
| W | Wind Load |
| E | Earthquake Load |
| Dyn | Dynamic (Response Spectra) Load |
| O (Oh, not Zero) | User Defined Story Force (type "Other") |
| ND | Notional Dead Load |
| NL | Notional Live Load |
| NR | Notional Roof |
The load combination generator recognizes one additional load case symbol. This is NOT a symbol that will be seen in the combo generator dialog or in reports. It is valid only in conjunction with controls 2 and 5 (see 3.1.4).
Positive and Negative refer to downward acting Live Loads (Positive) and upward acting (uplift) Live Loads (Negative). The program automatically detects and treats these as separate Live Load cases, when they occur.