Units
Precast/Prestressed Girder works with either U.S. or Metric (SI) units. Following is a list of units and the conversion between both systems.
| English | Metric | Conversion Factor* |
|---|---|---|
| ft | m | 0.3048 |
| in | mm | 25.4 |
| in2/ft | mm2/m | 2116.6667 |
| in2 | mm2 | 645.16 |
| in4 | mm4×106 | 0.41623 |
| k | kN | 4.44822 |
| k-ft | kN-m | 1.35582 |
| klf | kN/m | 14.5939 |
| ksi | MPa | 6.89476 |
| psi | kPa | 6.89476 |
| pcf | kg/m3 | 16.0185 |
| plf | N/m | 14.4939 |
| psf | Pa | 47.8803 |
* For example, 1 ft = 0.3048 m
Note: Although you can switch between U.S. and metric units at anytime during program execution, some round-off errors may be introduced due to the fact that for converting between both systems of units, the program uses only the number of decimals that are shown on the screen.
Also, the entire calculation engine for the LRFD version of Precast/Prestressed Girder uses metric formulas from the LRFD Specifications (SI Units), and the AASHTO Standard (LFD) version uses the U.S. units formulas.