Measurement Units
Posted in Measurement Units |
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Civil engineers throughout the world accept both the United States Customary System (USCS) and the System International (SI) units of measure for both applied and theoretical calculations. However, the SI units are much more widely used than those of the USCS. Hence, both the USCS and the SI units are presented for essentially every formula in this website.
To permit even wider use of this text, this website contains
the conversion factors needed to switch from one system to the other.
Commonly Used USCS and SI Units *
USCS unit |
SI unit |
SI symbol |
Conversion factor ( multiply USCS unit by this factor to obtain SI unit) |
Square foot |
Square meter |
M2 |
0.0929 |
| Cubic foot | Cubic meter |
M3 |
0.2831 |
| Pound per square inch | Kilopascal |
KPa |
6.894 |
|
Pound force |
Newton | Nu | 4.448 |
| Foot pound torque | Newton meter | N-m |
1.356 |
| Kip foot |
Kilonewton meter |
LN-m | 1.355 |
| Gallon per minute | Liter per second | L/s | 0.06309 |
Kip per square inch |
Megapascal |
MPa |
6.89 |
* These are the most common units which everyone should know.This website deals with a detailed discussion in next pages.
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