A good engineering practice is to comply factors of conversion into form of tables for easier reference. We oath to think to much inside our mind and will definitely forget it as we thought it is not too important to remember or the units is already given as reference in some cases. In the previous post, compilation of conversion factors between Imperial and SI Units.
This tables of conversion factors, between English (British) and SI Units used for many application especially in soil mechanics field and soil laboratory (plus in-situ) testing. It is useful for application in soil testing via laboratory, as accordance to British Standards, American Society for Testing and Materials or any other standards used as construction specification.
The tables below is pretty much straight forward…
| Parameters | SI Units | English Units |
| Length | 1 mm | 3.937 x 10-2 in. 3.218 x 10-3 ft |
| 1 m | 39.37 in. 3.281 ft |
|
| Area | 1 cm2 | 0.155 in.2 1.076 x 10-3 ft2 |
| 1 m2 | 1550 in.2 10.76 ft2 |
|
| Volume | 1 cm3 | 0.061 in.3 3.531 x 10-5 ft3 |
| 1 m3 | 61023.74 in.3 35.315 ft3 |
|
| Force | 1 N | 0.22482 lb |
| 1 kN | 0.22482 kip | |
| Velocity | 1 cm/s | 1.969 ft/min 1034643.6 ft/year |
| Stress | 1 kN/m2 | 0.145 lb/in.2
20.89 lb/ft2 |
| Mass | 1 kg | 2.2046 lb 2.2046 x 10-3 kip |
| Unit Weight | 1 kN/m3 | 6.367 lb/ft3 |
| Coefficient of Consolidation | 1 cm2/s | 0.155 in.2/s 2.883 x 103 ft2/month |
CCS: Table 2 (a): Conversion from SI Units to English Units
| Parameters | English Units | SI Units |
|
Length |
1 in | 25.4 mm |
| 1 ft | 0.3048 m 304.8 mm |
|
| Area | 1 in.2 | 6.4516 x 10-4 m2 6.4516 cm2 645.16 mm2 |
| 1 ft2 | 929 x 10-4 m2 929.03 cm2 9203 mm2 |
|
|
Volume |
1 in.3 | 16.387 cm3 |
| 1 ft3 | 0.028317 m3 28317 mm3 |
|
| Force | 1 lb | 4.448 N |
| Velocity | 1 ft/s | 304.8 mm/s 0.3048 m/s |
| 1 ft/min | 5.08 mm/s 0.00508 m/s |
|
| Stress | 1 lb/in.2 | 6.9 kN/m2 |
| 1 lb/ft2 | 47.88 N/m2 | |
| Mass | 1 lb | 0.4536 kg |
| Unit Weight | 1 lb/ft3 | 157.06 N/m3 |
| Coefficient of Consolidation | 1 in.2/s | 6.452 cm2/s |
| 1 ft2/s | 929.03 cm2/s |
CCS: Table 2 (b): Conversion from English Units to SI Units
Calculator
The conversion units shown in CCS: Table 2 (a) and (b) above would be our general guideline or reference especially in the field of materials testing. I personally gathered this useful information from various reference as laboratory testing guidelines. With that in mind, hopefully this reference may help and may develop your skill in converting units effectively and accurately…
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Author: Mr. Vine | Creator: Civil Craft Structures | Subscribe: RSS or Email
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