Units of Measurement iv our area

Units of measurement used in past and present surveys are

For construction work: feet, inches, fractions of inches (m, mm)
For most surveys: feet, tenths, hundredths, thousandths (m, mm)
For National Geodetic Survey (NGS) control surveys: meters, 0.1, 0.01, 0.001 m

The most-used equivalents are
1 meter=39.37 in =3.2808 ft
1 rod =1 pole=1 perch=16.5ft(5.029 m)
1 engineer’s chain =100 ft =100 links (30.48 m)
1 Gunter’s chain= 66 ft (20.11 m) =100
Gunter’s links(lk)=4 rods=0.020 km

1 acre=100,000 sq (Gunter’s) links=43,560ft²= 160 rods²=10 sq (Gunter’s) chains=4046.87m²=0.4047 ha

1 rood=1011.5 m²=40 rods²

1 ha= 10,000 m²=107,639.10 ft²=2.471 acres

1 arpent=about 0.85 acre, or length of side of 1 square arpent (varies) (about 3439.1 m²)

1 statute mi=5280 ft=1609.35 m

1 mi²=640 acres (258.94 ha)
1 nautical mi (U.S.)= 6080.27 ft= 1853.248 m

1 fathom=6 ft (1.829 m)

1 cubit=18 in (0.457 m)

1 degree=0.01745 rad=60 min =3600 s
sin 1 =0.01745241
1 rad = 57.30 degree

Detailed Units – Convert Units

Following table shows how can we convert various most commonly used units from one unit system to another.

Units to convert	Value
Square foot to Square meter	1 ft² = 0.092903 m²
Foot per second squared  to Meter per second squared	1 ft² = 0. 3048 m²
Cubic foot to  Cubic meter	1 ft³ = 0.028316 m³
Pound per cubic inch to Kilogram per cubic meter	1 lb/in³ = 27679.9 047102 kg/m³
Gallon per minute = Liter per second	1 Gallon per minute = 0.0631 Liter per second
Pound per square inch = Kilopascal	1 Psi (Pound Per Square Inch)  = 6.894757  Kpa (Kilopascal)
Pound force = Newton	1 Pound force = 4.448222 Newton
Pound per Square Foot to Pascal	1 lbf/ft2 = 47.88025 Pascal
Acre foot per day = Cubic meter per second	1 Acre foot per day= 1428 (m3/s)
Acre to square meter	1 acre = 4046.856 m²
Cubic foot per second = Cubic meter per second	1 ft³/s = 0.028316847 m³/s

Measurement Units

Measurement units and standards square measure totally different in several countries however to keep up a customary, SI units square measure largely used once addressing comes involving {different|totally totally different|completely different} countries or maybe different states. tiny comes are often through with the regionally used unit system however once the project is huge, one commonplace unit system is to be used.

Two most typical system employed in the u.  s. square measure

United States Customary System (USCS)

System International (SI)

But the SI unit system is additional wide used everywhere the planet. Following is that the table that shows however you'll be able to convert USCS measurements in SI measurements. ( simply multiply the USCS quantity with the corresponding figure given in table below

USCS unit X Factor = SI unit	SI symbol
Square foot X 0.0929 = Square meter	M2
Cubic foot  X 0.2831 = Cubic meter	M3
Pound per square inch X 6.894 = Kilopascal	KPa
Pound force X 4.448 =  Newton	Nu
Foot pound torque X 1.356 = Newton meter	N-m
Kip foot X 1.355 = Kilonewton meter	LN-m
Gallon per minute X 0.06309 = Liter per second	L/s
Kip per square inch X 6.89 = Megapascal	MPa