**Definitions:**

**Pound Per Square Foot** (abbreviations: **psf, or lb/ft2**): is a British (Imperial) and American pressure unit which is directly related to the psi pressure unit by a factor of 144 (1 sq ft = 12 in x 12 in = 144 sq in). Where, 1 pound per square foot equals 47.8803 pascals.

**Tonne Per Meter Cube** (abbreviations: **t/m2, or tpm2**): is the SI derived unit of pressure used to quantify internal pressure, stress, Young's modulus and ultimate tensile strength interms of tonne per meter cube.

## How to Convert Pounds Per Square Feet to Tonnes Per Meters Cube

*Example: How many tonnes per meters cube are equivalent to 86.5 pounds per square feet?*

As;

1 pounds per square feet = 0.00478803 tonnes per meters cube

86.5 pounds per square feet = Y tonnes per meters cube

Assuming Y is the answer, and by criss-cross principle;

Y equals 86.5 times 0.00478803 over 1

(i.e.) Y = 86.5 * 0.00478803 / 1 = 0.414164595 tonnes per meters cube

Answer is: 0.414164595 tonnes per meters cube are equivalent to 86.5 pounds per square feet.

*Practice Question: Convert the following units into t/m2:*

N.B.: After working out the answer to each of the next questions, click adjacent button to see the correct answer.

( i ) 22.94 psf

( ii ) 49.02 psf

( iii ) 18.69 psf