If i had to guess then I’d guess they mean lighter by volume. Like if an i-beam made of steel weighs 6 tons, then the same size i-beam made using superwood would weigh 1 ton.
I.e. it’s 10 times better in strength-to-weight, and it’s 6 times better in strength-to-volume.
This is just my guess at interpreting what they tried to say
If i had to guess then I’d guess they mean lighter by volume. Like if an i-beam made of steel weighs 6 tons, then the same size i-beam made using superwood would weigh 1 ton.
I.e. it’s 10 times better in strength-to-weight, and it’s 6 times better in strength-to-volume.
This is just my guess at interpreting what they tried to say