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Andy Burns[_2_]

On 19/12/2007 10:57, wrote:

2. From memory, the spec given by the engineer was around 120kg per M
- would that sound correct?

Sounds too high.

You say it's 30cm tall and wide, I assume it's an "I" shape and so is
essentially 3 strips, 30cm width, assume 1cm thick, taking the density
of steel at 7.8g/cm^3

3[sides of the I] x 30cm x 1cm x 100cm x 7.8g/cm^3 = about 70kg/m
or 490kg for the lot (1cm thickness is probably overstated)