What leaks within


… leaks seeping
into the soil, fresh water
and the sea
are continuous.

Radiation
has found its way
into local produce, milk
and tap water

as far as Tokyo…..



Taken from a BBC news report on the 31st March 2011. Submitted by Kim Rooney.

Falseworks

Most falseworks
are designed to support
vertical
loads,
but in practice
they are also subjected
to forces in the horizontal plane.

These result
from dynamic effects
such
as the rapid pouring
or vibrating of concrete,
from the movement of ten-
sioning cables,
from the wind, from differential
expansion
under heat or load,
and from many
other causes.

Some of these forces
can be estimated
but others can not,
and the fact
that they
are usually contained
is no proof
that they are not important.

They may be
particularly significant
in skew spans
where displacements in two
perpendicular directions
produce unexpected strains
in the third,
or in cases where
the design loads are applied
consecutively
rather than simultaneously.

Taken from an article (that I have, without reason, kept for a very long time) on the Building Standard 449:1959 – The use of structural steel in building. Submitted by Kim Rooney.