Bernard's interesting reply mentions places where spon.com. can occur,
including junctions. One of the more unusual i have seen was around a
Butterley air crossing i.e. a junction where two roadways meet, but as
one roadway carries intake air and the other return air, there is a
steel fabrication which carries one airstream over the other and keeps
them separate. Probably from air leakage, spon. com. had developed
around the air crossing to the extent that the steel fabrication was
heated like an oven, you could see it glowing- you could only get
through by running, it was too hot to stand in it!
Barry Job.
|