Apparently, they have used "a1" grade concrete when of course for a public building (especially in portsmouth) it should be rubbishy fall-apart concrete that looks ghastly with black streaks after 5 years, causes skin cancer in 10 years and gets condemned within 20.
According to "New Civil Engineer" some non-destructive tests have given "variable" results so now they are going to call in consultants and do lots more tests. -Standard response!
It sounds to me like the correct grade of concrete but shall we say less than perfect workmanship. This also implies less than perfect supervision by Portsmouth C.C. or their consultants. The concrete placing operation was 24hrs per day for several weeks and the subcontractor who did it went bust just before finishing it.
There is usually a way of fixing this and it is usually expensive.
There must be a few more things left that could still go wrong with this job but I can't think what they could be at present.
Forgive the technicalities and guess my line of work.
<hr width=100% size=1>Better to keep one's mouth shut and be considered a fool than open it and remove all possible doubt.
I worked for them around 127 years ago when they had the contract for the M6
Nr Tebay.
We found a rather soft patch of ground one day which developed into a journey to the centre of the earth. There's still a dip in the motorway just north of the Windfarm thats been built Nr killington Services.
Apparently they use Polystyrene blocks now when they find a spongy bit - wonder what that will be like in 30 years?