Examination of Witnesses (Questions 12580
- 12599)
12580. LORD BROOKE OF ALVERTHORPE: Can
I ask one question on access to the park at night? You say that
coaches go in there when there are pop concerts, and so on.
12581. MR PAYNE: Yes, they do.
12582. LORD BROOKE OF ALVERTHORPE: So
when do they stop them going in?
12583. MR PAYNE: At the moment when there
is a large event going on in Park Lane, several days before the
concert they close North Carriage Drive—and it is just full
of lorries and coaches and everything delivering bits to that
area. Then North Carriage Drive is closed for the whole time and
it is used as a service point for various large vehicles coming
in and servicing the concert. Then you have the series of concerts
and then afterwards they have all the taking it apart going on;
lorries dismembering it and going in and out.
12584. CHAIRMAN: Mr Payne, have you any
other witnesses?
12585. MR PAYNE: Only this question about
Mr Potell, who evidently—
12586. CHAIRMAN: Is he here?
12587. MR PAYNE: He is not here, my Lord.
12588. CHAIRMAN: In that case you have
no other witnesses. Is that right?
12589. CHAIRMAN: I have no other witnesses.
MR KEITH
BERRYMAN, recalled Examined
by MR MOULD
12590. MR MOULD: Mr Berryman, we have
the cross-section in front of us.[31]
I would like you, please, if you would, to tell the Committee,
first of all, the dimensions of the Crossrail tunnel which we
see in cross-section both westbound and eastbound on the plan
before us?
(Mr Berryman) The internal diameter of the
tunnel is 6 metres, my Lord. The lining of the tunnel is 300 millimetres
thick, which means that the diameter, the extrados, of the lining
is 6.6 metres, and then there is a layer of grout where the tunnel-boring
machine has passed over the outside of the lining, which is about
another, at the most, 200 millimetres thick. So it gives a total
diameter of 6.8 metres, to the extrados of the whole structure.
The point about compensation grouting is that the grouting that
is being referred to here is not compensation grouting; that is
a different matter; that would not be used on this site where
the tunnels are being driven by machine, and in very competent
London Clay. If you were choosing the best location in the world
to dig a tunnel of this sort, you would not go far wrong if you
chose this location.
12591. This plan has been prepared in order
to inform the Committee in relation to Mr Payne's Petition. Is
that right?
(Mr Berryman) That is correct.
12592. Can you help the Committee with whether,
in your judgment, this is an accurate plan, insofar as the dimensions
shown on it are concerned?
(Mr Berryman) This is an accurate plan.
I have just checked with the sections deposited with Parliament
as to the accuracy of the dimensions, and it is correct.
12593. Allowing for limits of deviation, both
horizontal and vertical, Mr Berryman, is there any prospect whatsoever
that upon construction either the westbound running tunnel or
the eastbound running tunnel in this location will be at a level
which is less than 15 metres below the basement of Mr Payne's
property?
(Mr Berryman) There is no possibility
of that. The limits of deviation would only allow us to lift the
tunnels by a maximum of 3 metres, but in this location, because
they are close to the Central Line tunnels and pass beneath the
Central Line tunnels, there is no possibility of raising the tunnels
at all. So this will be the—
12594. CHAIRMAN: It is 23.7 metres, is
it?
(Mr Berryman)
That is to the crown of the tunnel from the bottom of the basement,
my Lord.
12595. MR MOULD: The other vertical dimension
shown, I think, is to the track.
(Mr Berryman)
That is correct.
12596. BARONESS FOOKES: Noise emanates
from the train on rail, does it not, which is at the bottom of
the tunnel?
(Mr Berryman)
That is correct, my Lady, although we are talking here about groundborne
noise and I do not want to stray into Mr Thornely-Taylor's issue.
12597. LORD JAMES OF BLACKHEATH: Mr Mould,
because of the very complex nature of this discussion and the
confusions we have, it would be hugely helpful if you and Mr Berryman
between you could just establish the points of difference with
the figures that Mr Winbourne gave us and describe where there
is a variant between what Mr Berryman is saying and what Mr Winbourne
gave us and why.
(Mr Berryman)
May I respond to that, Mr Mould?
12598. MR MOULD: That would be helpful.
(Mr Berryman)
Mr Winbourne was relying on the documents prepared for the Private
Member's Bill, which was deposited in 1992, at which point I understand
the design was proposed to take the Crossrail tunnels over the
Central Line. We decided not to do that because there is also
a sewer known as the middle level sewer number one, and the clearance
between that and the Central Lines is very tight.
12599. LORD JAMES OF BLACKHEATH: That
is very helpful. Would you continue to note such differences as
you go on?
(Mr Berryman)
Indeed.
31 Committee Ref: A67, 25-28 Hyde Park Gardens (including
22 Stanhope Terrace), Section A-A Details (SCN-20080507-022) Back
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