Wall structure monitoring system

A wall having a fluid impervious coating on an inner surface thereof and further comprising a monitoring arrangement which provides for monitoring the condition of the wall, the monitoring arrangement mounted on the inner surface of the wall, the inner surface of the wall and at least a part of the monitoring arrangement having the fluid impervious coating applied thereto, the monitoring arrangement including one of:

• a housing attached to and enclosing an enclosed region of the inner surface of the wall, the housing having an outer surface and extending to the same side thereof as the fluid impervious coating, the fluid impervious coating being applied to a part of the outer surface of the housing, the housing having a removable closure member that is fluid tight when closed, the housing providing access to the enclosed region of the inner surface of the wall that is not coated by the fluid impervious coating, wherein a space is formed between the inner surface of the wall in the enclosed region and an underside of the removable closure member;
• and a protective member attached to the inner surface of the wall, the protective member enclosing a region of the inner surface, wherein the protective member is situated between the inner surface of the wall and the fluid impervious coating and the enclosed region of the inner surface of the wall is not coated by the fluid impervious coating and wherein a space is formed between the inner surface in the enclosed region and an underside of the protective member.