These are some of the key points in relation to reporting of accidents and dangerous occurrences: 1  Only fatal and non-fatal injuries are reportable. 2  Fatal accidents must be reported immediately to the Authority or GardaÃ­. 3  Non-fatal accidents or dangerous occurrences should be reported to the Authority within ten working days of the event.
Barrel vault is a type of vault with its semi-cylindrical arched surface allongated to form a barrel or tunnel shaped structure. Barrel vaults have been an integral part of ancient architecture and is seen in several churches and cathedrals.slide 1 of 3.ne more disadvantage of barrel vault is that it forms a series of continuous arches which are most of the time so deep that they cover a three-dimensional space. This makes the interior of the structures extremely dark as they provide very little intrusion for light.
Three types of vault were commonly used: the barrel-vault, the groined or four-part vault, and the dome. The barrel-vault was generally semi-cylindrical in section, and was used to cover corridors and oblong halls, like the temple-cellas, or was bent around a curve, as in amphitheatre passages.