BBC news report 1 July 2005
I am sur there will be a thorough investigation despite no injury to people. However to any structural engineer an arch has been used by our predeceesors to take compression only, usually for uniformly distributed loads.
The second picture shows the soil above the tunnel has been excavated so that the crown supports more than the two sides.
The point of interest is can anyone guarantee the two sides were in equilibrium. If it wasn't then would the arch be subjected to a sway?
Can an arch as slender as the one showed in the photo take horizontal load from the uneven distribution of the soil?
I am sur there will be a thorough investigation despite no injury to people. However to any structural engineer an arch has been used by our predeceesors to take compression only, usually for uniformly distributed loads.
The second picture shows the soil above the tunnel has been excavated so that the crown supports more than the two sides.
The point of interest is can anyone guarantee the two sides were in equilibrium. If it wasn't then would the arch be subjected to a sway?
Can an arch as slender as the one showed in the photo take horizontal load from the uneven distribution of the soil?
