Collapse of buildings is not new to Nigeria, neither is it only peculiar to Nigeria, however that will not stop us from taking critical look at the situation and finding a solution to it.
Collapse of building though can happen to any kind of building but the casualty of multistorey buildings can be so terrible.
The collapse of storey buildings in Nigeria, especially in Lagos usually goes along with it attending casualties which can be more than 20. But what really motivates multistorey buildings.

http://buildingcontractorsecrets.com/2007/09/28/causes-of-building-collapse/