This is the type of survey you'll want to have done to find out the condition of the structure to make sure there aren't any unexpected collapses.

An engineering survey should take place before any demolition work begins. This survey will look into the current condition of the structure to make sure any unexpected collapses do not happen and point out any areas to look out for.

Asked by Jason Forbes · Last updated 5 years ago · 5.3K views · SOURCE