Friday, January 8, 2010

Has a building ever fallen in NYC due to there being too many layers of roofing?

You are supposed to remove old roofing before replacing it but many old buildings have various layers. Has this ever caused a roof to fall in?Has a building ever fallen in NYC due to there being too many layers of roofing?
Interesting question. I checked some structural engineering data and could not find a single structural failure with multi-layer roofing as a cause. My guess is that because the load would be so well distributed and not a point type load that it would take many many layers of roofing to cause a structural failure.Has a building ever fallen in NYC due to there being too many layers of roofing?
Not that I am aware of.

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