Rob Keeble
Member
- Messages
- 12,633
- Location
- GTA Ontario Canada
Had another dump of the white stuff last night here.
So i have a question that has crossed my boy scout mind.
Having observed the extensive damage the ice storm caused to enormous trees here, just before Xmas , and although we had a little melt occur the last few days, it was not sufficient to do much melting.
So we have a layer building on the roof which looks likes its set for the duration of winter.
The layer is about 2 inches of snow followed by at min 1 inch of solid ice followed by what was before last night another 2 inches of snow.
Now i guess that top layer of snow is at least another 2 inches thicker so its up to 4 inches. Now the most recent is not as compact as the prior stuff so I guess its not as heavy.
But my question really is has anyone got an idea of what or how one determines when its necessary to do something to get rid of the load. Like what amount of snow is typically catered for in snow load calculations.
I can see snow load calculations being different for different areas given historical and anticipated snow loads so I suppose its a bit like how long is a piece of string. But anyone have any kind of frame of reference.
So i have a question that has crossed my boy scout mind.
Having observed the extensive damage the ice storm caused to enormous trees here, just before Xmas , and although we had a little melt occur the last few days, it was not sufficient to do much melting.
So we have a layer building on the roof which looks likes its set for the duration of winter.
The layer is about 2 inches of snow followed by at min 1 inch of solid ice followed by what was before last night another 2 inches of snow.
Now i guess that top layer of snow is at least another 2 inches thicker so its up to 4 inches. Now the most recent is not as compact as the prior stuff so I guess its not as heavy.
But my question really is has anyone got an idea of what or how one determines when its necessary to do something to get rid of the load. Like what amount of snow is typically catered for in snow load calculations.
I can see snow load calculations being different for different areas given historical and anticipated snow loads so I suppose its a bit like how long is a piece of string. But anyone have any kind of frame of reference.