Snow Ice Strength

[strainstress]

I am trying to figure out torque required to actuate a damper against ice-built up of 6 in on the blades.

Does anyone know where to find snow ice mechanical strength properties (tensile and shear strength) ?

Thanks,

StressStrain

 

[dik]

Do a search for Department of the Army, US Army Corps of Engineers, Engineering and Design, Ice Engineering, manual EH 1110-2-1612... I tried uploading it, but it's too large.

Dik

 

[oldestguy]

UW Extension Madison, WI has done a lot of research on ice, as effect on dock piling, but I am prevented here from naming names I think. (608) 262-1034 Continuing education may help.

 

[dhengr]

Strainstress:
I wouldn’t use the damper mechanism or any concentrated torque (or pry bar) to try to brake that ice loose. Whatever the ice strength, the damper blades or mechanism were not designed to do that. It may work, but it might damage the damper too. If you can, I would get up there with some heat, a heater and blower of some sort (a gas fired salamander?) to melt the ice off the blades from the inside. Then go outside and clear the ice away so you don’t bust up the bottom couple blades.

 

[chicopee]

Strainstress you have a double post, therefore, one of the post will have to be retracted . The other post is in the HVAC/R forum.

 

[dik]

Chicopee... I sometimes post in a couple of forums because I don't know which one will provide an answer... I've never visited the HVAC/R forum and would have missed his post completely... It may be that mechanical guys may be more familiar with the problem, but, they might not visit the Civil/Structural related areas...

Dik

 

[ewh]

Double posting is bad enough, but I've seen this same question in three forums so far. Cross-posting is against site guidelines.

“Know the rules well, so you can break them effectively.”
-Dalai Lama XIV