Bridge - Elastomeric Bearing Pad

[macan1]

I am designing a pedestrian bridge. It is a one-simple span bridge, with tube (HSS) trusses supported on 4 elastomeric bearing pads.
The bearing pads are subject to water (rain and snow).
Is this possible? Do we have to protect the bearing pads from water, to maintain dry condition?

 

[bridgebuster]

No. The base plates,masonry plates, anchor rods, etc should be painted or galvanized.

 

[SlideRuleEra]

Concur with bridgebuster. Here is a link to a FAQ sheet for typical elastomeric pads (usually made of Neoprene). See Item #1 for a direct response to your questions

http://www.pretread.com/bridgebearingFAQ08.html

http://www.SlideRuleEra.net

 

[BigH]

I agree with the above - for the elastomeric pads, they are exposed to the elements - but remember, they are much smaller than the beam that they are supporting so they will really have "cover" to the elements other than for temperatures.