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Re: Brick Lintel Protection

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Both of these observations are true.  I only presented them as a
consideration depending on the specifics.

				Regards,

				H. Daryl Richardson

Nels Roselund, SE wrote:
> 
> A couple of observations regarding Daryl's reply:
> 
> 1.)  The steel that oxidizes to form a rust-resistant barrier [corten in the
> US] causes rust-streaking of the wall below it.
> 
> 2.)  Designing for a corrosion allowance for a lintel, which is embedded in
> the wall, may not be a good idea: I've seen corrosion of a steel lintel in a
> brick wall lift the wall and supported roof, forming an ugly crack in the
> wall due to rust-jacking -- the rust occupies much more volume than the
> steel from which it forms and is capable of high pressures.
> 
> Nels Roselund
> Structural Engineer
> South San Gabriel, CA
> njineer(--nospam--at)att.net
> 
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