guardrail of wire rope or chain
guardrail of wire rope or chain
(OP)
Has anyone out there designed a guardrail system with wire rope or chain? I'm having trouble reconciling the resulting loads to the posts in a "reasonable" manner. Lets say with two posts and a chain "rail" between, placing the 200 lb. point load at the center, perpendicular to the rail. Assuming a relatively small deflection of the chain, the vector components of the forces pulling inward on the posts gets very large and seems beyond the intent of the 200 lb. point load requirement. Anyone have any ideas on the subject? Thanks.






RE: guardrail of wire rope or chain
Arguing with an engineer is like wrestling with a pig in mud. After a while you realize that they like it
RE: guardrail of wire rope or chain
RE: guardrail of wire rope or chain
http://www.fhwa.dot.gov/crt/lifecycle/cable.cfm
www.SlideRuleEra.net![[idea] idea](https://www.tipmaster.com/images/idea.gif)
www.VacuumTubeEra.net
RE: guardrail of wire rope or chain
Arguing with an engineer is like wrestling with a pig in mud. After a while you realize that they like it
RE: guardrail of wire rope or chain
h
RE: guardrail of wire rope or chain
RE: guardrail of wire rope or chain
RE: guardrail of wire rope or chain
I'm thinking somewhere, I've also seen a maximum deflection under load- possibly in design of cable handrails on scaffolding.
RE: guardrail of wire rope or chain
I think you can start with drawing the deflection profile due to chain/cable selfweight alone to determine the angle, then add downward and side push to get maximum forces on support posts. You can also intentionally to produce larger initial sag to minimize the horizontal force components. The analysis is similar to the design for horizontal lifelines, and I remember there is useful guide/doc at SlideRuleEra's web site (see third response from top).
However, I question the application of such flexible guardrail system for human use, can you provide info on location and purpose of this application? Warning: you maybe bombard by responses.
RE: guardrail of wire rope or chain
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