tag:blogger.com,1999:blog-2433841880619171855.post2844835110326790619..comments2024-03-27T21:09:44.320+00:00Comments on Pat'sBlog: Hanging it UpUnknownnoreply@blogger.comBlogger5125tag:blogger.com,1999:blog-2433841880619171855.post-77596662695229215242011-03-27T15:52:37.902+01:002011-03-27T15:52:37.902+01:00Denise,
No offense to your DH, but a response lik...Denise,<br /> No offense to your DH, but a response like "circles have nothing to do with it" is a cop-out answer. In place of circles.... What?. <br /><br />2)So it expands and contracts...we all knew that...but assume the temp stays the same... now what...<br /><br />3) Why would it more likely be a parabola if we inverted the catenary..<br /><br />and for five)... well heck..for all of these it seems like the textbook version of "it has been shown"... or the classroom version of "you need another course to understand the answer...".. <br /><br /><br />I always tried to avoid giving dismissive answers..I guess it has made me reluctant to accept them... <br /><br /><br />but thanks for trying..<br />surely there is an engineer out there who can explain in a way that an audience of reasonably education math/science people could learn something from..Pat's Bloghttps://www.blogger.com/profile/15234744401613958081noreply@blogger.comtag:blogger.com,1999:blog-2433841880619171855.post-66733421106210206802011-03-26T15:34:36.963+00:002011-03-26T15:34:36.963+00:00Hanging the spurs up, eh Hoss? Don't you want ...Hanging the spurs up, eh Hoss? Don't you want to die in the saddle? Sorry, remembering the John Wayne movies of my wayward but not wayward enough youth.<br /><br />What engineer doesn't like doing equations? Pls don't tell me this is the guy in charge of maintaining the Minneapolis-St. Paul bridges. <br /><br />Nevertheless, this is an interesting puzzle and I liked his responses, thank you Letsplay.Steven Colyerhttps://www.blogger.com/profile/10435759210177642257noreply@blogger.comtag:blogger.com,1999:blog-2433841880619171855.post-54832217868088962882011-03-26T14:06:57.915+00:002011-03-26T14:06:57.915+00:00I offered your problem to my structural engineer d...I offered your problem to my structural engineer dh, and he said:<br /><br />(1) Circles have nothing to do with it.<br /><br />(2) If you get it cold enough, it would probably fit just fine. Steel expands and shrinks quite a bit. If they measured it in the summer, but you installed it in the winter, you might not notice. Until next summer rolled around.<br /><br />(3) If you hung it over the Grand Canyon, you could use the catenary. Bumping upward, though, he thought the rail was more likely to try for a parabola, although the two curves might be close enough that it wouldn't matter which you used.<br /><br />(4) If you were installing it in space or somewhere that gravity didn't affect it and it had room to wiggle a bit, it might do a sine wave.<br /><br />(5) As originally written, however, the rail would buckle under its own weight in ways he wasn't the least bit interested in calculating. Sounded too much like work!Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2433841880619171855.post-35825631958790050692011-03-26T11:26:14.178+00:002011-03-26T11:26:14.178+00:00Then brace yourself, young man... about time for t...Then brace yourself, young man... about time for this ol' cowboy to ride off into the sunset....Pat's Bloghttps://www.blogger.com/profile/15234744401613958081noreply@blogger.comtag:blogger.com,1999:blog-2433841880619171855.post-36214172076251382712011-03-26T11:12:49.353+00:002011-03-26T11:12:49.353+00:00Sheesh Pat you gave me a scare with the title of t...Sheesh Pat you gave me a scare with the title of this post. I was afraid "Hanging it up" meant you were going to announce your retirement. Woo, glad I was wrong. :-)Steven Colyerhttps://www.blogger.com/profile/10435759210177642257noreply@blogger.com