In remote areas how are railroad tracks bent to accommodate curves.?
611307
The above is not true... There's no way to transport sections of bent rails!!!! (<meaning regular sections)\n\nInre to the added above: The rail you saw could've been used, for a tight switch, or as part of a welded rail train on a curve. Railroads buy rail in bulk -- far too much to special order radii. \n\nRails at length are really somewhat flexible - they aren't rigid horizontally - you can bend them by hand (well multiple hands).\n\nIn the old days they were bent on site by the track gang -- stick rail came in 39' sections (to easily fit in 40' gondolas) and before that came in shorter sections. Lay the ties and plates, attach the rail, put the joint and spike the end, and use long mauls by hand to bend and spike it down to the curvature.\n\nAll the figuring is done before hand by laying the ties to the proper radius and making the elevation of the curve.\n\nToday, welded rail in 1000 foot (sometimes more, sometimes less, a lot less for spot repairs) is in use, and it is layed and secured and is simply bent as its laid like a big ribbon (it is nicknamed ribbon rail) -- all rail can easily be curved -- it is not rigid.\n\nSwitches take more work but are done essentially the same way. The big piece where the inside rail crosses the outside is called a "frog" - those come in different numbers for different turnout radii. The movable points of the switch are "bent" when thrown -- thats right, no joints. Slang for throwing a switch is "bending the iron" because that is what you are doing..\n\nHere's a picture:\n\nLook straight to the left and above where the switch stand BEHIND where the guy is, just below the yellow track equipment:\n\nhttp://photos.nerail.org/showpic/?photo=2006051513574922304.jpg
228385
The gravel you noted on the tracks may serve a lot of purposes. \n\n1. It allow a faster way to drain water off the tracks when it rains hard and keeps water from forming puddles, also allowing it to dry faster.\n2. It prevent weeds from growing on the tracks.\n3. It allows the wooden Ties to expand and contract.\n4. It helps differentiate the tracks from the surroundings.\n5. It is used as an absorber for the vibrations, and sound.\n6. It helps level the ground and the Ties so that no one trips and fall over them seriously (specially to those who should know better not to be on the tracks if they have no real reason to be on it, anyway, it is very dangerous).\n7. It is used as a spark arrester.\n8. It is an effective way to conceal some chemical spill that may be normal of a train engines everyday operations; like, hydraulic fluids, oil, and fuel.\n\nThere are many more uses, these are just some, I can think of so far.\n~meow
974637
That is a good question, it's mainly an illusion but I'm not sure why they looked curved though.
724453
Curve, in common usage, line that bends continuously and smoothly, that is, without angles, as distinguished from straight or broken lines. Defined mathematically, however, a straight line is also a curve. Only the straight line. Connected straight lines are not curves.
177456
Flat then you can make it curved
569519
Take a look at this:\n\n\nYou might also contact the builder or a company like Mondo, whick makes tracks for facilities all over the world
822597
in the plane,\nthere are two kinds of curvature,\nthe regular one, which is the norm of the second derivative, if the curve has unit tangent.\nand the signed curvature, which in addition measures if the first derivative and the second derivative preserve orientation.\ns
1129920
because they run on rails.. not roads.. they have the same traction on each rail.. roads can vary.. they also don't make as tight of turns as cars do.
580607
Technically, anthing touching the ground is grounded.  A train is designed to take a lightening hit, with the exterior metal shell directing currents around internal passangers/freight and through the wheels into the ground.  No worries.
964062
Hi. It is bent at any height above zero. Look at the horizon from a spacecraft and you'll see this. The bending gets reduced as you approach zero height, at which point it is a flat circle.
770231
Nice.  Now, to answer your question...\n\nThe previous post pointed out that there will be more lines in a mountainous area than on a plain, IF the contour intervals are the same.\n\nSince the lines are further apart on a plain, the mapmakers have the opportunity to decrease the contour interval to provide more detail.  In a mountainous area, decreasing the contour interval would make the map unreadable, since there would be too many lines.
929828
In reality States are responsible for repair within the limits of the State, sometimes they spend the money in something else and procrastinate such repairs, now railroads are not part of the States budget, they are private enterprises in which the owners decide whether they fix the rails or buy new coaches, I hope you get an A on your project..☺
333312
Basically:\n\nScreen at eye level, or just below.\n\nElbows rest at a height that makes them be bent at 90 degree angles.  Typing is not uncomfortable.
160893
Are you thinking of CURVES?
600420
Here you go...I hope this is informative enough!!!! Good Luck!!!\n\nhttp://www.dirtwerkz.com/Pages/tracks/northerncaliforniatracks.html
821179
It depends on the geometric shape of the land.
564572
Because of the curvature of the earth.