Layout Where do we talk about layout I was curious about curve terminology i e the fact that a two degree curve is sharper than a one degree curve and where the degrees are actually measured and what the relationship is to radius I found the answer easily enough with a google search but it clearly ought to be discussed in Wikipedia somewhere along with other details of railway surveying It s somewhat amusing that we ve got a whole article on Track transition curve but no coverage of normal curves at all That I can find Does a Layout or Surveying section in this article make sense I might just get bold and start adding it