Drawing Index

Deerfield & Roundabout Railway Track & Wheel Data

Allowance For Expansion When Laying Rails.

  1. When laying rails their temperature shall be taken by applying a thermometer to the rail base on the side away from the sun, and taken periodically during the day as the temperature of the rail can change decidedly from early morning hours to the later afternoon hours, in winter as well as in summer time laying.
  2. To allow for expansion when laying rails, the distance between the ends of rails shall be as designated in Table No. 1.
  3. If necessary a shim of appropriate thickness shall be used between ends of rails to ensure that the distance specified in Table No. 1 is not altered by track construction or maintenance operations. Shims must remain in joints until it has been ascertained that continuing track construction or maintenance operations will not alter the distance between ends of rails.

Document DRTRK37   Table No. 1   Revision 04-26-2009

Drawing Index