Booking sheets, 2011 v1

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Booking sheets, 2011 v1

  1. 1. Booking Sheets<br />Rise & Fall Method <br />
  2. 2. Recording your levels – Rise & Fall Method – copy readings on a piece of paper<br />BM –1st reading taken was 2.250 (this is a back sight)<br />(D) Last reading taken was .486(which is a foresight)<br />(C) 5th reading taken was 2.400( a foresight)<br />2nd reading taken of <br />2.825 (this is a intermediate site)<br />BM<br />C<br />D<br />A<br />(B) 3rd reading taken was 1.976(which is a foresight)<br />(C) 6th reading taken new instrument position was 1.880 (which is a back sight)<br />B<br />(B) 4th reading taken new position of instrument was 2.120 (which is a back sight)<br />Now we’ll have a look at how they go onto a booking sheet<br />Triangles indicate instrument positions<br />Letters indicate staff positions<br />
  3. 3. Completed booking sheet example<br />
  4. 4. First Remember the rules for completing the booking sheet<br />The first reading you take is always a Backsight (BS)<br />The last reading you take is always a Foresight (FS)<br />The readings you take in between are Intermediate sights (IS)<br />
  5. 5. Completing the sheet – step 1<br /><ul><li>First lets complete the readings in their appropriate boxes
  6. 6. back sight at BM first
  7. 7. Then intermediate site, one line down
  8. 8. Then foresight one line down again
  9. 9. Then our instrument is moved (c.p. change point), our first reading from here is a backsight, but still goes on the line for staff reading B – etc. complete the rest
  10. 10. In the remarks column you can also note the staff reading points, A,B,C, etc.</li></li></ul><li>Completing the sheet - step 2<br /><ul><li> Next calculate the rise and fall
  11. 11. This is simply deducting one reading from the previous and posting the answer in the rise & fall column
  12. 12. eg. 2.250 – 2.825</li></ul> = negative .575<br /><ul><li> Negative results are falls
  13. 13. Positive results are a rise</li></li></ul><li>Step 3 Check – Before you calculate the RL<br /><ul><li>The next step is to balance the sheet so far
  14. 14. Total the columns
  15. 15. Take FS away from BS
  16. 16. Take Fall away from Rise
  17. 17. Both Answers should EQUAL !</li></li></ul><li>Completing the sheet – step 4<br /><ul><li>Next work your way down the readings, either deduct the fall or add the rise
  18. 18. eg. 47.195 - .575 = 46.620
  19. 19. 46.620 + .849 = 47.469 and so on
  20. 20. Now calculate the RL
  21. 21. BM is given at 47.195, put this into your calculator</li></li></ul><li>Completing the sheet – step 5<br /><ul><li> The last step is to balance the rest of the sheet “RL’s”
  22. 22. Take the last RL away from the first</li></ul>Again All Answers should EQUAL !<br />
  23. 23. Review the completed booking sheet<br />

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