Instructions for the Discus

• Officials required
  • "Throwing Circle" Official. Tasks include watching for foul throws, recording measurements and contolling event.
  • "Throwing Sector" Official. Tasks include finding and marking the point of impact of the implement and returning the discus to the circle.
  • "Recording" Official to record performances and write tickets
• Officials must report to the Official Coordinator prior to commencement of the "event day" program to:
  • Sign In
  • Obtain Official Tag
  • Obtain Name Tag
  • Obtain Equipment
• Equipment
  • Sector and circle clearly marked. The discus is thrown from a circle into a sector of 34.92 degrees. The inside diametre of the circle is 2.50 metres. All lines used to mark the circle and sector are 5cm wide. The circle is divided into front and back halves.
  • Measuring Tape (50 metres)
  • Discus
    • 350 gram        Under 6 - 8 Boys & Girls
    • 500 gram        Under 9 - 10 Boys & Girls
    • 750 gram        Under 11 - 13 Girls and Under 11 - 12 Boys
    • 1 kg                  Under 14 - 15 Girls and Under 13 - 15 Boys
  • Spike. To hold zero end of tape at the nearest edge of the mark made by the discus.
  • Place tickets, recording sheets and record sheets.
  • Cloth. to wipe and clean the discus.
  • Broom. To clean inside surface of Discus ring.
• Safety
  • Everyone should stand behind the thrower and the safety cage and the sector should be clear.
  • The discus should be carried back to the circle - never thrown
  • No one should stand on the right side of a right handed thrower attempting to turn, and vice versa.
• To be a valid throw
  • Each athlete is entitled to 4 trials
  • The throw must be commenced from a stationary position
  • The competitor must not leave the circle until the discus has landed
  • The competitor must not touch the top of the circle or the ground outside the circle during the trial with any part of their body. They are allowed to touch the inside of the ring
  • The discus must land so that an inprint mark is within the inner edges of the lines marking the sector.
  • The competitor may enter the circle from any direction (but preferably from the rear half) but must leave from the REAR half of the circle.
  • The athlete may, during the course of each trial, stop and place the discus down in the ring and then recommence the attempt again, providing that this occurs only once in any one trial, and that no other infringement has occurred. If the athlete drops the discus it may not be picked up and shall be recorded as a no throw.
• Method of Measurement
  • Officials select the edge of the imprint mark made by the discus closest to the ring when landing. The selected point is marked by a spike and the zero end of the tape is held by the spike.
  • The tape is drawn tight and through the centre of the circle.
  • The distance is measured at the point where the tape crosses the inner edge of the ring. Each measurement is to the nearest centimetre below the distance thrown unless the reading is a whole centimetre.
  • If the discus hits the cage and deflects back to land in the sector it shall be a valid trial and measured.
• Recording
  • • Each athletes performance is read out by the "Throwing Circle" Official, and that performance is recorded.
    • On completion of the athletes trials, the best performances should be circled or highlighted, and a performance ticket issued.
    • NLAC does not record places on performance tickets for this event.
  • At the completion of the day, all equipment and officials tag should be returned, and your name tag placed in the Officials Prize Box