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The following are used to determine a track rating:
The objective readings from the Penetrometer are considered along with a subjective visual assessment of the track. The Track Rating is not assessed strictly to a scale of the Penetrometer, Clegg Hammer.
What is the Penetrometer used for?
The primary purpose of these tools is to assist the Racecourse Manager in determining the firmness of the track surface, the profile hardness and the shear strength of the turf. Readings are taken at least two days prior to a race meeting. The readings assist the Racecourse Manager in determining the maintenance regime leading into the meeting. On race morning readings are taken and the results in conjunction with the visual inspection a track rating is posted.
|Measures||Soil resistance to penetration|
|Method||A 1 kilogram weight is released by a trigger action and falls 1 meter down a shaft, which in-turn hits a 1cm square rod into the soil profile. The 1cm square rod has 1cm increments as the measurement for the depth the rod that has entered into the soil profile. This action is undertaken 3 times in the one position, therefore giving 3 readings eg: 2.5, 4.5, 6.5. After all 180 drops have been completed in the 60 different positions around the track, the Penetrometer reading is determined by dividing the total by the amount of drops.|
|No. readings taken total||180|
|No. readings at each drop point||3|
|Higher number =||Soft|
|Lower number =||Firm|
The Stewards and Racecourse Manager usually walk the entire circumference of the track on the day of the race meeting. The visual inspection is subjective and takes into account the turf sward, softness/firmness under the heel, and surface moisture.
Track ratings are not an exact science. Once a rating is determined at a particular time, many variables can then affect this rating and the condition of the track e.g. Wind, humidity, precipitation, dew, fog, sun, cloud, number of runners per race, etc. The track rating may change during a race meeting.
Course Circumference Charts
These charts display the average reading across the track each 100 metres or 200 metres.
400 meters to Winning Post charts
These charts display the average reading for each lane down the straight measured at 2 metre intervals from the running rail.
What are the track ratings?
The ratings are at the time they are determined and are not a forecast.
BRC Trainers at Eagle Farm and Doomben are able to utilise the most diverse training options in Australia.
BRC trainers are able to work their horses at either Doomben or Eagle Farm as they wish.
The daily training fee includes: