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New Zealand Journal of Forestry (2016) 60(4): 37–43
©New Zealand Institute of Forestry

Refereed article
Variability in JAS/tonne values

John Ellis *,1

1 Group Technical Manager, C3 Limited, Tauranga. Email: johne@scaling.co.nz
*Corresponding author.

Abstract: This paper shows how weight estimates, Japanese Agricultural Standard (JAS) volume, true volumeto- weight conversion and scaling affects JAS/tonne values. Three years of data collected from a port and weighbridge operations are used to show the magnitude of changes in JAS/tonne values. It is concluded that JAS and basic density have a significant effect on JAS/ tonne. There is also a statistically significant change in truck tare weight by season and time of day. Therefore load weight based on estimated tare also affects the JAS/ tonne ratio.
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