Spike's Calculators

Logging

Brereton - Metric

Spike VM

The metric version of the Brereton log rule calculates the volume of a log in cubic metres.

Two diameter measurements shall be taken under bark at each log end perpendicular to each other (at both ends), and the final recorded diameter shall be the average of the two measurements in centimetres.

Lengths shall be measured along a straight line parallel to the log's central axis and recorded to the nearest lower full odd or even centimetre.

Diameter Measured Inside Bark = DIB
Average = Small End plus Large End Divided by Two
Length of Log in Meters M
DIB Average cm

Results:

Cubic Meter:
Cubic Foot: ft³

Calculator

  1. enter the length of the log in metres
  2. enter the average diameter of the log in centimetres

Results

  1. the cubic metre volume of the log
  2. the cubic foot volume of the log

Formula used:

V = 0.7854 * D² * L ÷ 10000
where
V = the volume in cubic metres (m³)
D = the average diameter measurement from both ends in centimetres (cm)
L = the length of the log in metres (m)

If you have any questions or comments please Contact Us
Privacy Policy
© 1998, VmNet.