COMPARISON OF LOG VOLUME ESTIMATES USING FORMULAS FOR LOG CENTER OF GRAVITY AND CENTER OF VOLUME

Formulae for estimating log center of gravity for logs of uniform dens ity are presented that are based on frusta of simple solids of revolut ion. The center of gravity position for logs shaped as cones, parabolo ids, paracones, neiloids, and logs having intermediate shapes can be e stimated by using these formulae. A comparison of log volume estimates was made using the center of gravity and the center of volume locatio ns as interlog positions for diameter measurements. The center of volu me was found to be better than the center of gravity for log volume es timation. However, formulae for log center of gravity should be useful for engineering applications with logs of uniform density.