Researches revealed the unit volumes and weights at air-dry condition (12% MC) of different poles, anchor logs and crossarms species of REB from this world. The softwood products are lighter than hardwood products. Inversely the unit volumes of softwood poles are higher than those of hardwood poles. Red pine (Pinus resinosa), radiata pine (Pinus radiata), blue pine (Pinus wallichiana), fir (Abies densa) and spruce (Picea spineelosa) are the lightest poles and anchor logs with higher unit volumes (Poles). Sundri (Heritiera minor) is the heaviest timber species out of all listed timber species and raintree (Samanea saman) is the lightest timber species among hardwood species.

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