Abstract
SYNOPSIS This paper investigates whether the new South African visual grading rules can be used to grade Malawian Pinus patula. Malawian Pinus patula was visually graded to the revised South African softwood visual grading rules for V5, V7 and V10. Three different sizes of timber, namely 50 x 75,50 x 100 and 50 x 150 mm were sampled. The visually graded timber was examined for correct grading by an inspector from the South African Bureau of Standards. All test specimens were trucked to the University of Pretoria where they were tested for bending, compression and tension strength. The results of the investigation are presented and discussed. Malawian Pinus patula appears to be superior to South African pine when visually graded to the South African visual grading rules. Although the number of specimens was limited, the authors feel that it would be safe to adopt the South African rules even though they penalise the Malawian pine.
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