Profile of slots cut in flanges for 10mm particleboard webbed I-beams

"In December 1987, an investigation was carried out for the Australian Particleboard Research Insititue (APRI) on the strength and stiffness characteristics of "matched" particleboard webbed and plywood webbed I-beams which incorporated a finger joint profile in the web/flange interface. Results from the study indicated that investigations should be carried out to determine the most practicable and effective slot profile in flanges for such beams. An experimental program was developed to investigate the suitability of square profile flange slots to house 10 mm particleboard (nominal size). Results showed that a flange slot width of from 10 mm to 10.15 mm gave the greatest ultimate strength in tension for the 10.15 mm particleboard web. Tests were carried out in August 1988."--p. i.