I-joist

Standard joist (beam) depths (H) range from 200 mm to 600 mm. Maximum length is 12.4 m. Size tolerances, measured at moisture content equivalent to 17 % in the flanges: Overall beam depth H: ± 1 mm Flange width and depth: ± 1 mm Web thickness: ± 0,5 mm Maximum moisture content by the time of assembly is 18 % for the timber flanges and 10 % for the web boards.