CODE OF PRACTICE FOR STRUCTURAL USE OF TIMBER: PART 3 : PERMISSIBLE STRESS DESIGN OF GLUED LAMINATED TIMBER
Glued laminated timber (glulam) should be manufactured in accordance with MS 758 : 2001 and Clause 4. All timber used for laminated members should be strength graded in accordance with BS 5756 or equivalent Malaysian Standard.
NOTES:
1. The stresses given in this part of MS 544 apply only to timber graded in accordance with BS 5756 with respect to structural tropical hardwoods. Because this standard is primarily for solid structural timber, manufacturers of glued laminated timber may need to specify overriding requirements for wane, fissures and distortion. In deriving the recommended stress for timber, estimates of 5 % lower exclusion values of the strength and stiffness were used. Furthermore, the modulus of elasticity values no longer included element due to shear.
2. Grade and species for glulam that satisfy the requirement for strength classes are given in Table 1. Glulam strength properties may be determined from the strength class properties given in Table 2.
