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To improve the performance and utilization of low grade pine lumber, southern pine (SP) laminated planks (184 mm × 320 mm × 4.29 m) were fabricated and evaluated for construction mats application. The laminated planks were made from No. 3 grade SP lumber and face-laminated with waterproof polyurethane adhesive. Modulus of rupture (MOR, 33.1 MPa), characteristic design value of fiber bending stress...