Development of laminated planks from southern pine lumber

Yang, Bonnie Zhuo; Shmulsky, Rubin; Seale, R. Daniel

doi:10.1007/s00107-015-0915-z

Cited by 4 publications

(2 citation statements)

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“…The glue laminated billets use low grade thin (4" × 4" thick) lumber and are essentially an engineered substitute for solid timber in mat applications. Yang et al (2015) evaluated the performance of laminated pine lumber billets, where number 3 grade pine structural dimension lumber was prepared, face laminated as butt-jointed glulam, and tested in bending to determine bending strength and stiffness properties for potential use in access matting. This type of application provides a potential outlet and market for what is typically a relatively low-value material.…”

Section: Introductionmentioning

confidence: 99%

Strength and stiffness of 8-Inch and 12-Inch deep mixed oak bolt-laminated timber mats

Shmulsky

Lopes

Rodrigues

et al. 2021

BioRes

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Ground support provided by crane mats ensures the safety of workers and integrity of heavy-duty machines. Analytical evaluation of timber mats is necessary to advance the development of engineering standards associated with wood-based as well as other types of mats. The goal of this study was to mechanically evaluate bending stiffness and strength of timber 8-inch and 12-inch deep mixed oak bolt-laminated timber mats. The 8-inch-deep specimen dimensions were 24 inches wide and 12 feet long, while 12-inch-deep specimens were 24 inches wide and 18 feet long. Twenty-eight specimens of each depth were flexurally tested over a 17:1 span to depth ratio. The modulus of elasticity along with the parametric and non-parametric design strength values are presented herein. The characterization of timber crane mats by analyzing their mechanical properties provides a starting point for producers and users to understand the performance and applications of their product. Further research will allow investigation of alternative materials, sizes, and structural designs.

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Section: Introductionmentioning

confidence: 99%

Strength and stiffness of 8-Inch and 12-Inch deep mixed oak bolt-laminated timber mats

Shmulsky

Lopes

Rodrigues

et al. 2021

BioRes

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“…Past research has examined the mechanical performance of sawn hardwood timber mats (Owens et al 2020). Yang et al (2015) studied face-laminated pine lumber beams as a raw material that was intended for use in bolt-laminated mats. Prior to that study, Shmulsky and Shi (2008) investigated face-laminated low-grade hardwood lumber for use in bolt-laminated mats.…”

Section: Introductionmentioning

confidence: 99%

Strength and stiffness of 3-ply industrial bamboo matting

Shmulsky

Correa

Quin

2021

BioRes

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There is a pressing need to develop engineering standards for timber- and other wood-based mats suitable for supporting construction vehicles, etc. In 2018, a group of mat producers and users began discussing a potential grading standard specific to mats. There are large gaps in the literature regarding the performance of the available raw materials as well as bolt-laminated mat systems. This study addresses the issue of determining the strength and stiffness values of a commercially sourced industrial bamboo mat. A total of seven 8 ft × 14 ft (2.44 m × 4.27 m) commercial bamboo mats were cut into 28 billets that were 21.5 in (54.6 cm) in width. The bamboo mat billets were evaluated for bending stiffness (modulus of elasticity [MOE]) and strength (modulus of rupture [MOR]) using a three-point static bending test. The 5th percentile non-parametric tolerance limit (5% NTL) and design value for fiber stress in bending (Fb) were calculated. The mechanical property values measured for the 3-ply bamboo mat were at least 25% less than values reported for mixed hardwood timber mats. This type of structural performance information is helpful and useful in the development of matting standards, as it describes the minimum performance characteristics for this type of composite matting.

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Flexural Properties of Three-Ply Bolt-Laminated Pine Mats

Khademibami¹,

Ward²,

Seale³

et al. 2023

Forest Products Journal

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In the current study, three-ply bolt-laminated southern pine (Pinus sp.) 244 by 427 cm (8 by 14 ft) mats were evaluated. Mats were destructively tested in ⅓-point bending on a universal testing machine according to ASTM International standards. Twenty-eight unique specimens were destructively tested, and mean modulus of rupture (MOR) and modulus of elasticity (MOE) were calculated. According to the results both MOR and MOE values for the specimens were highly uniform. The mean MOR was 11.74 MPa (1,704 psi) and the mean MOE was 1,144 MPa (0.166 × 106 psi). Additionally, the values of parametric and nonparametric Fb (design fiber stress in bending values ) were reported as 4.05 MPa and 4.54 MPa (588 psi and 659 psi), respectively. The mechanical properties of these three-ply pine mats were also compared with other studies of mats from other species groups and design architectures.

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Development of laminated planks from southern pine lumber

Cited by 4 publications

References 1 publication

Strength and stiffness of 8-Inch and 12-Inch deep mixed oak bolt-laminated timber mats

Strength and stiffness of 8-Inch and 12-Inch deep mixed oak bolt-laminated timber mats

Strength and stiffness of 3-ply industrial bamboo matting

Flexural Properties of Three-Ply Bolt-Laminated Pine Mats

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