ISO 22390 Timber structures — Laminated veneer lumber Test Machines
Laminated veneer lumber (LVL) is being produced in many countries under different national standards and these products are being exported from one country to another. While the national standards have many similarities, there are also many areas of dissimilarity. Thus, there is a need for the development of this International Standard to establish consistency between these standards in order to ensure the suitability of LVL for structural end-use applications, regardless of country of manufacture or country of end use. It is intended for this to have value to industry, consumers, governments and distributors.
This International Standard specifies requirements for establishing the characteristic properties of structural laminated veneer lumber (LVL), including 5th percentile strength values, stiffness characteristics and other performance characteristics, related to its end use as a structural product for dry use (bonding class 1). It is applicable to members used in flatwise or edgewise bending orientations.
It does not cover the assessment of formaldehyde requirements, biological durability, fire performance or manufacturing, such as quality control and marking.
ASTM D6815-09, Standard Specification for Evaluation of Duration of Load and Creep Effects of Wood and Wood-Based Products
MAFF Notification No. 701, Japanese Agricultural Standard for Laminated Veneer Lumber
Veneers
Bonding quality
Dimensions and tolerances
Test methods
Edgewise bending strength
Flatwise bending strength
Tension strength parallel to the grain
Compression strength parallel to the grain
Shear strength (edge) related to edgewise bending
Shear strength (flat) related to flatwise bending
Compression strength perpendicular to the grain
Stiffness
Modulus of elasticity in edgewise bending
Modulus of elasticity in flatwise bending
Modulus of elasticity in tension parallel to the grain
Modulus of elasticity in compression parallel to the grain
Density
Moisture content
Species equivalency for connection properties
Creep and duration of load effects
ISO 10033-1, Laminated veneer lumber — Bonding quality — Part 1: Test methods
ISO 10033-2, Laminated veneer lumber — Bonding quality — Part 2: Requirements
ISO 13910, Structural timber — Characteristic values of strength-graded timber — Sampling, full-size testing and evaluation
ISO 16572, Timber structures — Wood-based panels — Test methods for structural properties
ISO 16979, Wood-based panels — Determination of moisture content
EN 408-03, Timber structures — Structural timber and glued laminated timber — Determination of some physical and mechanical properties
ASTM D143-09, Standard Test Methods for Small Clear Specimens of Timber
ASTM D198-09, Standard Test Methods of Static Tests of Lumber in Structural Sizes
ASTM D4761-05, Standard Test Methods for Mechanical Properties of Lumber and Wood-Base Structural Material
ASTM D5456-06, Standard Specification for Evaluation of Structural Composite Lumber Products
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