What is the required adhesive for LVL?

Boiling Water Proof (BWP) type synthetic resin adhesive conforming to IS 848 is mandatory. (Clause 4.2)

What is the acceptable moisture content for LVL?

The moisture content must be between 5% and 15% at the time of manufacture. (Clause 6.2)

LVL is graded by its Modulus of Elasticity (e.g., Grade E12) or its Bending Strength/Modulus of Rupture (e.g., Grade S45), as specified in Table 1.

What is the main advantage of LVL over solid timber?

LVL is an engineered product with more uniform and predictable strength properties, and it can be manufactured in larger dimensions than is typically possible with solid sawn timber.

IS 14616

: 1999

Laminated veneer lumber - Specification

CurrentSpecializedSpecificationBIMStructural Engineering · Wood and Other Lignocellulosic Products

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This standard specifies the requirements for Laminated Veneer Lumber (LVL), an engineered wood product used for structural applications. It covers materials (veneers, adhesives), manufacturing, dimensions, physical and mechanical properties, testing procedures, and marking.

Laminated veneer lumber - Specification

Quick Reference Values

Moisture Content Range5 to 15 %

Required Adhesive TypeBoiling Water Proof (BWP) conforming to IS 848

Minimum MOE (Grade E12, edgewise)12000 N/mm²

Minimum MOR (Grade S45, edgewise)45 N/mm²

Thickness Tolerance (up to 50mm)±1.0 mm

Maximum Swelling in Water (24h)12 %

Practical Notes

LVL is a directional material; always install members with the grain oriented for maximum strength as per design (usually edgewise for beams).

Use Boiling Water Proof (BWP) grade Phenol Formaldehyde (PF) adhesive, especially for any members exposed to moisture, to prevent delamination.

Protect LVL from weather during storage and construction to maintain its specified moisture content and structural integrity.