Overview
ISO 7567:2024 - Bamboo structures - Glued laminated bamboo - Product specifications defines minimum product requirements for glued laminated bamboo (GLB) components intended for structural use. It covers raw material selection, laminate geometry, adhesive performance, manufacturing and factory quality control, and testing references. While Moso (Phyllostachys edulis) is the common raw material, the standard also applies to other species (e.g., Guadua angustifolia, Dendrocalamus asper) if equivalent performance can be demonstrated.
Keywords: ISO 7567, glued laminated bamboo, bamboo structures, structural bamboo, product specifications
Key technical topics and requirements
- Scope and applicability
- Requirements apply to glued laminated bamboo members for structural use across service classes; special precautions required for service class 3 (fully exposed conditions).
- Bamboo strip requirements
- Strips (lamina) must permit straight splits and be free from damage, decay and insect attack.
- Typical minimum dimensions: length at least 2 000 ± 3 mm and width at least 16 ± 0.1 mm (for fabrication).
- Maturity: species-specific optimal maturity; for most suitable species the note indicates ~4–7 years.
- Dry density: greater than 0.50 g/cm³.
- Adhesives
- Adhesives must meet ISO 20152‑1 bond performance requirements.
- Weather-resistant adhesives and special adhesive choices are required for service class 3.
- Formaldehyde‑containing adhesives require attention (informative Annex C on formaldehyde emission).
- Performance and manufacturing
- Glue line integrity, shear strength, and delamination performance are specified and tested (see normative test methods).
- Extension joints geometry, surface preparation and staggering rules (e.g., adjacent boards’ extension joints to be staggered by at least the greater of 10w and 2h) are required to maintain structural continuity.
- Factory production quality control requirements and gluing records are specified (Section 8).
- Referenced test methods
Practical applications and users
Who uses ISO 7567:
- Bamboo product manufacturers and fabricators producing glued laminated bamboo beams, columns and panels
- Structural engineers and architects specifying GLB for load‑bearing elements
- Building code authorities and certification bodies evaluating compliance
- Test laboratories performing glue‑line and material property tests
- Procurement/specification writers and material suppliers
Typical applications:
- Engineered bamboo beams, columns, trusses, and prefabricated structural components for buildings and infrastructure - both interior (service classes 1–2) and exterior/exposed uses (service class 3 when using weather‑resistant adhesives).
Related standards
ISO 7567:2024 provides a practical, test‑based framework for producing reliable glued laminated bamboo products suitable for structural use, with guidance on materials, adhesives, manufacture and quality control.