As primary support component, Hirakaku must tolerate high stress and loads. Douglas Fir and Hemlock's proven ability to withstand these forces make it an excellent choice for this application. The Hirakaku standards have been developed to ensure performance and strength.
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Minimum Standards:
- In non-seasoned shipments a minimum of 30% of the pieces must be free of heart centers to enhance lineal stability.
- Decadent characteristics such as unsound wood and honeycomb are not allowed in any of the Quality Assurance Standards. This is particularly important in applications where the product may be exposed to a wide range of ambient atmospheric conditions.
- To ensure true installations, bow is limited to a maximum of .2%, and no twist is allowed at all.
Hirakaku from Interfor is available in a wide range of sizes. Contact us for specific inquiries.