Bossé

PHYSICAL AND MECHANICAL PROPERTIES

These properties can vary significantly depending on the origin and growing conditions of the wood.

• Density *: 0.63
• Monnin hardness *: 4.2
• Coef. Volume shrinkage: 0.45
• Stability in service: stable
• Total radial shrinkage: 4.1%
• Fiber saturation point: 31%
• Total tangential shrinkage: 6.8%

(*: 12% humidity)

NATURAL DURABILITY AND IMPREGNABILITY OF WOOD

• Mushrooms: cl 2 – durable
• Dry wood insects: durable; distinct sapwood (risk limited to sapwood)
• Termites: class S – susceptible
• Impregnability: 4 – not impregnable
• Biological risk class: 3 – out of contact with the ground, not sheltered

BOSSÉ clear is moderately durable against fungi. Dark Bossé is durable.

SAWING AND MACHINING

• Blunting effect: quite significant
• Teeth for sawing: stellate teeth
• Machining tools: tungsten carbide

The silica content of G. Cedrata can be high to very high. Irritating dust.

ASSEMBLY

• Nailing – Screwing: good hold
• Gluing: correct

Pre-boring may be necessary for G. Thompsonii due to its hardness. Bonding G. Cedrata can be difficult due to resin exudation.

USES

Filling is recommended in order to obtain a better finish. Resin exudation can interfere with some jobs.

exterior and interior carpentry

• paneling
• siding
• shipbuilding
• furniture
• roller shutters
• parquet
• light frame

Main known uses to be validated by implementation in accordance with the rules of the art. Important note: some uses are mentioned for information.

Source: CIRAD – ATIBT

REACTION TO FIRE

• French conventional classification: thickness> 14 mm: M.3 (moderately flammable) thickness <14 mm: M.4 (easily flammable)
• classification according to euroclasses: D s2 d0 This default classification concerns solid woods meeting the requirements of standard NF EN 14081-1 appendix C (May 2006), used in vertical walls. Namely structural wood, classified, with a minimum average density of 0.35 and a minimum thickness of 22 mm.