Chatoyance was measured by the chatometry.com team using the PZC method. The statistics for this specific timber are hereby summarized to provide an evaluation of data robustness:
Number of sources for samples: 7
Number of individual trees analyzed: 7
Number of specimens: 14
Number of measurements: 45
Max PZC read (of all measurements): 15.3
Min PZC read (of all measurements): 9.7
Max PZC average on one log: 13.2
Min PZC average on one log: 10.7
PZC Average of all logs: 12.0

Species: thuja plicata
Family: Cupressaceae
Clade: Gymnospermae
Description: Thuja plicata (Western Redcedar) is a large, aromatic coniferous tree native to the Pacific Northwest, characterized by its flattened, scale-like, dark green foliage and reddish-brown, shredding bark.
Other Local Names: Riesenlebensbaum, Cedro canadiense, Western red cedar, Cèdre rouge d’Amérique

Reference Colour: Red brown
Texture: Medium
Grain: Straight
Interlocked Grain: Absent
Notes: The texture for plantation woods is often less fine. Wood may have numerous small knots.

Diameter: 50÷120cm
Density @12% MC: 380kg/m³
Janka Hardness: 330lbf
Crushing Strength @12%MC: 33MPa
Static Bending Strength @12%MC: 59MPa
Longitudinal Modulus of Elasticity E: 8.8GPa
Volumetric Shrinkage Coefficient: 0.29% per %
Total Tangential Shrinkage TS: 5.5%
Total Radial Shrinkage TS: 2.2%
T/R Anisotropy Ratio: 2.5-
Fibre Saturation Point: 24%
Thermal Conductivity: 0.14W/mk
Sapwood Thickness: 2÷4cm
Sapwood Demarcation: Clearly demarcated

Resistance to Decay: Class 2 – durable
Resistance to Dry Wood Borers: Class D – durable (sapwood demarcated, risk limited to sapwood)
Resistance to Termites: Class S – susceptible RED CEDAR Cross sections of Thuja plicata
Treatability: Class – 3-4 – poorly or not permeable
Use Class Covered by Natural Durability: Class 3 – not in ground contact, outside
Durability Notes: This species is listed in the NF EN 350 standard. Use class 3 only covers wood components without sapwood. Plantation woods, which are exploited younger, are less resistant to fungi (Class 3: moderately durable). According to the European standard NF EN 335 of May 2013, performance length might be modified by conditions in which it is used.

Log Buoyancy: Floats
Log Conservation: Good
Drying Rate: Normal
Drying Risk of Distortion: No risk or very slight risk
Drying Risk of Case Hardening: No known specific risk
Drying Risk of Checking: Slight risk

Blunting Effect: Normal
Machining Tool: Ordinary
Suitability for Peeling: Good
Suitability for Slicing: Good
Sawing Machining Notes: Use of stellite-tipped saw blades is recommended for sawing green wood. The presence of chemical corrosive agents has a pronounced blunting effect.
Assembly Nailing Screwing: Poor
Assembly Notes: Very prone to splitting: pre-holes are needed for nailing and screwing. For uses in humid areas and because of wood’s acidity, it is recommended to have stainless nails or screws.
Additional Notes: Wood used for outside fittings: terrace, play grounds, pool decking etc. Low density, and sensitive to stamping, but offers interesting mechanical properties and durability
End Uses: Shingles, Interior joinery, Framing, Moulding, Open boats, Poles, Musical instruments, Exterior panelling, Stringed instruments, Sculpture, Panelling, Marquetry, Exterior joinery

Source 1: Tropical Timber Atlas, Editions Quae, e-ISBN 978-2-7592-2770-9