Species
Western Red Cedar
Thuja plicata · DC 2 (durable)
View full record →The diagram below shows every direct connection this node has in the graph. Each line is one edge; expand a neighbour group below to read exactly why that connection exists and which standard or dataset it comes from.
Degradation agent (5)
- Fungal rotresists well
WI-SL resistance profile: bio = 78/100 (ordinal, from EN 350 durability class, extractive chemistry and movement).
Source: WI-SL v1.2.0
- UV degradationmoderately resists
WI-SL resistance profile: uv = 54/100 (ordinal, from EN 350 durability class, extractive chemistry and movement).
Source: WI-SL v1.2.0
- Mould & blue-stainresists well
WI-SL resistance profile: moisture = 74/100 (ordinal, from EN 350 durability class, extractive chemistry and movement).
Source: WI-SL v1.2.0
- Marine borers & salt attackmoderately resists
WI-SL resistance profile: salt = 62/100 (ordinal, from EN 350 durability class, extractive chemistry and movement).
Source: WI-SL v1.2.0
- Freeze-thaw cyclingmoderately resists
WI-SL resistance profile: freezeThaw = 66/100 (ordinal, from EN 350 durability class, extractive chemistry and movement).
Source: WI-SL v1.2.0
Standard (2)
- EN 350 — Durability classes of heartwood against wood-destroying fungidurability class from
Declared durability class "DC 2 (durable)" follows the EN 350 Annex B five-step scale.
Source: en350-dc
The Carbon sub-score for Western Red Cedar in WI-INDEX v1.0.0 (generated 2026-08-03) cites this standard.
Source: en16449
Climate zone (2)
- Riyadh, Saudi Arabiarecommended for
Riyadh, Saudi Arabia lists Western Red Cedar among its recommended species given Extreme UV and thermal cycling cause rapid lignin breakdown, surface checking and pigment failure.
Source: wood.ts:climates[].recommended
- Pacific North-West, USArecommended for
Pacific North-West, USA lists Western Red Cedar among its recommended species given Long wet seasons with low drying potential; algae bloom on shaded elevations.
Source: wood.ts:climates[].recommended
Project (1)
- Timber Assembly Hall← built in
Timber Assembly Hall is recorded as using Western Red Cedar (Clear intumescent, interior grade).
Source: wood.ts:projects[]
How edges in this graph are derivedWI-GRAPH v1.0.0
Species → agent edges come from the WI-SL resistance profile (0–100 ordinal scale derived from EN 350 durability class, extractive chemistry and movement). ≥70 is read as "resists well", 45–69 as "moderately resists", below 45 as "is vulnerable to".
Climate → agent edges fire when a climate's driver value (UV, humidity, salt or freeze-thaw load) is 60 or above, read directly from the climate dataset.
Treatment → agent / standard edges come from the paraphrased standards corpus used across the site (EN 927-1, EN 351-1, EN 350 clause 4, EN 13501-1).
Species → standard edges reuse the exact source list already published for each Global WoodIntel Score sub-score.
Machine-readable: GET /api/public/v1/graph?node=species-western-red-cedar · CC BY 4.0