Wash. Admin. Code § 51-54A-0806
806.1.1 Restricted occupancies. Natural cut trees shall be prohibited in the following occupancies:
1.Group I; and
2.R-2 occupancies providing licensed care to clients in one of the categories listed in the International Building Code, Section 310.1, licensed by Washington state.
806.1.2 Support devices. The support device that holds the tree in an upright position shall be of a type that is stable and that meets all of the following criteria:
1.The device shall hold the tree securely and be of adequate size to avoid tipping over of the tree.
2.The device shall be capable of containing a minimum supply of water in accordance with Table 806.1.2.
3.The water level, when full, shall cover the tree stem at least 2 inches (51 mm). The water level shall be maintained above the fresh cut and checked at least once daily.
Table 806.1.2 Support Stand Water Capacity
Tree Stem Diameter (inches) | Minimum Support Stand Water Capacity (gallons) | Typical Daily Water Transpiration Amount (gallons) |
Up to 4 | 1 | 1/4 to 1 |
4 to 6 | 1 1/2 | 1 1/4 to 1 1/2 |
7 to 8 | 2 | 1 3/4 to 2 |
9 to 12 | 3 | 2 1/4 to 3 |
13 and over | 4 | Over 3 |
Tree Stem Diameter (inches)
Minimum Support Stand Water Capacity (gallons)
Typical Daily Water Transpiration Amount (gallons)
Up to 4
1
1/4 to 1
4 to 6
1 1/2
1 1/4 to 1 1/2
7 to 8
2
1 3/4 to 2
9 to 12
3
2 1/4 to 3
13 and over
4
Over 3
Wash. Admin. Code § 51-54A-0806
Statutory Authority: RCW 19.27A.031, 19.27.074 and chapters 19.27 and 34.05 RCW. 13-04-063, § 51-54A-0806, filed 2/1/13, effective 7/1/13.