TIMBER AND TIMBER TREATMENT
PART 1 GENERAL
1.1SECTION INCLUDES
A.Timber for temporary signs, guardrails, and posts, and the preservative
treatment for timber.
1.2RELATED SECTIONS Not Used
1.3REFERENCES
A.AASHTO M 168: Wood Products
B.American Lumber Standard Committee
C.American Wood Protection Association (AWPA)
D.Southern Pine Inspection Bureau (SPIB) Grading Rules
E.Western Wood Products Association (WWPA) Grading Rules
1.4DEFINITIONS Not Used
1.5SUBMITTALS
A.Manufacturer’s product data sheets and recommended installation
instructions, for information.
PART 2 PRODUCTS
2.1STRUCTURAL TIMBER AND LUMBER
A.Refer to AASHTO M 168.
B.Treat, if required, using preservative. Refer to AWPA.
Timber and Timber Treatment
2.2POSTS
A.Temporary Use Sign Posts
1.Surfaced four sides, 80 percent free of heart center, Douglas Fir-
Larch, Grade No. 2 or better.
3.Hem-fir, Lodgepole Pine, Ponderosa Pine, or Southern Yellow
Pine, Grade No. 1 or better.
B.Guardrail Post
1.Use only one species of wood on any one project.
2.Surfaced or rough-sawn posts and offset blocks.
3.Douglas Fir-Larch, Hem-Fir, Lodgepole Pine, Ponderosa Pine, or
Southern Yellow Pine.
4.Grade No. 1 or better.
C.Steel Guardrail Post with Wood Block
1.Routed wood offset block of Douglas Fir or Southern Yellow Pine.
2.Surfaced or rough sawn blocks.
3.Grade No. 1.
2.3TREATMENT
A.Pressure treated wood quality marked by an agency accredited for
inspection of pressure treated wood products by the American Lumber Standard Committee.
B.Meet requirements of AWPA UC4B.
C.Apply field treatment preservatives according to AWPA Standard M4,
Section 7, after field drilling.
PART 3 EXECUTION Not Used
END OF SECTION
Timber and Timber Treatment
Timber And Timber Treatment in other states
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Source: Utah Standard Specifications for Road and Bridge Construction, 2026 Edition. Pages 1180–1181 of 1,331. View official source ↗