Part 1 — General
1.1 Section Includes
A.Timber for temporary signs, guardrails, and posts, and the preservative treatment for timber.
1.2 RELATED SECTIONS Not Used
1.3 References
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
1.4 DEFINITIONS Not Used
1.5 Submittals
A.Manufacturer’s product data sheets and recommended installation instructions, for information.
Part 2 — Products
2.1 Structural Timber and Lumber
A.Refer to AASHTO M 168.
B.Treat, if required, using preservative. Refer to AWPA.
2.2 Posts
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.
2.3 Treatment
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
Timber And Timber Treatment in other states
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Source: Utah Standard Specifications for Road and Bridge Construction, 2027 Edition. Pages 1194–1195 of 1,343. View official source ↗