Montana Department of Transportation (MDT) · 2020 Standard Specifications for Road & Bridge Construction
Section 706 — Treated and Untreated Timber
Montana 2020 Standard Specifications for Road & Bridge Construction, Section 706. Full text, cross-references and related pay items on BuildSpec.
SECTION 706 TREATED AND UNTREATED TIMBER 706.01 STRUCTURAL TIMBER AND LUMBER Furnish timbers and lumber being: A. Standard sawn Douglas fir, larch, or southern yellow pine. Coastal and intermountain varieties of Douglas fir are allowed. See additional treatment requirements for intermountain Douglas fir in Subsection 706.04.2. B. Graded under the current West Coast Lumber Standard Grading Rules or the Western Lumber Grading Rules. C. Grade stamped by an American Lumber Standards certified inspection agency. The recommended design values under the rules for grading timbers and lumber grades…
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