Section 4163.� Treated Timber and Lumber

4163.01���� GENERAL REQUIREMENTS.

A.��� For rough or surfaced, treated timber and lumber, furnish new and unused material meeting the requirements of Section 4162 for the size and lengths specified in the contract documents.

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B.��� In timber structures, use the class of timber or lumber meeting the requirements of Section 4162 for use according to position in the structure.

C.��� Arrange inspection according to Materials I.M. 462. Include the cost of inspection in the unit price bid for the material specified.

4163.02���� SPECIES OF WOOD.

A.��� Unless specified otherwise, treat only Douglas Fir (coast region), Northern Pine, and Southern Pine.

B.��� Incise Douglas Fir before treatment according to Article 4161.03, B, 1.

C.��� On timber structures, accurately bore all holes required in stringers, rail posts, post blocks, and scupper blocks before treatment wherever practical.

4163.03���� PRESERVATIVE TREATMENT.

Unless specified otherwise, full pressure preservative treatment, according to Section 4161, is required for all timber and lumber.