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FP-96 English Version - Eastern Federal Lands Highway Division

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Section 705.- ROCK705.01 Gabion and Revet Mattress Rock. Furnish hard, durable rock thatis resistant to weathering and reasonably free of organic and spoil material.Conform to the following:(a) Coarse durability index, AASHTO T 210(b) Unit mass of a filled basket(c) Gradation:52 min.100 lb/ft 3 min.(1) Baskets 1 feet or greater in the vertical dimension.(a) Maximum dimension8 inches(b) Minimum dimension4 inches(2) Baskets less than 1 feet in the vertical dimension.(a) Maximum dimension6 inches(b) Minimum dimension3 inches705.02 Riprap Rock. Furnish hard, durable, angular rock that is resistant toweathering and water action and free of organic and spoil material. Do notuse boulders, shale, or rock with shale seams. Conform to thefollowing:(a) Apparent specific gravity, AASHTO T 85 2.50 min.(b) Absorption, AASHTO T 854.2% max.(c) Coarse durability index, AASHTO T 210 52 min.(d) Gradation for the class specified Table 705-1689

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