4110.01DESCRIPTION
Natural sands resulting from disintegration of rock through erosional processes unless specified otherwise on the source approval. Acquire mineral aggregate from an approved source as described in Materials I.M. 409.
4110.02GRADATION
Meet the requirements for Gradation No. 1 of the Aggregate Gradation Table, Article
4109.02
4110.03QUALITY
Meet the requirements of Table 4110.03-1: Table 4110.03-1: Test Limits and Methods Fine Aggregate Test Limits Test Method Quality Shale and Coal 2.0% (maximum) Materials I.M. 344
Source: Iowa Standard Specifications for Highway and Bridge Construction, 2023 Edition. Pages 1077–1077 of 1,288.