4119Bedding and Backfill Material for Interstate and Primary Road

IA · 2023 Standard Specifications✓ Full text on BuildSpecBook pages 1085–1086 Save this section

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4119.01DESCRIPTION

Aggregate of the following types: • Crushed Stone, • Gravels for which 75% or more of the particles retained on the 3/8 inch sieve have at least one fractured face as defined in Materials I.M. 305 (the fractured face requirement shall only apply to bedding material placed under Primary or Interstate roadways), or • Crushed PCC, if approved by the Engineer.

4119.02CLASS A CRUSHED STONE

Meet the requirements of Article 4120.04.

4119.03CLASS C CRUSHED GRAVEL

Meet the requirements of Article 4120.03.

Granular Surfacing and Granular Shoulder Aggregate

4120.03

4119.04CRUSHED PCC

Meet the requirements of Materials I.M. 210 and for Gradation No. 11 of the Aggregate Gradation Table, Article 4109.02.

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Source: Iowa Standard Specifications for Highway and Bridge Construction, 2023 Edition. Pages 1085–1086 of 1,288. View official source ↗

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4118 Bedding Material for Non-Primary Road Projects

4120 Granular Surfacing and Granular Shoulder Aggregate

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