2014 English Special Provisions to Item 421 - HYDRAULIC CEMENT CONCRETE (All)

SP421-004  PDF  RTF   - For project 0808-01-058 in Falls County. The following articles have been revised, ''Aggregates'', ''Mix Design Proportioning'', ''Slump'', ''Optimized Aggregate Gradation Concrete'', ''Final Trial Batches'', ''Delivering Concrete'', ''Testing of Fresh Concrete'', ''Job-Control Testing'' One-Time Use.
SP421-003  PDF  RTF   - For project 0912-70-103 in Harris County. Revises required materials & components. One-Time Use.
SP421-002  PDF  RTF   - Revises mix design options & exceptions for class SS & K, adds method to determine if aggregate combination sand equivalency requirements are met, revises references to Table 4 & 6, & removes all contractor job-control testing requirements. Required on all projects using hydraulic cement concrete beginning with the June 2016 letting. Statewide Use.
SP421-001  PDF  RTF   - For project 0920-30-077 in Orange County. Adds provisions for lightweight concrete. One-Time Use.

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