1993 English Special Provisions to Item 423 - RETAINING WALL (All)
| SP423-004 | RTF | - For project 0048-09-023 in Hill County. Provides for changes to the gradation requirements for Type A. One-Time Use. | |
| SP423-003 | RTF | - For project 0271-17-127 in Harris County. Provides for changes to payment article. One-Time Use. | |
| SP423-002 | RTF | - For project 0521-04-215 in Bexar County. One-Time Use. | |
| SP423-001 | RTF | - Changes Type A gradation as an attempt to solve problems with the construction of MSE walls using unstabilized sand as backfill material. Districtwide Use. Houston District. | |
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