txdot item 247 spec
2014 SPECIFICATIONS UPDATE
Email [email protected] 19 Item 100 Series – 2014 Specification Book Rewrite . 2014 SPECIFICATION CHANGES Items 204 - 292 . Subcommittee Members ... Item 247 – Flexible Base, Table 1 Property Test Method Grade 1-2 Grade 3 Grade 42 Grade 5 Master gradation sieve size (cumulative % retained)
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Random Density Testing of Soils and Base Materials
The Federal Highway Administration (FHWA) conducted a stewardship review of TxDOT specifications and procedures in 2021. One finding from this review wa s soils and base specifications do not require ... Embankment, Item 247 Flexible Base, and Items 247, 260, 275, 276, 290, and 291for asphalt, cement, and lime treated materials. In addition to ...
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2024 Standard Specifications
2024 Specifications 247. 1 . Item 247 Flexible Base . 1. DESCRIPTION . Construct a foundation course composed of flexible base. 2. MATERIALS . Furnish uncontaminated materials of uniform quality that meet the requirements of the plans and specifications. Notify the Engineer of the proposed material sources and of changes to material sources.
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2024 Standard Specification Training Seminar
– Added to all embankment (soils) and base specification items. – Provide the Engineer with the beginning and ending station numbers of the area completed. – Engineer will determine the width, and the random testing locations in accordance with ... Item 247 – Flexible Base. 2024 Standard Specification Changes 200 Series Items 72 ...
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Item 247 Flexible Base
Crushed concrete must meet the requirements of Section 247.2.1.2.6., "Recycled Material," and be managed in a way to provide for uniform quality. The Engineer may require …
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Item 610 Roadway Illumination Assemblies
pertinent requirements of the following Items: Item 416, "Drilled Shaft Foundations" Item 421, "Hydraulic Cement Concrete" Item 441, "Steel Structures" Item 442, "Metal for Structures" Item 445, "Galvanizing" Item 449, "Anchor Bolts" Item 616, "Performance Testing of Lighting Systems"
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Item 341 Dense-Graded Hot-Mix Asphalt
under this specification unless the HMA is deemed exempt in accordance with Section 341.4.9.4., "Exempt Production." 2. MATERIALS Furnish uncontaminated materials of uniform quality that meet the requirements of the plans and specifications. Notify the Engineer of all material sources and before changing any material source or formulation. …
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SPECIAL PROVISION 247---012 Flexible Base
1-2 247---012 01-06 2004 Specifications Yoakum & Corpus Christi District SPECIAL PROVISION 247---012 Flexible Base For this project, Item 247, "Flexible Base," of the Standard Specifications, is hereby amended with respect to the clauses cited below, and no other clauses or requirements of this Item are waived or changed hereby. Article 247.4.
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ITEM 247 FLEXIBLE BASE
This Item shall govern for the delivery, stockpiling and/or the construction of foundation or base courses as herein specified and in conformity with the typical sections and to the …
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TxDOT Specifications
RTF. - This Special Provision incorporates 2024 Standard Specification language from Item 247. Required for all projects using Flexible Base beginning with the February 2024 …
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Flex Base (TxDOT Item 247)
Flex Base (TxDOT Item 247) Arcosa Crushed Concrete produces a clean, quality base that can be used on TxDOT projects. Flex Base is commonly used in a wide variety of applications, such as:
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Flexible Base Selection and Information Guide
TxDOT 2014 Standard Specification for Construction and Maintenance of Highways, Streets and Bridges (Specification Book) Item 247, " Flexible Base," TxDOT test methods, Series 100 -E and 400 A, TxDOT Guide Schedule of Sampling and Testing, TxDOT training class CON411, "Inspection of Flexible Base & Embankment," and
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TxDOT Specifications
REFERENCE ITEMS (210) Go to Top. 247 - FLEXIBLE BASE. SPECIFICATION REQUIREMENTS 1) Specify aggregate type and grade on the plans. 2) Do not use additives such as but not limited to lime, cement, or fly ash to modify aggregates to meet the requirements of Table 1, unless shown on the plans. 3) Material Type E will …
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Item 132 Embankment
Property Test Method Specification Limit . Liquid limit Tex-104-E ≤ 45 Plasticity index (PI) Tex-106-E ≤ 15 Bar linear shrinkage Tex-107-E ≥ 2 Perform the Linear Shrinkage test only as indicated in ... Meet the requirements of Item 7, "Legal Relations and Responsibilities," when off right of way sources are used. Notify the Engineer ...
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Bid Items and Index
The Official/unofficial bid item index dashboard displays the bid item list and quantities for projects scheduled for TxDOT statewide letting or TxDOT local district lettings. This dashboard updates hourly. Official Bid Items projects are within 21 days of letting. Unofficial Bid Items projects are between 42 days and 22 days before letting.-->
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TxDOT Specifications
- This Special Provision incorporates 2024 Standard Specification language from Item 247. Required for all projects using Flexible Base beginning with the February 2024 letting. Use of this SP prior to the February 2024 letting is at the District's option. It will also replace the current statewide SP 247-003. Replaces SP247-003 . Statewide Use.
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Item 265 Fly Ash or Lime-Fly Ash Treatment (Road …
Item 247, "Flexible Base," for the type and grade shown on the plans, before the addition of lime or FA. 2.5. Water. Furnish water free of industrial wastes and other objectionable matter. 2.6. Asphalt. When permitted for curing purposes, furnish asphalt or emulsion in accordance with Item 300,
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ITEM 432 RIPRAP
ITEM 432 RIPRAP 432.1. Description. ... Filter fabric shall meet the requirements of Departmental Material Specification D-9-6200, Type 2. (a) Stone (Type R). ... The aggregate for this riprap shall be material conforming to Item 247, "Flexible Base", except for measurement and payment, of the type and grade shown on the plans. Unless
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TxDOT Specifications
TxDOT Specifications - English and Metric Specification Books, Special Provisions, Special Specifications, Change Memorandums, Material Specifications, ... Item 247, ''Flexible Base'' of the Standard Specifications is amended with respect to Section 5.2., ''Cubic Yard in Stockpile,'' and Section 5.3., ''Cubic Yard in Final Position.'' ...
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Section 4: FPS21 Modulus Inputs and Backcalculation …
Statewide special specs. ... Item 247. If historic data not available, modulus shall be no greater than 3-4 times the subgrade modulus or use FPS default, whichever is lower. ... TxDOT currently uses version 7.0 of the MODULUS software for backcalculation of deflection data collected by the FWD. Version 7.0 is comparable to version 6.0; the ...
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Item 302 Aggregates for Surface Treatments
Precoat the aggregates with asphalt material that meets the requirements of Item 300, "Asphalts, Oils, and Emulsions." Use any asphalt material that meets the requirements of Item 300, "Asphalts, Oils, and Emulsions," unless a specific precoat material is specified on the plans. 2.2.2. Additives. Use the type and rate of additive ...
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TxDOT Specifications
TxDOT Specifications - English and Metric Specification Books, Special Provisions, Special Specifications, Change Memorandums, ... Required on all projects using Item 247 beginning with the July 2009 letting. Replaces SP247-020 . (Change Memo: de-15-09). Statewide Use. ATLANTA - DISTRICT 19: SP247-044
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2024 Standard Specifications
2024 Standard Specifications - 200 Series. 200 Items. Subgrade Treatments and Base. Item 204. Sprinkling. 1. DESCRIPTION. Apply water for dust control, earthwork, or base …
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Special Specification Template
accordance with Item 247, "Flexible Base." Remove all loose or unsuitable materials. Carefully backfill all depressions to grade with additional base material, and compact the backfill to a density at least equal to the adjacent base. Remove any buried debris protruding from the base, and carefully backfill and compact voids as specified above.
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FLEX BASE PROPERTIES
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Welcome to the Texas Department of Transportation FTP …
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2024 Standard Specifications
TxDOT Specifications; 2024 Standard Specifications. TxDOT has established standards and specifications for the construction and maintenance of highways, streets, and bridges. ... Required Specification checklists; Item 8 Delayed Start Provisions Request (Standard Operating Procedure) Memo - Nov. 20, 2023;
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Item 276 Cement Treatment (Plant-Mixed)
Engineer will verify that the specification requirements are met before the sources can be used. The Engineer may sample and test project materials at any time before compaction. Use Tex-100-E for material ... Furnish base material that meets the requirements of Item 247, "Flexible Base," for the type and grade shown on the plans, before ...
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Item 351 Flexible Pavement Structure Repair
Use existing base and add new flexible base as required in accordance with Item 247, "Flexible Base," and details shown on the plans to achieve required section. 4.3.2. Lime-Stabilized Base. Use existing base, add new flexible base, …
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Item 247 Flexible Base
Item 247 Flexible Base. 1. DESCRIPTION. Construct a foundation course composed of flexible base. 2. MATERIALS. Furnish uncontaminated materials of uniform quality that …
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