TxDOT Specifications

1993 Standard Specifications Book

Last Updated (04/18/2002)

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DIVISION IV - STRUCTURES (Items 427 through 445)

Table Of Contents

427 SURFACE FINISHES FOR CONCRETE
428 CONCRETE SURFACE TREATMENT
429 CONCRETE STRUCTURE REPAIR
430 EXTENDING CONCRETE STRUCTURES
431 PNEUMATICALLY PLACED CONCRETE
432 RIPRAP
433 JOINT SEALANTS AND FILLERS
434 SLIDING ELASTOMERIC BEARINGS
435 ELASTOMERIC MATERIALS
437 CONCRETE ADMIXTURES
438 CLEANING AND/OR SEALING JOINTS AND CRACKS (PORTLAND CEMENT CONCRETE)
439 CONCRETE OVERLAY OF STRUCTURE DECKS
440 REINFORCING STEEL
441 STEEL STRUCTURES
442 METAL FOR STRUCTURES
443 PERMANENT METAL DECK FORMS
444 BRIDGE PROTECTIVE ASSEMBLY
445 GALVANIZING

ITEM NO. - TITLE AND REQUIREMENTS

427 - SURFACE FINISHES FOR CONCRETE

SPECIFICATION REQUIREMENTS
1) Grade and/or class of finish will be specified on the plans, for finish other than ordinary surface finish.
2) This is a plans quantity measurement Item.

OPTIONAL REQUIREMENTS
1) When Class E finish is permitted, it will be in accordance with Item 446.
2) When Class C finish is permitted, it will be in accordance with Item 526.
3) When epoxy waterproofing is required, it will be in accordance with Item 5699.

PAYMENT DESCRIPTION UNITS
1) "Class A Finish for Existing Concrete" SY
2) "Class B Finish for Existing Concrete" SY
3) "Class A or B Finish for Existing Concrete" SY
4) "Class D Finish for Existing Concrete" SY
5) "Class E Finish for Existing Concrete" SY
6) "Epoxy Waterproofing" SY

REFERENCE ITEMS
(420)

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428 - CONCRETE SURFACE TREATMENT

SPECIFICATION REQUIREMENTS
1) Any surface receiving a surface finish under Item 427 will not get a surface treatment under Item 428.
2) This is a plans quantity measurement Item.

OPTIONAL REQUIREMENTS
None 

PAYMENT DESCRIPTION UNITS
1) "Concrete Surface Treatment" SY

REFERENCE ITEMS
None

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429 - CONCRETE STRUCTURE REPAIR

SPECIFICATION REQUIREMENTS
1) Size and location of drive pins, studs, or expansion bolts and method of attaching new reinforcing steel will be detailed on the plans.

OPTIONAL REQUIREMENTS
None

PAYMENT DESCRIPTION UNITS
1) "Concrete Structure Repair" SY

REFERENCE ITEMS
(420, 421, 431, 440, 524, 5699)

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430 - EXTENDING CONCRETE STRUCTURES

SPECIFICATION REQUIREMENTS
1) Details will be shown on the plans.
2) Portions of the old structures to be removed will be to the lines and dimensions shown on the plans.
3) This is a plans quantity measurement Item.

OPTIONAL REQUIREMENTS
1) When welding is shown on the plans it will be in accordance with Item 448.

PAYMENT DESCRIPTION UNITS
1) "Class ___ Concrete for Extending Structures (Type Specified)" CY , EA , SF , SY, LF

REFERENCE ITEMS
(420, 421, 427, 433, 440, 520, 522, 524, 526)

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431 - PNEUMATICALLY PLACED CONCRETE

SPECIFICATION REQUIREMENTS
1) Type of concrete to be shown on the plans.

OPTIONAL REQUIREMENTS
None 

PAYMENT DESCRIPTION UNITS
1) "Pneumatically Placed Concrete (Encasement)" SF
2) "Pneumatically Placed Concrete (Repair)" CF

REFERENCE ITEMS
(421, 433, 437, 440, 522)

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432 - RIPRAP

SPECIFICATION REQUIREMENTS
1) Show type, details and thickness of riprap on the plans.
2) If concrete riprap is other than Class B, it needs to be shown on the plans.
3) Concrete riprap will be reinforced using wire or bar reinforcement unless otherwise shown on the plans.
4) Show type and grade of aggregate conforming to Item 247 for cement stabilized riprap on the plans.
5) If filter fabric is required, it needs to be shown on the plans.
6) Special riprap will be as shown on the plans.

OPTIONAL REQUIREMENTS
1) When concrete is required, it will be in accordance with Items 420,421,440,520,522,524, and 526.
2) When cement stabilized riprap is required, it will be in accordance with Item 247.
3) When Class II riprap is required, it will be in accordance with Item 431. 

PAYMENT DESCRIPTION UNITS
1) "Riprap (Type or Classification Specified)" CY

REFERENCE ITEMS
None

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433 - JOINT SEALANTS AND FILLERS

SPECIFICATION REQUIREMENTS
1) Class of joint sealants to be shown on the plans.

OPTIONAL REQUIREMENTS
None

PAYMENT AND MEASUREMENT
Subsidiary to the various bid items in the contract.

REFERENCE ITEMS
(492)

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434 - SLIDING ELASTOMERIC BEARINGS

SPECIFICATION REQUIREMENTS
1) Details shown on the plans.
2) Pad thickness shown on the plans.

OPTIONAL REQUIREMENTS
None

PAYMENT DESCRIPTION UNITS
1) "Sliding Elastomeric Bearing (Type Specified)" EA

REFERENCE ITEMS
None

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435 - ELASTOMERIC MATERIALS

SPECIFICATION REQUIREMENTS
1) Elastomeric bearings will be specified on the plans by hardness, size and configuration.
2) Specify if elastomeric bearings may be either "Plain" or "Laminated" on the plans.
3) Details for waterstops will be shown on the plans.
4) Nylon reinforced neoprene sheet thickness will be shown on the plans.

OPTIONAL REQUIREMENTS
None 

PAYMENT DESCRIPTION UNITS
1) "Elastomeric Bearing (Type Specified)" EA

REFERENCE ITEMS
None

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437 - CONCRETE ADMIXTURES

SPECIFICATION REQUIREMENTS
1) Air content to be in accordance with Item 421 unless otherwise shown.

OPTIONAL REQUIREMENTS
None

PAYMENT AND MEASUREMENT
Subsidiary to the various bid items in the contract.

REFERENCE ITEMS
(421)

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438 - CLEANING AND/OR SEALING JOINTS AND CRACKS (PORTLAND CEMENT  CONCRETE)

SPECIFICATION REQUIREMENTS
1) Type and/or class of material to be used for sealing joints and cracks will be as shown on the plans.
2) The cutting dimensions for the grooves for the preparation of cracks will be shown on the plans.

OPTIONAL REQUIREMENTS
None

PAYMENT DESCRIPTION UNITS
1) "Cleaning of Existing Joints" LF
2) "Cleaning and Sealing of Existing Joints" LF
3) "Cleaning and Sealing Cracks" LF

REFERENCE ITEMS
(433, 446)

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439 - CONCRETE OVERLAY OF STRUCTURE DECKS

SPECIFICATION REQUIREMENTS
1) Unless otherwise shown, Type I cement is used with concrete overlays and Type II cement is used with dense concrete overlays.
2) This is a plans quantity measurement Item.

OPTIONAL REQUIREMENTS
None

PAYMENT DESCRIPTION UNITS
1) "Slab Repair (Type 1)(Depth Specified)" SY
2) "Slab Repair (Type 2)(Depth Specified)" SY
3) "Concrete Overlay (Depth Specified)" SY
4) "Dense Concrete Overlay (Depth Specified)" SY

REFERENCE ITEMS
(420, 421, 428, 440, 483, 485)

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440 - REINFORCING STEEL

SPECIFICATION REQUIREMENTS
1) Shapes of bends shown on the plans.
2) Epoxy coating when required to be shown on the plans.

OPTIONAL REQUIREMENTS
None

PAYMENT AND MEASUREMENT
Subsidiary to the various bid items in the contract.

REFERENCE ITEMS
(446, 448)

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441 - STEEL STRUCTURES

SPECIFICATION REQUIREMENTS
1) This Item will govern for the fabrication and erection of structural steel and other materials.

OPTIONAL REQUIREMENTS
None

PAYMENT AND MEASUREMENT
Subsidiary to the various bid items in the contract.

REFERENCE ITEMS
(420, 421, 434, 442, 446, 447, 448)

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442 - METAL FOR STRUCTURES

SPECIFICATION REQUIREMENTS
1) Specify type of steel strength designation on the plans.
2) If structural steel-HS or structural steel-XHS is specified, then the grade of material will be shown on the plans.
3) Specify the class of material for the steel forgings on the plans.
4) The thickness of the steel deep beam rail will be shown on the plans.
5) This is a plans quantity measurement Item.

OPTIONAL REQUIREMENTS
1) When Galvanizing is required, it will be in accordance with Item 445.
2) When painting is required, it will be in accordance with Item 446.
3) When high strength bolts are required, they will be in accordance with Item 447.
4) When welding is required, it will be in accordance with Item 448.
5) When anchor bolts are required, they will be in accordance with Item 449. 

PAYMENT DESCRIPTION UNITS
1) "Structural Steel-HYC" LB
2) "Structural Steel-HS" LB
3) "Structural Steel (Type Specified or Other Metal Classification Specified)" LB

REFERENCE ITEMS
(441)

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443 - PERMANENT METAL DECK FORMS

SPECIFICATION REQUIREMENTS
1) Details shown on the plans.

OPTIONAL REQUIREMENTS
None

PAYMENT AND MEASUREMENT
Subsidiary to the various bid items in the contract.

REFERENCE ITEMS
(441, 445, 448)

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444 - BRIDGE PROTECTIVE ASSEMBLY

SPECIFICATION REQUIREMENTS
1) Installed at locations shown on the plans.
2) Details shown on the plans.
3) Protective angle length must be shown on bridge layout when bid as "Bridge Protective Assembly", "Protective Angle" or "Protective Angle with Sign Bracket".
4) Need to indicate distance to nearest bent along beam when angle is required.

OPTIONAL REQUIREMENTS
None 

PAYMENT DESCRIPTION UNITS
1) "Bridge Protective Assembly" EA
2) "Protective Angle" EA
3) "Protective Angle with Sign Bracket EA
4) "Sign Bracket" EA
5) "Sign and Bracket" EA

REFERENCE ITEMS
(442, 445)

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445 - GALVANIZING

SPECIFICATION REQUIREMENTS
1) Items to be galvanized to be shown on the plans.

OPTIONAL REQUIREMENTS
None

PAYMENT AND MEASUREMENT 
Subsidiary to the various bid items in the contract.

REFERENCE ITEMS
None

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