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FHWA Resource Center

STRUCTURES TEAM

New York State Department of Transportation

ENGINEERING INSTRUCTION
EI 03-000

Title: NEW §562 - REINFORCED CONCRETE THREE-SIDED STRUCTURES

Distribution:

x Manufacturers (18)

x Main Office (30)

x Local Govt. (31)

x Regions/Agencies (32)
o Surveyors (33)

x Consultants (34)

x Contractors (39)

o ____________( )
Approved:

George A. Christian

Acting Deputy Chief Engineer (Structures)
Date

ADMINISTRATIVE INFORMATION:

- This EI is effective with projects submitted for the letting of May 6, 2004.

- No EIs or EBs are superseded by this issuance.

- The Standard Specification issued with this EI will be incorporated into the next issuance of the Standard Specifications.

PURPOSE:

This EI issues the new Standard Specifications for §562 Reinforced Concrete Three-Sided Structures.

IMPLEMENTATION:

- The following Special Specifications are disapproved as of May 6, 2004: 562.95nnxx16, 562.96nnbb16, 562.97nnbb16.

- Main Office DQAB will insert the Standard Specification Shelf Note into Contract Proposals effective with the letting date of May 6, 2004.

- New specifications are: §562 - Reinforced Concrete Three-Sided Structures.

TRANSMITTED MATERIALS:

- A shelf note containing §562 - Reinforced Concrete Three-Sided Structures.

BACKGROUND: Reinforced Concrete Three-Sided Structures have been used successfully by NYSDOT since the early 1990s. The new section revises and replaces special specifications that have been used regularly for many years. These economical structures now account for most of the short span bridges and large culverts built by NYSDOT. The specification has been updated to reflect current practice and is changing from a special specification to a standard specification.

CONTACT:

Direct questions regarding this EI to Mathew Royce of the Structures Design and Construction Division at 518-457-4534 or via e-mail at mroyce@dot.state.ny.us.

SECTION 562 REINFORCED CONCRETE THREE-SIDED STRUCTURES

562-1 DESCRIPTION. The work consists of designing and constructing reinforced concrete three-sided structure(s) at the location(s) indicated on the Plans.

A reinforced concrete three-sided structure is composed of some of the following discrete elements:

- Span Unit

- Span Unit Footing

- Wing Wall with Footing

- Headwall

- Invert Slab with Cut-off Wall

- Apron with Cut-off Wall

NOTE: Any of the above elements may be cast-in-place at no additional cost to the State.

562-2 MATERIALS. Materials for all precast concrete components shall meet the requirements of the PCCM. Materials for C.I.P. concrete shall be Class A concrete meeting the requirements of §555 and reinforcement meeting the requirements of §556.

562-3 CONSTRUCTION

562-3.01 Design. An appropriate structure design and all details necessary for construction meeting the Design parameters given in these specifications shall be developed and submitted to the DCES for approval. All design work and detail development shall be done by a Professional Engineer. The design submittal shall conform to the requirements stated in the PCCM. The DCES reserves the right to reject a proposed design(s) if the structure type is determined to be unsuitable for the proposed application based on safety, durability, serviceability or maintainability.

The Load Rating shall be determined in accordance with the AASHTO "Manual for Condition Evaluation of Bridges, 1994 - Second Edition," with all interim provisions in effect. The contractor shall specify which method (working stress or load factor) was used in load rating computations. As soon as the information is known, the contractor shall supply all load rating computations to the DCES.

562-3.02 Design Parameters. The design of the structure(s) described above shall meet the following:

- Design Specification : New York State Standard Specifications for Highway Bridges with all provisions in effect at the time of letting.

- Live Load : MS 23

- Highway Profile Section : As shown on the contract plans.

- Soil Parameters : As shown on the contract plans.

1 . Layout, Span, Rise, and : As shown on the contract plans.

Length of the Bridge

Structure

- Staged Construction : Construction staging shall be as shown on the contract plans.

- Wing Walls : As shown on the contract plans.

- Railing or Barrier : The railing anchorages or barrier anchorages on the structure shall be designed to develop adequate global and local capacities required to resist the loads in the Standard Specifications for Highway Bridges.

- Hydraulics : The proposed structure shall provide hydraulic area (effective flow area) below the design high water elevation shown on the contract plans.

- Allowable concrete stress : As per the provisions of the Standard Specifications except that maximum tensile stress in concrete during handling and erection shall not exceed 0.25

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