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EBs are superseded by this issuance.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
TRAINING
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