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STRUCTURAL
ENGINEERS ASSOCIATION OF CENTRAL CALIFORNIA
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STRUCTURAL
ENGINEERS ASSOCIATION OF CENTRAL CALIFORNIA
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Thursday April 28, 2011 "Structural Concrete Design: ACI 318-08, ACI 318-11, and Beyond" Jack Moehle, Ph.D., P.E., Professor of Structural Engineering, University of California, Berkeley This
presentation introduces the ACI 318 Building Code, the code development
process, and significant recent changes. For non-seismic design, new code
provisions affect fiber-reinforced concrete, headed reinforcement,
structural integrity reinforcement, prestressed sections, minimum shear
reinforcement, deep beams, and how lightweight concrete is considered
throughout the Code. For
seismic design, new code provisions affect A706 reinforcement, lateral
stiffness for analysis, confinement reinforcement in frames and walls,
headed shear stud reinforcement in slabs, splices in walls, wall piers,
diagonally reinforced coupling beams, diaphragms, and intermediate moment
frames. The presentation will
include discussion of plans for the 2011 and 2014 Codes, including Code
reorganization, design requirements for special moment frames, and
structural walls, reflecting observations from laboratory tests and recent
earthquakes. Diaphragm design
considerations based on the latest NIST Technical Brief also will be
reviewed. Anchorage Provisions in the 2010 CBC & Beyond John Silva, S.E., Director of Codes and Standards, Hilti North America The 2010 CBC adopts ACI 318-08, but also includes additional
changes to the seismic anchorage provisions. This presentation will cover the
provisions in ACI 318-08 Appendix D that differ from earlier versions as
well as the specific exceptions taken in the CBC, including: Reduced conservatism in the
calculation of shear resistance for near edge anchors; increased
conservatism in the ductile anchor requirements; incorporation of the
overstrength requirement for non-ductile anchors; removal of size
restrictions on anchors; exceptions for out of plane wall anchorage;
exception for nonstructural equipment anchorage; and revisions to the
nonstructural anchorage provisions in line with ASCE/SEI 7-10. The presentation will also
include a brief preview of coming changes in ACI 318-11, which will
contain significant changes to Appendix D: Design provisions for adhesive
anchors and significant changes to the seismic provisions. This presentation assumes a
working knowledge of anchor design and strength design provisions in ACI
318 Appendix D. Precast Concrete Structures: Design and Detailing Considerations Glen Underwood, Chief Structural Engineer, Clark Pacific In this presentation, we will discuss design, detailing, and
construction issues in precast concrete structures, with a focus on
constructability and emulation of cast-in-place construction. Code provisions of ACI 318-08
unique to precast design will be highlighted, as will precast industry
practices. Topics covered
include considerations for breaking up and panelizing the structures,
emulative detailing of connections, constructible connection details,
structural integrity detailing, and seismic compatibility
requirements.
PRESSS - "Hybrid Moment Frame" Sashi Kunnath, Ph.D., P.E., University of California, Davis Ryan Reinhard, S.E., Buehler & Buehler Structural Engineers, Inc. This presentation introduces the PRESSS (Precast Concrete
Seismic Structural Systems) and will focus on a specific type of PRESSS,
the Unbonded Post-Tensioned Frame with Damping (Hybrid Moment Frame). Sashi Kunnath will discuss the
expected seismic performance of precast concrete moment frames with
special hybrid connections that was evaluated through numerical
simulations of several two-dimensional frames subjected to a suite of
ground motions. The objective
of the study was to provide guidance on probable seismic demands of
typical precast frames containing such connections in regions of high
seismicity. Ryan Reinhard
will discuss the design considerations and code documents.
Location: Clark Pacific Contact Person: Lori Campbell (email) Publication
Information Circulation: Approximately 500 Print Medium: Black & White and Electronic Distribution: Members of the Structural Engineers Association of Central California (Structural Engineers, Civil Engineers, Industry Affiliates, Graduate Students, Active Students,Retired Engineers, Corresponding and Honorary Members) Scheduled Deadlines
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Forum Payment SEAOCC Membership. IT IS THE MISSION OF THE STRUCTURAL ENGINEERS ASSOCIATION OF CALIFORNIA (SEAOC) TO ADVANCE THE STRUCTURAL ENGINEERING PROFESSION, PROTECT PUBLIC SAFETY, AND SERVE THE BUSINESS AND PROFESSIONAL NEEDS OF THE MEMBERSHIP. |
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STRUCTURAL ENGINEERS ASSOCIATION OF
CENTRAL CALIFORNIA
P. O. Box
2590 Fair Oaks, California 95628-9590
E-Mail::
seaocc@sbcglobal.net Telephone: 916.965.1536 FAX: 916-965-6234
