12 2015 PCI Design Handbook

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PCI Design Handbook
Richard Miller, PhD, PE, FPCI
Professor of Civil Engineering
University of Cincinnati
Chair, PCI Research and
Development Council
1
What is the Design Handbook?
It’s PCI’s “how to”
manual for
prestressed concrete
design.
Now on 7th Edition!
(8th due in 2016 – updated to
ACI-318-14)
2
Design Handbook Chapters
•
•
•
•
•
Chapter 1 – Applications
Chapter 2 - Notation
Chapter 3 – Preliminary Design
Chapter 4 – Analysis and Design
Chapter 5 – Design of Precast/Prestressed
Components
• Chapter 6 – Design of Connections
• Chapter 7 – Structural Considerations for
Architectural Precast
• Chapter 8 – Handling and Erection Bracing
3
Design Handbook Chapters
•
•
•
•
•
•
•
•
Chapter 9 – Materials
Chapter 10 – Design for Fire Resistance
Chapter 11 – Thermal and Acoustical Properties.
Chapter 12 – Vibration Design of
Precast/Prestressed Concrete Floor Systems
Chapter 13 – Tolerances
Chapter 14 – Specifications and Standard Practices
Chapter 15 – General Design Information
Appendix – ACI 318-08
4
PCI Design Handbook
• Many instructors use the Design Handbook as
the text for class.
• Contains information not found in standard texts.
• Available at huge discount from PCI.
– Used to be free, but the economy ….
– Professors can get a hard copy as part of
“Prestressed in a Box”
– Students get CD copies for $25 if they are PCI
Members (membership is FREE).
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PCI Design Handbook
So the Design
Handbook is just for
precast/prestressed
class, right????
6
PCI Design Handbook
The Handbook IS useful in Prestressed
Class because:
• It has information on precast materials
• It covers design of both components
and systems
• It has worked design examples
• It has needed tables/graphs
• It has product information
7
PCI Design Handbook
The Handbook IS useful in Prestressed
Class because:
• It has information on advanced subjects
– Torsion
– Connections
– Anchor bolts
• Provides PCI Standard Practices
– Deviations from ACI 318 that have been
proved to work.
8
PCI Design Handbook
The Handbook is also useful in:
• Reinforced Concrete Design (a lot of
precast is reinforced but not
prestressed)
• Construction Materials
• Foundation Design
• Structural Analysis/Structural Systems
9
PCI Design Handbook
• Chapter 1 – Precast and Prestressed
Concrete: Applications
• Shows applications of precast
– An image library is available from PCI with
more images
10
PCI Design Handbook
• Chapter 2 is Notation
• Chapter 3 –
Preliminary Design
– Briefly discusses loads
– Has preliminary design
tables
– Discusses preliminary
design.
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PCI Design Handbook
• Chapter 4 – Analysis and Design of
Precast/Prestressed Concrete Structures
– Discusses basic loads and ASCE 7 Load
Combinations
• Useful for any structural course
• Discusses loads not commonly covered in
classes (snow, wind, earthquake)
– Structural integrity
– Volume Changes
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PCI Design Handbook
• Chapter 4 – Analysis and Design of
Precast/Prestressed Concrete Structures also has:
– Lateral Load resisting systems
• Moment Frames
• Shear Walls
• Diaphragms
– Blast Resistance
Note – The SE exam is now two days long. The second day is entirely lateral
load resisting systems! The information in Chapter 4 is very helpful for the
second day of the exam!
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PCI Design Handbook
At UC, we have now have a required
class on Structural Loads and Systems
that covers lateral load design.
We use Chapter 4 information about
loads, lateral load resisting systems and
diaphragms.
(We hope to add a lateral load module to Prestressed in
a Box. Waiting for budget approval.)
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Here is a sample page.
It has Snow Load Charts.
This is very useful for a class
on loads.
15
Here is a typical page
discussing structural
integrity. The
requirements are shown.
How the building is
designed to meet these
requirements is also
shown.
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PCI Design Handbook
• Chapter 5 – Design of Precast and
Prestressed Concrete Components
– VERY IMPORTANT: Both reinforced and
prestressed members are covered!
– Design Handbook could be used for regular
reinforced concrete design courses!
– Contains WORKED design examples!
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PCI Design Handbook
Worked example
for a hollow core
slab.
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PCI DESIGN HANDBOOK
The 7th Edition is based on ACI-318-05.
Appendix A discusses changes in ACI-318-08.
ACI-318-14 was mostly a reorganization. Thus,
the basic code equations and designs are mostly
still valid.
To use the material, it will usually just be
necessary to provide new section in ACI-318-14.
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PCI Design Handbook
Chapter 5 contents:
• Basic theory (stress block, phi factors, etc.)
• Flow chart for flexural design (pretensioned,
post-tensioned, partially prestressed and nonprestressed)
• Strain Compatibility
• Flexural design examples
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PCI Design Handbook
Chapter 5 contents:
•
•
•
•
Service load design (with examples)
Composite members
Release stresses (with examples)
Cracked and transformed sections (with
examples)
• Bond/Development Length
– Evaluation of members with
underdeveloped strand.
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PCI Design Handbook
Chapter 5 contents:
•
•
•
•
•
•
Loss of Prestressing Force
Shear Design (with examples)
Horizontal Shear (with examples)
Torsion (with examples)
L Spandrels
Bearing
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PCI Design Handbook
Chapter 5 contents:
• Camber and deflection (with examples)
– Class T sections
– Long Term
• Thermal Stresses (with examples)
• Columns (with examples)
• Wall Panels (with examples)
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PCI Design Handbook
Chapter 5 contains information NOT in ACI
318!
• ACI 318 (CH 11) allows the use of the PCI
Design Manual Torsion Design Method, but
gives no details. Design Handbook has
examples.
• ACI 318 (CH 18) requires calculation of
losses, but gives no information except
friction loss. Design Handbook has loss
calculations
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PCI Design Handbook
The Design Handbook refers to PCI
Standard Practices. These are items NOT
in ACI 318, but have they have been
proven to work.
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PCI Design Handbook
• Chapter 6 – Connections
• Can be used in more advanced
courses.
• Has information on embedded
plates, anchored plates and
welded studs.
• 7th Ed includes results of
extensive study of studs by
WJE!
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PCI Design Handbook
• Chapter 7 – Architectural Precast
• Discusses load bearing and nonloadbearing panels.
• Discusses thermal stresses/volume
changes.
• Crack control.
• Wind Pressures (ASCE 7).
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PCI Design Handbook
• Chapter 8 – Product Handling and Bracing
– Excellent for Construction Courses!
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PCI Design Handbook
• Chapter 9 NEW – Materials
– Could be used in a Construction Materials
course.
– Concrete
• Constituent Materials
• Physical Properties
• Finishes
• Grouts
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PCI Design Handbook
• Chapter 9 NEW – Materials
– Connection Materials
– Reinforcement
• Prestressed
• Non Prestressed
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PCI Design Handbook
• Chapter 10 – Design for Fire Resistance
• Chapter 11 – Thermal and Acoustical
Properties
• Chapter 12 – Vibration Design of
Precast/Prestressed Concrete Floor
Systems
• Chapter 13 – Tolerances
31
PCI Design Handbook
• Chapter 14 Specifications and Standard
Design Practices.
• Side-by-side comparison of ACI 318-05
and PCI Standard Design Practices.
• Suggested Specifications for
Architectural Precast
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PCI Design Handbook
• Chapter 15 – Design Aids
– Dead Load and Live Load tables
– Beam tables
– Camber equations
– Material properties
– Standard nuts, bolts and washers
– Welding information
– Section properties
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A Great Feature
Highlighted
references are
contained on
the CD. Just
click and the
reference is
there!!!!
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TEACHING WITH THE DESIGN
HANDBOOK
• Prestressed-in-a-box design examples
(12RB24 beams) are based on 7th Edition
of the Design Handbook.
• The Handbook can function as a textbook.
– Basic Information
– Numerous worked example problems where
appropriate.
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PCI Design Handbook
The PCI Design Handbook is a great
alternative to a standard text book for
prestressed concrete courses!
It is also useful across a wide range of
other CE courses!
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