PCI Update on Transportation Activities and eLearning Modules for AASHTO Technical Committee T-4AASHTO SCOBS --- Spokane Washington

June 2017William N. Nickas, P.E.Managing Director, Transportation ServicesPrecast/Prestressed Concrete InstituteChicago, IL.

LEARNING OBJECTIVES1. Cover a few Transportation Publications. These include Manuals,

Recommended Practices and State-of-the-Art reports

2. FHWA-AASHTO-PCI contract for advancing complex concrete initiatives.

3. New Contract for Concrete Anchor Implementation

4. Recent Case History of Game Changing accomplishments

Transportation Publications.

These include Manuals, Recommended Practices and State-of-the-Art reports

Manual for Evaluation and Repair

• Organized to address:Root Cause and Solutions

• May be adopted by some plants as part of QSM

• Offers Trouble shooting, Repair and Injection processes

Released in 2006 release Being updated

Precast, Prestressed Concrete Piles

• Excel Workbook addresses:• Pile lofting • multi point picking and handling• Design Interaction Diagrams• Sample Parallel Calculations• and User Guidance

• Pile Recommended Practices:• Originally released in 1993• Being updated• Become a National Standard

Recommended Practice for Stability

• Understand the various stages in the life of a girder 

• Understand root causes of lateral instabilityand the need for analysis.

• Understanding of the concept of roll axis and variety of support conditions.

• Identify the equilibrium conditionsfor supported girder.

• Case studies of knowledge gainedcalculation and modificationto improve stability.

“This addresses a growing need by everyone”

As each of you are seeing more long girders, Today your agency leads the way with the deployment of these recommended practices.

FHWA has a new NHI Class no. 130102 titled “Engineering for Structural Stability in Bridge Construction” and this is 75% steel with 25% concrete.

This new PCI document and the Excel conversion effort underway

FHWA-AASHTO-PCI contract for advancing complex concrete initiatives.

Advanced Precast Element Design and Construction State of Practice

• PCI eLearning Courses T100 series address:• Preliminary Design• Materials and Manufacturing • Loads• Flexural SLS• Flexural ULS• Refined Losses w/o decks• Refined and L.S. w/decks• Shear• End Zone

Advanced Precast Element Design and Construction State of Practice

• PCI eLearning Courses T200 series address Full Depth Precast Decks

• Introduction• Design• Manufacturing and

Construction• Case studies

Advanced Precast Element Design and Construction State of Practice

• PCI eLearning Courses T300 series address Advanced Bridge Solutions

• Extending Spans• Spliced Girders

Advanced Precast Element Design and Construction State of Practice

• PCI eLearning Courses T700 series address Load Ratings

• Overview and methods• Examples

Advanced Precast Element Design and Construction State of Practice

Prefabricated Bridge Elements and Systems for Horizontally Curved Alignments Manual

Objective• Provide guidelines for preliminary and final design

of curved, spliced U‐Beam systems

• Design and detailing using examples 

and reference to constructed projects

• Communicate the current state‐of‐the‐art

as represented by recent completed projects

• Not all encompassing, nor limiting 

the ingenuity of design professionals

Advanced Precast Element Design and Construction State of Practice

Prefabricated Bridge Elements and Systems for Horizontally Curved Alignments Manual

Guidance Manual Chapters1.Curved Precast U‐Beam Concept2.Implementation of Curved, Spliced U‐Girder System3.Project Delivery

Advanced Precast Element Design and Construction State of Practice

Prefabricated Bridge Elements and Systems for Horizontally Curved Alignments Manual

Guidance Manual Chapters5. Preliminary Design and Span Layout6. Modeling and Analysis7. Design Considerations8. Design Details

Advanced Precast Element Design and Construction State of Practice

Bridge Geometry Manual

Guidance Manual Chapters1.Introduction2.Horizontal Roadway Geomtry3.Vertical Geometry4.Roadway Super Elevation

Advanced Precast Element Design and Construction State of Practice

Bridge Geometry Manual

Guidance Manual Chapters5. Working with Horizontal Roadway6. Geometry of Straight Bridges7. Geometry of Curved Bridges8. Segmental Bridges

Advanced Precast Element Design and Construction State of Practice

Bridge Geometry Manual

Guidance Manual Chapters• Appendix A Vector Geometry

• Definitions• Vector Addition and Subtraction• Three Dimensional Vectors• Vector Multiplication• Coordinate Transformation

• Appendix B Example Alignment Geometry

New Contract for Concrete Anchor Implementation

Implementation of Concrete AnchorsPCI contracting with TRB

• Purpose: Accelerate implementation of the new LRFD section for concrete anchor design and minimize State Highway Agency (SHA) overlapping efforts in implementation through the use of a “deployment kit” for nationwide implementation.

• NCHRP 639: Adhesive Anchors in Concrete Under Sustained Load (exploratory report 67 pages plus references)• NCHRP 757: Long Term Performance of Epoxy Adhesive Anchor Systems

Implementation of Concrete AnchorsPCI contracting with TRB

Results of the project to date:

The project to date has focused on adhesive anchors. With the adoption of the eighth edition AASHTO LRFD Bridge Design Specifications, Section 5.13, Anchors, is noted as being applicable to headed studs, headed bolts, certain hooked bolts, adhesive anchors, post installed expansion anchors and post installed undercut anchors. The design specification references ACI 318-14, ACI 355.2, and ACI 355.4. These ACI documents cover structural design of anchors and qualification testing for mechanical and adhesive anchors. It is probable that many design, materials, construction engineers in state DOTs and the transportation industry may not be familiar with these ACI documents or the proper application of these documents and other related documents for design, specification, procurement, or inspection of the various anchor types.

Implementation of Concrete AnchorsPCI contracting with TRB

Test reportsICC‐ES ESRs or ACI 355.2 or ACI 355.4 information

Anchor is graded on performance Anchor categoriesProduct qualification standards

ACI 355.2 (AC193)Mechanical expansion anchor qualification Concrete screw anchor qualificationReport of design requirements

ACI 355.4 (AC308)Adhesive anchor qualificationReport of design requirements

A State Highway Agency does not need to repeat the ICC‐ES AC (ACI) testing protocol for anchor qualification

Implementation of Concrete AnchorsPCI contracting with TRB

PCI-AASHTO Bridge EngineersDraft of One-day Seminar on Anchoring to Concrete/Masonry

General Outline1. Scope and objectives of seminar

2. General background on anchor behavior

3. Available codes

4. Available design software

5. Anchorage selection process

6. Product qualifications, specifying anchors for a project, and anchor procurement

7. Adhesive anchor installer and installer inspector certification

8. Construction compliance testingKnapsack MaterialItems that will be given to each participant after the class Leave workshop with a model Agency Implementation Plan and toolkitTwo Pilots and then ready for broad dissemination 12 months from contract execution. 

Recent Case History of Game Changing accomplishments

PCI TechnoQuest 2016

THANKYOU