Research Update on Selected Buried Structures Topics to ......• 13 Apr 17 Fundamentals of Resilient and Sustainable Buried Structures, Kevin Williams (AIL), Eric Carleton (NPCA),

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Research Update on SelectedBuried Structures Topicsto AASHTO SCOBS T-13

Jesse L. Beaver, PE, P.Eng, Principal

Chair, TRB AFF70 - Culverts & Hydraulic Structures

13 June 2017

Outline

1. Seam Strengths for Deep Corrugated Structural PlateStructures – Buried Bridges

2. TRB Committee AFF70 Culverts and HydraulicStructures – Research Update

3. 2017 AASHTO Bridge Committee Agenda Item 14 -New Culvert and Storm Drain System Inspection Guide

13 June 2017 Presentation to AASHTO SCOBS T-13 2

Deep Corrugated Structural Plate

Longitudinal Seam Strengths


Research and Testing Results Update

• Testing is complete

• Draft ASTM standard for testing and calculation of seamstrengths was developed

• Revised Seam strengths are balloting for inclusion inA796



Seam Strength Test Specimens


SetSpecified PanelThickness (in.)

Net PanelLength (in.)1

BoltDiameter (in.)

1 0.170 (8 GA)

45 3/4

2 0.188 (7 GA)

3 0.218 (5 GA)

4 0.249 (3 GA)

5 0.280 (1 GA)

7 0.313 (0 GA)30 7/8

8 0.375 (000 GA)

Specimen Instrumentation

• Vertical displacement – min3 locations

• Bolt rotation – min 3locations

• Load– Min every 10 s

– Accurate within 0.5% ofultimate load

• Three plate length– For 45” plate = 11 ft - 3 in.

– For 30” plate = 7 ft - 6 in.


Typical Failure Modes

• Buckling Failure • Bolt Shear Failure


DRAFT ASTM Standard - Test Method for Determiningthe Ultimate Strength of Deep Corrugated StructuralPlate Bolted Longitudinal Lapped Seams

• At ASTM A05 as Main Committee Ballot

• Includes failure modes assessment for bolt hole bearing,bolt prying, bolt shear failure, and local buckling

• Specifies specimen type, instrumentation, and testmethod

• Annex A1 for specimen preparation


DRAFT ASTM Standard - Test Method for Determiningthe Ultimate Strength of Deep Corrugated StructuralPlate Bolted Longitudinal Lapped Seams

• Annex A2 for calculating ultimate seam strength

– A2.2 Compression Strength

– A2.3 Bolt Shear Strength

– A2.4 Bolt Hole Bearing

– A2.6 Ultimate Seam Strength – Specimen (3 min)

– A2.7 Ultimate Seam Strength


TRB AFF70 Research Update

• Ongoing Research - NCHRP

• AFF70 Research Dissemination– Webinars

– Presentations/Publications

• AFF70 Research Development– Subcommittees

– Triennial Strategic Plan

– Research Needs Statements


NCHRP Projects

• http://www.trb.org/NCHRP/NCHRPProjects.aspx

• 14-19 Culvert Rehabilitation (discontinued, shifting to 14-19A)

• 4-39 Performance recycled PE pipe (active)

• 15-54 Culvert load rating (active)

• 14-26 Culvert inspection manual (complete 2016)

• 20-02 (347) Test methods for watertightness of culvertjoints (complete 2015)

• 15-38 Structural design of joints (complete 2012)

• 15-28 Update to CANDE software (complete 2011)


AFF70 Webinars

• https://webinar.mytrb.org/Webinars

• 23 Jun 16 - Introduction to Structural Design of BuriedBridges (Non-Seismic), Jesse Beaver (SGH), Joel Hahm(Big R Bridge), Philip Creamer (Contech)

• 30 Jan 17 Introduction of the New Culvert and StormDrain System Inspection Manual, Ray Trujillo (NMDOT),Jesse Beaver and Matt Richie (SGH)

• 13 Apr 17 Fundamentals of Resilient and SustainableBuried Structures, Kevin Williams (AIL), Eric Carleton(NPCA), and Michael Pluimer (Crossroads)


AFF70 Annual Meeting

• AFF70 had 11 papers presented and 2 published• 3 lectern sessions and 1 poster session (with AFS40 papers)

– Load rating and load applications to culverts and buried bridges– Laboratory and physical testing of culvert structures– Culvert and storm drain inspection and service performance– Analytical methods in soil-structure interaction

• Committee technology transfer (informal presentations)– Goldset culvert selection module– Design of paved inverts– Virginia DOT pipe joint policy

• Workshops– Part 1 – Culvert rehabilitation methods and design– Part 2 – Culvert industry innovations

• Subcommittee Reports– Buried Bridges, Joel Hahm (Big R Bridge)– Resilient & Sustainable Buried Structures, Kevin Williams (AIL)


AFF70 TSP Possible Research Topics

• Seismic design of culverts, storm drains, and buriedbridges

• Sustainable construction practices and materials

• Resiliency needs to resist natural disasters

• Acceptable levels of deterioration before rehabilitation

• Update design tools such as analysis and designsoftware CANDE

• Improved inspection technologies and methods

• Assessment of the existing condition of installed pipes

• Structural design methodologies for rehabilitation

• Structural design for selected service life

• Standardize safety factors between culvert barrelmaterials


AFF70 TSP Possible Synthesis Topics

• Non-destructive methods for deflection measurement

• How do DOTs spend their current dollars on culverts,storm drains, and buried bridges

• What are the observed failure modes and mostsignificant maintenance needs for culverts, storm drains,and buried bridges

• How do DOTs select, design, and specify new culvertmaterials. Are DOT staff trained to design buried pipes?If not, is training and software desired in lieu ofrequirements for consultant designed buried pipes?


AFF70 Research Needs Statements


AFF70 2017 #1 - Improved Reliability of Buried Structures Designsby Use of Modulus-Based Installation Quality Control

• Leverage the modulus-based quality control/quality assuranceexperience of the pavement base and subgrade to improve culvertbedding and backfill construction.

• Develop the technology for establishing target modulus values forthe soils used for culvert bedding and backfill.

• Demonstrate the benefit-cost relationships for modulus-basedculvert bedding and backfill installation.

• Establish an implementation plan for this technology.

• Recommend guidelines for incorporation into AASHTO design andconstruction specifications.


2017 AASHTO Bridge Committee Agenda Item 14

New Culvert and Storm Drain System

Inspection Guide


2017 AASHTO Bridge Committee Agenda Item 14New Culvert and Storm Drain System Inspection Guide


Culvert and Storm Drain System Inspection Guide

• Background - This new guide will replace in entirety the 1986culvert inspection manual published by the FHWA. The new guidewas completed in May 2016 as part of NCHRP Project 14-26,resulting from a research statement developed by TRB CommitteeAFF70 and sponsored by AASHTO SCOBS T-13-Culverts. Theoversight panel for the research included representatives from 5DOTs, FHWA, 3 pipe trade associations, and 2 Universities.

• Anticipated Effect - The inspection guide will provide guidance forall culvert sizes with spans less than the minimum bridge-length of20 ft. In addition, inspection provisions in the guide may beapplicable to long-span buried bridge structures such as metalarches, precast concrete arches, precast three-sided structures, andprecast box structures to augment the procedures currently used forinspection and load rating. The guide also recommends inspectionfrequency for structures with spans greater than 10 ft be completedon a 2-yr basis, similar to procedures required for highway bridges.

• NCHRP Project 14-26 Final Report -http://onlinepubs.trb.org/onlinepubs/nchrp/docs/NCHRP14-26_FR.pdf


Inspection Guide Table of Contents


• Introduces culvert and storm drain system inspection

• Outlines need for standardized inspection program

• Provides the manual objectives

• Identifies the intended audience

• Instructs users on the manual organization and use forinspections.


Section 1 – Introduction

Section 2 – Design and Performance Characteristics

• Introduces the general factors that affect structural andfunctional performance of culvert and storm drain barrels

• Introduces structural shapes and materials for pipe,coatings, and linings

• Introduces various culvert and storm drain systemcomponents.

• Refers to Appendix A for additional details


Section 3 – Inspection Procedure

• Covers inspection frequency

• Details preparation and planning inspections

• Provides types of inspections/entry with action sequence

• Recommends qualifications of the inspector and teamand lists typical equipment

• Provides quality control and quality assurance practices

• Introduces inspection safety


Section 4 – Condition Rating System

• Provides quantitative criteria for rating the condition ofculvert and storm drain system components

• Tables instruct assignment of a condition rating from 1 to5 using specific criteria obtained by visual inspection orbasic measurements


Section 5 – Inventory Management

• Presents tools for developing a culvert and storm draininventory and asset management program

• Gives examples for culvert and storm drain assetmanagement practices

• Provides references for further research into thissignificant topic


Appendix A – Structural Shapes and Materials

• Augments Sections 2 and 4

• Describes culvert and storm drain barrel shapes

• Lists common culvert and storm drain barrel materials

• Describes culvert and storm drain system components


Appendix B – Distressed Conditions Catalog

• Provides inspectors with a visual comparator forassessing the condition of typical culvert and storm drainsystem component

• Organized to match the distress conditions listed incondition rating tables of Section 4

• Includes a range of distress advancement for specificcomponents and specific distress modes


SGH Action on Ballot

• Task 1 - Address T-13 comments and prepare for ballot (done)

• Task 2 - Present at AASHTO SCOBS Meeting (in-progress)– Present to to T-13

– Support T-13 presentation to SCOBS General Session

• Task 3 – Address ballot comments– Consolidate responses in comment tracking spreadsheet

– Address revisions to guide based on SCOBS comments

• Task 4 – Final Deliverable– Produce a final version

– Provide all electronic supporting files to AASHTO publications

• Task 5 (Optional) – Collect Stakeholder Feedback– Allow one year of stakeholder use to determine if guide should be

balloted to become a manual.

– Collect DOT feedback (between Jun 2016 – Jun 2017), revise guideand ballot as manual


Jesse L. Beaver, PE, P.Eng, Principal

Chair, TRB AFF70

781-907-9272, [email protected]


Documents

Research Update on Selected Buried Structures Topics to ......• 13 Apr 17 Fundamentals of Resilient and Sustainable Buried Structures, Kevin Williams (AIL), Eric Carleton (NPCA),