On-Going NCHRP Construction Research

Doug Gransberg, PhD, PEdgran@iastate.edu

AASHTO Subcommittee on ConstructionAugust 2016

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© 2016, All rights reserved, Douglas D. Gransberg

Active NCHRP ProjectsNCHRP Title PI Status

19-10 AASHTO Partnering Handbook, 2nd ed. Gransberg – ISU 2nd year

24-44 Geotechnical Risk Management Guide for DB Projects

Gransberg – ISU 2nd year

08-104 Contracting Strategies Guidebook for Administration of Concurrent Regional Emergencies

?? Pending

08-107 Post-Award Contract Administration for Alternative Contracting Methods

Molenaar - CU 1st year

20-07 (373)

Utility Coordination Using Alternative Contracting

Gransberg - ISU 1st year

47-02 AD/AB Pavement Type Gransberg - ISU Complete

47-06 Optimizing Program Delivery Methods Tran – U Kansas Complete

47-09 Practices for Establishing Contract Completion Dates

Sturgill -UKY On-going

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Construction Research Past

• Means• Methods• Materials• Quality Control - Oriented

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Construction Research - Present• Alternative project delivery• Risk management• Collaboration• Integration• Process- Oriented

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Construction Research Future• Institutionalize collaborative business

practices• Visualize construction in virtual space• Use private financing• Artificial neural networks• Exploit data• Information-Oriented

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Exploit and Leverage Data

• What information is needed?• How can information add value in real-time?• How do we do more work with the current

amount of resources?THE RESEARCH COMMUNITY NEEDS DIRECTION

FROM YOU!

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Snapshot of Things to Come

• Dr. David Jeong - ISU

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Research Needs8

Data – Information - Decision9

Active PathInactive PathNon-Existing Path

Planning Phase

Design Phase

Bidding Phase

Construction Phase

Operation Phase

DMA DMB DMN

I1N I21 I22 I2n Im1 Im2 Im3 ImnI12

D11 D12 D13 D14

I11

D1n D21 D22 D23 D2n Dm1 Dm2 Dm3 Dmn

Decision

Information

Data

…..

DATABASE I DATABASE II DATABASE N…………….

…..

…..…..

…..…..

….....

Legend :

Potential applications

• Unit Price Space Maps• Automated As-built Schedule Development• Process Map / Exchange Requirement Matrix

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Deep Data Analytics of Unit Price Data

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Table

Text

Analysis

Geoprocessing

Conversion

Cleaning

Data Selection

Pattern, And Stat

Processed Data

Spatial Data

Iowa DOT Bid Data

Spatial Interpolation Map

Shapefiles

Bid Tabulation Data GIS Spatial Analysis

Unit Price Trend Analysis

$-

$500

$1,000

$1,500

$2,000

$2,500

$3,000

$3,500

$4,000

7/6/20091/22/20108/10/20102/26/20119/14/20114/1/201210/18/20125/6/201311/22/20136/10/201412/27/20147/15/2015

$/to

n

Let date

Unit cost over time

Unit cost ($/ton) Linear (Unit cost ($/ton))

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Unit Price Trend Analysis

0 200 400 600 800 1000 1200

Quantity (ton)

Unit cost vs quantity

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Unit Price Space Map14

Deep Data Analytics of Daily Work Report Data

• Since late 1990s, Digital Daily Work Report(DWR) Systems have been developed and used by State highway agencies

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General Information

•Project ID•DWR date•Work suspension and resume

time•Presence of contractor•Day charging•Approval

Work activities

•Project ID•DWR date•Work item•Quantities of work

performed•Location•Contractors performing the

work

Weather information

•Low and high temperature, •General weather (sunny,

cloudy, wind etc.)•Rainfall•Ground condition (dry, wet,

hard to work)

Equipment

•Euipment name/type/id•Number of equipment•Hours used

Labor

•Labor type•Labor number•Labor hours

Remarks

•Significant communications with the contractor

•Significant events•Delay cause

As-built Schedules• Shows actual

sequences and durations of construction activities

• Takes account of change orders and schedule changes from the originally planned schedule

• Project level vs activity level as-builts

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Project level

Activity level

To date FinalBy TimeBy Level

Project control Delay claims

Bar chart

Cumulative quantity chart

Visualization

Uses

Categorization

As-planned schedule

Planning Construction

As-built to date schedule

Final as-built schedule

Construction begins

Construction completes

Post construction

Time

ABSS - prototype17

ABSS – Activity level ABS

• Detailed project control

• Identify dates when productivity was low

• Predict time to complete the task based on the current productivity

• Manage inspection resources

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0

5000

10000

15000

20000

25000

30000

35000

40000

45000

Qua

ntity

of c

oncr

ete

ditc

h pa

ving

(S

QYD

)

Date

December 2012

Constant productivity line

January 2013

Guide to Digital Data Workflows 19

Process map 20

Phase

Task

ER

Actor

PROCESS MAP

Database

ERsData Attributes

Exchange Requirement Matrix

Summary

• Analog -> Digital (transformative changes)• Deep data analysis is possible• Better and smarter decision making and

project delivery

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Questions???23

© 2016, All rights reserved, Douglas D. Gransberg