COMPLEX PROJECTS – PART II · COMPLEX PROJECTS – PART II I-25/Arapahoe and E-470 Widening CMGC Projects Kraemer North America, LLC Tim Maloney and Mike McNish

COMPLEX PROJECTS – PART III-25/Arapahoe and E-470 Widening CMGC ProjectsKraemer North America, LLCTim Maloney and Mike McNish

RMACES 2017 – Merging Talent with Technology to Improve Performance

Complex Projects – Overview

CMGC Delivery Method Introduction–What is CMGC?– Added value from early contractor involvement

I‐25/Arapahoe CMGC Project– Overview, status, benefits of CMGC delivery

E‐470 Widening CMGC Project– Overview, status, benefits of CMGC delivery


Introduction to CMGC

CMGC– Construction Manager/General Contractor

Involves a Contractor (or team) in Both the Design and Construction Phases of a Project


Introduction to CMGC


CMGC – Delivery Method

Owner Selection of CMGC Method– Project Delivery Selection Matrix (CDOT)

Not for Use on Every Project Unique Projects – Aspects Include:

–Major risk elements– Schedule, phasing complexity– Need early contractor input to mitigate risk


CMGC – Overview of Process Contractor Selected Early in Design Partnership with Owner, Designer “Project First” Approach for Decisions Collaboration, Communication, Cooperation Cost, Schedule, Risk Evaluated with Every

Design Decision Have “Sat at the Table” Throughout Design

Gives a Great Understanding of What We’re Building


CMGC – Contractor’s Role Early Estimate – Cost Model/Owner Budget Schedule Risk Identification and Mitigation Innovation Constructability Review Quantity Reconciliation Contract Language/Specification Review

– NOTE: ALL THESE APPLY TO BOTH PRIME AS CMGC AND SUBCONTRACTORS INVOLVED DURING PRECONSTRUCTION


CMGC – Added Value

Reduction of Risk for Owner, Contractor– Build schedule early– Phasing opportunities

Subcontractor Involvement Pavement Type Selection Cost Estimate Approach – Full Understanding

of Project Risk, Constraints, Schedule, Phasing Opportunities for Risk Pool/Risk Items


I-25 and Arapahoe Road Interchange


Project Overview

Scope: Reconstructed Existing Interchange Owner: CDOT Contract Value: $52MM Schedule:May 2016 to July 2016 Asphalt Paving by Brannan Sand and Gravel 77,000 Tons of Permanent Asphalt 14,000 Tons of Detour

Project Challenges Traffic and

180,000+ Vehicles per Day

Tough Access Difficult Phasing Significant Grade

Changes on Arapahoeand I‐25

Current Status


CMGC Benefits During Bid Multiple Plan Reviews as Designed Developed

– 30%, 60% and 90% Plans Met with General Contractor to Discuss Phasing

and Schedule Discuss Expected Productivity and Number of

Mobilizations Compared to Bid‐Build Projects Don’t Know the GC’s Phasing Minimal Time to Prepare Bid Low Bid and Not Best Value


November 2016


Difficult Access

Asphalt Benefits to Phasing

Existing Concrete Interchange to New Asphalt

Variable Depth Asphalt Overlays

Accelerated Construction with Weekend Closures

Reduced Risk for Asphalt Contractor

Detour Paving Paid by the Ton

Fully Understand Phasing and Mobilizations

Thanks to Brannon Sand and Gravel

Thanks to Brannan Sand and Gravel

E-470 Widening Parker Rd to Quincy Ave


E-470 Widening Overview

Scope: Road Widening and overlay Owner: E‐470 Highway Authority Contract Value: $78MM Schedule:May 2016 to December 2017 Asphalt Paving by Martin Marietta Materials 125,000 Tons HMA 71,000 Ton SMA


Parker Road Interchange


CMGC Benefits Owner had Concerns with Budget

– Early asphalt quotes that gave confidence to construct full project limits

Production Paving Project– Efficiency to asphalt pavers would make project successful

– Focus on maximizing efficiency with quantities, access and areas of work

Multiple Contract Packages to Maximize Paving Season


Production Paving


E-470 Project Challenges

Joint Detail with Old and New Pavement

Mill and Overlay with 2’ Wide Petrotec

Open SB 3rd Lane from Gartrell Rd to Parker Rd by Dec 2016

Smoothness and Risk Mitigation on Overlay

Thank You Martin Marietta

Thank You Martin Marietta

QUESTIONS?

Documents

COMPLEX PROJECTS – PART II · COMPLEX PROJECTS – PART II I-25/Arapahoe and E-470 Widening CMGC Projects Kraemer North America, LLC Tim Maloney and Mike McNish