Columbus, Ohio (PRWEB) May 28, 2014
Serving as the Lead Design Consultant for a Design-Build Team, Resource International, Inc. (Rii) used key innovative Non-Destructive Testing technology (NDT) to accelerate the design and construction of a $54 million interstate widening and reconstruction project; which is now projected to finish a year earlier than originally scheduled.
Rii credits the key to their construction acceleration to the use of innovative technologies and asset management capabilities in the planning and design process of the MRW-71-3.22 Interstate Reconstruction Project.
Using the GPR/Heavy Falling Weight Deflectometer (HFWD), engineers in the field were able to easily determine structural information about the pavement in a very short time throughout this project. This innovative NDT technology provided an accurate estimate of layer thicknesses, pavement abnormalities, pockets of moisture accumulation, presence of voids and material degradation. In addition , Rii’s JILS-20HF FWD, which is a high force Heavy Weight Deflectometer, stimulated the effect of a moving wheel load and provided an accurate estimate of layer moduli without destructive coring and sampling.
Additionally, the Automatic Dynamic Cone Pentrometer (ADCP) system was used to provide non destructive, non intrusive information on subgrade soil strength . This was achieved in matter of minutes instead of hours and days which is often needed for conventional soil strength measurements.
The Rii Team uses unique technological capabilities such as these to give them expertise on
Design-Build, PPP, construction management and transportation asset management projects.
Without these technologies, a pavement failure would be more likely to occur on a project. A pavement failure at even the smallest size during construction would have a significant effect on MOT operations and would cause delays, accidents and increased user cost to the public, Design-Build or PPP teams.
The conventional solution for a pavement failure is to rebuild the shoulder diversion lanes to a sufficient strength. This comes at a substantial cost and loss of time for the client. However, this risk of failure can be unavoidable, depending on uncertainties associated with the condition of pavement and shoulder layers. Thickness variations, voids, abnormalities and localized failures may be unseen to the surface rating process. In addition, drainage, moisture conditions and sub grade soil strength variations require extensive investigation to document.
For the MRW-71-3.22 Interstate Reconstruction Project, the Rii Team proposed a design solution with 95 percent reliability, where the risk and probability of failure was minimized and Rejection Quality Levels (RQL) were set at less than five percent.
The conventional design recommendations for a no risk, high reliability design requires destructive testing, sampling and laboratory analysis at every 400 for each shoulder. This typically takes weeks of field and lab work at substantial cost to the project. In contrast, the Rii Team used non-destructive technology to perform the sub grade soil strength investigation at six to eight minutes each, saving time. Additionally, engineers mapped the pavement and shoulder abnormalities, voids, moisture and thickness. The pavement support stiffness values of all layers at 250 feet took less than two minutes each.
The innovative asset management technologies that were used on the MRW-71-3.22 Interstate Reconstruction Project have been developed, implemented and updated within the past 30 years by Rii. The Rii Team strives to use these technologies in all phases of projects including the development, scoping, maintenance of traffic and construction phase.
About Resource International, Inc.
Resource International, Inc. (Rii) is a broad-based, multi-disciplined professional engineering consulting firm specializing in construction management, information technology and planning and design of building and infrastructure projects valued in excess of $1 billion annually.
This family-run business has evolved over the years to assist public and private clients in finding optimum solutions to improve their environment and infrastructure. Our specialized equipment, technology and resources offer the best solutions.
Company-wide, Rii has a vast pool of employees engaged in transportation planning, design, and construction services. Rii’s Corporate Office is located in Columbus, Ohio, with full-service branch offices in Cleveland and Cincinnati, Ohio; Pittsburgh, Pennsylvania; and Indianapolis, Indiana.