Evaluation Of The Isogrid Retaining Wall System

Prepared by the Highway Innovative Technology Evaluation Center, a CERF service center. This report presents the results of a HITEC evaluation of the Isogrid Retaining Wall System, designed and developed by the Neel Company. The report describes the basic capabilities and limitations of the Isogrid System for use as a technically viable precast, mechanically stabilized earth retaining wall system. The evaluation was conducted based on material, design, construction, performance, and quality assurance information outlined in the HITEC Protocol. The Isogrid System features a diamond-shaped, segmental precast concrete facing panel with weep holes where four panels intersect and welded wire, grid-type soil reinforcement attached to the center of each facing panel.

Prepared by the Highway Innovative Technology Evaluation Center (HITEC), a CERF service center. This report describes a HITEC evaluation designed to determine the basic capabilities and limitations of the MSE Plus System, manufactured by SSL, LLC, for use as a mechanically stabilized earth retaining system. The evaluation was conducted based on material, design, construction, performance, and quality assurance information outlined in the HITEC Protocol. TheØMSE PlusØSystem features rectangular segmental precast concrete facing panels and galanized welded wire, grid-type soil reinforcement.

Prepared by the Highway Innovative Technology Evaluation Center (HITEC), a CERF Innovation Center. This report describes an evaluation to determine the capabilities and limitations of the KeySystem I Retaining Wall System, a mechanically stabilized earthØstructure developed, designed, and supplied by Keystone Retaining Wall Systems, Inc. The evaluation was conducted based on design, construction, performance, and quality assurance information outlined in the HITEC Protocol. KeySystem I features modular block facing to which KeyStrips are attached. KeyStrips are structural welded wire, grid-type reinforcement produced from high-strength steel.

Prepared by the Highway Innovative Technology Evaluation Center (HITEC), a CERF/IIEC Innovation Center. This report describes a HITEC evaluation designed to determine the basic capabilities and limitations of the INTER-LOK System for use as a technically viable, precast mechanically stabilized earth retaining wall system. The evaluation was conducted based on design, construction, performance, and quality assurance information outlined in the HITEC Protocol. The INTER-LOK System features a cross-shaped, segmental precast concrete facing panel connected to metallic rebar and anchor plate type of soil reinforcement attached to the facing panels by a keyplate that interlocks with the facing panels.

Prepared by the Civil Engineering Innovative Technology Evaluation Center, a CERF innovation center serving the engineering and construction industries. This report presents a CEITEC evaluation of the Trevipark automated parking system, which was developed, designed, and supplied by TREVI S.p.A., of Cesena, Italy. The evaluation is designed to determine the benefits and limitations of Trevipark for use as a technically viable automated vehicle parking system. The evaluation focused on data collection, site inspections, and analyses. The Trevipark system consists of a cylindrical enclosure with a central elevator system to park and store vehicles in a radial pattern. This proprietary system is intended to provide safe and secure parking for lower cost, smaller site and space requirements, less retrieval time, and other advantages.

Prepared by the Highway Innovative Technology Evaluation Center (HITEC), a CERF/IIEC Innovation Center. This report describes a HITEC evaluation designed to determine the basic capabilities and limitations of the Terramesh Retaining Wall System for use as a technically viable, mechanically stabilized earth, retaining wall system. The evaluation was conducted based on material, design, construction, performance, and quality assurance mainformation outlined in the HITEC Protocol. The Terramesh System, supplied by Maccaferri, Inc.,Øfeatures a Gabion basket facing of various configurations and metal double-twisted grid type of soil reinforcement, which is manufactured integrally with the basket facing blocks.

Prepared by the Highway Innovative Technology Evaluation Center (HITEC), a CERF Service Center. his report summarizes the results of an evaluation that was designed to test the performance of 11 seismic isolators and dampers. The devices were tested for stability, response during earthquake simulations, and fatigue and weathering effects.

Prepared by CEITEC, a CERF innovation center serving the engineering and construction industries. This report describes an evaluation of Sewer Scanner and Evaluation Technology (SSET) designed to determine the basic capabilities and limitations of SSET for use as a technicallly viable technology for inspecting sewer pipes. The evaluation focused on the performance and in-service demonstration of SSET. The technology involves digital scanning to obtain a flat, "unfolded" image of the pipeline's interior. This evaluation includes field demonstrations performed at 13 municipal public works agencies throughout North America. Subsequent to this evaluation, SSET was modified to include a fisheye lens camera and fiber optic gyroscope, which replaced the rotating mechanical scanner and mechanical gyroscope. The evaluation confirmed the operability of SSET and its viability in data presentation. A degree of enhancement was recognized with additional features, most notably the ability to produce a digital report of the sewer pipe, to identify vertical deflection in pipes, and to deliver easily comprehensible and manageable results. The evaluation also revealed that SSET cannot reproduce all the features typically available from closed-circuit television (CCTV) inspection. Such features include the ability to clearly see corrosion, infiltration rates, and ovality. The limitations in applicability were determined and an economic comparison of SSET and CCTV is provided.