Evaluation Findings Of The Mx 30 Pavement Marking Retroreflectometer
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Evaluation Findings of the MX 30 Pavement Marking Retroreflectometer
Author: Highway Innovative Technology Evaluation Center (U.S.)
language: en
Publisher: ASCE Publications
Release Date: 2000-01-01
Prepared by the Highway Innovative Technology Evaluation Center (HITEC), a CERF service center. This report presents the results of a detailed evaluation ofØthe MX 30 pavement marking 30-meter retroreflectometer. The evaluation is designed to test the measurement bias, repeatability, and reproducibility of handheld and mobile retroreflectometers produced by several manufacturers.
Summary of Evaluation Findings for 30-meter Handheld and Mobile Pavement Marking Retroreflectometers
Author: Highway Innovative Technology Evaluation Center (U.S.)
language: en
Publisher: ASCE Publications
Release Date: 2001-01-01
Prepared by the Highway Innovative Technology Evaluation Center (HITEC), a CERF Innovation Center. This report summarizes the results of detailed evaluations performed on four handheld and two mobile pavement marking retroreflectometers. The evaluations were designed to test the measurement bias, repeatability, and reproducibility of handheld and mobile retroreflectometers produced by several manufacturers.
Evaluation of the Geo-Con VERT Wall System
Author: Highway Innovative Technology Evaluation Center (U.S.)
language: en
Publisher: ASCE Publications
Release Date: 2002-01-01
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 capabilites and limitations of the Geo-Con VERT Wall for use as a technically viable permanent excavation support retaining wall system. The evaluation was conducted based on design, construction, performance, and quality assurance information outlined in the HITEC Protocol. The Geo-Con VERT Wall System is an in-situ retaining wall system intended as an alternative to other types of cut walls such as soldier pile and anchored retaining walls. Geo-Con VERT Wall System is comprised of: deep soil mix columns consisting of overlapping or tangent soil-cement columns along the front face backed up by tangent rows of overlapping soil-cement columns; a soil-cement relieving platform overtop the columns; steel beams embedded in the front face soil-cement columns for support of the permanent facing; and permanent facing consisting of precast, reinforced concrete panels or reinforced cast-in-place concrete. The relieving platform is intended to provide internal stability by typing the soil-mix columns together and transferring the load to the bottom of the columns.