The height (y) of the surface profile represents pavement roughness and is a function of spatial distance (x) along the pavement....
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Road Roughness Analysis
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G. Drop-off Area
If the lodging facility has covered passenger pickup/drop-off areas, does the pavement at such area(s), including the required 5' wide access aisle, slope 1:50 or less (critical dimension...
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Station 1-Physical Characteristics
For example, pavement condition requirements for a user group depend on the size and type of wheels and tires of the device or vehicle....
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IDEA Center
IDEA Center The IDEA study (Steinfeld, Paquet, Feathers, 2004; 2005; Feathers, Paquet, Steinfeld, 2004; Paquet and Feathers, 2004) included static anthropometry of occupied wheeled mobility...
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Vertical Alignment-Crest Vertical Curves
minimum length for a crest vertical curve is a function of the stopping sight distance, the algebraic difference in the upgrade and downgrade grades, the assumed height of an object on the pavement...
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When is resurfacing considered to be an alteration?
Examples include, but are not limited to the following treatments or their equivalents: addition of a new layer of asphalt, reconstruction, concrete pavement rehabilitation and reconstruction...
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Tandem Trailblazing in the GRIT Freedom Chair
Move Beyond the Pavement....
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ADA Tolerances - Additional Resources
Handbook, Tile Council of North America, has section on Accessibility https://www.tcnatile.com/products-and-services/publications.html Construction Tolerances for Segmental Concrete Pavements...
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Highway standards suggesting possible applications for pedestrian surfaces
measuring the longitudinal profile of traveled surfaces with an accelerometer established inertial profiling reference ASTM E 1274-03 Standard test method for measuring pavement...
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Questionnaire
The first question, shown in Figure 4, was based on ASTM 1927-28: Standard Guide for Conducting Subjective Pavement Ride Quality Ratings....
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A. Measuring Slope and Cross Slope
First, observe the general slope of the surface and place the builders' level on the pavement at the steepest point parallel to the direction of the slope....
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Current industry standard practices resulting from this project
Current industry standard practices resulting from this project Interlocking Concrete Pavement Institute (ICPI) The ICPI, along with the Brick Industry Association and the National Concrete...
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Common Problems with Parking
Note the clear pavement markings, wide access aisles, and clear vertical signs....
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Conventional Strollers
The small pivoting front wheels on these strollers make them fairly easy to maneuver, but limit their use on unpaved surfaces or rough pavement....
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Starodub, Inc. Ultra-Light Inertial Profiler (ULIP) for Sidewalks
ULIP Ultra-Light Inertial Profiler ULIP is a Segway based sensor and acquisition system for collecting pavement surface data for the computation of ride quality, surface texture,...
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GRIT Freedom Chair
The GRIT Freedom Chair is an all terrain wheelchair that allows people of all mobility levels to Move Beyond the Pavement....
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Road Roughness Measurements
(Sayers, 1998) The Present Serviceability Index (PSI) is another method of measuring surface roughness and performance of pavement....
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Accessibility - Flatness and Lippage
The following are the tolerances published by the Interlocking Concrete Pavement Institute as a result of this project....
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13 [§ 4.7.10]
taking this measurement, the measuring tape should be aligned parallel to the ramp run itself and should stretch from the intersection of the ramp and gutter to the innermost edge of the pavement...
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3.0 Comparison of Research Methodologies
The IDEA study (Steinfeld, Paquet, Feathers, 2004; 2005; Feathers, Paquet, Steinfeld, 2004; Paquet and Feathers, 2004) included static anthropometry of occupied wheeled mobility devices,...
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Freedom Chair at the beach
Move beyond the pavement and onto sandy beaches with the Freedom Chair....
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What kinds of treatments constitute maintenance rather than an alteration?
sealing, surface sealing, chip seals, slurry seals, fog seals, scrub sealing, joint crack seals, joint repairs, dowel bar retrofit, spot high-friction treatments, diamond grinding, and pavement...
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7. References
Evaluation of selected sidewalk pavement surfaces for vibration experienced by users of manual and power wheelchairs....
