Measuring instruments and accuracy There are many instruments that are currently available for measuring distances and angles as well as the surface roughness of accessible elements....
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Measuring instruments and accuracy
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1.1.1 Measurement tools
For measuring device accuracy, the instrument and technique for measurement should provide for an accuracy of at least one - third the required tolerance....
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Some existing measurement protocols
Some existing measurement protocols Currently there are no generally accepted measurement protocols for determining the slope, flatness, or waviness of floor surfaces in terms of accessibility...
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Compilation of Instruments and Measurement Methods for Surface Accessibility
Compilation of Instruments and Measurement Methods for Surface Accessibility During the course of this project the following information was developed as background information to assist...
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1. Measuring Tape
A measuring tape will make a good surveying instrument if it has the following characteristics: it is metal, which is important for durability; it is 25- to 50-feet long, which is necessary...
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Metal measuring tapes
Metal measuring tapes are the most commonly used tools for measuring distances. They are inexpensive, easy to use, and are available in English or metric units....
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Using the Tape Measure
A tape measure is used to measure the length, width, height, and depth of various elements including parking spaces and access aisles, routes, thresholds, doorways, and protruding objects...
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Taking Measurements
Taking Measurements Sloped Surfaces One way to measure slope is to use a 24-inch level with leveling bubble and a tape measure....
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B. Measuring Clear Passage at Doors
Verifying the clear passage width at standard hinged doors requires an understanding of exactly where to measure....
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Measuring Door Openings
Special care is needed when measuring the clear opening of a doorway. To measure the clear opening of a standard hinged door, open the door to 90 degrees....
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Suggestions by Jean Tessmer
a digital inclinometer mounted to measure 1 - foot increments....
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Unified Facilities Guide Specifications
The straightedge is to be held in contact with the surface and moved ahead one - half of the length of the straightedge for each successive measurement....
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Electronic instruments
Electronic instruments have been developed to measure floor flatness....
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2.3.2
2.3.2 Define the measurement tools that should be used....
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3. Camera
Use the camera to take photos of everything measured for accessibility so you can easily determine the exact location of features that may need to be modified. ...
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Areas for further work
Design issues: Existing industry tolerances Units of measure Measurement instruments Accuracy of instruments/measurement uncertainty Use of significant...
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5. Other Helpful Tools
Many surveyors find other tools helpful, such as a clipboard to hold survey forms, a binder to hold survey instructions, a tabbed accordion folder to hold copies of survey forms, a...
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1.1.8 Alternate measurement tools
1.1.8 Alternate measurement tools....
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Sloped Surfaces
Two slope measurements perpendicular to one another should be taken at each location....
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Construction Specification Institute
Construction Specification Institute While developing suggested tolerances for surface materials, the Construction Specifications Institute developed a suggested method for measuring ramp...
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2. Electronic (Digital) Level
Make sure there are no pebbles or other debris under your level when you measure slopes and cross slopes....
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I. Required Survey Tools
The following tools will be required to allow you to accurately complete the ADA Checklist for New Lodging Facilities: A. 12' Stiff Metal Tape Measure B. 24" Long Builders' Level (Square...
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Taking Photographs
We recommend taking photographs of measurements and noncompliant elements such as steps. It is likely that others may review information about the facility you are surveying. ...
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Performance and the Surface Deficiency Score
A digital level and tape measure were used to identify instances along the accessible routes and at clear floor spaces where the surface running slope exceeded 1:16 (6.25%); the cross slope...