1.2.1 Use the plus - or - minus symbol (±) after a dimension when it must be made clear what the expected tolerance is. This should be coordinated with the specification requirements....
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1.2.1
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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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1.2.8 Exterior stairs, cast - in - place
When cast - in - place exterior stairs are measured according to Section 1.1.17 the requirements of the local building code shall govern tolerances....
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104.1.1 Construction and Manufacturing Tolerances
ETA Editor’s Note: For additional information go to ADA Tolerances - Additional Resources or keyword search "Tolerance."...
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Current industry standard practices resulting from this project
With the encouragement of the Access Board project, ICPI developed recommendations for segmental concrete pavement and installation tolerances based on the research they funded. ...
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104.1.1 Construction and Manufacturing Tolerances
104.1.1 Construction and Manufacturing Tolerances....
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F104.1.1 Construction and Manufacturing Tolerances
Advisory F104.1.1 Construction and Manufacturing Tolerances....
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11B-104.1.1 Construction and manufacturing tolerances
Recognized tolerances are not intended to apply to design work....
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11B-104.1.1 Construction and manufacturing tolerances
Advisory 11B-104.1.1 Construction and manufacturing tolerances. Application of conventional industry tolerances must be on a case-by-case, project-by-project basis. ...
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11B-104.1.1 Construction and manufacturing tolerances
Advisory 11B-104.1.1 Construction and manufacturing tolerances. ...
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2.1.2
2.1.2 State the required tolerances for elements for which there are no industry standards....
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2.1.1
2.1.1 Clearly state the required installed tolerances for critical construction elements....
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ADA Tolerances - Additional Resources
ADA Tolerances - Additional Resources Access Board web site: http://www.access-board.gov/ ADA final report on tolerances: www.access-board.gov/research/completed-research/dimensional-tolerances...
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2.1.3
2.1.3 State requirements for critical accumulated tolerances....
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Q1.) When a ramp has a maximum slope of 1:12 or 8.33%, is that considered a range of from 0% to 8.33% which would allow no slope greater than 8.33% or is that a simple maximum which would allow a tolerance above 8.33%? Similarly, is a cabinet countertop that can be no higher than 34” AFF a range of from 0” to 34” AFF with no additional height allowed, or is a tolerance allowed for variations in the floor surface or cabinet construction?
The consistent technical assistance on this question has been that both are subject to tolerances....
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§ 38.4 Miscellaneous instructions
[See subsections ...]
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1.2.4
1.2.4 When local horizontal discontinuities and vertical alignments are measured according to Section 1.1.9 a recommended tolerance is ±1/8 in. (3 mm)....
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2.4.1
2.4.1 Based on the methods for measuring compliance, define what remedial actions are acceptable when construction elements exceed tolerances....
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Q6.) How important is the method of measurement in considering the tolerances allowable in finished construction?
Methods of measurement are critical in determining both compliance and allowable tolerances. The industry’s standards are usually very clear about how to make their measurements. ...
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2 - Specifications
However, many industries do not have tolerance standards or the problematic element may be part of a larger assembly for which there are no standard tolerances, the placement of a toilet...
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Suggested best practices for architects and other design professionals
and applications for accessible surfaces, design professionals must also work to minimize problems caused by tolerance issues....
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Summary of the project
for different walkway materials is a concern; e) accumulated tolerances must be addressed; f) repair, alterations, and maintenance of exterior surfaces are also issues; g) training,...
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Metal measuring tapes
The National Institute of Standards and Technology publishes tolerances for metal tapes in its Handbook 44, Section 5.52....
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Other international standards
Australian NATSPEC Reference Volume 1: Building Works, Concrete Finishes Section Three classes of surface finish based on using a straightedge method of testing:...