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Supplier: ASTM International
Description: This specification covers the requirements for carbon and alloy steel compressible-washer- type direct tension indicators (DTIs) capable of indicating a specified bolt tension in cap screws, bolts, anchors, and studs. These DTIs are intended for installation under a bolt or cap
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Supplier: ASTM International
Description: -purpose mechanical and structural use with bolts, nuts, studs, DTIs, and other internally and externally threaded fasteners. These washers are suitable for use with fasteners covered in Specifications A354, A193/A193M, A194/A194M, A320/A320M, F959/F959M, A449, A563, A563M, and F3125.
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Supplier: ASTM International
Description: -purpose mechanical and structural use with bolts, nuts, studs, DTIs, and other internally and externally threaded fasteners. These washers are suitable for use with fasteners covered in Specifications A354, A193/A193M, A194/A194M, A320/A320M, F959/F959M, A449, A563, A563M, and F3125.
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Supplier: AASHTO Publications
Description: structural fasteners; • Locate and interpret the appropriate industry standards for joint and fastener types and specifications; • Conduct and audit torque-tension and ROCAP tests and verify test records; and? • Explain the check points and how you would audit to verify proper assembly for the
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Making the Case for Tension Indicating Fasteners
DTIs can be as simple as single-use DTI washers or as com- plex as bolts connected to expensive ultra- sonic load sensing equipment.
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A hybrid friction-yielding damper to equip concentrically braced steel frames
2-2- Direct Tension Indicator ( DTI ) washer : When the bumps on the washer are flattened by tightening the bolt, this provides an indication that the bolt has been pre- tensioned (Grigorian and Popov, 1994).
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ECCS News: Steel Construction 1/2012
Frans Bijlaard informs the committee about the latest developments on DTI washers .