ASTM-A416 › Historical Revision Information
Standard Specification for Steel Strand, Uncoated Seven-Wire for Prestressed Concrete
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Scope
1.1 This specification covers two types and two grades of seven-wire, uncoated steel strand for use in pretensioned and post-tensioned prestressed concrete construction. The two types of strand are low-relaxation and stress-relieved (normal-relaxation). Low-relaxation strand shall be regarded as the standard type. Stress-relieved (normal-relaxation) strand will not be furnished unless specifically ordered, or by arrangement between purchaser and supplier. Grade 250 [1725] and Grade 270 [1860] have minimum ultimate strengths of 250000 psi [1725 MPa] and 270000 psi [1860 MPa], respectively, based on the nominal area of the strand.
1.2 The values stated in either inch-pound units or SI units are to be regarded as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.
Keywords
prestressed concrete; seven-wire strand (tendon); steel wire; ICS Number Code 77.140.15 (Steels for reinforcement of concrete)
To find similar documents by ASTM Volume:
01.04 (Steel--Structural, Reinforcing, Pressure Vessel, Railway)
To find similar documents by classification:
77.140.15 (Steels for reinforcement of concrete)
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Document Number
ASTM-A416/A416M-99
Revision Level
1999 EDITION
Status
Superseded
Modification Type
Revision
Publication Date
Sept. 10, 1999
Document Type
Specification
Page Count
5 pages
Committee Number
A01.05