714.01 Prestressing Steel. Prestressing reinforcement shall be manufactured from high tensile
strength steel or alloyed steel. Reinforcement size and grade shall be designated in the Contract. Prestressing steel materials shall meet the appropriate following requirements:
1.Seven wire steel strand shall meet the requirements of AASHTO M 203. All furnished strand shall be "weldless" per AASHTO M 203, subsection 8.1.4. The Contractor shall furnish one test specimen per coil. Each test specimen shall be 5 to 6 feet long.
2.High tensile alloy bars shall meet the requirements of AASHTO M 275. Unless otherwise approved by the Engineer, the Contractor shall furnish two test bars per diameter size, per heat number. Each test bar shall be 5 feet in length. All testing specimens shall be furnished free of cost. If test specimens are not delivered in time for tests to be performed before time of use, the Contractor may elect to incorporate materials into the work at the Contractor's own risk. All test specimens shall be representative of the furnished material lot. If ordered by the Engineer, selection of test samples shall be witnessed by the Engineer's representative, at any location chosen by the Engineer. All prestressing unit materials shall be subject to interim inspection and testing, before, during and after incorporation into the work, as ordered by the Engineer.
714.02 Anchorage Assemblies. If the anchorage assemblies are not attached to the
reinforcement samples, the Contractor shall furnish two anchorage assemblies, complete with distribution plates, for each size or type to be used when requested by the Engineer.
714.03 Post-tensioning Products. The following lengths of materials shall be furnished by the
Contractor:
1.For strand to be furnished with fittings; 5 feet between near ends of fittings.
2.For bars to be furnished with threaded ends and nuts; 5 feet threads at ends. 714-1 714.03 This Page Intentionally Left Blank 714- 2 715.01
Get an email when 714 changes
Colorado revises spec sections through supplementals and new editions. We check this one every week and email you the day it changes. Free, no account.
Source: 2025 Standard Specifications for Road and Bridge Construction, 2025 Edition. Pages 921–922 of 967. View official source ↗