711.27 Prestressing Steel

1. Specification:

711.27 C&MS.

2. Sampling and/or Inspection Requirements:

Generally only supplied to Prestressing plants but can be used for post tensioning, the 7 wire strand should be inspected for dimensions including overall nominal diameter and lack of pitting from any free rust. Surface rust than can be wiped off is acceptable. (Field)

Material is delivered on reels and will have the a tag affixed to the reel with the following markings:

Length

Size of strand

Type of Strand

Grade of strand (250 ksi or 270 ksi)

ASTM specification

Manufacturer identification

Where materials are supplied directly to the field, i.e. post-tensioning, material certifications should be provided showing the requirements of the ASTM specification.

Plant Sampled and Tested Materials:

Material is sampled and tested under the Plant Sampling and Testing Plan, Appendix "E". (OMM) If the material fulfills the requirements it may be used immediately. If the material does not fulfill the requirements, then it shall be rejected.

3. Methods of Test:

(OMM)

ASTM A416, A370, E328