Information

  • H8A PRESTRESSING (GENERAL) .

  • Project Name: Tabulam New Bridge.

  • Location: BRUXNER HIGHWAY TABULAM

  • Contractor

  • Prepared by

  • Conducted on

Work Activity Record

  • N.A Not Applicable. N.C Not Checked

1 Have the following inspections been completed by the stressing operator prior to commencement of stressing:

  • (i) Is the concrete around the anchorages in good condition?

  • (ii) Are anchorage components clean and are the wedges free to move inside the taper?

  • (iii) Are the grips in the jack clean, free from dirt and not exhibiting excessive wear?

  • (iii) Are the grips in the jack clean, free from dirt and not exhibiting excessive wear?

  • (iv) Does the jack carry a durable, self-adhesive or positively secured tag which clearly shows:<br>- final stressing pressure,<br>- diameter and grade of the strand for which the jack is to be used,<br>- jack identification number,<br>- corresponding gauge number, and<br>- expiry date of calibration?

  • v) Is there a copy of the current jack and calibration certificate with the jack and gauge on site at all times?

2 During initial stressing, have the following issues been considered:

  • (i) Is the stressing being carried out to the method and schedule determined by the design engineer?

  • ii) Is the stressing being carried out to the load requirements on the structural drawings?

  • (iii) Is a competent person present at the non-jacking end of double live end tendons to check that anchorage blocks and wedges are correctly seated, and to advise the stressing operator and to warn other site personnel to keep clear?

3 Before final stressing is commenced, have the following been checked:

  • (i) Have adequately designed and constructed barriers been erected at the live ends of tendons being stressed?

  • (ii) Has the stressing area been appropriately flagged and have warning signs been displayed?

  • (iii) Has the operator checked that the area is clear and that there are no persons between the jack and the barricade or within 2 metres of any live end anchorage?

  • (iv) Are there adequate clearances available for the jack to prevent possible skewing or lifting during stressing?

  • (v) Do concrete compression tests indicate that transfer strength has been reached?

Compliance and Follow-up action.

  • Is the activity compliant.

  • Surveillance Officer

  • NCPN or memo number.

  • Follow up action

  • Product Non Conformance

  • System Non Conformance

  • Contractor generated NCR

  • Contractor generated a CAR

Matters arising

  • NCPN no

  • Contractors NCR no

  • CAR no

  • Closed out.

  • RMS representative's name

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