Update to SP109S24 - Amendment to OPSS 909, November 2016

TCP number
000-0225
Notice type
Standard
Applies to
SP - Special Provisions
No. specification
SP109S24
Posted by
Structures Office
Notice stage
Decision
Decision posted
Comment period
October 9, 2024 - October 30, 2024 (21 days) Closed
Last updated

This consultation was open from:
October 9, 2024
to October 30, 2024

Decision summary

This Special provision will be published and implemented in CPS.

Decision details

SP109S24 has been updated & consulted on TCP. The update included the modification to crack repair criteria and revisions to the description of “Stress immediately prior to transfer”. As a result of feedback received from industry further changes have been made as mentioned in the next section.

Comments received

Effects of consultation

The use of frictionless devices is recognized to account zero friction loss when used in prestressing of drapped strands. Limit of repairable crack width is added as 0.3mm.

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Original proposal

TCP number
000-0225
Type notice
Standard
Posted by
Structures Office
Proposal posted

Comment period

October 9, 2024 - October 30, 2024 (21 days)

Proposal details

  1. SP has been updated to include repair criteria for cracks having width greater than 0.2mm.

      2. Stress immediately prior to transfer’ has been defined in accordance with S6-19 to make it clear that Short-term losses            including relaxation will now be the responsibility of the precaster to calculate as they have control over these losses.

Comment

Commenting is now closed.

This consultation was open from October 9, 2024
to October 30, 2024

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