Question regarding concrete testing during the Northbridge Tunnel construction. The Minister confirms extensive testing was undertaken and offers access to the reports.

AnsweredQoN 193Legislative Assembly
Asked
9 August 2000
Portfolio
Transport

QuestionView source ↗

(2) In particular was any monitoring made by Main Roads Department or any other independent body of the MPA and slump measurements for the concrete in the tunnel? (3) If so, will the Minister table all such reports and assessment? (4) If not, will the Minister explain why such monitoring did not take place? Answered on 17 October 2000 The Minister

AnswerView source ↗

Answered
17 October 2000
Response time
69 days
(1)-(2) Main Roads undertook extensive parallel testing of concrete during the construction of the Northbridge Tunnel. The program provided for a minimum of one independent test for every three concrete pours but actual testing was in excess of this. In addition the concrete supplier also undertook testing as per their quality procedures. (3) There are approximately 250 independent test reports plus summaries of the supplier's results relating to this project. Main Roads will make these reports available if the Member wishes to review the documents. (4) Not applicable
(3) If so, will the Minister table all such reports and assessment? (4) If not, will the Minister explain why such monitoring did not take place? Answered on 17 October 2000 The Minister Replied: (1)-(2) Main Roads undertook extensive parallel testing of concrete during the construction of the Northbridge Tunnel. The program provided for a minimum of one independent test for every three concrete pours but actual testing was in excess of this. In addition the concrete supplier also undertook testing as per their quality procedures. (3) There are approximately 250 independent test reports plus summaries of the supplier's results relating to this project. Main Roads will make these reports available if the Member wishes to review the documents. (4) Not applicable
(4) If not, will the Minister explain why such monitoring did not take place? Answered on 17 October 2000 The Minister Replied: (1)-(2) Main Roads undertook extensive parallel testing of concrete during the construction of the Northbridge Tunnel. The program provided for a minimum of one independent test for every three concrete pours but actual testing was in excess of this. In addition the concrete supplier also undertook testing as per their quality procedures. (3) There are approximately 250 independent test reports plus summaries of the supplier's results relating to this project. Main Roads will make these reports available if the Member wishes to review the documents. (4) Not applicable
Answered on 17 October 2000 The Minister Replied: (1)-(2) Main Roads undertook extensive parallel testing of concrete during the construction of the Northbridge Tunnel. The program provided for a minimum of one independent test for every three concrete pours but actual testing was in excess of this. In addition the concrete supplier also undertook testing as per their quality procedures. (3) There are approximately 250 independent test reports plus summaries of the supplier's results relating to this project. Main Roads will make these reports available if the Member wishes to review the documents. (4) Not applicable

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