Please see ORBA feedback …

Please see ORBA feedback (comments, questions, and recommendations) in regards to MTO TCP Notice. No. 000-0085 on: Minimum Bracing Requirements for NU Girders Installation.

Supporting attachments where applicable are provided for information and reference.

The revised drawing is much better then at the beginning. However, ORBA still believes that, Ministry needs to revisit and make changes to Construction Note #3, #5 and also keep the intermediate brace 5m from the bearings on skewed bridges.

• Construction Note #3: There is absolutely no need to install intermediate braces immediately after adjacent girder is placed. This brace is arguably needed for 100km/h wind speeds, but we never work when the wind speed is more than 36km/h. The intermediate brace should and could be installed not on the crane time, but after the last girder is placed and the crane is off the clock.

• Construction Note #5: Does MTO realize that, we are not patching the girder, but just filling an embedded pipe with the grout?

• Intermediate Brace: Keep the intermediate brace 5m from the bearings on skewed bridges. MTO is persistent to keep the brace 5m into the girder, why? In this case the 5m distance should follow the girder line not a skew.