officedweller
Senior Member
If Metrolinx is opting for a procurement model that follows the "design, finance, build, operate and maintain" model, then obviously Metrolinx will NOT have detailed designs available because those details will be developed and provided by the proponents and each proponent might propose a design variant.
In many procurement cases, the "design" provided to the proponents is a "reference concept" not a micro-managed design that must be strictly adhered to. If that is the case, it would be inaccurate and misleading for Metrolinx to provide details to the public that may not end up being used.
That was the case with the Canada Line in Vancouver. The reference concept suggested bored tunnel, but the bid eventually chosen used shallower cut and cover tunneling. The reference alignment also suggested tunnels under the median of Cambie Street, but the accepted bid placed the tunnel under the northbound lanes instead, so a large hydro conduit did not have to be moved. Even the accepted bid evolved over time, using less stacked tunnel and more side-by-side tunnel than originally proposed.
So just because details are not being provided doesn't mean that they don't know what they are doing
- they just aren't doing it the way that TTC / City of Toronto has done things historically (micromanaging and procuring piecemeal).
In many procurement cases, the "design" provided to the proponents is a "reference concept" not a micro-managed design that must be strictly adhered to. If that is the case, it would be inaccurate and misleading for Metrolinx to provide details to the public that may not end up being used.
That was the case with the Canada Line in Vancouver. The reference concept suggested bored tunnel, but the bid eventually chosen used shallower cut and cover tunneling. The reference alignment also suggested tunnels under the median of Cambie Street, but the accepted bid placed the tunnel under the northbound lanes instead, so a large hydro conduit did not have to be moved. Even the accepted bid evolved over time, using less stacked tunnel and more side-by-side tunnel than originally proposed.
So just because details are not being provided doesn't mean that they don't know what they are doing
- they just aren't doing it the way that TTC / City of Toronto has done things historically (micromanaging and procuring piecemeal).