Triggered review of Concrete for Engineers course materials (from 1982, so practice may have evolved!). Temperature of concrete should be kept above 0 C at all times The water and/or the course aggregate may be heated in the concrete batching process to prevent freezing during transport and at...

Anyone know if the electricity system operator (ieso.ca) has de-energized the transmission circuits beside those cranes? If a crane failed or experienced unexpectedly high wind loads it could come into contact with a conductor - establishing a path to earth for ~140,000V. That would be fatal...

Metrolinx posted a Request for Qualification & Quote for Consultant Services for GO Expansion Track and Track Related Projects on Friday (19th Dec). The description includes: "In the delivery of multi-phased rail corridor service expansion programs, the Metrolinx Asset Management & Maintenance...

But the Netherland's key strategy is getting people out of single-user vehicles. The modal share of private motor vehicles for the Amsterdam area was only 43% compared to Toronto CMA at 76%. In accordance with stereotype, it's cycling that contributes the most, with walking and public...

Yes, the original study area was big enough to cover a route from N Brampton to Guelph. But the "Halton Peel Boundary Area Transportation Study showed the need for an expressway between Mayfield Rd and the 401/407 junction and the GTA-West scope changed to take in that proposal. Those of...

The "Corridor Missions" presented at the last Metrolinx Board meeting suggest that the first incremental service upgrade will be 60-min All-day service to Kitchener. Which will require building the grade separated junction between Winston Churchill Blvd and the Credit Bridge (not at Silver...

It's generally assumed that Alto will purchase the Havelock sub from CPKC and grant them night-time running rights for the once a day freight movements needed to server their customers.

It goes under Don Mills but re-emerges before the CPKC bridge and there's a surface stop, in the centre of the road, at the foot of Leslie. Then it goes back underground before Brentcliffe

I found slides from the 2024-0306 & 2025-04-09 ECWE Open House presentations. The cross section of the guideway changes along it's length - wide single deck coming off the E portal over Jane, 3-track solid section E of Jane Station, 2 track solid section to the Humber, River, 2 separate...

Scaffolding removed on the recreated hotel facade. They did a good job.

How many lane kilometres of 400-series highway has the province built since 1990 and how many track-miles of passenger rail? One low-spend year (while waiting for the 413 and Bradford Bypass to start) doesn't redress the poor investment in rail that's occurred under every government.

That's interesting. I think there's currently a line of columns under each of the tracks, echoed in the floor design. Metrolinx wants to change the location of some track to open up wider platforms and it could be a major challenge to structurally reinforce the roof of the concourses to...

This City of Toronto page states that the stations "in development" are: East Harbour, Bloor-Lansdowne, St. Clair-Old Weston. With Finch-Kennedy & King-Liberty deferred due to lack of budget. Other GO stations being built by Metrolinx within the City boundaries are Caledonia (at the...

Here, it looks like they cut a length of the existing rebar out and replaced it with new rebar of similar size, with new sleeves to transfer load between old and new. Presumably they've taken the "coupon" away for destructive tensile strength testing. This would help with estimating the load...

I'm sure you're right, unfortunately. I just think that when we've got 28 lanes (14 each direction) on the combined 401 + 407 that it's time to think about different solutions.