Tag Archives: city of toronto

20160904. Nail-polish scented steam escapes as a PVC liner is cured within a watermain requiring rehabilitation.

20160904. Nail-polish scented steam escapes as a PVC liner is cu

A PVC liner is inserted into a watermain between two manholes. Hot steam is then used to expand the liner to the width of pipe. The thermosetting resin in the liner is then cured by the steam and hardens. After cooling, the liner is now waterproof. This trenchless technology is used to stop leaks from imperfections or gaps in piping.

20160622. An aerial view of Toronto Union Station’s historic exposed train shed steel structure.

20160622. An aerial view of Toronto Union Station's historic expProgress on the train shed has stalled as the future electrification of Go Transit trains will require either modifying the overhead wiring system to fit under the shed, lowering the floor or raising the roof with the latter being the worst case scenario as it involves considerable cost and harming the historic steel structure.