Standard or specification

TS 3.80, Construction Specification for Concrete Unit Pavers

City of Toronto

September 2025 edition. A cold-climate Canadian city specification used as a cross-check. Read by the research.

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Timber is not accepted as an edge restraint.
Screenings and stone dust are prohibited as bedding, and the bed is not compacted before laying.
At least four passes while sweeping sand into the joints.
The finished surface ends 3 to 10 mm above drain inlets and collars.
Cold-climate Canadian specification used to cross-check bedding, compaction and finishing requirements.
In wheel paths, a cut piece is at least one third of a unit.
Toronto bans stone dust and screenings as bedding.
Toronto publishes the gradation of a 19 mm clear stone with almost no fines.