Before the DP's get submitted and the proposed official heights are out there we get this nugget from NORR's website:
Quote:
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At the top, guests and residents access Canada’s highest food court, a restaurant, a private club and a public observatory. Critical for a near supertall design in Calgary’s climate, the building integrates strategies such as louvered mechanical floors to reduce wind pressure and mitigate sway, contributing to a resilient, future-facing addition to the city skyline.
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https://norr.com/project/stampede-st...el-residences/
Sounds like the 69 storey tower will be pushing close to that 300m supertall height.