I live in Montana as a Civil Engineer so we have winter and “construction season”. There’s lots of allowances in our specifications for certain temps, cold weather protection for concrete, etc. but there’s also hard cut offs. For example we can’t put down any paint on our runways unless the ambient temperature is 40 degrees and rising. Asphalt needs to be put down above a certain temperature and when you get later into the year it becomes somewhat more difficult to maintain temperature in the asphalt. Usually we go till about October then we’re done until around April.
But for instance if we get the foundations and stem walls poured in before the ground freezes, we can do the framing and such when it gets colder. Basically OP the schedule is just adjusted to account for the weather, we get as much done as we can within the window we think we’ll have, and stuff that can be done that isn’t weather dependent (in my case a lot of the electrical for airports) gets pushed back. I’ve been inspecting electrical work in 2 feet of snow, it was fun in a “this sucks” kind of way, fell in a lot of holes that were buried.
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