Is there an origin to the dawn crane pick tradition on new installs, or is it just crew coordination and traffic permits? On our last job we scheduled three 7:00 AM picks to hit a 10-day rough-in window, and I’m wondering if there’s an old-school reason behind the early starts beyond wind and city noise rules.
Mostly it’s physics and permits — surface winds are usually lowest near sunrise, so crews aim to “beat the wind and beat the traffic.” If you want to push later, buy a full street closure and have the crane commit to a 10–12 window tied to an NWS hourly wind forecast, but plan for OT on rigging. What gust limit did your operator set?
On a lot of our rooftop sets, the dawn pick isn’t just wind — once the sun hits, TPO/EPDM gets soft and by 10:00 the skates and cribbing start to sink, which drives me nuts. If you lay 3/4-in plywood/rigging mats and keep a walkway of ISO protection, you can usually slide those 7:00 picks to 9–10 without trashing the roof, assuming your lane closure still holds. @luke6845 did your window come from DOT or the building’s “no noise after 8” rule?
I still book first light to dodge summer pop-up storms — once lightning’s inside 10 miles, you’re on standby and the day’s sunk. Tip from my side: check SPC/HRRR the night before and grab the earliest slot if the afternoon looks convective; @mike_brown92 are your crane guys tightening those lightning holds too?
And a lot of the dawn habit is DOT windows — lane/sidewalk closures are allowed before the AM peak, so a 7 a.m. start fits the permit and the crane’s 4‑hr minimum without getting caught in a rush-hour blackout. If you need to push later, ask for a curb-only occupancy or a weekend waiver and pre-stage the unit on rollers the night before; , the extra permit line items, but it works. Which city were those 7 a.m. lifts in?