Excitement in Flames’ rebuild growing as new arena reaches milestone

CALGARY — On time and on budget, the billion-dollar building that represents so much of the hope and excitement surrounding the Calgary Flames organization will play host to a stirring milestone on Monday. That’s the day the final beam goes into the roof of Scotia Place, officially making it roof tight — a phrase that means little to the average fan, but everything to the 900-plus workers who’ve been living inside that steel skeleton for the better part of two years. To celebrate the moment, the crew from CANA, who are constructing Calgary’s long-awaited arena, will gather in the 44,000-square-foot…