These rules vary between the nfl and mlb as well as from stadium to stadium.
Retractable roofs nfl.
Finally the rams will no longer have to.
The 1 450 ton 75 000 foot long cable net system was completed in october 2019.
In general if a game begins with the roof open and weather conditions become less favorable the home team may with the approval of the field officials and visiting team request the roof be closed.
The roof is supported by a double cable net system which is the largest cable net system in the world.
Gameplay with retractable roofs.
For retractable roofs the home team determines if the roof is to be opened or closed 90 minutes before kickoff.
The operation of retractable roofs are subject to the ground rules set by the nfl.
In north american major sports leagues specific rules exist governing the movement of retractable roofs before and during gameplay.
The roof remains open unless precipitation or lightning is within the vicinity of the stadium the temperature drops below 40 f 4 c or wind gusts are greater than 40 miles per hour 64 km h in which case the roof operators will close the roof.
In less than two weeks if the nfl moves forward as planned sofi stadium will open in inglewood after more than five years of design and construction.
These procedures are covered in the league s policy manuals not in the rulebook pregame procedureup to 90.
Venue and the raiders las vegas digs will have some.
Seems like the closed or retractable roofs are all the rage now.