The isolation curb shall consist of an upper support rail with supply and return duct supports on which the equipment and duct openings rest and a lower support curb which is attached to the roof structure, separated by free-standing, unhoused, laterally stable steel springs.
Happy Saturday! River City is a military term for a command's communications being down. Meaning Skype, email, internet access and phone calls. This can happen for many different reasons. Usually its because something is happening that the command does not want anyone outside of the command to know about.
Elk River is a city in Sherburne County, Minnesota, United States, about 34 miles northwest of Minneapolis. It is situated at the confluence of the Mississippi and Elk Rivers. The population was 22,974 at the 2010 census. It is the county seat. The city's population exceeded 20,000 as of 2005.