The devices on ceilings that spray water when a fire starts are called sprinklers.
Maximum drop of the deflector when the concealed sprinkler cover or what they call escutcheons is released, should be at least 1/4" of an inch from the horizontal height of the ceiling to spray the water during sprinkler operation in case of Fire.
No.
no. If you spray it in fire you will burn someone
For ever
The car needs three things, fuel, air, and electrical spark. If it cranks but doesn't start its not getting fuel. Spray some starter fluid into air intake after detaching it from engine. If starts for couple of seconds that is problem. If not check these things, spark plugs fire, and relays near battery.
The base, where it is being generated
Fire sprinklers are rated by gpm per square foot, plus the temperature at which they are triggered, plus the diameter of the spray (angle of the cone), among other things.
foam fire extinguisher or a fire retardant spray
There are a lot of angles on this question. From a fire science prospective the fire starts out slow and grows if there is enough air and things to burn. The fire continues to grow and give off heat. The heat gathers at the ceiling level and spreads and soon the entire room will burst into flame because of the heat. The fire then spreads to other parts of the house. IF there is not enough air, the fire will die down before it gets very big but the temperature in the room remains high. When air is allowed in, the fire suddenly erupts in a flash explosion.
Very unlikely. Refer to your Insurance Policy schedule of covered perils. You will see things like, Fire. Wind, Hail, lightning. If one of the covered perils in your policy was the direct cause of your "ceiling sag" then it would be covered. If your ceiling is just old and sagging then No. That's an owners maintenance responsibility.
Yes of you spray clorine on it
get a fire extinguisher ASAP and spray EVERYWHERE in microwave till your positive its out