(1) The projection room shall be of the following minimum dimensions :- Projection wall 12 ft.
Side walls 10 ft.
Height 8 ft.
(2) The construction shall be of fire resisting materials, stone slabs shall not be used for roof or floor and the door shall be of steel and of self-closing type.
(3) Projection and observation posts shall be maximum 8 inches square, glazed with plate glass and shall have automatic closing metal shutters with master control.
1(4) Extra fans for ventilation shall be provided and fume chimneys over projectors shall be used. Two liquid chemical extinguishers one fire extinguisher using carbon tetrachloride acid, one bucket of sand two buckets of water and a damp blanket shall be kept inside the room. A large sponge shall be kept in one of the buckets of water one liquid chemical extinguisher shall also be kept immediately outside the room.]