16. The principal doors from which exit is had, and all doors at the lower part of a staircase, shall open outwards and be kept free throughout meetings, classes, performances or religious services. In the case of hotels and boarding-houses, boarding-schools, and other buildings occupied at night, the doors shall never be locked with a key, but shall be supplied with a lock which opens automatically by pressure from within the building, and in the case of churches, theatres, amusement halls and places of public meeting, shall be closed by means of weights or springs and not by latches.
R. S. 1964, c. 149, s. 16.