Section 50. Entrance halls

Section 50-A. Entrances: doors, locks and intercommunication systems

Section 50-C. Rights of tenants to operate and maintain a lobby attendant service

Section 51. Shafts, elevators and dumbwaiters

Section 51-A. Peepholes

Section 51-B. Mirrors in connection with self-service elevators

Section 51-C. Rights of tenants to install and maintain locks in certain entrance doors

Section 52. Stairs

Section 53. Fire-escapes

Section 54. Cellar entrance

Section 55. Wainscoting

Section 56. Frame buildings and extensions

Section 57. Bells; mail receptacles

Section 58. Incombustible materials

Section 59. Bakeries and fat boiling

Section 60. Motor vehicle storage

Section 61. Business uses

Section 62. Parapets, guard railings and wires

Section 63. Sub-curb uses

Section 64. Lighting; gas meters; gas and oil appliances

Section 65. Boiler rooms

Section 66. Lodging houses

Section 67. Hotels and certain other class A and class B dwellings

Section 68. Smoke detecting devices