All places of detention where persons are confined by locked doors or barred windows, shall be of fireproof construction. Hospitals of three or more stories shall be of fireproof construc tion. Order 5703. Ordinary Construction. All three story buildings of this classification shall be of fireproof, mill, or ordinary construction, except that a three story apartment house which accommodates only one family on each floor may be of frame construction if not within the fire limits of any municipality. Order 5704. First Floor Fireproof. In three story buildings, the first and all members supporting the same shall be of fireproof construction; except that in a three story building which accommodates not more than four families or 30 persons above the first story, the basement ceiling shall be either fireproof or semi-fireproof (order 5113); in such cases the spaces between floor joists, below or above stud partitions, shall be fire-stopped with incombustible material extending the full height of the joists and the full thickness of the partition. Order 5705. First Floor Used for Business Purposes. In all buildings whose first story is used for a garage, the first story ceiling shall be of fireproof construction. In a building more than two stories high whose first story is used for business purposes, the ceiling shall be either fire-proof or semifireproof (order 5113). Order 5706. Room Containing Inflammable Material. Every room or apartment which is used for a carpenter or paint shop, or other equally inflammable material, shall be enclosed with fireproof ceiling and floor and with incombustible walls at least 8 inches thick (or 5 inches thick if of reinforced concrete) with all openings protected by standard fire doors. Order 5707. Corridor and Div.ding Partitions. In every building which is more than two stories high and which has more than one apartment of eight rooms on any floor, the public passageways shall be enclosed with fireproof or semi-fireproof partitions (orders 5109, 5112); if there is more than one apartment on any floor, such apartments shall be separated by such partitions; if there are more than eight rooms on any floor, they shall be divided by such part!tions into groups of not more than eight rooms each. SECTION 3. YARDS. Order 5708. Behind every apartment house, the rear of which does not abut on an alley or street, there shall be a yard across the entire width of the lot, open and unobstructed from the ground to the sky. The width of the yard behind a two story building shall be either (1) At least 5 feet of unobstructed width; or (2) At least 10 feet from the rear lot line to the building line, of which at least 3 feet shall be unobstructed, and the remainder may be occupied by an open (or screened) porch. For apartment houses of more than two stories, the unobstructed width of the entire yard shall be increased one foot for each additional story, except in the case of corner lots. No apartment house shall be placed behind any other building. Every apartment house shall abut on a street and the front wall shall be at least 25 feet from the center of the street. COURTS AND SHAFTS. SECTION 4. Order 5709. All courts and shafts for light, air, or dumbwaiter, shall be completely enclosed with fireproof or semi-fireproof partitions or walls (orders 5109, 5112) except as provided below. In the case of semi-fireproof partition enclosing a court or shaft in a building of not more than three stories, the fire-resisting material will only be required on the side of the partition toward the court or shaft. In a fireproof building, an open well piercing the second mezzanine) floor only, will be permitted. The mezzanine floor will be considered as a full story. Walls of outer courts, and lot line courts shall be constructed the same as required for outside walls. For elevator shafts see elevator code. For minimum size, etc., of courts and shafts see orders 52035206, inclusive. Order 5710-Number, Location, Type. There shall be at least two exits accessible from each room or apartment, and such exits shall be at least 30 feet apart, measuring along the shortest line but not piercing any fireproof partition or wall. The number and location of exits shall be such that in case any exit or passageway is blocked at any point, some other exit will still be accessible, through public passageways, from every room or apartment; also that the entrance to each room or apartment will be not more than 50 feet distance from an exit (measuring along public passageways) if in a non-fireproof building or 75 feet in a fireproof building. Exception. In a fireproof building, or in a two-story nonfireproof building, not more than four double rooms, or any arrangement of rooms not exceeding 800 square feet in area, may be placed between an exit and the end of the corridor. At least one-half of the required exits, in buildings of more than one story, shall be stairways (orders 5117-5119). The remaining exits shall be either stairways, or horizontal exits (order 5120); or fire escapes may be used as exits from floors which are not more than 40 feet above grade. Every building which accommodates more than one family or eight persons above the second story shall have at least two stairways. Fire escapes for hospitals and asylums shall be "B" fire escapes. Order 5711. Stairways. In three-story buildings, all stairways shall be enclosed as in order 5115 or 5116, unless the building is either fireproof or sprinklered; except that the doors may be omitted in one stairway enclosure. In three-story buildings accommodating more than two families or 15 persons above the first story, all basement stairways shall be enclosed with fireproof enclosures. In buildings of more than three stories, all stairways shall be so enclosed, except that in fireproof buildings one stairway may be unenclosed from the first to the third (or second) floor, provided such stairway is enclosed in the third (or second) story and does not lead to the basement. In all buildings of more than two stories, in which the first story is used for business purposes, at least one stairway shall be enclosed in the first story with an unpierced fireproof enclosure (order 5109) and such stairway shall not connect with the basement. In apartment houses, outside stairways may be counted as exits if covered by a roof. If more than one family is accommodated above the second story, the stringers and other supporting members of outside stairs and platforms shall be of incombustible material; the treads and flooring, if of wood, shall be at least 1% inches thick. If more than two families are accommodated above the second story, the adjoining doors and windows shall be protected as in order 5121. Order 5712. Aggregate Width. The aggregate width of exits shall be as provided in order 5404. Order 5713. Exit Doors. Exit doors shall be as specified in order 5132; except that a door which is used by not more than six families or 40 persons, shall be not less than 3 feet wide and shall not be required to open outward. Order 5714. Passageways. Every public passageway leading from an exit shall be at least as wide as the required width of such exit. Every public passageway leading to an exit shall be at least 3 feet wide. The required width shall be kept clear and unobstructed at all times. Order 5715. In every building which accommodates more than 4 families or 30 persons, and in every building which accommodates transients, the public passageways and sta'rways and exit doors shall be illuminated from one hour after sunset to one hour before sunrise. This illumination shall include lights at all intersections of passageways, at all exits, and at the head and foot of every stairway. The lights at emergency exit doors shall be red lights and shall be accompanied by a sign bearing the words "exit" or "out," in plain letters. SECTION 7. SCUTTLE. Order 5716. Every building more than one story in height which accommodates more than 4 families or 30 persons shall have a permanent means of access to the roof from the inside. The opening shall be not less than 20 x 30 inches and there shall be a permanent ladder or stairway leading thereto. Order 5717. Size of Rooms. Every sleeping room shall be of sufficient size to afford at least 400 cubic feet of air space for each occupant over twelve years of age, and 200 cubic feet for each Occupant under twelve years. No greater number of occupants than the number thus established, shall be permitted in any such room. Order 5718. Basement Rooms. Every basement, living or sleeping room shall be at least 8 feet high from floor to ceiling. The ceiling shall be at least 4 feet above the outside grade. The walls and floor shall be dampproof and waterproof. No rooms wherein persons are forcibly confined shall be located in a basement. Order 5719. Windows. The outside windows in every sleeping or living room shall have a total area of at least one-tenth of the floor area of the room, but not less than 12 square feet. The top of at least one such window shall be not less than 6% feet above the floor, and the upper half of it shall be made so as to open the full width. SECTION 9. BOILER AND FURNACE ROOMS. Order 5720. All boiler and furnace rooms, including breaching, and all laundries and drying rooms, in all buildings accommodat ing transients and in hospitals, asylums and other places of detention, shall be enclosed with standard fireproof enclosures and fireproof floor and ceiling. VENTILATION. SECTION 10. Order 5721. Pure air shall be provided at the rate of 1,800 cubic feet per hour per person; provided the air in every public part of the building shall be changed at least twice each hour. SECTION 11. TOILET ROOMS. Order 5722. Every apartment shall have a water-closet in a bathroom or separate compartment; except that where there are apartments consisting of but one or two rooms there shall be at least one water-closet for every two such apartments. All other buildings of this classification shall have at least one water-closet for every 15 rooms or fraction thereof. See also orders 5250-5265, inclusive, and 5723. SECTION 12. WATER SUPPLY. Order 5723. In every building of this classification where city water supply is available or can be made available, there shall be at least one proper sink or washbowl with running water. In apartment houses there shall be such a sink or washbowl in each apartment. SECTION 13. REPAIRS. Order 5724. Every building of this classification, and all the parts thereof, shall be kept in good repair and the roof shall be kept so as not to leak and all rain water shall be so drained and conveyed therefrom as not to cause dampness in the walls or ceilings. Order 5725. Every building shall be kept clean and shall also be kept free from any accumulation of dirt, filth, rubbish, garoage, or other matter in or on the same or in the yards, courts, passages, areas or alleys connected with or belonging to the same. SECTION 15. Order 5726. STANDPIPES AND FIRE EXTINGUISHERS. Standard interior standpipes (order 5134) shall be provided in every building which is more than two stories high and accommodates 20 or more transients, and in all hospitals, asylums and other places of detention. Not more than 75 feet of hose (order 5134) shall be attached to each standpipe at each floor level. The number and location of interior standpipes shall be such that the hose will reach at least two feet inside of each room. In the above buildings where adequate water supply is not available, and in buildings accommodating less than 20 transients where interior standpipes are not provided, a standard fire extinguisher (order 5135) shall be placed on each floor at the head of each stairway and at each elevator or group of elevators. SECTION 16. FIRE ALARM. Order 5727. In every building which accommodates 20 or more transients, there shall be a proper alarm or gongs which can be operated from any story and can be heard throughout the building. Every such alarm system shall be tested at least once every week. SECTION 17. DIRECTIONS FOR ESCAPE. Order 5728. In every room liable to be used by transients a notice shall be conspicuously posted giving complete and plain directions for reaching at least two exits. GENERAL ORDERS ON EXISTING BUILDINGS PART I DEFINITIONS AND GENERAL REQUIREMENTS SECTION 1. BUILDINGS AFFECTED BY THESE ORDERS. Order 6000. These orders shall apply to all buildings except (1) Buildings covered by the state building code, which includes orders 5,000 to 5,999 of the Industrial Commission. (2) Private residences, and outbuildings in connection therewith, such as barns, garages, etc. (3) Flat buildings used as the residence of two families only, provided not more than two persons are accommodated who are not members of the family. (4) Buildings used for agricultural purposes which are not within the corporate limits of a city or village. (5) Temporary buildings or sheds used for construction purposes only. LOCAL REGULATIONS. SECTION 2. Order 6001. These orders shall not be understood to limit the power of cities villages and towns to make or enforce additional or more stringent regulations, provided the same do not conflict with these orders, or with any other order of the Industrial commission. SECTION 3. FIREPROOF CONSTRUCTION. Order 6002. A building is of fireproof construction if all the walls, partitions, piers, columns, floors, ceilings, roof and stairs are built of incombustible material; and if all metallic structural members are protected by an incombustible fire resisting covering of low heat conductivity. The trimmings and finished floor may be of wood. Partitions entirely contained within a private apartment may be non-fireproof provided the partitions enclosing such apartment are fireproof. The roof may be of wood, provided an incombustible roof covering is used and provided the ceiling of the uppermost story is of fireproof construction not suspended from the roof. SECTION 4. MILL CONSTRUCTION. Order 6003. A building is of mill construction if all walls are built of incombustible material; all wood girders and joists are at least 51⁄2 inches thick; wood columns and posts are at least 71⁄2 x 71⁄2 inches; floors are at least 3 inches thick; the roof has |