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Second story, per person, 50 square feet of floor area, exclusive of walls, stairs, elevators and enclosed show windows.

Third story, per person, 60 square feet of floor area, exclusive of walls, stairs and elevators.

Fourth story and above, per person, 80 square feet of floor area, exclusive of walls, stairs and elevators, except as hereinafter provided. Grocery departments and restaurants, per person, 40 square feet of floor area, exclusive of walls, stairs and elevators.

(i) The amount of carbon dioxide in the air of any such auditorium, classroom or assembly hall or space frequented by the public in Class VII buildings shall not be permitted to rise above 12 parts of carbon dioxide per 10,000 parts of air, measurements being taken at levels from two and one-half feet to eight feet above the floor, generally distributed; and the temperature in such spaces when artificially heated shall not exceed 70 degres Fahrenheit. The relative humidity shall not be less than 40 degrees nor more than 85 degrees.

(j) The word "auditorium" as used in this section in connection with buildings of Classes IV and V shall be construed as including the main floor, balcony and galleries.

(k) In buildings hereafter erected for or converted to the use of a factory, mill or workshop, the air shall be changed, except as hereinafter provided, so as to provide each person for whom working accommodations are provided therein with at least 1,500 cubic feet of air per hour.

(1) In, buildings used for the purposes of a factory, mill or workshop at the time of the passage of this ordinance, the air shall be changed, except as hereinafter provided, so as to provide each person for whom working accommodations are provided therein with at least 1,200 cubic feet of air per hour.

(m) In any building or room hereafter erected for or converted to the use of a factory, mill or workshop the amount of carbon dioxide in the air, except as hereinafter provided, shall not be permitted to rise above ten parts of carbon dioxide per 10,000 parts of air.

(n) In buildings or rooms used for the purpose of a factory, mill or workshop at the time of the passage of this ordinance, the amount of carbon dioxide in the air, except as hereinafter provided, shall not be permitted to rise above twelve parts of carbon dioxide per 10,000 parts of air. The measurements in each case above enumerated in this paragraph shall be taken at levels from two and one-half feet to eight feet above the floor, distributed generally; and the temperature in such spaces, when artificially heated, shall not exceed 68 degrees Fahrenheit, except as hereinafter provided; the relative humidity shall not be less than 40 degrees nor more than 85 degrees.

(0) The above provisions and standards as to ventilation shall not apply to storage rooms or vaults or any place where the manufacturing processes therein conducted would be materially interfered with, or where manufacturing processes therein conducted would produce considerable quantities of free carbon dioxide, except that the air in such rooms or vaults or in any places of manufacture shall not be permitted to become detrimental to the health of those who enter or work therein. (p) No part of the fresh air supplied in compliance with the requirements of this section shall be taken from any cellar or basement.

(q) No person, firm or corporation, either as owner, proprietor, lessee, manager or superintendent of any factory, mill, workshop or any other building where one or more persons are employed, shall cause, permit or allow the same or any portion or apartment of any room in such factory, mill or workshop, to be overcrowded or to have inadequate, faulty or insufficient light or ventilation.

(r) No person shall be exposed to any direct draft from any air inlet, nor to any draft having a temperature of less than sixty degrees. (s) All poisonous or noxious fumes or gases arising from any process, and all dust of a character injurious to the health of persons employed, which is created in the course of a manufacturing process, within such factory, mill, workshop or laundry, shall be removed, as far as practicable, by either ventilating or exhaust devices.

ARTICLE XXIV

FRONTAGE CONSENTS

711. Definition of word "block".] Whenever a provision is made in this chapter that frontage consents shall be obtained for the erection, construction, alteration, enlargement or maintenance of any building or structure in any block, the word "block, so used, shall not be held to mean a square, but shall be held to embrace only that part of a street bounding the square which lies between the two nearest intersecting streets, one on either side of the point at which such building or structure is to be erected, constructed, altered, enlarged or maintained, unless it shall be otherwise specifically provided.

*712. Frontage consents-gas reservoir-packing house-rendering plant soap factory-tannery-blacksmith shop-foundry-smelter— metal refinery-machine shop-factory, etc.-laundry, etc.-livery stable-boarding stable sale stable medical dispensary-second-hand store or yard-smoke house.] It shall be unlawful for any person, firm or corporation to locate, build, construct or maintain on any lot fronting on any street or alley in the city in any block in which one-half of the buildings on both sides of the street are used exclusively for residence purposes, or within fifty feet of any such street, any building or place used as a gas reservoir, packing house, rendering plant, soap factory, tannery, blacksmith shop, foundry, smelter, metal refinery, machine shop, factory combined with a foundry, laundry to be run by machinery, livery stable, boarding stable, sale stable, medical dispensary, second-hand store or yard, smoke house or place where fish or meats are smoked or cured, without the written consent of a majority of the property owners according to frontage on both sides. of such street or alley. Such written consent shall be obtained and filed with the commissioner of buildings before a permit is issued for the construction or alteration of any building or place for any of the above purposes; provided, that in determining whether one-half of

*As amended November 8, 1915. [This section was previously amended March 11, 1912, May 26, 1913, July 21, 1913, and May 17, 1915.]

the buildings on both sides of the street are used exclusively for residence purposes any building fronting upon another street, and located upon a corner lot, shall not be considered.

71212. Frontage consents-retail store.] It shall be unlawful for any person, firm or corporation to locate, build or construct any store for the sale at retail of goods, wares and merchandise, on any street in any block in which all the buildings are used exclusively for residence purposes, without first securing and filing with the commissioner of buildings the written consent of a majority of the property owners according to frontage on both sides of the street in the block in which the building to be thus used is located; provided, in determining whether all the buildings in the said block are used exclusively for residence purposes, any building fronting upon another street and located upon a corner lot shall not be considered.

713. Reformatories-sheltering institutions.] (a) It shall be unlawful for any person, firm or corporation to build, construct, maintain, conduct or manage any reformatory, rescue or sheltering institution in any block or square in which one-half of the buildings on both sides of the street or streets on which the proposed reformatory, rescue or sheltering institution may front, are used exclusively for residence purposes without the written consent of a majority of the property owners, according to frontage on both sides of the streets bounding such block. Such written consent shall be obtained and filed with the commissioner of buildings before a permit is issued for the construction, alteration, or maintenance of such building, provided, that in determining whether one-half of the buildings on both sides of the street are used exclusively for residence purposes, any building fronting upon another street and located upon a corner lot shall not be considered.

*714. Permit for moving frame buildings-requirements-written consents must be obtained-affidavits made space occupied on lot.]

(a) No person, firm or corporation shall be permitted to move any building which has been damaged to an extent greater than 50 per cent of its value by fire, decay or otherwise; nor shall be permitted to move any frame building of such a character as is prohibited to be constructed within the fire limits from any point outside the fire limits to any point within the fire limits; nor shall be permitted to move any building to a location at which the uses for which such building is designed are prohibited by ordinance. Permits for the moving of frame buildings, other than those the moving of which is herein pro hibited, shall be granted upon the securing and filing the written consent of two-thirds of the property owners according to frontage on both sides of the street in the block in which such building is to be moved. No permit shall be issued to move any building used or designed to be used for purposes for which frontage consents are required until frontage consents in the block to which such building is to be moved have also been secured and filed as required by the ordinances relating to such use.

(b) No building used for residence or tenement house purposes shall be moved from one lot to another or from one location to another

* As amended May 12, 1913, and March 23, 1914.

upon the same lot unless the space to be occupied on such lot shall comply with the provisions of section 440 of this chapter.

(c) No frontage consent shall be required of any person, firm or corporation for removing a building upon his own premises and not going upon the premises of any other person, or upon any street, alley or other public place, in making such removal.

715. Amusements frontage consents required.] It shall be unlawful for any person, firm or corporation to construct or erect any building designed or intended to be used for the purpose of presenting or carrying on therein any entertainment for which a license is required by the ordinances of the city of Chicago without first obtaining the written consent of the property owners as required by the city ordinances.

716. Garages-frontage consents required.] [Repealed by ordinance passed July 17, 1911.]

An ordinance regulating the location of garages. [Passed July 17, 1911; as amended December 7, 1914.]

Be it ordained by the City Council of the City of Chicago:

Section 1. It shall be unlawful for any person, firm or corporation to locate, build, construct or maintain any garage within two hundred feet of any building used as and for a hospital, church or public or parochial school, or the grounds thereof, and it shall be unlawful for any person, firm or corporation to locate, build, construct or maintain any garage in the city on any lot in any block in which two-thirds of the buildings on both sides of the street are used exclusively for residence purposes, or within one hundred feet of any such street in any such block, without securing the written consent of a majority of the property owners, according to frontage on both sides of the street as provided by the ordinances of the city of Chicago; provided, that all lots which abut only on a public alley or court shall be considered as fronting on the street to which such alley or court leads.

Section 2. Any person violating any of the provisions of this ordinance shall be fined not less than five dollars nor more than one hundred dollars for each offense, and his license shall be subject to revocation by the Mayor.

Section 3. That section 716 of The Chicago Code of 1911, adopted March 13, 1911, and all ordinances and parts of ordinances conflicting with this ordinance be and the same are hereby repealed.

Section 4. This ordinance shall take effect from and after its passage and due publication.

717. Storage of shavings, sawdust and excelsior frontage consents -other restrictions.] No person, firm or corporation shall keep, pile, store or accumulate shavings, sawdust or excelsior in any quantity exceeding twenty thousand pounds, in any building, shed, enclosure, yard or open place within the fire limits of the city unless the consent in writing shall first be obtained of the owners of two-thirds of the

frontage on both sides of all streets surrounding the block in which such building, shed, enclosure, yard or open place so used for the keeping of shavings, sawdust, excelsior or similar inflammable material is located; provided, however, that no person, firm or corporation shall keep, pile, store or accumulate loose shavings, excelsior, sawdust, or other similar inflammable materials in any quantity in any building used wholly or in part for residence purposes; provided, further, that such materials in bales may be stored in any quantity not exceeding two thousand pounds in any such building used wholly or in part for residence purposes.

*71712. Frontage consents-business of selling provisions, etc., in residence districts.] It shall be unlawful for any person, firm or corporation to carry on the business of selling meats, poultry, fish, butter, cheese, lard, vegetables or any other provisions from any place of business located in any block in which all the other buildings are used exclusively for residence purposes, without first securing and filing with the city collector of the city of Chicago the written consent of threefourths of the property owners according to frontage on both sides. of the street in the block in which the building to be thus used is located, provided in determining whether all the buildings in said block are used exclusively for residence purposes, any building fronting on another street and located upon a corner shall not be considered.

+71734. Store buildings-plat showing use of all property in block.] No permit shall be issued for the erection or remodeling of any building in any block in which the use of buildings is restricted or regulated by ordinance if such building is designed to be used for conducting therein any business or store, without first requiring the applicant for such permit to file with the commissioner of buildings a plat showing the use to which all the property in such block is devoted.

ARTICLE XXVI

NUISANCE AND PENALTY

719. Nuisance.] (a) Every building or structure constructed or maintained in violation of this chapter, or which is in an unsanitary condition, or in an unsafe or dangerous condition or which in any manner endangers the health or safety of any person or persons, is hereby declared to be a public nuisance.

(b) Every building or part thereof which is in an unsanitary condition by reason of the basement or cellar being damp or wet, or by reason of the floor of such basement or cellar being covered with stagnant water, or by reason of the presence of sewer gas, or by reason of any portion of a building being infected with disease or being unfit for human habitation, or which by reason of any other unsanitary con

A new section, added March 24, 1913; as amended April 14, 1913, May 18, 1914, and June 9, 1914. A new section, added June 2, 1913.

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