All non-fireproof dwelling-houses erected under this section, exceeding 26 feet in width, shall have brick fore-and-aft partition walls. All non-bearing walls of buildings hereinhefore in this section specified, may be 4 inches less in thickness, provided, however, that none are less than 12 inches thick, except as in this Code specified. Eight-inch brick partition walls may be built to support the beams in such building in which the distance between the main or bearing walls is not over 33 feet; if the distance between the main or bearing walls is over 33 feet, the brick partition wall shall be not less than 12 inches thick; provided that no clear span is over 26 feet. No wall shall be built having any one thickness' measuring vertically more than 50 feet. This section shall not be constructed to prevent the use of iron or steel girders, or iron or steel girders and columns, or piers of masonry, for the support of the walls and ceilings over any room which has a clear span of more than 26 feet between walls, in such dwellings as are not constructed fireproof ; nor to prohibit the use of iron or steel girders, or iron or steel girders and columns, in place of brick walls in buildings which are to be used for dwellings when constructed fireproof. If the clear span is to be over 26 feet, then the bearing walls shall be increased 4 inches in thickness for every 12% feet or part thereof that said span is over 26 feet; or shall have, instead of the increased thickness, such piers or buttresses as, in the judgment of the Commissioner of Buildings having jurisdiction, may be necessary.
Whenever two or more dwelling-houses shall be constructed not over 12 feet 6 inches in width, and not over 50 feet in height, the alternating center wall between any two such houses shall be of brick not less than 8 inches thick above the foundation wall; and the ends of the floor beams shall be separated that 4 inches of brickwork will be between the beams where they rest on the said center wall. Sec. 32. Walls for Warehouses. The expression "sculls for warehouses" shall be taken to mean and include in this class walls for the following buildings: Warehouses, stores, factories, mills, printing houses, pumping stations, refrigerating houses, slaughter houses, wheelwright shops, cooperage shops, breweries, light and power houses, sugar refineries, office buildings, stables, markets, railroad buildings, jails, police stations, courthouses, observatories, foundries, machine shops, public assembly buildings, armories, churches, theaters, libraries, museums.
The walls of all warehouses 25 feet or less in width between walls or bearings shall be not less than 12 incises thick to the height of 40 feet above the foundation walls. If over 40 feet in height, and not over 60 feet in height, the walls shall be not less than 16 inches thick above the foundation walls to the height of 40 feet, or to the nearest tier of beams to that height; and thence not less than 12 inches thick to the top. If over 60
feet in height. and not over 75 feet in height, the walls shall be not less than 20 inches thick above the foundation walls to the height of 25 feet, or to the nearest tier of beams to that height; and thence not less than 16 inches thick to the top. If over 75 feet in height, and not over 100 feet in height, the walls shall be not less than 24 inches thick above the foundation walls to the height of 40 feet, or to the nearest tier of beams to that height; thence not less than 20 inches thick to the height of 75 feet, or to the nearest tier of beams to that height; and thence not less than 16 inches thick to the top. If over 100 feet in height, and not over 125 feet in height, the walls shall be not less than 20 inches thick above the foundation walls to the height of 40 feet, or to the nearest tier of beams to that height; thence not less than 24 inches thick to the height of 75 feet, or to the nearest tier of beams to that height; thence not less than 20 inches thick to the height of 110 feet, or to the nearest tier of beams to that height and thence not less than 16 inches thick to the top. If over 125 feet iu height, and not over 150 feet, the walls shall be not less than 32 inches thick above the foundation walls to the height of 30 feet, or to the nearest tier of beams to that height; thence not less than 28 inches thick to the height of 65 feet, or to the nearest tier of beams to that height; thence not less than 24 inches thick to the height of 100 feet, or to the nearest tier of beams to that height; thence not less than 20 inches thick to tine height of 135 feet, or to the nearest tier of beams to that height; and thence not less than 16 inches thick to the top. If over 150 feet in height, each additional 25 feet in height, or part thereof, next above the foundation walls, shall be increased 4 inches in thickness, the upper 150 feet of wall remaining the some as specified for a wall of that height.
If there is to be a clear span of over 25 feet between the bearing walls, such walls shall be 4 inches more in thickness than in this section specified, for every feet, or fraction thereof, that said walls are more than 25 feet apart; or shall have, instead of the increased thickness, such piers or buttresses as, in the judgment of the Commissioner of Buildings, may be necessary.
The walls of buildings of a public character shall be not less than in this Code specified for warehouses, with such piers or buttresses, or supplemental columns of iron or steel, as, in the judgment of the CommissimAr of Buildings having jurisdiction, may be necessary to make a safe and substantial building.