Arizona republican., 1916-02-17

Four .2i 20 20 16 T.
 Five ..24 24 20 20 16 F
 Six .2S A A 20 20 Is F
 Seven 2S 2S 24 A 20 20 16 F
 Eight ..32 aS 2S "A 24 20 20 16 F Nine ..32 32 2S .2S 24 24 20 20 16 F
 Provided, however, in any building used wholly as a dwelling. flats or apartments and detached from any other building, if ore story in height, basement and first story walls may he eight inches thick, or if two stories in height, easement and first story walls may be twelve inches thick, pro- Vided, however that such buildings shall not be changed to serve for other purposes than dwelling, unless the walls are increased to the thickness set forth in the foregoing schedule And provided. further that the height Of a brick wall in any story shall not exceed sixteen times it's least thick ness. nor shall the length of any such wall exceed one hundred times it's least thickness unless reinforced with intersectIng walls. or pilasters.
 Sect. II Concrete bearing walls. Walls of plain concrete may be built of thickness four inches less than required for masonry walls. and the height of such walls shall not be more than twenty -four times the thick ness thereof. Walls of reinforced con- crete shall be specially designed to meet the requirements of their use Provided, however. that in no case shall any wall be of less thickness than the wall above.
 Sect. F. Hollow tile construction. Hollow tile may be used for bearing walls in buildings or structures not exceeding three stories in height or for enclosure walls of skeleton con- structed buildings or structures of any height where such walls are carried on beams at each story. except party walls. which shall be built solid Thickness of wall must conform to the following schedule:
 First Second. Third. One story ......6 in.
 Two stories ....S in 6 in.
 Three stories ..12 in 10 in. 6 in.
 Where tile work is exposed to the weather, the outside shall be plas tered or some approved means taken to waterproof it. Where a girder or beam shall rest upon a wall 50 that there be a concentrated load of two tons or over, some means shall be taken of supporting the ends of such beams or girders either by filling the tile soldlv with concrete. or by the use of bearing iron plates.
 No tile shall be loaded in excess of 90 pounds per square inch of net sec tion in compression, if set on end, or seventy five pounds if set on sides unless a special permit therefor be issued by the City Inspector of Build ings for some specified method of con- struction.
 All hollow tile for exterior walls or bearing partitions, shall be laid in ce ment mortar. A bond composed of metal lath or wire mesh shall be placed the full thickness of the wall every fourth course, such metal lath or wire mesh shall be not coarser than one half inch and of galvanized wire.
 Where there is concentrated load, solid construction shall be used to take care of the load at that point.
 Sec. 13. Existing party walls. Walls heretofore built for and now used as party walls. the thickness whereof at the time of their erection was in accordance with the then ex- sting ordinance, but which are not in accordance with the requirements of this ordinance, may be so continued and used as such party walls if in good condition for the ordinary uses of party walls, provided the height of same he not increased or such wall be not otherwise so changed or used as to endanger life. limb or property
 Sec. IA. Fire Walls. All eX- terior, division and party walls of ma sorry in buildings or other structures of classes "A.' 'B' and "C' except as hereinafter provided, shall extend through and be at least two feet above the adjoining roof line. and shall be at least eight inches thick. Such fire walls shall be continuous without openings therein, except as otherwise provided in this ordinance, and if brick or stone. shall be laid in mortar containing not less than one part of cement to three parts of good lime nor tar. such cement mortar to extend from the top of the wall to a point