The daily morning journal and courier., 1897-12-23

of not less than twelve inches If resting ou wall. Where beams rest on Iron supports, and are properly tied to the same, no greater bearings shall be required than one-third of the depth of the beams. Iron or steel floor beams shall be so arranged as to spacing and length of beams that the load to the Weights Weights of the % materials isA's used Gia in the construction of the said floors. shall not cause detlectlon of the said beams of more than one-thirtieth of an inch per linear foot Of span; and they shall be tied together at in- tervals of not more than eight times the depth of the beam. 4L
 ?. Under the ends Of all Iron or steel beams where they rest on the walls, q stone or east-lron template shall be built Into the walls. Said template shall be eight inches wide in twelve-ineh walls, and in walls of greater thickness said template shall be twelve inches wlde, and such templates, if of stone.
 snail not De in any case less than two and one-half inches in thickness, and no templats shall be less than twelve inches long.
 5. All brick or stone arches placed between iron or, steel floor beams shall be at least four inches thick. and have rise of at least pntz pae gnu quarter inches to each foot of span between the beams. Arches of over five feet span shall be properly increased in thickness, as required by the Inspector of BuiIdings or the space between the beams may be filled in N,d wltn sectional hollow brick of hard-burnt cisy, porous terra eotta, or some equally good hreproof material, having a depth of not less than one and one-quarter inches to each foot of span, variable distance being allowed os
 not over SIX inches in the span between tho
 beams. The said brick arches shall be laid
 to a line on the centers, with close-ioints.
 and the bricks shall be well-wet, and inc joints hiled With cement mortar in proportions ot not more than two of sand to one of cement Dy measure. The arches shall be well grout-
 ed and pinned or chinked with slate. and Keyed: The bottom hanges of all wrought-iron
 CT rolled steel floor beams and all exposed
 portions Of such beams below the abutments or the floor shall be entirely ncased with hard
 burnt clay or porous terra cotta. or with wire metal lath properly secured and plastered on the under side. The exposed sides and bottom plates or hanges of wrought-iron or rolled steel girders supporting iron, steel or wooden floor beams or supporting floor arches or floors. shall be entirely incased in the same manner.
 Sec. 39. All iron or steel lintels shall have bearings proportionate to the weight to be in- posed thereon, but TO lintel used to span any opening more than ten feet in width shall have a bearing less than twtlve inches at each end, if resting on a wall, but if rest ing on an iron post, such llntel shall have 9 bearing of at least six inches at each end by the thickness of the wall to be supported
 II tne posts are to be party posts in front of a party wall, and are to be used for two build- ings, then the said posts shall net be less than sixteen inches on the face by the thickness Of the wall above, and it the party wall be more than sixteen inches thick, then the post shall be the thickness of the wall on the face. Intermediate posts may be used, which shall be sufi1ciently strong, and the lintels thereon shall have sufficient bearings to carry the weight above with safety. When the lintels or girders are supported at the ends by brick walls or piers they shall rest upon cut granite or blue stone blocks at least twelve inches thick, or upon cast-iron plates of equal strength by the full size of the bearings. In case the opening is less than twelve feet, the stone blocks may be six inches in thickness, Or cast-iron plates of equal strength by the full size of the bearings may be used. This requirement shall not apply to the cast-iron lintels used at the back of stone lintels over openings not exceeding six feet in width. In all cases where the girder carries wall and rests on brick piers or walls, the bearings shall be sufficient to support the weight above with safety. No cast-iron lintel or beam shall be less than three-quarters of an inch in thick ness in any of its parts. Iron beams or girders used to span openings more than sixteen feet in width, upon which walls rest or upon which floor beams are carried, shall be of wrought-iron or rolled steel and of sufficient strength, or cast-iron arch girders may be used having rise of not less than one inch to each foot of span between the bearings, with one or more wrought-iron tie-rods of suf- fieient strength to resist the thrusts. well fastened at each end of the girder. All lintels front, rear or side of building, or returned over corner opening, when supported by brick or stone piers or iron columns, shall be of iron or steel and of the full breadth Ul iHe wall BuppUTIGu. III all Du1lQ1QSS n6r6- after erected of altered, where any iron or steel columns are used to support a wall or part thereof, whether the same be an ex- terior or an interior wall, excepting wall fronting on street, and columns located be- low the level of the sidewalk which are used to support exterior walls or arches oyer vaults, the said column or columns shall be either constructed double, that is, an
 ner column alone to be of sufficient strength to sustain safety the weight to be imposed thereon, or such other iron or tine said column or columns shall be either constructed double, that is, all outer and all terior or an exterior wall. excepting 6 wall to support exterior walls of arches over vaults, brick of stone piers or iron columns, shall foot. Even temporary support placed under steel column of sufficient strength and so con- structed as to secure resistance to fire, may be used as may be approved by the Inspector of Buildings. Iron posts in front of party walls shall be filled up solid with masonry and made perfectly tight between the post and walls to prevent effectually the passage of smoke or fire. Cast-iron posts or columns which are to be used for the support of wooden or iron girders or brick walls, not cast with one open side or back, before being set up in place. shall have a three4eighths of an inch hole drilled in the shaft of each post or col- umn by the manufacturer or contractor fur nishing the same, to exhibit the thickness of the castings; and any other similar sized hole or holes which the Inspector of Buildings II quire, shall be drilled in the said posts or columns by the said maiiufacturer or con- tractor at his own expense. Iron posts or columns cast with one or more open sides and backs shall have solid iron plates on top of each to prevent the passage of smoke or fire through them from one story to an- other, excepting where pierced for the pas- sage of pipes. No cast-iron post or column shall be used in any building of a less average thickness of shaft than threelquarters of all inch nor shall it have an unsupported length of more than twenty times it's least lateral dimensions or diameter No wrought-iron or rolled steel column shall have an unsupported length of more than thirty times it's least lateral dimension or diameter, nor shall it's metal be less than one-fourth of an inch in thickness. All cast-iron, wrought-iron and steel columns shall have their bearings faced smooth, and at right angles to the axis of the column; and when one column rests upon another column, they shall be securely bolted together. Where columns are used to support iron or steel girders carrying curtain walls, the said columns shall be of cast-iron, exposed outer and inner surfaces be con- structed to resist fire by having casing of brick work not less than four inches in thickness and bonded into the brick work of the curtain walls, or the inside surfaces of the said columns may be covered with an outer shell of iron having an air space be- tween; and the exposed sides of the iron or steel girder shall also be similarly covered in and tied and bonded. When the thickness of the curtain walls is twelve inches the girders for the support of same shall be placed at the floor line of each story, commencing ! at the line where the thickness of twelve inches starts from, and when the thickness of such walls is sixteen Inches tho girders shall be placed not farther apart than every o+bor ctorv at be floor line COmmenp np m q