The daily morning journal and courier., 1897-12-24

pear Salely tue Wel8nL OI lHe pOrllOu ol eacl and every floor, roof, and any other part of the structure depending upon it for support, ill addition to the weights required as be- fore stated to be supported on the floors and roofs, together with any other loads that will come upon said column, post or vertical support.
 sec. 34. The strength Of all columns and posts shall be computed according to Gordon S formulae, and the crushing weights in pounds to the square inch of section, used as co-ef- fcients in said formulae, shall not exceed the following for materials named, namely:
 Pounds. Cast iron ...--..............,.... 00q Rolled steel .............,....... AS, ,00O Wrought or rolled iron n.................. 4O,o oOO American oak .......................... 4,500 Pitch or Georgia yellow pine........ 5000 Whlte plne S'UoO 'oO
 Sec. s5. The breaking strength of wooden beams and girders shall be computed accord | ing to the formulae in which the constants for transverse strains for central loads shall l be as follows, namely:
 Pounds. Hemlock ......................... 2l2 l spruce zSO Whlte plne A4o Pitch or Georgia yellow pine. ......... 400 | American oak ....,.......,............. 50O
 The wooden beams and girders carrying a uniformly distributed loads the constants will | be doubled
 Sec. 36. The factors of safety shall be as l one lu luuT TUT LII ptdLuS, BlrueIS anu UtueT pieces subject to g transverse strain; as one to four for all posts, columns, or other vertical supports when of wrought iron or rolled steel, and as one to six for cast iron posts, columns or other vertical supports; as one to five for other materials subject to q con- pression strain, and as one to six for tie-rods, tie-heams, and other pieces subject to tensile strain.
 Sec. 37 Good, solid. natural earth shall be deemed to safely sustain load of four tons II. s,I Ntorxrr INfn mined by the Inspector of Buildings, and the | width of the footing courses shall be at least sufficient to meet this requirement.. In con- putting the weight of walls, & cubic foot of brick work shall be deemed to weigh one hum dred and fifteen pounds. Sandstone white marble, granite and other kinds of building stone shall be deemed to weigh one hundred and sixty pounds per cubic foot. The safe bearing load to apply to good brick work shall be taken at eight tons per superficial | foot, when good lime mortar is used; eleven and one-half tons per superficial foot when good lime and cement mortar is used. The safe bearing load to apply to good concrete shall be taken at eleven tons per superficial foot. Every temporary support placed under any structure, wall, grder or beam, during ! the erction, finishing, alteration or repairing of any building or structure, or any part thereof, shall be of sufficient strength to safe- | ly carry the load to be placed thereon. In all warehouses, storehouses factories workshops, stores, and other buildings where heavy ma 1 terials are kept or stored, or machinery in- troduced, the weight that each floor will safely sustain upon each superficial foot there of shall be estimated by the owner or oc- cupant or by competent person employed by | the owner or occupant. Before any building | hereafter ercted is occupied and used, in whole or in part, for any of the purposes aforesaid and before any building erected prior to the passage of this act, but not at such time oc- | cuped for any of the aforesaid purposes, is occupied or used in whole or in part, for any of oil D1rn weight HNor will safely sustain upon each superficial foot | thereof shall be ascertained and posted in a conspicuous place on each story of the build ing to which it relates The weight placed | on any of the floors of any building shall be safely distributed thereon, and the In spector of Buildings may require the owner or occupant of any building, or of any DOT tion thereof, to redistribute the load on any | floor or to tighten such load, as he may direct, where he may deem the same to be necessary for the protection of life and prop l erty. No person shall place or cause or per- 1 init to be placed on any floor of any building any greater load than the safe load thereof, as correctly estimated and ascertained as here | in provided. If the Inspector of Buildings shall have cause to doubt the correctness | of said estimate he is empowered to revise | and correct the same and for the purpose of such revision the officers and employees of said | department of buildings may enter any build | ing and remove so much of any floor or other | portion thereof as may be required to make l necessary measurements and eXaHllndtlOHS, | and any expense necessarily incurred in re- moving any floor Or other portion of any build l ing for the purpose of making any examina- ton herein provided for shall be paid by the City Treasurer upon the requisiton of the | Inspector of Buildings Such expenses sail be a charge against the person or persons by whom or on whose behalf said estimate was made and shall be collected in an action to be brought in the name of said department of buildings or fire department, as the case may be, against said person or persons, and the sum so collected shall be paid over to the said City Treasurer to be deposited in | said fund in reimbursement of the amount paid as aforesaid.
 | to be used as noted OF schoolhouse the height of which exceeds sixty feet, and every building hereafter erected or altered to be used as a hospital, asylum, or institution for the treatment of persons, the height of which exceeds forty-five feet and every other build ing, the height of which exceeds seventy-five l feet, except grain elevators and buildings for which specifications and plans have been here tofore submitted to and approved by the proper authorities, shall be built Qre-proof, that is to say, they shall be constructed with walls of brick, stone, iron or other hard, incombustible | material in which wooden beams or lintels shall not be placed. and in which the floors and roofs shall be of materials similar to the | walls The stairs and staircase landings shall be built entirely of brick, stone, iron or other | hard ineombustible materials. No wood | work or other lnnammaDle material snell pc used in any of the partitions, furrings, or ceilings in any such ire-proof buildings, ex- ceptng, however, that the doors and windows and their frames, the trims, the castings, the interior finish when filled solid at the back with e-proof material, and the floor boards and sleepers directly hereunder, may be of wood In all fire-proof buildings the follow ing rules shall be observed:
 l. All cast-iron, wrought-iron, or rolled steel columns shall be made true and smooth at both ends and shall rest on iron or steel bed plates, and have iron or steel cap plates. which shall also be made true. All iron or steel trimmer beams, headers and tail beams shall be suitably framed and connected to- gether, and the iron girders. columns beams, trusses and all other iron work of all floors and roofs shall be strapped, bolted, anchored and connected together and to the walls, | in strong and substantial manner. All con nections of rolled beams with each other and | with girders shall be in conformity with the practice of the Carnegie, Trenton, Phoenix. | Peneoyd or other frst-class rolling mills, as published in their standard books and sheets. and approved by the Inspector of Buildings l All wrougth-iron or rolled steel beams eight inches deep and under shall have bearings 1 equal to their depth, if resting on a wall ! and twalyo heo Skon