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

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. 3i The strength of all columns and posts shall be computed according to Gordons formulae, and the crushing weights in pounds to the square inch of section, used co-ef- fcients in said formulae, shall not exceed the following for materials named, namely
 Pounds. Cast iron .s-....-.".........-... SC, GOO ttolleu steei foVVo Wrought or rolled iron standardization. 40,000 Pitch of Georgia yellow pine ........ 5000 Whlte pine .............'............ S,VUo
 Sec. 35 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 be as follows, namely:
 Pounds. spruce Soo White pine ........................... z9U pltcr or Georgia yellow pine. ........ 5,o0b American oak .......,.....,.,...... 300
 The wooden beams and grders carrying a uniformly distributed loads the constants will be doubled.
 Sec. 36. The factors of safety shall be as one to four for all beams, girders and other pieces subject to a 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 a con- pression strain, and as one to six for tie-rods, tie beams, and other pieces subject to a tensile strain
 Sec. 37. Good, solid natural earth shall be deemed to safely sustain load of four tons to the superficial foot, or as otherwise deter mined by the Inspector of Buildings, and the width of the footing courses shall be at least sufficient to meet this requirement. In com putting the weight of walls, cubic foot of brick work shall be deemed to weigh one hun 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 De 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-bearng load to apply to good concrete shall be taken at eleven tons per superficial foot. Every temporary support placed under any structure, wall, girder or beam, during the erection, 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 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- cupied for any of the aforesaid purposes, is occupied or used, in whole or in part, for any of said purposes, the weight that each floor will safely sustain upon each superficial foot thereof shall be ascertained and posted in conspicuous place on each story of the build ing to which 1t relates. The weight placed on any of the floors of any building shall be safely distributed thereon, and the h. 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 erty. No person shall place or cause or per 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 necessary measurements and examinations, and any expense necessarily incurred in re- moving any floor or other portion of any buld- ing for the purpose of making any examina- ton herein provided for shall be paid by the City Treasurer upon the requisition of the Inspector of Buildings. Such expenses sal 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 1 paid as aforesaid.
 Sec. 3s. Every building hereafter erected | to be used as a noted or schoolhouse the l height of which exceeds sixty feet, and every building hereafter erected or altered to be used as hospital, asylum or institution for | the treatment of persons the height of which exceeds forty-flve feet, and every other build l ing the height of which exceeds seventy-fve 1 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 f1re-proof that is to say, they shall be constructed with walls of brick stone iron or other hard, incombustble 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 l walls. The stairs and staircase landings shall be built entirely of brick, stone, iron or other hard incombustible materials. No wood work or other inf1ammable material shall be | used in any Of the partitions, furrings, or ceilings in any such fire-proof buildings, ex- cepting, however, that the doors and windows and their frames, the trims, the castings, the interior finish when filled solid at the back with ire-proof material and the floor boards and sleepers directly hereunder, may be of wood In all fre-proof buildings the follow | ing rules shall be observed:
 1. 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 nectioGs of rolled beams with each other and with grders shall be in conformity with the ! practice of the Carnegie. Trenton, Phoenix Pencoyd, or other frst-class rolling mills as published in their standard books and sheets and approved by the Inspector of Buildings All Wrougth-irou or rolled steel beams eight inches deep and under shall have bearings equal to their depth. if resting on a wall nine and twelve-inch beams shall have bear