1927 086 Ordinance - Laserfiche WebLink

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water of a depth of one-half (.?) inch face aotvnward. Aitei being in the water for tYiirty (30) mirnttes, the b1ocY is again iveighed, then ircunersed in water for four (?) hourg and weighed again. -;1t i-s theii immersed fo-r 'forty-eight 148 ) hours and,the result noted. After weight is ta,ken the compressive strengtYi of -the block vrhile wet is determined as provided above. TITI,E VIIT-IROV ANID STEEL CONSTIiUCTIQN. ---.• Section 151. QUAI,ITY OF YATERIAI,. All steel slzall be of imedium - open hearth steel in.accordance with manufacturers' standards: Specifications arid vrorlanansnip in shop or field shall be in accordanee with the best American practxce. TITI,F IX Tv00D CONSTRUCTION. " ? . ? . . Section'=152. -FI,OOR AND ROOF BEAMSo - IJo floor or -roof beams or jo'ist used in any building hereafter erected, when the enclosi.ng iva.l.ls 'and roof. -:covering.s, the interior timber? and iron sti~uctural parts are not pr-otectecl with fire resisting ma.terials, and ivhen the enclosing and interior partition walls.are constructed entirely of wood, shall be of a less thickness,'thari two (,2) inch stock,'-except in dwelling houses where - the span-does not exceed fifteen (15) feet. in width, -when one and three-quarters (1- 3/4) iizches will be permissible. . . _ . . . • Ends of all wooden floors or roof beams in buildin.gs as above desciibed, vahich rest upori- or are- -liuilt into the tasonry, shall enter the wall to the depth ;.of at least four (4)-inches, unless the wall is properly.:corbeled out for four-(4) inches, in which case brick work or corbeling shall extend to the top of joists. 2'he 'ends of •all such bearns ;shall be shaped or arrarigecl• tYiat in case of ar?y. de- flection- or' breaking they may f&11 out without doing> much;-injury to -the : brick wall. All, joists entering any brick' or storie'wall -shall be splayed orie-quarter .(a) inch to- one (1) inch shori;er' at the top edge or - in other 'ivords to have wliat is known as a iire cut. - . . . . , . Depth of joist to be in proportion to the span and in all cases to be ample size to provid.e for and' safely • carry tYie -load" to 'be p].aced upon sa.rue. Seco152Ao ADDITION TO SECTTON 152. On-all buildings of-*frame'constx-uction, there shall" be, - in' ad:dition to their exterior 'finish, a corering or sheatY?ihg of boards to be; not less •thb.n seven-eighths' (7/8) inch tnick and- allto be cuell: and securely nailed to the studdirig9 on t,op -of'which ehall -be placed a continuouB layer? of build'ing paper all to, be tiv'ell lapped -and secured in pla.ce, nefore exterior finish is applied. Sec.153o 'TRI ?N6I?F?.? AND FIEA-JER 3E.9M.S. All tri;,mier and neader beams shall be doubled and shall be properly spiked or Uolted together. • ? - - ''A].l joists shall be properly framed or.spiked togetner, and to the trimmers, and shall be properly bridged at least once in every 8 feet of space. When the header is more tha.n fifteen ?15) feet in length. (or ivnere the header is over 'seven 17) feet long a.nd =is" framed_ to the trii-nrner beams- tnore `:than' five (5) feet from the bearing end:tliere-of} ?v-ought' iron-flitch-plates of proper..thickrne"ss and depth shall be placed betzveeri the wooden `bearus., and all suitably bolt'e.d: toge.ther. 1hrough the iron plates;- or -steel beam's of sut'ficient st-rengtn may be. used -in place of flitch plate beams. Every beam, except- header and tail.,:beams, shall rest no.t less than four (4) in.ches upon the wall, or on a girder. • • -.? : . : Sec.154. 'CU1TIIdG BDAAr1S AND SUPPORTS. =No' wooden -beam or -joist shal], be cut for pipe or - bored for "knob and tub`e"-electrica:l-'-work when,the. cut is .deepe.r or,..the cen- ?