Ord22 227 - Laserfiche WebLink

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in the forms as soon as praotioable after ~ixin~ and in no case shall concrete be us ed which has t:e an wet more than one hour. Joints in oonarete poured at different times shall be made at sueh places as will not lessen the strsugth of the construction. Joints with old Gonorate shall be mada by cleaning and roughening the old Gonerete and conaring same with cement grout. ~~(Forms shall of suffioient strength to preserve their shape, and tight enough to prevent leaking of concrete. All rubbish and dirt shall be carefully removed from forms~ The forms for the beams and girders of a floor shall be oonstruoted in oonjunotionrwith the forme for the floor slabewhiah they support, and no~rms shall be removed until all parts of the respective floors are strong enough to s~pport themselves and the loads that may co~e upon the; during construction. be / SECTION 19. The fol1cwing unit load per square feet must not exceeded: Unit Loads of Masonry. Briok work, lime mortor ----------- 7 tons 3riak work, cement & Lime mortor --10 ton. Brick work, cement mortor ---------15 tons Concrete ______-___________________20 tons Granite ----- -----------------------2S tons Test to determine the crushing etrenght of concrete she,ll be made by a competent Engineer under the direction of the Board of Trustees. Tests of any members of reinforced concrete structure shall be made by the owner,when required py the Board of Trustees, and said tests shall show that the member tested will safely oarey twi=e their designated load, and without de~lecting more than one seven hundredth (1/700) of the span. Service Pipe.. and Cutting of Conarete or Reinfor~ement. SECTION 19. Conduits or pipes for conveying electricity, air or gas may be embedded in the concrete eXQept in .olumns, provided they are of suoh size and plaoed so as not to weaken the struoture of its ,fire- proofing in any way. e.