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C . Job Tempering : <br /> All Concrete shall be placed within 1 - 1 /2 hours after introduction of water to the <br /> mix . Under no condition may additional water be added . Submit time stamped <br /> batching tickets on delivery of concrete to job site . All concrete where water has <br /> been added will be removed and replace with proper concrete at no cost to the <br /> Owner. <br /> 3 . 02 PLACING OF CONCRETE <br /> A . Review: <br /> No concrete shall be placed until all reinforcing steel , pipes , sleeves , inserts, etc , <br /> have been set in place and reviewed by the Owner ' s representative . Contractor <br /> shall notify the Owner ' s representative of scheduled pours 24 hours prior to <br /> pouring. <br /> B . Placing : <br /> Concrete shall be placed in properly cleaned and prepared forms in accordance with <br /> the requirements of ACI-301 . <br /> C . Conveying : <br /> Concrete shall be handled from the mixer to the place of final deposit as - rapidly as <br /> practicable by methods which will prevent segregation or loss of ingredients and in <br /> a manner which will assure that the required quality of the concrete is maintained . <br /> All other requirements of ACI-301 shall be followed. <br /> D Depositing; <br /> Concrete shall be deposited continuously or in layers of such thickness that no <br /> concrete will be deposited on concrete which is hardened sufficiently to cause the <br /> formation of seams or planes of weakness within the section. <br /> E . Consolidation : <br /> All concrete shall be consolidated by vibration, spading, rodding, or forking so that <br /> the concrete is thoroughly worked around the reinforcement, around embedded <br /> items , and into corner of forms eliminating all air or stone pockets which may cause <br /> honeycombing, pitting, or planes of weakness . <br /> 3 . 03 JOINTS <br /> A . Construction Joints : <br /> 1 . Locate as shown or near points of minimum shear and as approved by <br /> Architect/Engineer for beam or slabs . <br /> 2 . Locate joints in vertical members , walls at underside of floors or beams , and <br /> at tops of footings . <br /> 3 . Floor slabs keyed joints maximum spacing 20 ' plus or minus each direction <br /> unless otherwise noted . 03300-4 <br />