Laserfiche WebLink
INDIAN RIVER COUNTY JULY 25, 2014 <br />INTERGENERATIONAL RECREATION CENTER 100% CONSTRUCTION DOCUMENTS <br />D. Isolation Joints in Slabs -on -Grade: After removing formwork, install joint -filler strips at slab <br />junctions with vertical surfaces, such as column pedestals, foundation walls, grade beams, and <br />other locations, as indicated. <br />1. Extend joint -filler strips full width and depth of joint, terminating flush with finished <br />concrete surface unless otherwise indicated. <br />2, Terminate full -width joint -filler strips not less than 1/2 inch or more than 1 inch below <br />finished concrete surface where joint sealants, specified in Division 07 Section "Joint <br />Sealants," are indicated. <br />3. Install joint -filler strips in lengths as long as practicable. Where more than one length is <br />required, lace or clip sections together. <br />3.8 WATERSTOPS <br />A. Flexible Waterstops: Install in construction joints and at other joints indicated to form a <br />continuous diaphragm. Install in longest lengths practicable. Support and protect exposed <br />waterstops during progress of the Work. Field fabricate joints in waterstops according to <br />manufacturer's written instructions. <br />B. Self -Expanding Strip Waterstops: Install in construction joints and at other locations indicated, <br />according to manufacturer's written instructions, adhesive bonding, mechanically fastening, and <br />firmly pressing into place. Install in longest lengths practicable. <br />3.9 CONCRETE PLACEMENT <br />A. Before placing concrete, verify that installation of formwork, reinforcement, and embedded items <br />is complete and that required inspections have been performed. <br />B. Do not add water to concrete during delivery, at Project site, or during placement unless <br />approved by Architect. <br />C. Before test sampling and placing concrete, water may be added at Project site, subject to <br />limitations of ACI 301. <br />Do not add water to concrete after adding high -range water -reducing admixtures to <br />mixture. <br />D. Deposit concrete continuously in one layer or in horizontal layers of such thickness that no new <br />concrete will be placed on concrete that has hardened enough to cause seams or planes of <br />weakness. If a section cannot be placed continuously, provide construction joints as indicated. <br />Deposit concrete to avoid segregation. <br />1. Deposit concrete in horizontal layers of depth to not exceed formwork design pressures <br />and in a manner to avoid inclined construction joints. <br />2. Consolidate placed concrete with mechanical vibrating equipment according to ACI 301. <br />3. Do not use vibrators to transport concrete inside forms. Insert and withdraw vibrators <br />vertically at uniformly spaced locations to rapidly penetrate placed layer and at least 6 <br />inches into preceding layer. Do not insert vibrators into lower layers of concrete that <br />have begun to lose plasticity. At each insertion, limit duration of vibration to time <br />necessary to consolidate concrete and complete embedment of reinforcement and other <br />embedded items without causing mixture constituents to segregate. <br />CAST -IN-PLACE CONCRETE 033000 - 14 <br />