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CONCRETE FORMWORK <br />Section 03100 <br />15-1207 <br />3.05 REMOVAL OF FORMS <br />A. Remove without damage to concrete surfaces. <br />B. Sequence and timing of form removal shall insure complete safety of concrete structure. <br />C. Forms shall remain in place for not less than the following periods of time. These periods <br />represent minimum cumulative number of days during which temperature of air in contact with <br />concrete is 60 degrees F and above. <br />1. Vertical forms of foundations and walls: 5 days. <br />2. Slab edge screens or forms: 7 days. <br />3. Concrete columns and beam soffits: 28 days. <br />D. Concrete shall not be subjected to superimposed loads (structure or construction) until it has <br />attained its full design strength and not for a period of at least 21 days after placing. Concrete <br />systems shall not be subjected to construction loads in excess of design loads. <br />END OF SECTION <br />"x.11207 lincoln es- cafeteria replacementl4.06 projmanlconsultantsUincoln es struct specs 15-0623\03100—concrete formwork w <br />asg edits 15-0623.docx <br />Last Updated: October 31, 2011 <br />5 <br />