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I <br /> 1 Section 6-02, Concrete Structures <br /> 2 January 7, 2019 <br /> 3 6-02.1 Description <br /> 4 The first sentence is revised to read: <br /> 5 <br /> 6 This Work consists of the construction of all Structures (and their parts) made of portland <br /> 7 cement or blended hydraulic cement concrete with or without reinforcement, including <br /> 8 bridge approach slabs. <br /> 9 <br /> 10 6-02.2 Materials <br /> 11 In the first paragraph, the references to "Portland Cement" and "Aggregates for Portland <br /> 12 Cement Concrete" are revised to read: <br /> 13 <br /> 14 Cement 9-01 <br /> 15 Aggregates for Concrete 9-03.1 <br /> 161 <br /> 17 6-02.3(2) Proportioning Materials <br /> 18 The second paragraph is revised to read: <br /> 19 <br /> 20 Unless otherwise specified, the Contractor shall use Type I or II portland cement or blended <br /> 21 hydraulic cement in all concrete as defined in Section 9-01.2(1). <br /> 22 <br /> 23 6-02.3(2)A Contractor Mix Design <br /> 24 The last sentence of the last paragraph is revised to read: <br /> 25 <br /> 26 For all other concrete, air content shall be a minimum of 4.5 percent and a maximum of 7.5 <br /> 27 percent for all concrete placed above the finished ground line unless noted otherwise. <br /> 28 <br /> 29 6-02.3(2)A1 Contractor Mix Design for Concrete Class 4000D <br /> 30 Item number 5 of the first paragraph is deleted. <br /> 31 <br /> 32 Item number 6 of the first paragraph (after the preceding Amendment is applied) is renumbered <br /> 33 to 5. <br /> 34 <br /> 35 6-02.3(2)B Commercial Concrete <br /> 36 The second paragraph is revised to read: <br /> 37 <br /> 38 Where concrete Class 3000 is specified for items such as, culvert headwalls, plugging <br /> 1 <br /> 39 culverts, concrete pipe collars, pipe anchors, monument cases, Type PPB, PS, I, FB and <br /> 40 RM signal standards, pedestals, cabinet bases, guardrail anchors, fence post footings, <br /> 41 sidewalks, concrete curbs, curbs and gutters, and gutters, the Contractor may use <br /> 42 commercial concrete. If commercial concrete is used for sidewalks, concrete curbs, curbs <br /> 43 and gutters, and gutters, it shall have a minimum cementitious material content of 564 <br /> 44 pounds per cubic yard of concrete, shall be air entrained, and the tolerances of Section 6- <br /> 45 02.3(5)C shall apply. <br /> 46 <br /> 47 6-02.3(4) Ready-Mix Concrete <br /> 48 The first sentence of the first paragraph is revised to read: <br /> 49 <br /> - 1 <br /> City of Everett Page AM-32 Amendments <br /> Everett Downtown Streetscape Improvement March 22, 2019 <br />