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B. Aggregate Base Material: <br /> 1. Gradation: Conform to gradation shown on the Structural Drawings. <br /> 2. Equivalent Gradation:Equivalent gradations may be used upon approval of the Structural Engineer of <br /> Record(SER).Submit proposed equivalent gradation to the Architect for approval within 30 days after the <br /> award of contract.Equivalent gradation shall be one of the following. <br /> a. Any state DOT approved road base material meeting the following gradation: <br /> 1) Std.Sieve Size %Passing <br /> (a) 1-1/2" 100 <br /> (b) No.4 15-55 <br /> (c) No.200 3-12 <br /> b. Material conforming to the General Requirements and of the Gradation "A","C, or "D" <br /> requirements(with the modified allowance of 5%to 12%passing the No.200 sieve)as defined by <br /> ASTM D 1241. <br /> 3. Material passing the No.200 sieve shall be clean granular fill with less than 3%clay and/or friable particles. <br /> C. Aggregate Choker Material:Clean granular fill with less than 3%clay and/or friable particles.Use one of the <br /> following gradations: <br /> 1. ASTM 448 No. 10 with 6%to 12%passing No.200 sieve. <br /> 2. Material meeting the following gradation: <br /> a. Std.Sieve Size %Passing <br /> b. N).4 85-100 <br /> C. No.8 75-95 <br /> d. No. 16 55-75 <br /> e. No.50 22-45 <br /> f. No. 100 10-30 <br /> g. No.200 6-12 <br /> 3.2 FORMWORK <br /> A. Forms: <br /> 1. Plywood, metal, metal-framed plywood faced, or other acceptable panel-type materials to provide <br /> continuous,straight,smooth,exposed surfaces. <br /> a. Furnish in largest practicable sizes to minimize number of joints and to conform to joint system shown <br /> on the drawings. <br /> 2. Provide lumber dressed on at least two edges and one side for tight fit. <br /> 3. Partial depth forms shall not be used. <br /> B. Form Release Agent: <br /> 1. 100%biodegradable,non-toxic,100%natural organic chemical release agent that will not cause surface <br /> imperfections,non-staining,and compatible with field applied paints,toppings,curing compounds,and <br /> other coatings.Provide one of the following: <br /> a. Star Seal EF V Release by Vexcon. <br /> b. Form-EZE Natural by Euclid. <br /> c. Farm Fresh by Dayton Superior <br /> 2. Use same brand form release agent for all forms. <br /> 3.3 REINFORCEMENT <br /> A. Reinforcing Bars: <br /> 1. ASTM A615,deformed,Grade 60. <br /> 2. ASTM A706,deformed,Grade 60. <br /> B. Tie Wire: <br /> 1. Minimum 16 gage annealed type. <br /> 2-26-18 <br /> 033000-2 <br />