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PGSF WMVD Storm and Combined Sewer - Construction Package 2 Concrete Forming <br />Project No. 180162 03 11 00 - 4 <br /> <br />J. At platforms constructed to move equipment over in-place reinforcement, provide beams, <br />struts, and/or legs, supported directly on formwork or other structural members without <br />resting on reinforcing steel. <br />K. Provide a positive means of adjustment (wedges or jacks) at shores and struts to take up <br />settlement during concrete placement. Brace forms against lateral deflection. Fasten in- <br />place wedges and shims used for final adjustment of forms prior to concrete placement. <br />L. Place tapered through-bolt form ties with the larger end on the side of the structure in <br />contact with liquid. <br />3.03 TOLERANCES <br />A. Install formwork with tolerances in accordance with ACI 117 and the following (the more <br />stringent requirement controls): <br />1. Install formwork in accordance with manufacturer’s written instructions. <br />2. Vertical surface tolerance from plumb; walls, columns, piers, and risers: <br />± 1/2 inch for entire height <br />± 1/4 inch in any 10 feet of height <br />3. Vertical surface tolerance from plumb; exposed wall corners, end columns, control- <br />joint grooves, and other exposed to view vertical lines: <br />± 1/2 inch for entire height <br />± 1/4 inch in any 20 feet of height <br />4. Horizontal variation from level or from grade; top of slabs, slab soffits, ceilings, and <br />beam soffits, measured before removal of supporting shores: <br />± 3/4 inch for entire length <br />± 3/8 inch for any bay or 20 foot length <br />± 1/4 inch in any 10 feet of length <br />5. Horizontal variation from level or from grade; exposed lintels, sills, parapets, <br />horizontal grooves, and other exposed-to-view horizontal lines: <br />± 1/2 inch for entire length <br />± 1/4 inch in any 20 feet of length. <br />6. Plan position variation; columns, walls, and partitions: <br />± 3/4 inch for entire length <br />± 3/8 inch for any bay or 20 foot length <br />7. Plan location and size; sleeves, floor openings, walls, wall openings, beams, and <br />columns: <br />± 1/2 inch <br />8. Cross sectional dimensions; columns and beams and thickness of slabs and walls: <br />± 3/8 inch <br />9. Plan dimensions; footings and foundations: <br />minus 1/2 inch <br />+ 2 inches <br />10. Misplacement or eccentricity; footings and foundations: <br />2 percent of footing width in direction of misplacement <br />not more than 2 inches