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Gateway Park Center PERKINS+WILL <br /> 810495.00 <br />12/06/18 <br />031000-11 Concrete Formwork <br />a)Make necessary corrections or adjustment to formwork to meet <br />tolerance requirements. <br />2.Retighten forms and bracing before concrete placement to prevent mortar <br />leaks and maintain proper alignment. <br />3.Notify Owner’s Testing Agency sufficiently in advance of placement of <br />concrete to allow inspection of completed and cleaned forms. <br />H.During Concrete Placement: <br />1.Maintain a check on formwork to ensure that forms, shoring, ties and <br />other parts of formwork have not been disturbed by concrete placement <br />methods or equipment. <br />2.Use positive means of adjustment as required for formwork settlement <br />during concrete placing operations. <br />I.Camber: <br />1.Provide camber in formwork as required for anticipated deflections due to <br />weight and pressures of fresh concrete and construction loads. <br />2.Camber bottom forms where indicated on the drawings. Whenever forms <br />are cambered, screeded levels for establishing top of concrete must be <br />cambered to the same amount and to the same profiles such that <br />scheduled depth of member is not reduced by lifting of forms. Check <br />camber and adjust forms before initial set as required to maintain camber. <br />J.Surface Defects: <br />1.Install forms that will not impair the texture of the concrete and are <br />compatible with the specified finish type. <br />K.Formwork Loads on Grade <br />1.Where loads from formwork bear on grade, provide suitable load- <br />spreading devices for adequate support and to minimize settlement. In no <br />event shall frozen ground or soft ground be utilized directly as the <br />supporting medium. <br />L.Footings and Grade Beams: <br />1.Provide forms for footings and grade beams if soil or other conditions are <br />such that earth trench forms are unsuitable. <br />2.When trench forms are used, provide an additional 1” (25mm) of concrete <br />on each side of the minimum design profiles and dimensions indicated. <br />M.For slabs-on-grade, secure edge forms in such a manner as to not move under <br />weight of construction loads, construction and finishing equipment, or workers.