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PGSF WMVD Storm and Combined Sewer - Construction Package 2 Concrete Forming <br />Project No. 180162 03 11 00 - 1 <br /> <br />SECTION 03 11 00 <br />CONCRETE FORMING <br />PART 1 GENERAL <br />1.01 DESCRIPTION <br />A. Formwork requirements for concrete construction. <br />1.02 QUALITY ASSURANCE <br />A. References: <br />1. The references listed below are part of this section. Where a referenced document <br />cites other standards, such standards are included as references under this section <br />as if referenced directly. In the event of conflict, the requirements of this section shall <br />prevail. <br /> <br />Reference Title <br />ACI 117 Tolerances for Concrete Construction and Materials <br />ACI 301 Specifications for Structural Concrete <br />ACI 318 Building Code Requirements for Structural Concrete <br />ACI 350 Code Requirements for Environmental Engineering Concrete Structures <br />ACI 350.5 Specifications for Environmental Concrete Structures <br />National Institute of <br />Standards - PS1 <br />Construction and Industrial Plywood <br />B. Design – General: <br />1. Provide design of formwork, shoring and reshoring systems by the Contractor’s <br />Professional Engineer currently registered in the State of Washington <br />2. Design, engineering, and construction of formwork, shoring, and reshoring systems is <br />the responsibility of the Contractor. <br />3. Develop a procedure and schedule for removal of shores (and installation of <br />reshores). <br />4. Structural record calculations, signed and sealed by the Contractor’s Engineer, are <br />required to prove that all portions of the structure, in combination with the remaining <br />forming and shoring systems, have sufficient strength to safely support their own <br />weight plus the loads placed thereon. <br />5. When developing procedures, schedules, and structural calculations; consider the <br />structural system that exists, effects of imposed loads, and the strength of concrete <br />at each stage of construction. <br />C. Design Criteria: <br />1. Design formwork in accordance with ACI 301 and ACI 318 for building structures and <br />ACI 350 and 350.5 for environmental structures to provide concrete finishes as <br />specified in Section 03 30 00. <br />2. Design systems for full height of wet concrete pressure. <br />3. Design formwork to limit maximum deflection of form facing materials, as reflected in <br />concrete surfaces exposed to view, to 1/240 of span.