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Pan Joist Floor System

Pan Joist Floor System. ACI 318, 8.11.1 “Joist construction consists of a monolithic combination of regularly spaced ribs and a top slab arranged to span in one direction or two orthogonal directions.”. Pan Joists. Rib width ≥ 4” Rib depth ≤ 3.5 x rib width Clear spacing between ribs ≤ 30”

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Pan Joist Floor System

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  1. Pan Joist Floor System ACI 318, 8.11.1 “Joist construction consists of a monolithic combination of regularly spaced ribs and a top slab arranged to span in one direction or two orthogonal directions.”

  2. Pan Joists • Rib width ≥ 4” • Rib depth ≤ 3.5 x rib width • Clear spacing between ribs ≤ 30” • Minimum slab thickness 2” for 20” pans and 2.5” for 30” pans Advantages over ordinary beam design: • Requirement for stirrups in beams when Vu > ФVc/2 is waived • Cover requirements for joist is same as for slabs

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