Unformatted text preview: beams. Two-way systems span in two mutually perpendicular directions, usually without beams, Steel and wood framing systems are one-way systems. Two-way systems are generally more efficient than one-way. 4. One-way systems: 1. One-way solid slab, flexible but limited in span. 2. One-way concrete joist system: Allows longer spans. 3. Wide-module or skip joist system: Allows longer spans and uses less concrete. Two-way systems: 1. Two-way solid slab: rarely used, used for very heavy loads. 2. Two-way flat slab: good for heavy loadings. 3. Two-way flat plate: good for lighter floor loadings, very flexible in column locations. 4. Two-way concrete joist or waffle system: Good for longer spans. 5. Posttensiong reduces the necessary depth of the concrete and reduces the risk of cracking....
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- Spring '08