STRUCTURE: STRUCTURAL SYSTEMS RESEARCH TSERING, GARCIA
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STEEL FRAMING: One Way Beam Lateral Forces are more critical in the short direction.
Each pair of external columns support long-span beam or girder. This system is best suited for long, narrow buildings and also if desiring a column-free space. Two Way Beam Girders Beams
Typical span: 20’ to 32’ (if above, open-web steel joints are an economical alternative for their reduced weight). Beam spacing: 6’ to 15’ (dependent on magnitude of applied load and spanning capability of floor
Framing beams into girders minimizes floor depth.
Triple Beam
2 layer system increases floor depth and provides some space for mechanical services.
Primary Beam Secondary
This system is best used if requiring a large, column free space. Use long spanning plate girders or trusses to carry primary beam, which also supports the secondary layer of beams.
Long Spanning Members