How far can you span a 4X12 beam?

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  • 1 decade ago
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    There are many factors to consider to determine the effective and the limit of the beam span whether for steel or concrete. These are:

    1. Strength of Materials (Chemical and Physical)

    2. Cross sectional dimension (you already gave thisO

    3. Deadweight of the material

    4. Operational Loads

    5. Seismic and safety factors

    6. Etc.

    In my experience, i encounter a concrete beam span of 25 ft or 8 m in a high rise building and its dimesions is 800mm by 1m depth.

    Source(s): civil engineer
  • 1 decade ago

    it depends on how much weight is on it

    in regular house construction usually about 14ft

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