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Extending existing steel beam.

Discussion in 'Building' started by Lightfan, 27 Sep 2020.

  1. Lightfan

    Lightfan

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    Hi,
    I have to remove a brick pillar extend an existing steel beam by 150mm to the inner leaf of a cavity wall. (Current beam 178x60mm PFC) I've been advised by an engineer to to stitch a new 700mm long 125x65x15mm PFC to the inside of the existing using x4 M12 8.8 high tensile steel bolts or if I want for peace of mind use x 4 M12 10.9 high tensile steel bolts and use a 450x150x100mm padstone. Would this be ok? The other side is resting on a brick pillar.
     
  2. Bonni

    Bonni

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    Structural work requires building regs and they would want a copy of the structural engineers notes on the beam for their file.
     
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  4. tony1851

    tony1851

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    Grade 8.8 is the usual standard and would be fine.
    More importantly, has the SE given you the bolt spacing?
     
  5. Lightfan

    Lightfan

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    Yeah, minimum 50mm from edge of existing. Then 140mm triangulated/ pyramid spacing. Using M12 60mm 10.9 high tensile. I always over engineer...
    Cheers
     
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  7. Lightfan

    Lightfan

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