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Recent content by TWfea

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    Crane foundation - CIRIA C761

    Hi All, I was wondering if anyone could help me to understand the eccentricity equation in Example 1 contained in the CIRIA report C761. The equation is Eccentricity, e2 = Md x sin(45) / Fd, Where Md is the moment, Fd is the vertical force I understand, that the...
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    Min reinforcement steel in foundation for self erecting crane

    Hi Klitor, the contractor has used a standard raft foundation design from the supplier, although based on ground conditions it wasn't required. The foundation is poured, so there was no chance to change the size. But yes, based on the design loads per base pad (300kN) a thinner slab or pad...
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    Min reinforcement steel in foundation for self erecting crane

    Hi All, thanks for some good inputs. The punching shear, shear, bearing pressure all pass with Unity factor from 0.25 - 0.1. So there are no concerns there. Generally speaking the loads are quite low relative to the foundation size, and there is no expectation of uneven settlement (the raft...
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    Min reinforcement steel in foundation for self erecting crane

    Hi all, I have been asked to approve a raft foundation for a self erecting crane, and am running into an issue regarding the minimum steel requirement (As,min). The foundation has already been poured and is designed in accordance with the suppliers design recommendations. The raft is 7m x 7m x...
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    Construction site hoarding with access gate according to Eurocode 1

    Hi HTURKAK, here is a sketch, with 3 scenarios the highlighted one is the one I mentioned earlier, and the others are from the Eurocodes. as mentioned earlier, we have a situation in between the examples provided in the eurocode. The Eurocodes do allow for interpolation if the return corner...
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    Construction site hoarding with access gate according to Eurocode 1

    Hi everyone, I am working on a hoarding design (approx 100m long), and I have to include an access gate in the centre. I am applying Eurocode 1, section 7.4,.1 (free standing walls and parapets) I was wondering how others deal with the wind load zones (A,B,C,D) at access points. The normal...
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    Pad foundation effective bearing area and foundation depth

    Thanks EireChch. I agree with your comment, and it all seems to stem from the fact that the foundation will be more rigid than the soil that it is built on. It is good to hear the view point of others, so thanks again for your contribution.
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    Pad foundation effective bearing area and foundation depth

    Hi all, I have a couple of questions regarding the effective bearing area, and foundation depth for pad foundations. 1. With regard to the critical depth of the pad foundation. I have concluded the following, and was wondering if this seems reasonable, or are there other methods that can be...
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    Punching shear on plain concrete pad foundation Eurocode 2

    Thanks HTURKAK, I implemented the formula from clause 6.4.7, and the design passes all the checks We are still considering putting in the minimum steel reinforcement. Although the foundation strength is more than adequate, the addition of reinforcement will only be to err on the side of...
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    Punching shear on plain concrete pad foundation Eurocode 2

    I have been asked to design a "temporary pad foundation", for 4 support towers used to support some formwork. Due to the temporary nature, their preference is for plain concrete. My issue is that there doesn't seem to be a straight forward way to implement the Eurocode 2, for punching shear on...
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