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Design of lifting hooks

 
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nirmaltom
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Joined: 28 Sep 2016
Posts: 2

PostPosted: Wed Aug 22, 2018 5:36 am    Post subject: Design of lifting hooks Reply with quote

Respected sirs

We usually provide lifting hook details for a cover slab based on certain thumbrules.Can anyone help me by explaining how to design the same or how we can  show  the provided structural details are safe.
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saikiran gone
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Joined: 22 Apr 2016
Posts: 214

PostPosted: Thu Aug 23, 2018 8:06 am    Post subject: Re: Design of lifting hooks Reply with quote

nirmaltom wrote:
Respected sirs

We usually provide lifting hook details for a cover slab based on certain thumbrules.Can anyone help me by explaining how to design the same or how we can  show  the provided structural details are safe.


Hi Nirmal,

You need to design the design the lifting hooks for the self weight(Y kN) of impact/moving factor 1.25-1.5 .

The strength of bar is taken as Steel resistance= 0.87*Fy *(0.25*pi*d^2) =x kN.

Result Self weight 1.25*Y kN < Steel resistance X kN.

So, that you can divide the self weight into no of hooks by placing the uniformly to avoid the eccentricity.

Regards,
Saikiran Gone.
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nirmaltom
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Joined: 28 Sep 2016
Posts: 2

PostPosted: Wed Sep 12, 2018 12:50 pm    Post subject: Re: Design of lifting hooks Reply with quote

Hi  Saikiran


Thanks for your advise.one more clarificationis needed on the same subject please.what should be the anchorage length for this hook.55d is not practical here right?.Expecting your reply
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