Rank: Forum user 
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I know we are mostly health and safety first and foremost, but a lot of health and safety jobs have environment thrown in for good measure, so maybe someone here can help: I have been asked to provide the weight of some steel so that a client can carbon footprint it. I gave them the weight and now they are asking for square footage/volume of it to determine the carbon footprint. Is it normal to need both figures for this? I can't help but think that either figure would bring you to roughly the same result. I've not got a problem doing it, though it will be faff going through hundreds of drawings, but at least that's my day sorted.
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Rank: Super forum user
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Rank: Super forum user
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Yes, it will be about all the things other than iron that will enable calculation of the carbon footprint. Suppose you have manganese or chromium in the mix (or any of the other alloying metals, or other additives such as carbon[!]) to calculate the carbon footprint you would need to know where these were sourced from and how they got from mine etc to steelworks, where that that steelworks is, and how it was transported to your location. So, lots and lots of variables in the proverbial mix. P
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Rank: Super forum user 
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Is it construction steel? Or steel for some other purpose (i.e. are you making a building, or a ship, or a watch)?
If it is construction, the alloy won't make much difference - the question will be only whether it's stainless. What will make a difference is the form of the steel - so they should be asking how much of it is reinforcing bar, hot rolled section (i.e. beams and columns), cold formed section (purlins, sheeting), prestress bar/strand, fixings, that sort of thing.
Steel supply is a bit difficult at the moment (we have one project on hold because it was going to use either Russian steel rolled in Ukraine, or Ukrainian steel rolled in Russia, I forget which.)
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Rank: Forum user
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sounds like a job for the Brick Counters, (Sorry QS) to me,
Or the Supply Chain Department,
Or Google and give them an 'Assumed' answer, I just googled it but the thread won't let me post the diagrams,
one showed that for every ton of steel produced, 1.53 ton's of Carbon was produced, (World Steel Association)
for the reasons given above, there is so much involved before the stuff gets to your site that you just won't know,
Edited by user 26 July 2022 14:07:37(UTC)
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Rank: Forum user
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Thanks for the replies everyone. There's obviously a lot of variables, but it is mild steel for construction work, namely, a staircase. Isn't mild steel a pretty set combination of things? I don't think it will be long before we're asked how much electricity we used to cut the steel and where we got our grinding discs from. Ultimately, it's a big contract, so what client wants, client gets :-D
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Rank: Super forum user 
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If they know the type and weight of the steel, they can look up the typical carbon footprint of that type of steel per tonne and multiply by the weight. The volume doesn't provide any additional information. If you know the type of steel, you can look up the typical density of that type of steel. Then the volume is the weight divided by the density. So giving the volume doesn't give any new information when you already have the weight and type. There are tables giving standard figures for types of materials. They are not going to work it out from scratch.
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