There won't be any condensation, at least nowhere near as much as what you get in your windows and the window boards manage ok.
pvc under them wouldn't stop anything
your heat loss from steel to steel makes no sense - is one of them outside at some point? - if they are all indoors then they will be at the same temperature as each other.
It's normal practice to put in "slip plates/material" and create "expansion pockets" to allow for expansion and hence cracks appearing adjoining masonry with long beams.
Whether or not you do this on the other materials it's a good idea to have = something between the beams and the oak as iron or steel can cause black st= ains on oak.
something between the beams and the oak as iron or steel can cause black stains on oak.
Another worry I have is that the padstones will not be exactly level with the steel I-Beam, therefore the metal will be pressing down on just on narrow line, which may lead to cracking.
So should I maybe put a thin layer of cement or gripfill inbetween the beam and padstone so that the load is spread over all the area?
Another worry I have is that the padstones will not be exactly level with the steel I-Beam, therefore the metal will be pressing down on just on narrow line, which may lead to cracking.
So should I maybe put a thin layer of cement or gripfill inbetween the beam and padstone so that the load is spread over all the area?
This is a question you should really put to your structural engineer but the normal thing to do would be to pack up underneath the beam with steel plate / shims
My physics O level taught me that metal to metal will transfer more heat than metal, DPC membrane, metal, but how much it will slow heat transfer I cannot estimate.
nothing, well not nothing, but if you are talking about a fraction of a degree, or even 1 or 2 degrees C, what difference is it likely to make? - like I said, nothing.
Dry pack - 1:1 cement and sharp sand with just enough water to bind it when compressed. Drive into gap with hammer and suitably sized piece of wood. Sets like rock.
as heat from the internal steel flows into the external steelwork the internal steel gets colder quicker so there's a greater temperature difference inside so heat from the room flows into the internal steelwork quicker and more watts per hour are lost from the room to the outside.
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