Vijay Posted November 26, 2017 Share Posted November 26, 2017 (edited) Is there any reason I couldn't have these so they sit at the same height as the concrete beams in a B&B floor? I know a lot of details show the vents under the beams. So like this: air vent.bmp Edited November 26, 2017 by Vijay Link to comment Share on other sites More sharing options...
Oz07 Posted November 26, 2017 Share Posted November 26, 2017 Ground level outside Link to comment Share on other sites More sharing options...
Vijay Posted November 26, 2017 Author Share Posted November 26, 2017 sorry, meant the internal vent height. I know external vent is 150mm above ground level Link to comment Share on other sites More sharing options...
Russell griffiths Posted November 26, 2017 Share Posted November 26, 2017 do you mean the beams have a flat area below the height that the blocks sit at so providing a free air gap that the periscope can sit in so allowing good air flow? if so this sounds good to me. Link to comment Share on other sites More sharing options...
nod Posted November 26, 2017 Share Posted November 26, 2017 7 hours ago, Vijay said: Is there any reason I couldn't have these so they sit at the same height as the concrete beams in a B&B floor? I know a lot of details show the vents under the beams. So like this: air vent.bmp Hi Vijay if you have the vents at the same height as the beams, you will struggle with airflow BC will want to see the slab before you start building So it might be worth running it past BC We had a simalar problem and I had to buy 70 ent extensions to allow the be to clear the beams Link to comment Share on other sites More sharing options...
CC45 Posted November 26, 2017 Share Posted November 26, 2017 We had to buy extensions for ours as a result of the amount of floor insulation we used. Worked ok. Link to comment Share on other sites More sharing options...
Vijay Posted November 27, 2017 Author Share Posted November 27, 2017 9 hours ago, nod said: Hi Vijay if you have the vents at the same height as the beams, you will struggle with airflow BC will want to see the slab before you start building So it might be worth running it past BC We had a simalar problem and I had to buy 70 ent extensions to allow the be to clear the beams The vents would sit at the lower part of the beam, so be under the floor block level. Did BC make you lower it? Link to comment Share on other sites More sharing options...
Russell griffiths Posted November 27, 2017 Share Posted November 27, 2017 aren't you building in icf? if so can you not cut the inner poly down 50-75mm so the black letterbox sits under the level of the beams. Got out a pic. Link to comment Share on other sites More sharing options...
Vijay Posted November 27, 2017 Author Share Posted November 27, 2017 9 minutes ago, Russell griffiths said: aren't you building in icf? if so can you not cut the inner poly down 50-75mm so the black letterbox sits under the level of the beams. Got out a pic. I could if I really had to but would be easier for me at this stage to do it on the the next course of ICF, once the floor beams are in (and I would know exactly where the floor beams and rebar are located) Got out a pic?? Link to comment Share on other sites More sharing options...
nod Posted November 27, 2017 Share Posted November 27, 2017 9 hours ago, Vijay said: The vents would sit at the lower part of the beam, so be under the floor block level. Did BC make you lower it? 8 hours ago, Vijay said: I could if I really had to but would be easier for me at this stage to do it on the the next course of ICF, once the floor beams are in (and I would know exactly where the floor beams and rebar are located) Got out a pic?? 9 hours ago, Vijay said: The vents would sit at the lower part of the beam, so be under the floor block level. Did BC make you lower it? No our engineer said I was wasting my time putting the vents in if they were obstructed So I made the decision to extend them all Link to comment Share on other sites More sharing options...
Mr Punter Posted November 27, 2017 Share Posted November 27, 2017 The proposal looks fine as it will vent under the blocks and you can it the vent on the beam DPC. Do you have any vents where the beams run parallel? Link to comment Share on other sites More sharing options...
Oz07 Posted November 27, 2017 Share Posted November 27, 2017 I'm not sure you even understand what you are asking. You sit the internal vent on the same course you place your beams. The beams hold the block infill 50mm above this course. Your vent fits in this gap what alternative is there?! What are you asking?! Link to comment Share on other sites More sharing options...
Russell griffiths Posted November 27, 2017 Share Posted November 27, 2017 Have you got a picture @Vijay Link to comment Share on other sites More sharing options...
Vijay Posted November 28, 2017 Author Share Posted November 28, 2017 21 hours ago, Mr Punter said: The proposal looks fine as it will vent under the blocks and you can it the vent on the beam DPC. Do you have any vents where the beams run parallel? I have but the beam will be at least 50mm in front of vent Link to comment Share on other sites More sharing options...
Vijay Posted November 28, 2017 Author Share Posted November 28, 2017 20 hours ago, Oz07 said: I'm not sure you even understand what you are asking. You sit the internal vent on the same course you place your beams. The beams hold the block infill 50mm above this course. Your vent fits in this gap what alternative is there?! What are you asking?! 1 minute ago, Vijay said: I have but the beam will be at least 50mm in front of vent This is how it's been drawn on my plans Link to comment Share on other sites More sharing options...
Vijay Posted November 28, 2017 Author Share Posted November 28, 2017 And this is how I would like to sit them, on the same level as the beam Link to comment Share on other sites More sharing options...
Russell griffiths Posted November 28, 2017 Share Posted November 28, 2017 How come you want to sit them higher? have you poured up to that level. Tbh both ways look fine to me the only argument I can see is if bc say that you won't have enough air flow with it being tight to the underside of the floor. Link to comment Share on other sites More sharing options...
Vijay Posted November 28, 2017 Author Share Posted November 28, 2017 Not poured the concrete yet but it would just make my life easier to do it on the next course when the beams are in place. It also allows me to try and set the brickwork out, so the vents are in the right place on the exterior Link to comment Share on other sites More sharing options...
Brickie Posted November 29, 2017 Share Posted November 29, 2017 I'd say there's no problem with it,is standard practice to do it that way. Best run it past BC or your architect/engineer first though. Would be a pain to have to alter it after! Link to comment Share on other sites More sharing options...
Vijay Posted November 29, 2017 Author Share Posted November 29, 2017 Cheers guys. Spoke to Polarwall and he has no problem with them on the same level either and is gonna knock me up a sketch to show building control Link to comment Share on other sites More sharing options...
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