Posted: Tue Dec 22, 2009 12:35 pm
I am building a Durabase DIY conservatory which has 4 (450mm cubed) concrete pad footings with a steel base sitting on top of pins on a plate. Unfortunately I have discovered a field drain on the furthest projecting corner (this is hole 'B' in picturetrail link below, of pic no. 1020436, and the sewer is the furthest to the right hole. I have asked durabase, and they admit they are not qualified to answer this type of question. I have clay soil.
http://www.picturetrail.com/sfx/album/view/13290713
So far, I have bought a lintel (in 1020436), and a 19cmx19cm metal plate was supplied by Durabase to spread the load. The photo 'drain pipe 2 options' for concrete pad hole B, the top red x is the original place for the pin to sit on. Can i stick to the original plan, rather than moving all pads over a decimeter (orange x) dig every other hole to the right? The distance from the top of the pipe to the top of the slab is approx 12cm at a guess ('drain profile'), but this is the highest point in the garden. I need to leave 225cm from DPC level for the skirtings. On the concrete pad plan it gives a range of -top of pads to top of steel 250-290mm. (top of steel will be the DPC level).
Also, do you have any advice on when is safe to concrete in winter? (I know i chose the wrong time to do this, hindsight and all that) I have seen many websites about it and suggestions of using warm water, heated aggregates, and 12inch insulation over the concrete. I was thinking to put a disposable barbeque into the hole on top of the gravel, add in the rest after.... With the next few days seeing lows of -9C, I'm not going to bother yet, but when its 0 and -1, perhaps I could try? I am desperate to get some components out of the house, and make use of the annual leave i've taken too....
thanks for any helping the helpless...greatly appreciated
http://www.picturetrail.com/sfx/album/view/13290713
So far, I have bought a lintel (in 1020436), and a 19cmx19cm metal plate was supplied by Durabase to spread the load. The photo 'drain pipe 2 options' for concrete pad hole B, the top red x is the original place for the pin to sit on. Can i stick to the original plan, rather than moving all pads over a decimeter (orange x) dig every other hole to the right? The distance from the top of the pipe to the top of the slab is approx 12cm at a guess ('drain profile'), but this is the highest point in the garden. I need to leave 225cm from DPC level for the skirtings. On the concrete pad plan it gives a range of -top of pads to top of steel 250-290mm. (top of steel will be the DPC level).
Also, do you have any advice on when is safe to concrete in winter? (I know i chose the wrong time to do this, hindsight and all that) I have seen many websites about it and suggestions of using warm water, heated aggregates, and 12inch insulation over the concrete. I was thinking to put a disposable barbeque into the hole on top of the gravel, add in the rest after.... With the next few days seeing lows of -9C, I'm not going to bother yet, but when its 0 and -1, perhaps I could try? I am desperate to get some components out of the house, and make use of the annual leave i've taken too....
thanks for any helping the helpless...greatly appreciated
