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Hi all,
First post on the forum, looking for a few thoughts on my build please. Currently constructing a Pompeii oven in the UK. 6 inch foundation slab was poured over pea gravel and membrane, with a steel mesh buried inside. Left that for about a month and then constructed walls in hallow block. Yesterday I poured every other core, inserting rebar as I went.
It is not a big oven but as you can see, I opted for a central supporting tower, with two hardibacker boards resting on it and the surrounding clockwork. Rebar mesh inserted again and the concrete poured.
This morning, I noticed a hairline crack across the centre of the slab where the hardibacker met. (cut piece meets clean edge although both butted up cleanly).
There is shrinkage round the entire slab so I suspect it is just that in the centre. Common sense also tells me that I have well supported hardibacker and a central support pillar so its going nowhere. Am I right to be unconcerned though? Also, should I be trying to fill the crack asap to keep water out?
Thoughts from you guys greatly appreciated.
Cheers.
First post on the forum, looking for a few thoughts on my build please. Currently constructing a Pompeii oven in the UK. 6 inch foundation slab was poured over pea gravel and membrane, with a steel mesh buried inside. Left that for about a month and then constructed walls in hallow block. Yesterday I poured every other core, inserting rebar as I went.
It is not a big oven but as you can see, I opted for a central supporting tower, with two hardibacker boards resting on it and the surrounding clockwork. Rebar mesh inserted again and the concrete poured.
This morning, I noticed a hairline crack across the centre of the slab where the hardibacker met. (cut piece meets clean edge although both butted up cleanly).
There is shrinkage round the entire slab so I suspect it is just that in the centre. Common sense also tells me that I have well supported hardibacker and a central support pillar so its going nowhere. Am I right to be unconcerned though? Also, should I be trying to fill the crack asap to keep water out?
Thoughts from you guys greatly appreciated.
Cheers.