Hi All
Not sure if this needs to be in the garden sub forum but I thought it would benefit from general building input in terms of foundations etc.
Essentially I want to build a raised timber frame sitting on concrete blocks to support a 17ft plastic keter shed (storing general items nothing heavy). My plan was to dig individual holes and fill with compacted mot type 1, followed by mortar, blocks, doc and 5x2 timber. (See example plan)
Due to the garden being slightly sloped and with all the heavy rain recently it has been quite flooded and hasn't returned to a firm surface as of yet.
I'm aware I should be thinking about french drains or a soakaway but because this is the furthest part of the garden and on a slope in quite limited. It's also clay based which makes draining even more difficult.
I also know pouring a concrete slab would be better but I have already spent almost £500 on timber, blocks, type 1 and everything else needed.
Would you say adding 2-4 tonnes of recycled crushed concrete or 40mm stone compacted first, followed by a geotextile membrane and then type 1 on top of that be enough so create a stable ground for the blocks?
The timber and half the blocks will always sit above any standing water, my concern is the sinking of any supports or the integrity of any mortar joint if it becomes waterlogged. I'm hoping however if I have a layer of 40mm stone then this will aid drainage of the area.
Thanks
Not sure if this needs to be in the garden sub forum but I thought it would benefit from general building input in terms of foundations etc.
Essentially I want to build a raised timber frame sitting on concrete blocks to support a 17ft plastic keter shed (storing general items nothing heavy). My plan was to dig individual holes and fill with compacted mot type 1, followed by mortar, blocks, doc and 5x2 timber. (See example plan)
Due to the garden being slightly sloped and with all the heavy rain recently it has been quite flooded and hasn't returned to a firm surface as of yet.
I'm aware I should be thinking about french drains or a soakaway but because this is the furthest part of the garden and on a slope in quite limited. It's also clay based which makes draining even more difficult.
I also know pouring a concrete slab would be better but I have already spent almost £500 on timber, blocks, type 1 and everything else needed.
Would you say adding 2-4 tonnes of recycled crushed concrete or 40mm stone compacted first, followed by a geotextile membrane and then type 1 on top of that be enough so create a stable ground for the blocks?
The timber and half the blocks will always sit above any standing water, my concern is the sinking of any supports or the integrity of any mortar joint if it becomes waterlogged. I'm hoping however if I have a layer of 40mm stone then this will aid drainage of the area.
Thanks
