Need some help!
I am laying a new sandstone patio (3mx4m)which is over an existing rubble filled soakaway (1.5mx1.5mx1.2m deep).
I have limited thickness over the soakaway of 150mm.
For the patio the ground conditions are not too bad so using base of 70mm ballast:cement 10:1 mix with 40-55mm sharp sand:cement 6:1 mix bedding layer.
How do I span the soakaway? Was looking at 5mm thick metal sheeting but this is not cheap. Could I use reinforcing mesh and lay 100mm reinforced concrete cap?
Spanning an existing soakaway - Patio over soakaway
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Slabba.
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100mm reinforced concrete cap over soakaway! More than enough mate. make sure you compact the area of the soakaway until refusal, this should be enough in itself, done it many times and no problems but capping it the way your thinking, bomb proof.
100mm mot type1 hardcore compacted,lay the slabs on a wet mortar bed. remember to lay the indian sandstone the correct way up.!!!
goodluck.
100mm mot type1 hardcore compacted,lay the slabs on a wet mortar bed. remember to lay the indian sandstone the correct way up.!!!
goodluck.
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Tony McC
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Rubble filled soakaway - I thought we'd done away with these useless constructions!
Anyway, with a width/length of 1500mm, I;d normally suggest a cover slab, but as they are minimum 150mm thick, that's not possible in this scenario. Consequently, I'd look at using a few lengths of HoloRib or similar and then bed the flags directly onto the concrete.
Anyway, with a width/length of 1500mm, I;d normally suggest a cover slab, but as they are minimum 150mm thick, that's not possible in this scenario. Consequently, I'd look at using a few lengths of HoloRib or similar and then bed the flags directly onto the concrete.
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lutonlagerlout
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Tony McC
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Nothing, absolutely nothing, ever surprises me about local authorities. They're usually a strange blend of genuinely committed people having a keen sense of public service, with complete and utter eejits.
Why don't us normals use rubble-filled holes as soakaways any longer? Void space. Broken bricks and flagstones generate around 20-30% void space, whereas clean gravel can give 30-50% and storm cells offer 90-95%. More storage for a smaller hole = less digging and less spoil.
Why don't us normals use rubble-filled holes as soakaways any longer? Void space. Broken bricks and flagstones generate around 20-30% void space, whereas clean gravel can give 30-50% and storm cells offer 90-95%. More storage for a smaller hole = less digging and less spoil.
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