Hi! We are having a seating wall made of Unilock pavers put in. We
have a concrete slab patio. Is it better to put the wall directly on
the concrete or next to it? We have received different opinions on
this, some say the concrete will crack. Thanks for any help!
On Jul 12, 3:03 pm, email@example.com wrote:
When you say that the wall will be made out of pavers, do you mean the
stackable wall block, or are you talking about leftover patio pavers?
Either way, if you're talking about a wall roughly 18" high and a foot
thick, that's about 275 pounds per linear foot. If the slab doesn't
have reinforcement, you're in a colder climate, the sub-grade wasn't
prepared correctly or the slab is on expansive soil (clay), then the
odds are pretty good that the slab will crack.
I'd probably put the low wall next to the patio so they can move
independently of each other. You could use concrete block and add
colorant to surface bonding cement to give the wall a stucco look and
top it with whatever. That would bring the weight down a fair.
I don't know what stackable wall pavers are.
Garden wall blocks would be stable, but a bit thin. I can't
imagine them looking good on the back side.
Keystone or similar will break the concrete at about 80# per unit
and I can't imagine them looking satisfactory on whatever is the
Win, lose, or draw, take Rico's advice and keep the wall off the
slab or excavate under the slab edge and improve the bearing.
Keep the whole world singing . . . .
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