do I need a concrete footer ?
#1
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do I need a concrete footer ?
I am planning to install a 13 x 20 greenhouse on top of red clay brick patio shown in picture. One option is to place the greenhouse directly on top of the patio which is a valid solution.
But if I am planning to raise the greenhouse on a brick wall as shown in the picture. (The wall is only going to be 16 inches high in my case).
My question is :
Can we build the brick wall directly on top of the patio or do we need a concrete footer as foundation for such a short wall?
The patio has a 4" base rock fully compacted on top of typical North California clay which seemed extremely hard and never been touched. The green house is Janssens Royal victorian.. 13 x 20' , 2000 lbs total weight, glass panels and aluminum frame.
But if I am planning to raise the greenhouse on a brick wall as shown in the picture. (The wall is only going to be 16 inches high in my case).
My question is :
Can we build the brick wall directly on top of the patio or do we need a concrete footer as foundation for such a short wall?
The patio has a 4" base rock fully compacted on top of typical North California clay which seemed extremely hard and never been touched. The green house is Janssens Royal victorian.. 13 x 20' , 2000 lbs total weight, glass panels and aluminum frame.
#3
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A mortared brick wall should not be built on top of a paver patio. A mortared brick wall like you pictured will need a poured concrete footer. In your case I would pour the footer and build the masonry wall first then install the paver patio. If you've already got the paver patio in place then you might want to consider something other than a rigid, mortared masonry wall for your greenhouse.
#5
A paver patio is like a floating wood floor, it's just sitting there on top of the leveled surface and is not anchored/attached.
There has to be some recommendations by the manufacture about how that thing should be anchored to the ground.
At a min I would have installed a decent sized footer below the pavers with some form of anchors to attach the greenhouse, or the course of block then installed the pavers around the foundation.
There has to be some recommendations by the manufacture about how that thing should be anchored to the ground.
At a min I would have installed a decent sized footer below the pavers with some form of anchors to attach the greenhouse, or the course of block then installed the pavers around the foundation.
#6
Well look what I found, the manual is in a dozen languages but I think the picture pretty much explains what is required.
https://www.doityourself.com/forum/a...1&d=1539680393
https://www.doityourself.com/forum/a...1&d=1539680393
#7
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And, without a footer how did/do you intend on anchoring your greenhouse? You can't anchor to a paver patio since the pavers themselves are not anchored.
#9
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You need the wall to allow for the entrance door height for the greenhouse shown. How about a greenhouse with a flat base? That said I would first address the problem of frost heaving. A structure like this, sitting on the ground, will distort from frost heaves making operation of the door and windows difficult. In my state, all footings must be a minimum depth of 4 feet below grade to prevent freezing water moving the footing. Check with the local building inspector for the depth. Then you can drill holes to the correct depth for cement piers (each corner and maybe more depending on how rigid the base is) with minimum demolition of the paver patio. The greenhouse base would sit on the cement piers. The other option I see is to remove the patio pavers and install a cement footing and wall. Good luck.
#10
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@beelzebob
I live in Bay area, CA where temperatures rarely get below freezing.
I like both ideas.. but seems like best option would be to dig a trench through the pavers to get to the required depth and pour a new footing.
I live in Bay area, CA where temperatures rarely get below freezing.
I like both ideas.. but seems like best option would be to dig a trench through the pavers to get to the required depth and pour a new footing.
#11
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It might actually be faster and cheaper to remove the paver patio, saving the pavers for reuse. After the footers are poured the foundation wall can be built. Then the paver patio re-installed.