ᐅ Double wire mesh fence with privacy screen mounted on L-shaped concrete blocks—feasible?
Created on: 1 Aug 2023 12:09
H
Hausbauer2021
Good morning,
I have already read several threads on this topic, but every case is a bit different. As the headline says, I want to install a 1.8m (6 feet) fence with privacy screening on L-shaped concrete blocks. For this, I ordered various brackets (L-shaped with 12.5mm (0.5 inch) elongated holes) that are specifically designed for this purpose. Now, after reading other threads, I’m a bit concerned about the wind load. Originally, I planned to fix the brackets with 10mm (0.4 inch) heavy-duty anchors and also glue them in. Our L-blocks are 12cm (5 inches) thick and have been cast in concrete. I assume they should be strong enough. After what I’ve read, I would now use 12mm (0.5 inch) heavy-duty anchors. In addition, I would use two rows of a slightly wind-permeable privacy screen. Is this plan still too risky or feasible? The fence will be attached not only to the L-blocks but also extend a bit further. Would it help if I set posts every 1.25m (4 feet) instead of every 2.5m (8 feet) and cut the panels to fit?
Attached is a picture of the situation.
Thank you very much.
I have already read several threads on this topic, but every case is a bit different. As the headline says, I want to install a 1.8m (6 feet) fence with privacy screening on L-shaped concrete blocks. For this, I ordered various brackets (L-shaped with 12.5mm (0.5 inch) elongated holes) that are specifically designed for this purpose. Now, after reading other threads, I’m a bit concerned about the wind load. Originally, I planned to fix the brackets with 10mm (0.4 inch) heavy-duty anchors and also glue them in. Our L-blocks are 12cm (5 inches) thick and have been cast in concrete. I assume they should be strong enough. After what I’ve read, I would now use 12mm (0.5 inch) heavy-duty anchors. In addition, I would use two rows of a slightly wind-permeable privacy screen. Is this plan still too risky or feasible? The fence will be attached not only to the L-blocks but also extend a bit further. Would it help if I set posts every 1.25m (4 feet) instead of every 2.5m (8 feet) and cut the panels to fit?
Attached is a picture of the situation.
Thank you very much.
I used 10 mm (0.4 inch) Fischer anchor bolts and had insufficient edge distance (>5 cm (2 inches)) when installing the L-shaped concrete blocks for my bike shed, which caused them to crack.
There is a privacy screen that is wind-permeable!
Regarding the permissibility, everything has already been said (fence in the wrong place > visibility obstruction at street intersection -> accident -> shared liability).
There is a privacy screen that is wind-permeable!
Regarding the permissibility, everything has already been said (fence in the wrong place > visibility obstruction at street intersection -> accident -> shared liability).
H
Hausbauer20213 Aug 2023 13:59i_b_n_a_n schrieb:
I cracked the L-shaped concrete blocks when mounting my bike shelter using 10mm (0.4 inch) Fischer anchors with insufficient edge distance (>5cm (2 inches)).
There are privacy screens that allow wind to pass through!
Regarding legality, everything has already been said (fence in the wrong place > impaired visibility at road intersection -> accident -> shared liability) I agree with you on the load and will use concrete. Attached is a picture of the situation. The garden is manageable, so I would prefer not to relocate the fence elsewhere. However, I am open to suggestions. If I plant a hedge on the boundary, visibility will also be restricted.
How far is the L-shaped retaining wall from the property boundary to the street?
I see the following problem:
There is no space for a proper foundation in front of the L-shaped blocks. Even if you ignore the boundary underground, as you mentioned, at the “high end” you need a 4m (13 feet) post. That post will also have significant leverage, and strictly speaking, you would then need an even larger foundation or possibly the post might not be thick enough.
That’s why I suggest placing the anchors behind the L-shaped blocks and casting them in concrete. At the “high end,” you can normally go 80cm (31.5 inches) deep (and theoretically also embed the posts in concrete there). Later, you can make it shallower but longer and wider. At the front, you could even remove the L-shaped blocks and pour a deep foundation underneath, then connect everything with long screw anchors (glued in).
That would be the very secure option for the cautious.
I would probably just screw the last posts onto shallower concrete bases (alternatively concrete blocks). Those would weigh around 100-150kg (220-330 lbs).
If the rest of the fence is properly founded, it will hold because it is connected.
I see the following problem:
There is no space for a proper foundation in front of the L-shaped blocks. Even if you ignore the boundary underground, as you mentioned, at the “high end” you need a 4m (13 feet) post. That post will also have significant leverage, and strictly speaking, you would then need an even larger foundation or possibly the post might not be thick enough.
That’s why I suggest placing the anchors behind the L-shaped blocks and casting them in concrete. At the “high end,” you can normally go 80cm (31.5 inches) deep (and theoretically also embed the posts in concrete there). Later, you can make it shallower but longer and wider. At the front, you could even remove the L-shaped blocks and pour a deep foundation underneath, then connect everything with long screw anchors (glued in).
That would be the very secure option for the cautious.
I would probably just screw the last posts onto shallower concrete bases (alternatively concrete blocks). Those would weigh around 100-150kg (220-330 lbs).
If the rest of the fence is properly founded, it will hold because it is connected.
H
Hausbauer20213 Aug 2023 14:29haydee schrieb:
Do you want to look out from your terrace onto double steel mesh panels with plastic strips? How do you feel about having your garden surrounded by a high fence?
It blocks all views. No one can see inside, and you can’t see outside.
That’s something you have to like as well. Inside, everything will be greened 🙂 Of course, nobody wants to look at a plastic wall, but until the greenery grows tall enough, we can live with it.
W
WilderSueden3 Aug 2023 14:59Why not just start with climbing plants right away, without the privacy screen?
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