Browse Forums Building A New House 1 Jul 23, 2013 8:51 pm Hi all, The distance to our boundary is 1.5m. The drop off from our slab to that boundary is well, somewhere around or over 50cm. What can we do? Is it safe to put in a retaining wall that high right against the fence when the neighbour has a retaining wall to the natural slope of the land 20cm inside his boundary? Do we concrete for 1 meter and then fill the next 40cm or so with stones? What do we do about drainage on that kind of slope - this is apparently the natural slope of the land. So we would have (their) retaining wall, +- 15cm to the Fence, then +- 10cm to a second retaining wall. Would that work? Can you put two retaining walls so close together? Is there an alternative to a retaining wall? Like... maybe a stepped concrete apron dropping down bit by bit over the 1m? So like 10cm across and then 10cm down? Open to ideas. -G Re: Concrete Apron on Angled Slope 2Jul 23, 2013 9:35 pm What about a 1m concrete apron and then the retaining wall at that point, and a sunken garden bed/pebbles for the last 50cm? Build thread: viewtopic.php?f=31&t=65085 Re: Concrete Apron on Angled Slope 3Jul 23, 2013 10:37 pm EmyN What about a 1m concrete apron and then the retaining wall at that point, and a sunken garden bed/pebbles for the last 50cm? The problem with that is that the fill (material between retaining wall and fence) will push against the fence. I've seen countless fences on the side of the road where stones have warped and bent plinths out and spilled onto the sidewalk. I don't want that happening into my neighbour's yard. Thanks though. -G Re: Concrete Apron on Angled Slope 4Jul 24, 2013 6:58 am I don't think you understand what I mean. It would be flat ground from the retaining wall to the fence. There would be two levels. One flat 1m concrete apron and then a retaining wall of 50cm height dropping the ground level down. Then flat again to the fence. Build thread: viewtopic.php?f=31&t=65085 Re: Concrete Apron on Angled Slope 5Jul 24, 2013 2:04 pm Can you do without the concrete apron, or do you think you really need it? Maybe you can do some 1:10 or even 1:20 fall away from the slab for about just over 1m and then simply "retain" the rest of the height (some 40 to 30 cm) with heavy retaining wall blocks (might need 2 rows) and fill them with blue metal. The blocks would end some 10-20cm away from the fence (this depends on the thickness/depth of the blocks used), so you still have access and room to move in case of need and maintenance. And you can use the surface/top of the blocks to walk on them etc., making your side path wider and easier to use. Or you can even concrete in some besser blocks, they won't be seen anyway?? And thanks to the good fall, I think the "apron" can be compacted roadbase instead of concrete. But there is nothing wrong with concrete, only in that case I would make the fall only 1:5 max, so you don't slip on it, but the wall would be a bit taller. My signature is distracting people from my wise posts ... Re: Concrete Apron on Angled Slope 6Jul 24, 2013 2:45 pm Can you throw up your siteplan? May be easier to put all the pieces together! You are correct. Just read through all the ncc rules and 75mm is the minimum requirement for me. 4 11185 A survey must’ve completed by a certified surveyor. This form part of every DA requirement 3 223851 Need advice on the backyard plan above. Should I excavate and cut all of the dirt to level with the house slab or semi-excavate as per photo above? Both left and right… 0 24908 |