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Posted: Tue Feb 12, 2013 11:17 am
by JMC Landscapes
A client has asked us to replace a 6 ft fence panel with a 6ft rendered wall. It will be free standing so I'm thinking should be reinforced somehow. It can't have piers as he wants it to be a clean block. His little kids will be using to kick a ball against.
I'm thinking 9 inch hollow blocks with rebar or scaffold tubes going down into the footings?
What do you reckon?
Any better / easier way?
Cheers,
John
Posted: Tue Feb 12, 2013 6:54 pm
by lutonlagerlout
surely it would be easier just to build in 9 inch H blocks and paint it?
the render is going to take a pasting off kids
obviously rebar in the footing which ideally would be a slab type 900 wide by 300 deep
cheers LLL
Posted: Fri Feb 15, 2013 6:43 pm
by JMC Landscapes
Thanks For this LLL.
You're probably right about the render but I know what he's like. He'll want to do it anyway.
What's the calculation to make it a 900mm wide slab?
Posted: Fri Feb 15, 2013 7:35 pm
by TheRockConcreting
JMC Landscapes wrote:What's the calculation to make it a 900mm wide slab?
Your gonna need to get your algebra head on to work that out.
Posted: Fri Feb 15, 2013 8:03 pm
by lutonlagerlout
I am no structural engineer
but I have dealt with loads (geddit?)
if the wall is fixed into the foundation via rebar , what you do not want is rotation
the wall is unlikely to sink downwards but a wall that high even at 215 can be pushed over by lateral force
so a wide slab gives an upside down T making the whole thing less likely to go
love to see the render after 9000 penalty kicks :;):
LLL
Posted: Sat Feb 16, 2013 2:53 pm
by JMC Landscapes
Ok Cheers, I'm with it now.
I Knew the slab should be wide but not that wide. Problem with it is, and this is a common problem with wall foundations in my experience is that doing this we'll have to undermine his paving and go into the neighbour's garden by a fair distance.
With structural concerns and render worries I think I may tell him to think of a plan B 
Posted: Sat Feb 16, 2013 5:19 pm
by TheRockConcreting
JMC Landscapes wrote:problem with wall foundations in my experience is that doing this we'll have to undermine his paving and go into the neighbour's garden by a fair distance.
The footing can also be straight down but i dunno what the spec would be for your 6ft wall. Last wall that i built that was tight on room had a footing the same depth as height 4ft, i'm sure that is going to be different for a 6ft wall, but by how much ?
Posted: Sat Feb 16, 2013 10:19 pm
by dales
could you build a 9" pier on one side of wall would help
Posted: Wed Feb 27, 2013 9:47 pm
by JMC Landscapes
niall - the client doesn't want any piers, he wants a flat block. I suppose it could go on the back though.
Jay - Are you saying your footing was 4ft deep? that's full on
Posted: Fri Mar 01, 2013 9:09 am
by TheRockConcreting
JMC Landscapes wrote:Jay - Are you saying your footing was 4ft deep? that's full on
Yes i forgot to say it was a retaining wall.