Is is possible to build trench foundations in stages, or does it have
to be in one pour? For example, using a cement mixer, can it be done
over several days? Obviously the joins would be of concern.
Simon.

In article , 
sm_jamieson@hotmail.com says...

> Is is possible to build trench foundations in stages, or does it have
> to be in one pour? For example, using a cement mixer, can it be done
> over several days? Obviously the joins would be of concern.


No room for a few blokes with wheelbarrows to get mix from the truck to 
the site?

Rob Morley wrote:

> In article , 
> sm_jamieson@hotmail.com says...
> 
>>Is is possible to build trench foundations in stages, or does it have
>>to be in one pour? For example, using a cement mixer, can it be done
>>over several days? Obviously the joins would be of concern.
> 
> 
> No room for a few blokes with wheelbarrows to get mix from the truck to 
> the site?


Sounds a lot easier.

You can also get concrete pumped in on a boom/crane, the big ones can 
span a house. Not sure how pricey though.

Alex.

sm_jamieson@hotmail.com wrote:

> Is is possible to build trench foundations in stages, or does it have
> to be in one pour? For example, using a cement mixer, can it be done
> over several days? Obviously the joins would be of concern.
> Simon.


Not recommended matey due to foundation sink over the years, one block of
concrete could sink in the middle...any idea what would happen then? :-(

ben wrote:

> sm_jamieson@hotmail.com wrote:
> 
>>Is is possible to build trench foundations in stages, or does it have
>>to be in one pour? For example, using a cement mixer, can it be done
>>over several days? Obviously the joins would be of concern.
>>Simon.
> 
> 
> Not recommended matey due to foundation sink over the years, one block of
> concrete could sink in the middle...any idea what would happen then? :-(
> 
> 


Pour in layers and/or reinforce maybe?

Alex.

On 20 Sep 2005 09:18:07 -0700, sm_jamieson@hotmail.com wrote:


>Is is possible to build trench foundations in stages, or does it have
>to be in one pour? For example, using a cement mixer, can it be done
>over several days? Obviously the joins would be of concern.
>Simon.


Again probably a false economey, round my way ready mix is 60 quid a
cube, if you buy 6 cubes in one go. The materials alone won't be far
off this price, unless you buy direct from the quarry in 20 tonne
wagon loads.

I beleive you need a 200mm of steel mesh into each piece to be
considered a join, but you will need an engineer to confiorm this,
with will cost 100 quid alone.

Rick

sm_jamieson@hotmail.com wrote:


> Is is possible to build trench foundations in stages, or does it have
> to be in one pour? For example, using a cement mixer, can it be done
> over several days? Obviously the joins would be of concern.


	What dimensions?

	Regards
	Capitol

AlexW wrote:

> You can also get concrete pumped in on a boom/crane, the big ones can 
> span a house. Not sure how pricey though.


A concrete pump is very very pricey.

sm_jamieson@hotmail.com wrote:

> Is is possible to build trench foundations in stages, or does it have
> to be in one pour? For example, using a cement mixer, can it be done
> over several days? Obviously the joins would be of concern.


It can certainly be done in stages, time factors and the
(possible) use of retardant admixtures are important.
Call up Readymix or someone (even if you don't intend to
use them) and get some advice.

"AlexW"  wrote in message
news:43303d03$0$247$14726298@news.sunsite.dk...

> Rob Morley wrote:
> > In article ,
> > sm_jamieson@hotmail.com says...
> >
> >>Is is possible to build trench foundations in stages, or does it have
> >>to be in one pour? For example, using a cement mixer, can it be done
> >>over several days? Obviously the joins would be of concern.
> >
> >
> > No room for a few blokes with wheelbarrows to get mix from the truck to
> > the site?
>
> Sounds a lot easier.
>
> You can also get concrete pumped in on a boom/crane, the big ones can
> span a house. Not sure how pricey though.
>
> Alex.


The readymix I used came in a lorry that couldn't tip to the furthest
foundation trench ( 5metres from the closest), so I built myself a sturdy
chute, 3.5m long, with one end resting on a workmate, the other overhanging
the far trench. lorry could easily reach closest end of shute - worked like
a dream! Took about forty minutes, if I remember, from start to finish.

I would have been there forever mixing my conrete and it would have needed a
lot of reinforcement: 5m3 of pour.

Just remember, you will be lifting the equivalent weight of the trench at
least once over (filling the mixer) and more likely closer to twice over -
getting it where it would need to be and you'll have an inferior solution to
a single pour.

If you can possibly use readymix, I would. I was considering mixing the
concrete myself untill I realised how long it would take and the sheer
effort involved.

Paul

On 20 Sep 2005 09:18:07 -0700, a particular chimpanzee named
sm_jamieson@hotmail.com randomly hit the keyboard and produced:


>Is is possible to build trench foundations in stages, or does it have
>to be in one pour? For example, using a cement mixer, can it be done
>over several days? Obviously the joins would be of concern.


Make sure the joins are away from corners and changes in levels.  Put
12mm diameter reinforcing rods in the ends of your trenches to act as
a key for the next one, and scabble the surfaces of the exposed
concrete for a better key.
-- 
Hugo Nebula
  "If no-one on the internet wants a piece of this,
   just how far from the pack have you strayed?"

Paul Andrews wrote:


> If you can possibly use readymix, I would. I was considering mixing the
> concrete myself untill I realised how long it would take and the sheer
> effort involved.


Having recently laid a (very small) floor slab on my own using a mixer, 
I'd say "too right"!

Another potential solution if you have limited access to the site is to 
find a minimix-type supplier; there are Transit-sized flatback trucks 
around with little mixers on the back for delivering readimix

David