The drive will require digging out to a depth
of 150 to 200mm below finished level. when digging out try
to shave off the top levels if possible rather than pushing
the spade into the ground, that way you will not disturb the
sub base.
If you have to push the spade into the ground, then do not
go too deep for the above reason.
With luck and of course depending on your type of soil, you
will finish up with a nice flat surface undisturbed by digging
the length and width of the proposed drive.
You could at this point hire a whacker plate which is a machine
hired out from your local hire shop which has a flat vibrating
base driven by a small petrol engine. You could be looking
at around £30.00 per day.
I don't know what you intend to lay as a curb edgeing, but
I would consider having one of some sort other wise you will
end up with your loose gravel finish all over the rest of
the adjacent garden.
Having got the excavating done, Yellow pages should find
you a builders merchants such as Jewsons or Builders centre
which are prety well nationwide.
Most will do a next day delivery and for the quantities you
are going to require the delivery will be free.
The limestone chippings grade you require is colloquialy
known as crush and run, this is 25mm to dust generally.
It is sold by the tonne, which is what the large white bags
hold. The cost will be around £30.00 per tonne. Don't
forget though when they are quoting you the prices will probably
without vat unles you ask for with vat pricese.
Around where I live in South Yorkshire, the white bags are
not on deposit any more and they become your property, but
of course they are not free, the price is lost in the cost
of the goods.
In theory, you get 10 sq. mtr of hard core per tonne at 100mm
thick, but it is better to work on eight sq/tonne.
If when you have worked out how many tonnes you require,
you start to shop around, and believe me, it is worh shopping
around, ask for the price of a loose delivery.
You will find this is much cheaper and you will probably
get more for your tonne than the equivalent number of bags.
The cheapnes is of course because you are not buying the very
nice white bags.
Use a line stretched between garage and road to lay your
curbing straight and at the correct finnished height. You
might find it easier if you purchase some rough wood 50*25mm
approx,. and cut into 450mm lengths with a rough sawn point
on one end. Along the length of the line, knock into the ground
the prepared stakes so that they finnish with there tops at
the taught line level and obviously in line with the line
at both sides of the drive.
Across the width of the drive knock in further stakes to
finish at the correct level with the side stakes. Get youself
a straight piece of wood that will not bow when unsupported,
say 100mm* 50mm. preferably the width of the drive or at least
a couple of metres long. This with a spirit level will allow
you to strike off from the side stakes across the drive and
check
the levels of the intermediate stakes as you proceed.
When your hardcore arrives, if you have gone the bag route,
ask the driver to use his hydraulic lifting arm to position
each bag and the with a stanly knife slice through the bottom
of the bag and let the hardcore spill out. In this way you
will save yourself the chore of hand digging the hard core
out of the several bags and barrowing into place along the
drive.
If you have gone the cheaper loose fill route, you could
ask the driver to tip onto the excavated drive but it will
certainly over spill onto the adjacent garden and it will
also be harder to shovel it up into a barrow off the soft
earth, and you will have flattened some of your guide stakes
in the process.
The road/causeway is a better bet if possible as this allows
you to see how much you are laying and can adjust the infill
height if you start a bit thin and realise you are going to
have some left over, and if you have a bit too much, a negotiation
with a neighbour could be made and again it's easier to barrow
away from a hard surface than off the top of partly laid hardcore.
Either way you will need to barrow and rake out the loose
hard core till it is equidistant up each stake. Once you are
satisfied that the hardcore is laid equally along the length
and width of the drive the stakes can be pulled out or if
this proves difficult, knocked down to hard core level, there
job done.
At this point the whacker plate comes into it own, this is
noisy but quite theraputic, Ha Ha.
Over the compacted hardcore, lay some of the garden weed
supressant cloth making sure that the sedges overlap each
other. Some plain 100 or 150mm round headed nails can be driven
through at intervals to hold the material in place.
You now have the choice of new gravel or the recoverd gravel
from the rear. The recovered gravel is a temptation, but it
will almost certainly be contaminated by soil. If you are
going to reuse it, then it realy wants passing over a fine
mesh grill that will allow the soil through and retain the
gravel. This is a long slow proces, but if you don't do this,
you will have weeds growing in no time. The new gravel can
be bought from the same builders merchants as the hard core
with the same proviso's as to price and delivery method applying.
Quantities would be 20mtr sq, per tonne/bag. for 50mm depth
approx.
The gravel wants to be about 50mm deep to give you a nice
rakeable surface that can be kept in trim.
Hope that helps.

I would suggest as an excellent read the
site www.pavingexpert.com
which will tell you everything you need to know about building
any drive or path from any material from preparation to completion.
If you are going to be ordering a lot of stuff from a builders
merchant it may be worth opening an account as then the delivery
charges are waived (normally £10 a load).
When I was ordering stuff for my garage/drive unless you
got into the big multi-tonne loads which I had a couple off
it was often cheaper buy bulk bag as the big loads often had
a part load charge if you didn't fill the wagon (Bearing in
mind I had free delivery for the bulk bags as I opened accounts
with Jewsons and Travis Perkins). Get quotes is the answer.
For the base as mentioned you need Type 1, also known as MOT1,
Scalpings, Quarry waste or "inch to dust" so try
these names if type 1 draws a blank from the salesman!
With regard to the bulk bags the ubiquitous Health and Safety
has of course got there and bags are not allowed to be re-used
any more so they are worthless, there is no deposit to pay
any more. You will often find a gardening neighbour who may
want one to put his lawn clippings in. If anyone wants any
from around the Derby/Leicester area I have a collection available
free of charge.
Also, something which I nearly got caught out on and may
depend on your local council as I was going to gravel some
of the drive at the front and then have hard standing next
to the house is that Leicestershire council won't allow you
to have gravel right up to the pavement as the car will pull
gravel onto the road/pavement and this isn't allowed. Their
needs to be a paved area on your land before you reach the
pavement. In then end I dispensed with any gravel and am in
the process of laying block paving on the whole drive.
