Sub base for a car park

[williams]

i have a job to quote, never done one like this as its got as its a shared driveway but is subject to more traffic than a normal job id say.

I,m not sure what to do with the sub base. I,m thinking 200mm type one (proper stuff not the crushed shit i,m fed up of hearing about) compacted in 2 layers with my diesel plate.

i plan to use 80mm blocks.

the ground is typical essex clay so rubbish.
i will put a geotextile membrane under the sub base to act as a seperation layer as i do for all my jobs.

does that sound ok?

no lorries are supposed to drive on it but you can never be sure.

[msh paving]

Sounds like a plan, 200mm sub-base should be fine
I'm not convinced about 80mm blocks as they are normally used on roads, a shared driveway would not cover the extra cost off the blocks MSH

[Dave_L]

200mm subase will be fine - that's what I'd spec.

60's will be fine on a residential driveway - tarmac would be ever better!

[lutonlagerlout]

80's ===> proper block paving
60's ===> ok light domestic use
50's====> hire a crusher,make some type 1

IMHO
:;):
LLL

[williams]

the 80's arent much dearer , about £3 per m iirc
i think i,ll give them the option.
its actually only about 250m2 but its quite long and 5 houses use it for access so could be subject to maybe 1 car every hour or so and i just can imagine skip lorries and delivery lorries using it.

[lutonlagerlout]

20-odd years ago all block paving was thick( as i remember through the mists of time) i am sure the first couple of jobs we did were in 90's or 100mm blocks
and we were told to use 50mm scaffold poles as screed bars
LLL

[Suggers]

and the idea of something like this being "flexible" was just starting to seep through... or wos it a bit earlier?

[lutonlagerlout]

we were told by a *rep* that it was that strong ,that once laid all the sand could be taken out from underneath it and a lorry could still drive over it
:O :O :O
those were the days,stone cladding, chessboard patios and reps telling porkies
LLL

[Pablo]

we were told by a *rep* that it was that strong ,that once laid all the sand could be taken out from underneath it and a lorry could still drive over it

A job we did a few years ago involved extending and fixing an existing 60mm drive. Part of it was unrestrained and the sand had migrated leaving an area approx 5m2 floating on air. We didn't realise this and were driving over it with diggers and dumpers all week and it never moved. Both machines were 3 tonners.

[lutonlagerlout]

i could imagine it happening on odd very local occasions, but this drive was 2000m2,mind you we used road kerbs in those halycon days and a bench saw

LLL