In reality a compost heap usually ends up being a wormery towards the end
of
its cycle.
You would need a huge wormery to take all garden and kitchen waste.
Why not just use a sealed bin, with a few small holes in the base, as a
compost bin.
I have yet to see a domestic wormery that produces anything more than a
few
litres of useable stuff per month.



Make a solid sided compost bin from pallets pulled apart and using the 4 by
2 timbers for corner supoorts plus only half board the front .......add 2
uprights so that you have a gap to slot remaing half timbers in

Line the bin with heavy duty polythene stapled to timbers

Sit the bin on paving slabs 4 of 18 inch square reclaimed for the tip will
suffice

and make a solid lid also lined with heavy duty plastic

liberally paint the entire bin with "new creosote "

The secret of good compost is to get a good mix of ingredients which
includes shredded paper / cardboard horse poo if you can get it plus a few
buckets of night water as an activator

Rats do not bother to get in to a good bin and the worms will find their way
in through the gaps in paving slabs

alternatively a concrete coal bunker makes a good compost bin although the
theory you can just shovel good compost out of the hatch in the base is a
joke

Compost needs to be well mixed and turned several times in a year to make
fine crumbly peat like compost