Replies

Full disclosure I am not an engineer just somebody who has built a few brick patios, sidewalks and about a dozen retaining walls and flower boxes using landscaping wall blocks.

IF you can get AB3 in your area consider using that.

AB3 is 3/4” gravel down to dust and will compact to an almost concrete like surface if you use a plate compacter.

I don’t know how big of a track you are wanting to build but as a quick rule of thumb 3” thick AB3 gravel will make a length about 30’ long by about 2’ wide.

You can find calculators on-line to get a better idea of how much gravel you would need

I have used this for parking spots for some vehicles and the footings for retaining walls and brick sidewalks and patios.

The key to compacting in my opinion is to compact about 1/2” to 3/4 lifts at a time. A light misting will help it to compact and also help to hold down the dust.

It is easy to repair if you have a wash out due to a big rain event. just fill in the washout and re tamp or compact if it is a really big washout.

one other idea That just popped in would be to lay out the track and spread some 1/2’ or smaller gravel down maybe 1/2’ thick or so then either run a plate compacter over it or try riding around the course a few times to see if the bike will compact it. This would probably require several applications of gravel as well as an annual application in the spring I would guess.

Hopefully this will give you some ideas for thought.

Regards

alfa6 ;>}