Fencing on top of sleeper wall

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I've read the other sleeper threads on here and, given my site intall have settled on using i-beams and horizontal 3m "tall" sleepers, similar to this thread:

https://www.diynot.com/diy/threads/retaining-wall-questions-sleeper-design.502344/#post-4144197

My new next door neighbour is very kindly allowing me to move a ~50 year old boundary (despite the deeds being in my favour) by about a foot.

Thus it is very important that the aesthetics are correct as he is the "downhill" property. Currently the wall is just dirt with a few paving slabs and definitely needs some kind of retaining as many of the paving stones are trying to escape from my garden into his.

I would like to use some premium Forest panels to replace the existing concrete post, arris rail and featherdge boards.

My question is how do i successfully join 6' fence posts to the top of the new sleeper wall (I dont want to extend the i-beams above this level.

This is a 9m run so I need four i-beams, many 3m sleepers. five fence panels and six fence posts. If all goes to plan the the end fence posts of the fence run will sit neatly atop the end i-beams and the four other posts will sit on sleepers.

The only thing I am unsure of is whether these...

https://www.screwfix.com/p/sabrefix...ADilZZs4v5Xidgpfn4hoC77wQAvD_BwE&gclsrc=aw.ds

..will be sufficient to hold a 6' panel on the sleeper walls. I am much more confident of these...

https://www.e-hardware.co.uk/268-p-...rbuCn_SwPtONVkDZsVZml-debNTPvWrRoCB0gQAvD_BwE

...as they will be bolted through the end i-beams

Any advice/reassurance or alternative suggestions welcomed

Regards

Tet
 
The wind load on forest panels would IMO be too much.

I would run your fence posts down in front of the I beams and bolt them to the I beams.

Then fix you fence panels behind so they sit on top of the sleepers.
 
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