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Yes I was not thinking about rock slopes when I made the sketch and I agree with you about the fact that the step might make rocks bounce high.

Thank you for the explanation, makes perfectly sense :)

Hello I come with a simple question... I have seen a few times slopes being developed in 2 or more levels, between a short horizontal length appearing. Maybe someone can explain me the purpose of this? Many times it can be used for road or rail embankments. Why can't just one single slope be...

I checked your spreadsheets and they are really interesting, but I don't have much experience with laterally loaded piles because I'm a student they are not teaching this (hopefully later at MSc.). Can you tell me what literature should I use to understand this better and what are the used...

Yeah the way I learned to do it is based on the ACI "model" but there was nothing involving void ratio or anything in that from what I recall and once you obtain the quantities you could basically create the mix. As for the specific gravity... isn't that defined as the ratio between the density...

Ok it makes sense... I suspected it has something to do with that. How did you get the specific gravity 2.65? It means you considered a density of aggregates of 2650 kg/m3. Why is that? I checked some older spreadsheet I have from my courses and I saw that we used similar values for that but...

what I mean is that in practice when engineers don't have scales on the field use more aggregates in order to obtain a cubic meter of concrete. Maybe this image helps http://www.ppc.co.za/media/21174/Concrete-p1-06.png - if you sum up the sand and gravel you will get more than 1 m3.

Hello I would like to ask what is the reason that in practice, when someone is making concrete manually (not from the concrete plant) and wants to make let's say 1 m3 concrete it is required to use more aggregates that when summed up would give 1,2 - 1,4 m3 alone. I'm a student and in the lab...