Max grade for heavy load on aggregate surface
Max grade for heavy load on aggregate surface
(OP)
I am working on a project outside of the US that will bring a 30 ton load on a tractor trailer up a mountainous area. There is a section where the existing grade is 19% for a distance of 75'. We were thinking of knocking the slope down by bringing in fill (excavating is not an option because of hard rock and equipment that can not remove it). We can make it 12% for 360'. Is 12% still too high? Is 19% for a distance of 75' an issue that needs to be corrected? Any help would be much appreciated. Thanks!





RE: Max grade for heavy load on aggregate surface
RE: Max grade for heavy load on aggregate surface
RE: Max grade for heavy load on aggregate surface
RE: Max grade for heavy load on aggregate surface
RE: Max grade for heavy load on aggregate surface
RE: Max grade for heavy load on aggregate surface
Not sure of the length of the vehicle you are using, but if typical tractor-trailer, it will be about 55 to 60 feet long. Could be a real problem with transition slopes as well.
RE: Max grade for heavy load on aggregate surface
RE: Max grade for heavy load on aggregate surface
I would suggest you talk to the trucking company and get a crawler tractor for assist, even if you change the grade.