Substation Rock Wheel Traction
Substation Rock Wheel Traction
(OP)
Our substation rock is sized 3/4 to 1-1/2 (years ago it was larger) and some of the heavier utility trucks have a tendency to sink their wheels into the rock making traction difficult. Our normal depth is between 4 and 5 inched. Any ideas or suggestions?






RE: Substation Rock Wheel Traction
RE: Substation Rock Wheel Traction
RE: Substation Rock Wheel Traction
To PHovnanian- using smaller rock will make the void spaces smaller and the resistivity will go down. If anything, making it larger, but with sharper spall edges might, might work. therefore...
New Question: What are typical rock spalls that others are using that stabilize while driving over them with a heavy truck such as a boom truck? Larger sizes than 1-1/2? Rock spall specification (if such a thing exists)? Who determines rock spall size and its resistivity?
RE: Substation Rock Wheel Traction
We have since been using a different rock mix.
On another sub, we just used aspault, for grounding issues, and hence no geting stuck.
RE: Substation Rock Wheel Traction
1 ¼ Inch minus, 100% fractured, uniformly Railroad Ballast
At one of our substations the crew used a vibratory roller/compactor on the whole yard after spreading yard rock. The roller seemed to lock the rocks in place quite well.
RE: Substation Rock Wheel Traction
To bacon4life- We will certainly look into what "fractured rock" is vs spalls. How do you determine a value for resistivity for this stuff? Thanks.
RE: Substation Rock Wheel Traction