sketches and anticdotes about my interests and travels
Friday, 14 December 2012
We started removing rock on the Stirling Avenue project Wednesday. It is limestone and breaks fairly easily where it is weathered near the surface, but is much harder below about 60 cm. down. John McRae is the excavation contractor and he has to really 'put his sholder into it' using the wieght of the machine to force the bit down into the rock which lifts the front of the tracks right off the surface. He handles that machine like a surgical tool. I think if we taped a pen to the end of the hoe-ram he could sign his name.
We're not going down to a full basement, just for frost cover so we should be ready for forming foundations next week.