Sunday, September 7, 2008

September 7, 2008

This piece of equipment (a clam shell bucket crane) arrived on the work site about 2 weeks ago. I believe that it will be used for the deep excavation of the slurry walls, which will make up the outside edges of the 2nd Avenue TBM (tunnel boring machine) launch box.

Also, a second rotary drilling rig (a Bauer BG 28) arrived on the work site about 2 weeks ago -- so now there are 2 drilling rigs, working between 92nd and 93rd on the west side of the avenue, starting at 7 AM M-F.

These long steel beams were placed into the drilled secant pile shafts and the shafts have now been filled with concrete.

These metal forms are used to construct a sort of "guide shaft" that is used when the rotary drilling rig drills out each hole for the secant piles. Concrete is poured around the form,and then when the form is removed, there is a set of 5 large circular holes that provide a sort of guide for the drilling equipment.

This odd looking piece of equipment, which sort of looks like the Apollo Lunar Module, I believe is used to measure the depth of the drilled secant pile shafts. The piece at the end of the spool of cable is metal weight.

A closer look.

Various parts and pieces for one of the cranes.

Rigging for one of the cranes.

I'm not sure what this is.
I looks, to me, like a fox (or a small dog?) that was cut out of a piece of corrugated steel and then painted orange.

This very long trailer, with reinforced steel cage for the slurry wall trenches, is parked between 95th and 96th, on the west side of 2nd Avenue.

And I noticed that this new poster is now hanging in many of the store fronts in the construction zone.