Cleaning Up for More Shotcrete

There was lots to clean up after a very successful day yesterday.

Rain Showers Throughout the Day

We need to state that rain showers occured throughout the day today.  Yesterday was a bit windy, but dry.  The window for shotcrete was narrow and we managed to squeeze through it successfully. 

We’re still smiling after enjoying clear weather yesterday.

Removing the Shotcrete Spoils

When shooting shotcrete on vertical walls, there are spoils as the shotcrete needs to be ‘carved’ in a vertical manner.  Apparently, these spoils can range from 15 to 20% by volume.  Not very ‘green’ to truck away spoils.

The conveyor helped to remove the concrete quickly today.

The conveyor helped to remove the concrete quickly today.

Logistically, we had 90 yards of concrete so 10% spoils is a significant amount.  Bill Brown’s team removed as much by hand as possible and then brought a conveyor in today.  This accelerated the clean up dramatically.

Finished Walls

The walls look great!  The structure is starting to emerge from the hole, rising up under the existing walls exactly as planned.  Our conduit and sleeves are now embedded in the concrete so the project is progressing nicely.

South-east concrete walls in place under the existing structure.  Note shotcrete spoils in foreground.

South-east concrete walls in place under the existing structure. Note shotcrete spoils in foreground.

 

South-west corner, showing the window well with pocket for steel beam and also reinforcing steel for concrete wall under the beam.

South-west corner, showing the window well with pocket for steel beam and also reinforcing steel for concrete wall under the beam.

Next Steps

Our plan is to complete the remaining vertical concrete walls in the lower level on Wednesday, April 15 so we can start backfilling.  After the backfilling is complete, we can bring a crane in to place the steel columns and beams.  Then, our hollow core concrete panels can be placed on those steel beams and our concrete retaining walls.

It is coming together!

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