Archive for December 31st, 2009

Installing Our CUDO Cistern – Day 2

Thursday, December 31st, 2009

We completed installing our CUDO cistern by 2:30 pm today.  The pile of dirt is covered and we’re ready to celebrate the arrival of 2010!

Completing the System

We needed the material to complete wrapping the exterior of the CUDO frames and that was being shipped from Los Angeles via UPS.  Gary Jones was on site first thing in the morning, preparing the folds in the material so the last piece would fit on perfectly when delivered.

After the material arrived, Doug Allard wrapped the three CUDO frames that sit on top of the cistern (for the inlet, irrigation pump, and outlet).  These three frames, once wrapped, will sit on the other 64 frames making up the cistern.

Once Gary and Doug were finished, the system then was put together.  We sealed the joints with the prescribed tape and our Graniterock mix arrived.

We ordered a one-sack mix of controlled density fill (CDF) with a four-inch slump.  This mix goes around the perimeter of the CUDO system – between the membrane material and the earth.  Using the CDF allowed us to avoid compacting the earth with a jumping jack and reduced the amount of soil we had to remove.  We ordered 4.0 cubic yards of CDF and used the remainder on top of the CUDO cistern.

As we put the CDF in, we went around the perimeter several times, filling the void partially on each pass.  This was so the pressure would be even and not push the CUDO frames to one side without it being anchored in place.

Once the CDF was around the entire perimeter, the remainder went on the top.  Then, Jose, in the excavator, started sprinkling some soil on the top until we had a layer of approximately 6 inches.  Then, we used shovels and a vibra-plate compactor to spread the soil and compact the dirt evenly over the CUDO cistern.  Then, Jose spread more soil in six inch lifts and we continued compacting.

When we reached the top of the three CUDO frames on top of the cistern, we removed the circular covers and used caulking to put the vertical pipes that will go to the surface.  Jose spread more dirt in six-inch lifts and we continued compacting with the vibra-plate compactor.

Done!  Our underground cistern is in place.

Cleaning Up

The Kristar team left and Jose continued to clean up the site with the excavator.  The moved the remaining dirt into a neat pile so it can be used to backfill the remaining voids at the front of the house and will be easily accessible with a Bobcat.  Also, he moved the stump to the front of the yard so it can be removed.

We’re ready to celebrate the arrival of 2010 – cheers!

Gary completing the wrapping of the top of the CUDO system.  These are the two layers of 4x8 CUDO frames that will hold the water that we will irrigate our landscaping with.

Gary completing the wrapping of the top of the CUDO system. These are the two layers of 4x8 CUDO frames that will hold the water that we will irrigate our landscaping with.

Gary is taping one of the three wrapped CUDO frames that sits on top of the main CUDO cistern.  This frame is for the pump that will provide the water to irrigate our landscaping.

Gary is taping one of the three wrapped CUDO frames that sits on top of the main CUDO cistern. This frame is for the pump that will provide the water to irrigate our landscaping.

A completed CUDO frame - taped and ready to be covered.

A completed CUDO frame - taped and ready to be covered.

The inlet (right) and pump (left) CUDO frames are on top of the CUDO cistern.  We're ready for the controlled density fill (CDF).  The CDF will fill the void between the CUDO frame and the earth.

The inlet (right) and pump (left) CUDO frames are on top of the CUDO cistern. We're ready for the controlled density fill (CDF). The CDF will fill the void between the CUDO frame and the earth.

 

Our 4 yards of CDF (Controlled Density Fill) arrived and Jose stopped the excavator to supevise the pour.

Our 4 yards of CDF (Controlled Density Fill) arrived and Jose (right) stopped the excavator to supevise the pour.

Starting to pour the CDF around the perimeter of the wrapped CUDO frames.

Starting to pour the CDF around the perimeter of the wrapped CUDO frames.

Carlos Torres directed the pour while Bryan (left) and Manuel (right) ensured the CDF dropped down into the void between the CUDO and the soil.

Carlos Torres directed the pour while Bryan (left) and Manuel (right) ensured the CDF dropped down into the void between the CUDO and the soil.

The CDF was a one-sack mix of cement and sand, with a four-inch slump.  There was no aggregate (rocks) in the CDF.

The CDF was a one-sack mix of cement and sand, with a four-inch slump. There was no aggregate (rocks) in the CDF.

Bryan is using a piece of rebar to ensure there are no air pockets in the CDF.

Bryan is using a piece of rebar to ensure there are no air pockets in the CDF.

We ordered enough material to cover the entire CUDO system with three inches of CDF.

We ordered enough material to cover the entire CUDO system with three inches of CDF.

CDF covers the CUDO system - now we use the original soil as backfill over the excavation to bring it to grade.

CDF covers the CUDO system - now we use the original soil as backfill over the excavation to bring it to grade.

We used six-inch lifts of soil and then a vibra-plate to compact the soil.

We used six-inch lifts of soil and then a vibra-plate to compact the soil.

Jose, operating the excavator, deftly distributed soil over the excavation in six-inch lifts.  With a 1-3/4 yard bucket and Jose's expertise, this went fast.

Jose, operating the excavator, deftly distributed soil over the excavation in six-inch lifts. With a 1-3/4 yard bucket and Jose's expertise, this went quickly.

 

Jose had sufficient reach to distribute soil over the entire CUDO system.

Jose had sufficient reach to distribute soil over the entire CUDO system.

After bringing the soil to the top of the three CUDO frames, we removed the covers so we could attach extensions to bring the soil to grade.

After bringing the soil to the top of the three CUDO frames, we removed the covers so we could attach extensions to bring the soil to grade.

Gary used caulking to seal the joint to the CUDO frame.

Gary uses caulking to seal the joint to the CUDO frame.

We're done!  The extension on the left is where the inlet (supply) pipes will be located; the extension on the right is for the irrigation pump.

We're done! The extension on the left is where the inlet (supply) pipes will be located; the extension on the right is for the irrigation pump.

Looking South (towards Via Sereno) - the third extension is where the overflow outlets will be located that will take water in a six-inch pipe under the sidewalk to the back of the storm drain on Winchester Boulevard.

Looking South (towards Via Sereno) - the third extension is where the overflow outlets will be located that will take water in a six-inch pipe under the sidewalk to the back of the storm drain on Winchester Boulevard.