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Pool Excavation: 4 Questions You May Not Think to Ask!

  
  
  

pool excavation

One of our goals with this blog is to nullify what we refer to as the “curse of knowledge” throughout the swimming pool industry.  Pool professionals, and all professionals for that matter, often forget that the common customer lacks the depth of knowledge that they have taken years to acquire.  What results is a breakdown in communication regarding products, services, construction processes, and an overall misconception of what exactly will happens in the backyard. 

I’m certainly not immune to this, as I certainly make the same mistake from time to time with my clients.  So the purpose of this article is to discuss one of the most common pool construction processes that fall under the dreaded “curse of knowledge”:  Swimming Pool Excavation. 

Here are 4 Questions You May Not think to Ask about Pool Excavation:

1.  What if You Hit Rock or Water When You Dig?

Your backyard is like a box of chocolates.  Without a soils test (which 999 of 1000 customers don’t get), pool contractors never really know what they’ll hit when digging in your backyard.  Frankly, none of this really matters to you unless one of two things happen:  your soil condition compromises the structural integrity of your pool, or it costs you more money to install the pool.  The structural component will have to be determined by your pool contractor and is beyond the scope of this article.  However, from a budget perspective, there two primary things a contractor may find when excavating that could result in an unforeseen cost to you:  rock and water.

Options when hitting rock:

1.  Move the pool to an area with less rock:  This one is guess work.  Just start digging some test holes and hope for the best.

2.  Elevate the pool and keep it in the same location:  Work with what you have.  There could be extra cost associated with the elevation change (walls, additional fill dirt, etc.)

3.  Hammer or blast the rock out and install the pool in the original location: minimum cost of $2k just for the hammer rental plus any additional labor the contractor may charge. 

4.  Fill the hole in, pay the contractor for his time, and install a pool at your next houseJ

*Note: We may encounter rock in approximately one in every fifty pools we install.  If any contractor with more experience with rock would like to chime in, please feel free to contribute in the comments section. 

 

Options when hitting Ground Water:

1.  Install dewatering system (which is standard for us anyway), keep the hole dry until the pool is installed, and keep the pool where originally planned.  This option works especially well for fiberglass pools because the pool is installed and full of water in a matter of hours after excavation, lessening the ‘fight’ required to tame the ground water.  When encountering high water tables in conjunction with sandy soil, severe “cave-ins” may occur which increase the amount gravel backfill required around the pool.  In our case, we will allow for one additional load of gravel beyond a normal installation, the customer covers the cost of any additional gravel beyond that.  A load of gravel runs around $400-$500 in our area and it’s very, very rare that we require more than one additional load and have to charge the customer anything.     

2.   Elevate the Pool:  same as when hitting rock. 

Note:  Don’t let these potential unforeseen expenses intimidate you.  Of the 600+ pools we’ve installed, only around 1% have incurred any additional cost due to rock or ground water.         

2.  Exactly How Much Dirt Will There Be?

Part of planning every pool project is determining what to do with the dirt.  Generally speaking, people have no concept of how much dirt actually comes out of a pool excavation……how could you know right?  I usually tell people to imagine how much dirt they would expect and multiply it by 5 or 10.  Your average pool excavation will generate a pile of dirt the size of about five garden sheds.  So, this is significantly more than we can ‘lose’ in a typical flat yard.  The best plan is to haul that stuff out of there so you aren’t stuck wheel barrowing it on the weekends or hiring someone else to come and get it.          

3.  What will happen to my yard?

We haven’t figured out how to haul dirt, gravel, water, and concrete by helicopter yet; so until we do, we have to move all that big heavy stuff in and out of your backyard the old fashioned way…..via the ground.  And we do this with very large trucks.  So the reality is that your access lane and yard may incur some damage.  Say good-bye to most or all of the grass around the pool as well as a 20’x20’ area for piles of material and the entire access lane if through the yard.  Hey, I’ve yet to hear any complaints about less grass to cut!

4.  Do I really save $ by Digging My own Hole?

Many folks think they can save big bucks doing the pool excavation themselves and have the pool contractor do the rest.  Actually, most pool companies would probably prefer to charge you at least double if you want to dig your own hole, but we’re not quite that generous:).  Seriously though, it doesn’t save much money at all, maybe $500-$1000, because we have to bring our machine to the site anyway to lift and set the pool.  It only takes a couple of hours to dig the hole so we might as well go ahead and do the pool excavation while we’re there.    

 Well, as you can see, there will be some major stuff going on in your backyard (which you can watch in a really cool video here).  But how exciting is a pool....right?  All of this stuff goes by the way-side the first time you and your family relax, play, and laugh around your awesome new pool.  Good Luck!

Jason Hughes

 

Comments and questions welcome as always.

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Comments

Thank you for this blog. Your information inspired me to seriously investigate my fiberglass pool options. Sadly I live in Ohio, so I don't get to hire you after you won all my confidence! I found that my small urban back yard has the sewer line running diagonally through the yard chewing up my pool possibilites. After I sent my scale drawings to the Leisure Pool rep in Columbus whom I'd been talking with for weeks, I heard nothing back. One: that seemed a little rude, even if I am a hopeless case. Would have been good business to break the news to me even in email and remind us to consider them when we move to a different house. But I am serious shopper and would like to price out moving a sewer line. Is it totally ridiculous and cost prohibitive? I'd be financing the pool anyway, so how much more would we be talking? Several thousand? Tens of thousands? I'd appreciate a ballpark or where I find this out. My county sanitation website didn't offer much info. And secondly, is there any central ohio pool guys you could recommend I go to apart from my Leisure Pool rep who dumped me? I know you are very diplomatic and professional, but I'll take some word of mouth :)
Posted @ Monday, July 11, 2011 5:24 PM by Sue
I hit a boulder the size of a dump truck of dense blue granite. My pool builder also ripped out my sewer lone from the house even after checking with all the municipalities. I am assuming it is their responsibility to repair it.  
 
Opinion?
Posted @ Sunday, September 25, 2011 8:48 PM by Rob
Jason thanks for the great article. You really opened my eyes when you talked about dealing with customers at the begining of your article and how they lack an in-depth knowledge of what we do and that by not explaining all the details can cause a big breakdown in communication. Sometimes we get so caught up in doing or job day in and day out and we forget that this is all new to our customers. 
 
Thanks again!
Posted @ Wednesday, December 04, 2013 2:58 PM by Todd Wright
Hey Jason, 
Very informative Post. 
It will help many people. 
Thanks for sharing:) 
Anup 
Posted @ Monday, March 03, 2014 3:51 AM by Anup Gupta
Very nice post. Good tips for any kind of construction contractor
Posted @ Wednesday, April 09, 2014 9:53 PM by Excavator Hire Canberra
Jason 
Is it required or at least SOP to shoot a grade before the digging starts? If not how does the grade get done accurately? 
Thanks 
Robby
Posted @ Tuesday, June 03, 2014 2:15 PM by Robby Morton
Thanks for sharing this tips & questions! they are really interesting and very useful! based on the above questions we recently hired Experienced Excavation Contractors in Melbourne for our Pool excavation.
Posted @ Thursday, June 19, 2014 7:43 PM by Joyous
Thanks for share, your information is really helpful for us
Posted @ Saturday, August 02, 2014 1:37 AM by Flynn Piesse
We've made that same mistake of digging our own whole and turned it into a "service project" for our church. Ya it took about 6 days of intense labor and a shot at my ego. We'll be smart not to do that again, but hey, it's was a nice pay back present to invite everyone over for a pool party when it was finished. 
 
http://www.reliantpools.com/round-rock-pool-builder/
Posted @ Monday, October 13, 2014 9:21 PM by Lars Melger
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