In our previous post we’ve made it clear that before any concrete is placed for the pool deck, the placement of steel, electrical bond, electrical underground, and plumbing shall be inspected and approved.
At Urban Pool Services we make sure that The concrete deck is a minimum thickness of three and one-half inches (3½”). All Rebar are a minimum size of three-eighths inch (3/8″) and located no more than eighteen inches (18″) on center each way. The bond conductor is always a minimum size of #8 AWG.
In addition, we make sure to spread evenly of the 4 ground clamps around the pool to electrically bond the pool from stray ground current.
Once we have the approval of all inspections, our gunite team take action.
In theory, you can use any material that is able to provide a guarantee of sufficient impermeability to contain the water without losses, and what is more important: No leaking from the outside in, to avoid problems of water contamination.
Team gunite in action
For those who are not familiar with the subject:
Gunite is a mixture of sand, rock and cement that will be applied by our experienced gunite team. These technicians will skillfully shoot the gunite around your pool’s steel reinforcement grid.
This Mixure is a popular choice because it is highly durable and it can be created in just about any shape. This method of projecting the concrete at high pressure is a system based on the projection of a jet of dry mixed concrete aided by a powerful flow of compressed air, which is directed to a wall of bricks, wood, composite or metal that serves as a container or mold.
The Gunite is one of the safest systems, and with the most resistant results known. It also has the advantage of allowing the construction of a pool with infinite dimensions and shapes.
Shotcrete or Gunite?
Gunite and shotcrete are two trade terms for different types of sprayed concrete. Sprayed concrete was developed as a construction solution for tunnels, underground structures, slope stabilization, structural repairs, and of course, swimming pools.
The process involves a mortar or small-aggregate concrete that is sprayed with air power onto surfaces at a high velocity. The force of the concrete spray consolidates and compacts the material and ensures that it adheres to the host surface.
Both gunite and shotcrete are essentially the same material, but they are applied with different processes. Gunite is the popular trade term for dry-gun concrete, while shotcrete is the common term for wet-gun concrete.
With the gunite method, the dry concrete ingredients are placed into a hopper and then pushed out pneumatically through a hose to a nozzle. The nozzle operator then controls the addition of water at the nozzle, turning the dry ingredients into concrete that is fully mixed by the time the material hits the host surface.
This gives the operator control over the water content being put into the mix, allowing for a better placement process without the need for additional accelerators. It is the recommended method when the process involves frequent stops during the application process.
on the other hand, wet-mix shotcrete uses fully mixed concrete and sends it through a hose and nozzle without additional water.
This is the most commonly used process, as it produces less waste material and dust compared to dry-mix gunite.
The greatest advantage of the wet-mix process is that larger volumes can be placed in less time.
After your gunite has been completed, we will need to allow the gunite to cure properly.
During the 5 days following the application of the gunite, we should water your pool several times a day, wet the pool thoroughly, top to bottom. Normally, during this process the water starts to accumulate at the bottom of the basin, do not worry about that, will be pumped out before we apply the pool’s interior finish.
Swimming pool backfill
Now that we have placed the gunite, we must remove the formwork and fill that then all that over- excavated pool area need to be filled
Our pool construction team must complete the concrete collar of your pool and then pour the footing around the outside of your pool.
Generally, 8″ to 10″ up all around the frame work of the pool. Some time at this point we have already installed the pool liner.
The best choice to use for backfilling
Clear splintered stone is generally the best choice for backfilling. The stone is generally 3/4″ – 1″ in size and doesn’t contain any “fines” or limestone dust.
The chipped limestone will lock with the other stones around it making it harder to settle and compact
Dirt is cheaper but not a good alternative
Inground pool builders who tell you that dirt backfill is fine to use, are just trying to be competitive giving you the best inground pool prices, but they don’t have enough experience or knowledge to make the right decisions in order to benefit the client.
They will surely justify the use of the land with reasons like:
- It takes more time and energy to haul off all the dirt from a pool excavation
- It costs money to bring in stone for backfill
- It causes additional landscaping to fix the additional destruction to the yard
And yes, those are very valid reasons, but should it really matter when trying to build something that will last for decades?
It is true that inground pool construction prices will go up with the need for stone and dirt removal, but you are doing this once and it shouldn’t be a factor.
Equipment Set, Electric & Gas
After finishing backfill it is time to plumbing to come back into the picture and plumb in all the filtration equipment, with any water feature pumps or other optional equipment you may have chosen.
Electrical conduits for your pool equipment power and pool lights will be run and the breaker box for the pool equipment will be installed, ready for the equipment to be set.
We also take care of bringing any gas line or pool heater to the equipment location. Your field superintendent will provide direction on how, where and when the gas lines should be installed.
Plumbing and electrical inspections
It is very important to work according to the regulations and legal requirements of the State of Florida when it comes to building a swimming pool because always, at the end of each phase an inspection and its approval is mandatory to continue to the next phase.
Our expert and certified pool builders specializes in building custom pools with affordable prices for you, with the best materials and finishes taking care of your budget, see why more and more our customers recommend us as the Best Pool Builders in South Florida.