What a Gunite Pool Builder Reads on a Nashville, TN, Site Before the Design Is Finished
A gunite pool builder in Nashville, TN, should read the ground before drawing a shape, because in Middle Tennessee the ground decides more of the project than the drawing does. Most conversations about hiring a builder start with a shape.
Shallow limestone, falling lots, tight access between houses and the way water concentrates on a hillside all shape what can be built and what it takes to build it.
Since 2008, Hardscape Contractors has been building custom inground pools and the outdoor rooms around them, and in Middle Tennessee most of what that experience amounts to is a working knowledge of what the ground underneath is going to do. The point of a sprayed concrete structure on terrain like this is that it is formed in place, so it can be shaped to the ground rather than requiring the ground to be shaped to it.
That advantage is only real if someone reads the site properly first, which is why our first visit is a survey rather than a sales call.
What Does a Gunite Pool Builder Look At During the First Site Visit?
A gunite pool builder looks at grade, water, rock, access and utilities during the first site visit. That means measuring the fall across the proposed pool area rather than eyeballing it, tracing the direction surface water currently takes and where it leaves the property, and checking any exposed rock and the depth of soil above it.
The access route matters just as much, including gate widths, overhead wires and turning space for machinery and the concrete pump, along with the position of the house, the septic field or sewer lateral and any easement.
Then come the softer inputs. Where the sun lands through the afternoon, which trees the household wants to keep, where the noise of equipment would be felt and which windows look out over the site all count. Those things do not appear on a survey, and they decide whether the finished pool gets used.
What comes out of that visit is a set of constraints rather than a design. On a steep Middle Tennessee lot the constraints usually narrow the possible positions to one or two, and everything else follows from picking between them.
How Does Limestone Change Pool Excavation in Middle Tennessee?
Limestone close to the surface moves pool excavation from digging into hammering or controlled breaking, and it is the single largest unknown on many sites in this region. That change affects the schedule, the noise, the spoil volume and the cost in a way that a flat allowance rarely covers accurately.
The honest way to handle it is to find out before the design is fixed. Test holes at the proposed corners tell you the depth to refusal, and that answer sometimes moves the pool ten or fifteen feet across the yard into softer ground for a fraction of what breaking rock would have cost. Where the rock cannot be avoided, knowing about it early means it is priced rather than claimed.
There is an upside worth naming. Excavating into competent rock produces a very stable bearing condition, and a sprayed structure formed against it sits on ground that is not going to move. Some of the most durable pools we have built in this region are the ones that were hardest to dig.
Why Does a Sprayed Gunite Structure Suit a Falling Lot?
A sprayed gunite structure suits a falling lot because its thickness, reinforcement and geometry can vary around the pool to match the loads.
A pool set into a slope is rarely a simple rectangle in plan and section. One end sits below the existing grade and the other stands proud of it, the deck has to be leveled against ground that is falling away, and the wall on the downhill side is doing structural work that a wall on a flat site is not.
Because the structure is sprayed over a steel cage, the uphill wall and the downhill wall can be built differently. A raised spa can be integrated at a level that works with the terrace, and a vanishing edge on the downhill side becomes an option rather than a bolt-on. That flexibility is what gunite and concrete pool structures bring to difficult ground.
Where a slope is severe and the terrace would be small, the better answer is sometimes a smaller body of water. A precast plunge pool set into a cut terrace leaves room for seating and shade, and on a tight hillside lot that trade is usually the right one.
What Holds the Ground Around a Pool Built Into a Hillside?
Engineered retaining holds the ground around a hillside pool, and it is a structural design rather than a landscape detail.
A wall holding several feet of saturated soil next to a pool structure is carrying lateral load, so it needs a designed footing, reinforcement, drainage behind it and a surcharge allowance for anything standing on the ground above. On the downhill side, the ground the deck sits on may need to be built up and held rather than simply filled.
Terracing is often the better answer than one tall wall. Two or three shorter walls with planting shelves between them break the mass, keep individual heights below the thresholds that trigger heavier engineering and produce something that reads as a garden. They also spread the load over a wider footprint, which suits ground that varies.
Whatever the form, the drainage behind the wall is the part that decides whether it stands. Clean angular backfill, a perforated line with a real outlet and a filter layer between the drainage stone and the surrounding soil are what keep water from building pressure against the back of the structure over years.
How Is Water Managed on a Sloping Pool Site?
Water on a sloping pool site is managed by intercepting it above the pool and collecting it from the deck before routing it to a proper outlet.
Water arrives from uphill and leaves downhill, and putting a large impervious surface across the middle of that route changes both. The catchment above the pool is usually intercepted with a swale or a subsurface line, and the water that lands on the new deck has to go to an outlet that can receive it.
Concentrating runoff is the failure people notice a year later, when a neighbor's bank starts eroding or a lower part of the garden turns to mud. Designing the outfall is part of the pool design, not an afterthought, and on some Middle Tennessee lots it means detaining water on site rather than discharging it straight down the hill.
What Does Site Access Decide About How the Pool Gets Built?
Site access decides the machinery, and the machinery decides the construction method. A rear yard reachable through a wide side gate takes a full-size excavator and a straightforward spoil route. A yard reachable only through a narrow gap between the house and the boundary means smaller machines, more passes and sometimes craning material over the roof.
Access also governs the concrete. A sprayed structure needs a pump with a reachable position and a hose route to the excavation, and a site where the pump cannot get within reach needs a different plan. We establish that on the first visit, because discovering it on the day is how a schedule loses a week.
On hillside lots the spoil is its own project. Excavated material has to go somewhere, and hauling it off a steep site costs more than hauling it off a flat one. Where the design allows, reusing the spoil to build the terrace on the downhill side turns a disposal cost into fill.
What Should Be Engineered Rather Than Assumed on a Hillside Pool Build?
Tall retaining, structural supports, pools near a slope crest or bluff edge and any shell acting as a retaining element should be engineered rather than assumed on a hillside pool build. In those cases the right sequence is a geotechnical view of the ground, then a structural design, then a pool drawing that respects both.
Homeowners sometimes read that sequence as delay. It is the opposite, because it is the part of the project that prevents a redesign after excavation has exposed something nobody planned for. Our proposals identify which elements need engineering and who provides it, so the scope is visible at the start.
How Does the Tennessee Climate Affect What Gets Specified?
The Tennessee climate pushes the specification toward heating, shade and lighting for a long swimming season and toward drainage and durable surfaces for a short, wet winter. The long season justifies those comfort features because the hours a pool is usable are what the household is actually buying. The wet winter puts the emphasis on deck materials that shed water and coping that tolerates repeated wetting.
Freeze cycling here is milder than further north, but it is not absent, and the surfaces that suffer are horizontal and near the waterline. Dense stone and low-absorption manufactured units handle that well. A softer, more porous product photographs beautifully in July and starts to show wear after a few seasons, so it belongs in protected positions rather than at the water edge.
Sun exposure is the other climate input, and it is site specific. A pool in full afternoon sun on a south-facing slope heats itself and needs shade built into the plan, while a pool tucked below a wooded bank runs cooler and carries a leaf load every fall. We plot both during the survey so the decisions about heating and shade are made on evidence.
Related: Gunite Pool and Pool Installer in Nashville, TN: Planning Tips for a Better Backyard Layout
What Belongs in a Backyard Plan Beyond the Pool Itself?
A backyard plan beyond the pool usually includes shade, an outdoor kitchen or bar, a fire feature, landscape lighting and screening, because the pool is the anchor of a larger outdoor room. On the properties we work on in this region, all of those elements are part of the same program, and they all touch the same trenches and the same base.
Designing them together costs far less than adding them in sequence. Conduit, gas and drainage installed once while the ground is open cost a fraction of three separate excavations through a finished deck, and the finished space reads as one design rather than a series of additions.
The wider plan also affects where the pool sits. A pavilion needs footings and a roof line that works with the house, and an outdoor kitchen needs services and a position out of the prevailing smoke path. Those requirements pull on the pool position, and resolving them at the drawing stage is the whole argument for planning the yard as one build.
How Does a Pool Terrace Work When the Ground Falls Away?
A pool terrace on falling ground works best as a generous terrace on one side and a minimum walkway on the other, designed before the pool shape is settled. The usable flat area around the water is what a hillside site is short of. A narrow band of deck all the way round is less useful, and on a falling lot the generous side is usually the one nearest the house.
Level changes between the terrace and the rest of the garden then need steps and low walls that feel intentional. Broad treads, generous landings and seat-height walls at the edges turn a retained terrace into an outdoor room instead of a platform. That is where a pavilion, an outdoor kitchen or a fire feature earns its place in the plan.
Hiring a Gunite Pool Builder in Nashville, TN
If a pool is part of the plan for your property, the first useful step is a survey of the ground rather than a shape on a page.
Our team measures the fall, reads the access, looks hard at the rock and the water, and brings that back as a design that shows the pool, the retaining, the terrace and the drainage as one structure.
Hardscape Contractors builds gunite and concrete pools across Middle Tennessee and the Chattanooga area. Contact Hardscape Contractors to schedule a site survey for your gunite pool.
In Summary
Does a sloped lot near Nashville cost more to build a pool on?
A sloped lot near Nashville typically costs more to build a pool on, and the extra cost shows up in earthworks, retaining and engineering rather than in the pool itself. A flat lot needs a hole, while a falling lot needs a hole, a structure to hold the ground above it, a level terrace to stand on and a route for water that is now concentrated. Hardscape Contractors prices those elements separately on the proposal so it is clear which part of the figure is the pool and which part is the ground.
How do you know if there is rock before digging starts?
Test holes are the reliable way to know if there is rock before digging starts, with the neighborhood and the exposed geology giving an early hint. On sites where the surface suggests shallow limestone, we recommend probing before the design is finalized, because the answer can move the pool several feet and save a great deal of hammering. A builder who quotes a rock allowance without testing is guessing with your budget.
Can a pool be built on a bluff lot in the Chattanooga area?
Pools are frequently built on bluff lots in the Chattanooga area, with the setback from the edge, the stability of the ground below and the engineer's certification deciding what is possible. Those are questions for a geotechnical assessment rather than for a pool salesman. Where a full-size structure does not suit the ground, a smaller shell set into a terrace often does.
Related: Why a Gunite Swimming Pool Is the Top Choice for Franklin & Brentwood, TN Homeowners
About the Author
Since 2008, we have shared our passion for the great outdoors by creating award-winning landscapes that inspire our customers to spend more time outside. As a first-generation company, we’ve persevered through entrepreneurial challenges, put our strong Midwestern work ethic to good use, and got our hands and boots dirty to become what we are today—a successful business with four locations spanning across Colorado, Kansas, Nebraska, and Tennessee.
