Installing a container pool involves more than simply choosing a level area and pouring a concrete slab.
Once filled, a container pool carries a substantial amount of weight. Every cubic metre of water weighs approximately one tonne, before allowing for the pool structure, filtration equipment, people, decking and other connected features.
For that reason, the concrete base needs to be carefully planned and constructed for the selected pool and the specific conditions of the property.
There is no single concrete slab design that will suit every container pool and every property.
The required slab thickness, concrete strength, reinforcing and foundation details may depend on:
Sites with poor, variable or liquefaction-prone ground may require a specifically engineered foundation rather than a standard concrete slab.
A suitably qualified local contractor or engineer should confirm the final design before construction begins.
A strong concrete slab can still fail if the ground beneath it has not been prepared correctly.
Before the concrete is poured, the site may need to be excavated to remove:
A suitable compacted basecourse will normally be installed beneath the slab. This base material should be placed and compacted in controlled layers to reduce the risk of settlement.
Any soft areas should be identified and repaired before the concrete work begins.
The reinforcing must also be positioned correctly and supported so that it remains in the right place while the concrete is poured.
The surface supporting the container pool should be flat, level and consistent in every direction.
It should be free from:
A fall should not normally be built into the area directly supporting the pool unless the final pool or foundation drawings specifically require one.
An uneven concrete base can cause the pool to sit incorrectly and may create concentrated loading in certain areas. It can also make surrounding decking, stairs, covers and landscaping difficult to align.
The concrete contractor should laser-check or survey the completed slab before the pool is delivered.
The concrete base should be set out using the final drawings and dimensions for the selected pool.
Do not rely only on approximate shipping-container dimensions. A converted container pool may include structural components, filtration equipment, plumbing or finishes that extend beyond the main container body.
When positioning the slab, allow for:
Planning these items early can prevent expensive alterations later.
Water should not be allowed to collect around the pool or wash beneath the concrete base.
The site plan should consider:
The concrete surface supporting the pool should normally remain level. Water should instead be directed away using the surrounding ground, paving or drainage system.
Chemically treated pool water should only be discharged using an appropriate method accepted by the relevant local authority.
The location of plumbing, electrical conduits and pool equipment should be confirmed before the slab is poured.
These services may include:
Pipes, conduits and inspection points should not be placed beneath major structural loading areas unless they form part of the approved foundation design.
All electrical work should be completed by an appropriately qualified and licensed electrical contractor.
Before excavation begins, the client should identify any underground services or restrictions affecting the proposed pool location.
These may include:
A pool and its foundation should not be positioned over underground infrastructure without approval from the relevant asset owner.
Property easements and access requirements should also be checked before confirming the pool location.
A newly poured slab should not be loaded simply because the surface looks dry.
Concrete needs time to develop sufficient strength before the pool can be placed onto it.
The concrete contractor or engineer should confirm:
Pool delivery should only be arranged after the contractor or engineer has confirmed that the base is ready to carry the pool.
Container pools are generally delivered as complete or near-complete structures and lifted into position using a crane.
Before construction begins, check:
Restricted or complicated sites should be reviewed by the delivery or crane contractor before the installation date.
The pool slab should remain clear and accessible so that the pool can be safely lowered into position.
The property owner should check the requirements of their local council before excavation or concrete work begins.
Approvals or inspections may relate to:
Residential pools must have suitable measures to restrict unsupervised access by young children.
Pool fencing, gates and barriers should be considered before the concrete base, decking and landscaping are completed.
Unless specifically included in the sales agreement, the property owner is generally responsible for arranging:
Apollo NZ supplies the container pool but does not design or construct the client’s concrete foundation.
The foundation should be completed by suitably qualified local contractors and must comply with the final pool drawings, site conditions, engineering requirements and applicable New Zealand regulations.
Before pool delivery, confirm that:
The concrete foundation is one of the most important parts of a container pool installation.
Good planning, correct ground preparation, professional concrete work and early coordination with engineers, contractors and delivery providers can help avoid delays and unexpected costs.
Clients should always use the final drawings for their selected pool and obtain site-specific advice before beginning any foundation work.
