Before any portable unit or container can be delivered to your premises, proper ground preparation is essential. Whether you are hiring or buying from Unit Group, the success of your installation depends on a solid foundation, safe access, and careful planning. Failing to prepare the site properly can lead to complications such as delivery delays, stability issues, or safety risks.
This guide explains the steps involved in preparing your ground for container delivery and what Unit Group recommends for a smooth process. Our team is always available to advise you if you are unsure about specific ground conditions or delivery access requirements.
Understanding the Importance of Ground Preparation
Preparing the ground in advance ensures that your storage container, welfare unit, office cabin, or other portable building is installed securely and functions as intended. Unit Group’s delivery teams rely on stable, accessible ground conditions to position units correctly using specialist equipment.
Good preparation reduces the risk of:
- Delivery delays due to poor access
- Uneven placement or unit tilt
- Long-term ground damage or sinking
- Safety hazards for users or site staff
With appropriate planning, you can avoid costly remedial work and ensure your container or unit is ready for immediate use upon arrival.
Step-by-Step Guide to Preparing Your Site
Ground preparation can vary slightly depending on the type and size of the unit, but the basic steps are consistent across most installations.
Unit Group recommends that you follow a clear process:
- Select a level and firm area with no obstructions
- Confirm site access measurements for the delivery vehicle
- Prepare the ground with suitable base material (e.g. paving slabs, concrete pads)
- Clear debris, waste or overhanging branches
- Review local planning permissions if applicable
Our team is happy to carry out a pre-delivery site check and help identify any potential issues before delivery day.
Step 1 – Choose a Suitable Location
The first and most important decision is where to position your unit. Containers and welfare units require level ground to sit evenly and function correctly. Avoid sloped or soft ground, as this may cause movement or uneven wear over time. The surface must be firm enough to support the weight of the unit and any contents you intend to store.
Ideal locations include:
- Concrete slabs
- Tarmac areas
- Compacted hardcore or gravel
- Reinforced paving
If your chosen spot is not fully level, it may need to be graded or reinforced before delivery.
Step 2 – Ensure Firm and Stable Ground
Containers and portable units can weigh several tonnes, so the ground must be able to support both the unit and the delivery equipment. A stable surface prevents sinking, tilting or long-term damage. Concrete, tarmac, or well-compacted hardcore are recommended. Grass, loose soil or sand are not ideal without reinforcement.
For added stability, Unit Group suggests using:
- Concrete pads or paving slabs
- Steel supports or bearers
- Crushed stone bases
These options help distribute weight evenly and extend the lifespan of your unit’s structure.
Step 3 – Provide Clear Site Access
Safe and accessible delivery is just as important as ground stability. Unit Group uses lorry-mounted cranes or HIABs to position containers, so space is required for vehicle movement and lifting.
Key considerations include:
- Minimum width and height clearance for access roads
- Turning space for large vehicles
- No overhead obstructions (e.g. wires or low trees)
- Level space to extend stabiliser legs
Measure all access points and ensure they meet our delivery requirements. You should also notify neighbours if access may be temporarily restricted during delivery.
Step 4 – Consider Load-Bearing Needs
Some ground surfaces may appear solid but do not support heavy loads over time. If you’re installing a large container or using it for heavy equipment storage, it’s important to factor in the load-bearing capacity of the site. This includes not only the weight of the unit itself but also any internal fittings and usage.
To address this:
- Use treated timber bearers under each corner
- Install concrete pads at key load points
- Avoid placing directly on tarmac in hot weather
These precautions help maintain unit integrity and prevent long-term issues with settlement or sinking.
Utilities and Extra Considerations
Many of the units available from Unit Group include built-in services such as lighting, heating, or plumbing. If your delivery includes a welfare unit, office cabin or shower block, you may need to prepare utility connections in advance.
Be sure to:
- Plan for power connections (mains or generator)
- Check for suitable water supply or drainage points
- Identify where cabling or pipework will enter the site
- Leave space around the unit for maintenance
Good planning ensures your unit is functional from day one, avoiding additional setup costs or downtime.
Does Your Unit Require Power or Water?
Certain units such as canteens or toilet units require electricity and plumbing. You will need to coordinate with local electricians or plumbers ahead of time to ensure all connections are safely installed.
Make sure to:
- Identify your power supply (single phase or generator)
- Provide access to a fresh water source if needed
- Arrange for waste removal or drainage
- Check for environmental or building regulations
Unit Group can advise on recommended setups based on the unit type and usage.
Weather Conditions and Delivery Timing
UK weather can affect ground conditions, access and delivery logistics. Wet or frozen ground increases the risk of instability or crane failure. If heavy rain is forecast, ground reinforcement may be necessary. Similarly, snow or ice can delay access or cause health and safety concerns for staff.
Plan deliveries for favourable conditions when possible and:
- Avoid high wind or storms during crane use
- Ensure clear paths during winter months
- Use mats or trackway if the ground is wet
- Keep communication open with our delivery team
Being weather-aware ensures a smoother, safer delivery process.
Working with Unit Group for a Smooth Delivery
At Unit Group, we aim to make the delivery and installation process straightforward. Our team can conduct a pre-delivery survey and assess your site conditions.
We can also offer recommendations on:
- Ground surface preparation
- Site access measurements
- Utility setup requirements
- Regulatory guidance
We’ve delivered thousands of units across the UK and understand the challenges different sites may present. By working with our experienced staff, you avoid guesswork and get expert support from start to finish.
Common Mistakes to Avoid
Failing to prepare your ground properly can lead to unnecessary problems that delay your project and increase costs.
Unit Group regularly advises customers to avoid:
- Installing on soft or sloped surfaces
- Neglecting access space for crane vehicles
- Forgetting about utilities or drainage
- Overlooking local planning requirements
- Skipping a pre-delivery site assessment
These common issues can easily be prevented with careful planning and advice from our team.
Final Checks Before Delivery Day
Before your unit arrives, take time to double-check the site. Confirm that everything is in place to receive the delivery smoothly.
Final steps include:
- Ensuring the area is level, stable and clear
- Removing obstructions or vehicles from the route
- Preparing ground support materials (pads, bearers)
- Notifying relevant staff or neighbours
- Keeping the Unit Group team updated with any last-minute changes
Being ready ensures that our team can unload and position your unit safely and efficiently.
Conclusion: Preparing the Ground Sets the Foundation for Success
Proper ground preparation is key to a successful delivery and long-term use of your container, cabin or welfare unit. With the right surface, clear access and utility setup, you’ll avoid complications and make the most of your container hire or purchase. At Unit Group, we’re committed to helping you get the most from your equipment from the moment it arrives.
If you need help preparing your site, get in touch with our team today.