In addition to providing significant benefits to Cost Saving and Programme Reduction, using AquaSpira CSR pipes creates a genuine step-change in Health & Safety and Environmental Improvements.

Installation and Cost Benefits


Genuine and Substantial Cost Savings and Reductions in Programme Time are easily achieved through:

  • Significantly Reduced Excavation - The minimal OD of AquaSpira pipes and joints mean that trench widths and depths can be reduced, resulting in 20 - 30% less excavation depending on diameter.
  • Reduced Bedding & Surround - Average 40% less material than for concrete pipes.
  • Lightweight - All diameters can be handled and installed with standard site machinery.
  • Robust & Durable - Unique Steel Reinforced PE Pipe Structure.
  • Push-Fit Joints - Innovative spigot & socket sealed joints.
  • Range of Lengths - 2.6m and 3m lengths for use in standard trench boxes. Longer lengths available for use in shallow open trench installations.
  • Easy to Manoeuvre – the combined benefits of lightweight, short lengths and minimal OD make AquaSpira the most versatile pipes for use in locations where existing utilities are present.
  • Rocker Pipes not normally required.
  • Genuine Health & Safety benefits - AquaSpira pipes weigh just 5% the weight of concrete pipes.
  • 60% Fewer Loads and Minimal Offloading Time – particularly beneficial for sites with difficult access or other constraints.
  • Simple & Safe site handling.
  • Lateral Connections - simple and cost-effective method of forming lateral connections.

Our full Pipe Installation Guide is available here


Health & Safety Benefits


Compared to extremely heavy and cumbersome concrete pipes, the Health & Safety benefits of AquaSpira CSR Pipes are substantial.

  • Light Weight - AquaSpira pipes weigh just 5% the weight of concrete pipes – see comparison table below.
  • No Rough or Sharp Edges – much safer handling and jointing.
  • Reduced exposure to deep excavations – smaller trenches and much more efficient installation minimizes employee time spent in deep excavations and the period of time that excavations are open.
  • Jointing Frames – lightweight frame for safe and efficient jointing of pipes. Operatives insert the frame and then stand clear as the machine pushes the pipe home.
  • Safer Offloading – pipes can be safely offloaded with fork machines or slings around packs or larger individual pipes - in accordance with site risk assessment and method statement.
  • Innovative Access and Tank Systems – dramatically reduce employee time spent working in deep, confined spaces. See Pipeline Access Systems

Weight Comparison - AquaSpira Vs Concrete Pipe

Nominal Diameter AquaSpira (3m/2.6m*) Concrete (2.5m)
900 116 2060
1200 187 3630
1500* 220 5330
1800* 271 7300
2100* 326 9160

Note: Concrete pipe weights based upon FP McCann pipes April 2016

Reduced Environmental Impact


When considering the environmental impact of drainage systems, AquaSpira CSR Pipes are in a class of their own.

  • More for Less - the innovative use of composite materials to manufacture AquaSpira CSR Pipe has created a step change in reducing the mass of materials required to manufacture substantially stronger, higher quality products.
  • 65% Less HDPE Consumption - compared to plastic pipes. The steel element is UK sourced and contains 50%+ recycled material.
  • Recycled Content - average 25-30%.
  • Standard site machines - Less fuel consumption/emissions.
  • Reduced Transport - over 60% reduction in transport requirements compared to concrete pipes.
  • Recyclable - AquaSpira products are manufactured from materials that are 100% recyclable.
  • Long Service Life - the resistance of HDPE to chemicals and high Ph values ensures long, active service life.
  • Manufactured in the UK – Pipes, components and ancillaries are all manufactured in the UK.

Your Questions Answered


Hopefully you will find the answers here to any questions you have about installing AquaSpira pipes, but if you can't find the information that you need, please contact us.


How are AquaSpira pipes jointed?

Pipes are supplied with spigot & socket, push-fit joints with integral rubber ring seals. See Pipe Installation Guide p.9

What are the weights of the pipes?

Please see Pipe Data Table on the Gravity Pipes page

Are Rocker/Short Pipes required?

Rocker/Short Pipes are not ordinarily required, however some clients may specify short pipes for connecting into particular rigid structures.

What is the recommended bedding and backfill detail and material?

Please refer to Typical Construction Details

How do you build AquaSpira pipes into concrete manholes?

Please see Typical Detail for building into manholes. Please refer to Typical Construction Details

What is the maximum depth that an AquaSpira pipe can be laid?

The maximum depth that a pipe can be laid is determined by a combination of the following:

  • Pipe diameter
  • Native Ground Conditions
  • Surcharge (vehicle) loading

For further information please contact our technical department. AquaSpira can provide detailed structural calculations upon request.

What is the minimum cover depth over an AquaSpira pipe?

The established principles for other pipe types apply. Please refer to Typical Construction Details

  • 900mm for general trafficked areas (roads, car parks etc.)
  • 1200mm for new adoptable roads (typically new housing developments)

Where the above cannot be achieved a concrete protection slab may be required. Please refer to typical detail for shallow pipe installations.

How do you provide protection to pipes with less than 900mm cover?

Please refer to typical detail for shallow pipe installations.

What cover is required to prevent flotation?

Please refer to Pipe Flotation Prevention Table in the hydraulic section.

How is the backfill material compacted with 150mm space either side of the pipe?

Aggregate type must be clean single size material which flows well and is relatively self compacting. Stone should be well agitated with a bar to ensure that it has fully settled/compacted.

What is your recommendation for sites with poor ground conditions?

Always undertake Structural Calculations to ensure compliance with maximum deflection tolerance with appropriate approval authority (AquaSpira provide a free calculation service).

Typical methods for improving structural performance in poor ground conditions are:

Increase trench width and width of stone surround
Line the trench bottom and sides with a suitable geotextile material.

Further information – see BS 9295 Section A.13.1

How do you connect gully pipes or other lateral connections into AquaSpira pipes?

AquaSpira Lateral Connectors enable quick and simple connections. See Lateral Connector Data Sheet

Can pipes be installed in a concrete surround?

In accordance with Section A.14.3 of BS 9295 concrete surround is not advisable. If the results of a structural calculation show that additional measures are required, a concrete protection slab above the pipe is the most appropriate specification. Please refer to typical detail for shallow pipe installations.

Can pipes be surrounded with cement grout?

Yes, including those with relatively high curing temperatures, because the steel reinforcement ensures that the circular structure of the pipe is retained regardless of temperature.

How many pipes are delivered on a full load?

Please see Pipe Data Table on the Gravity Pipes page.

What is the recommended method for offloading AquaSpira pipes?

The safest method is to use a machine with extended forks. If this is not possible, pipes should be offloaded with suitable lifting straps in accordance with site risk assessment and method statement.

Do the stainless steel bands around the socket need to be adjusted?

Yes, as shown in our Installation Guide, the bands should be slackened prior to jointing, and if necessary, hand tightened after the joint has been made. Refer to Pipe Installation Guide p.9

What tool is required to adjust the stainless steel band on the socket?

An 8mm Allen Key.

How can I know if/when the joint has been made?

Once the red spigot is no longer visible when looking at the point where the end of the socket begins to splay out (i.e. the end of the flat section of the socket).

Once jointed, what is the normal internal gap between each pipe?

A normal gap would be between 0 and 10mm. However, if for any reason a gap of up to 30mm is evident, the joint will still be fully sealed.

Once jointed, can pipes be un-jointed and re-jointed?

Yes, the external steel band can be slackened and the pipe withdrawn, and re-jointed as necessary.

What is the maximum angle that a pipe joint can be formed?

The maximum angle that can be formed at each joint varies according to the diameter of the pipe – for details please see the AquaSpira Pipe Radius Data Sheet.

Do the pipes need to be installed with sockets facing upstream?


If a pipe is damaged following installation, can it be replaced, and how would this be done?

Yes, please refer to AquaSpira Pipe Replacement Procedure.

The pipes have deflected slightly – is this a problem?

No, the permissible deflection limit for Adoptable Water Co. pipelines is 6% and for Highway Authorities is 5%. However, when tested for compliance for the relevant BS and WRc accreditation, pipes were deflected beyond 20% without failing.

Why is the spigot red?

The bright red spigot provides a highly visible depth insertion marker during installation. When the red spigot is no longer visible, the joint is made.

How much cover material is required above the pipes before compaction equipment can be used?

Please refer to Pipe Bedding Backfill & Protection Guide.

Can AquaSpira pipes be connected to existing concrete pipes?

Yes, the method for doing this is to butt the spigot end of the AquaSpira pipe up to the end of the concrete pipe and make the joint with a proprietary flexible coupling. Bushes may be required to increase the OD of the AquaSpira spigot to enable the flexible coupling to be fitted.

How do I cut an AquaSpira pipe?

Please refer to pipe cutting section of Pipe Bedding, Backfill and Protection Guide.

Can two cut ends of an AquaSpira pipe be jointed with a flexible coupling?

No, pipes can only be joined by means of the Spigot & Socket joints, or by connecting two red spigot ends together with a flexible coupling.

How should pipes be inspected or tested?

The core range of pipes are 900mmØ and above, so the primary method of checking AquaSpira pipes is a ‘visual inspection’.


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