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Stormbloc® and Stormbloc® Inspect Frequently Asked Questions
Q. What is Stormbloc®?
A. Stormbloc® is an extremely strong plastic crate of
96% void ratio, which forms a modular system for use as an storage / infiltration system or soakaway. Each module incorporates
an integral tunnel running through it, which can be used for
inspection and maintenance.
Q. What size are the blocks?
A. The standard block size is 800 mm x 800 mm in plan and
660 mm in depth. We can also supply 350 mm deep blocks.
Q. Can Stormbloc® be used below
roads or car-parking areas?
A. Yes it can. The structure is extremely strong but is designed
to take distributed loads and not point loads. The depth that
the Stormbloc® is buried at dictates the maximum load
that can be applied.
Q. What maintenance is required for
the Stormbloc® system?
A. The patented design of the block incorporates an access
tunnel, which provides access to the system for inspection
and maintenance. Entry to these tunnels can be gained through
the inlet pipes. Periodic inspection of the system should
be made and the tunnels should then be jetted if necessary.
We would suggest that a catch pit be installed upstream of
the system to prevent large objects from entering the blocks.
Ideally, a Downstream Defender® hydrodynamic separator
is also used upstream of the system in order to remove the
majority of grits and silts before they enter the system,
thus providing an even greater buffer to any problems occurring.
Q. How are the inlet pipes connected
to the Stormbloc® system?
A. The system is supplied with number of end plates that
attach directly to the end of the inspection tunnels. These
end plates can be cut to accept pipes up to 150 mm in diameter.
It is also possible to attach pipes up to 100 mm in diameter
to the side of the blocks via a removable cut-out.
Q. Does the Stormbloc® Infiltration
System require stone fill on the base and sides?
A. Stormbloc® should be laid onto a firm sub-base consisting
of 150 mm of sand or gravel. Other than this there is no requirement
for stone fill to the sides. Due to the high void ratio and
open construction within the blocks water can move freely
in all directions, as such all surfaces of the system will
be utilised for infiltration into the ground.
Q. What is the range of pipe sizes that can be connected to the Stormblco® Inspect?
A. 100 mm – 525 mm
Q. Does the inlet to the Stormbloc® Inspect need to be in line with the tunnels within the Stormbloc® modules?
A. No, the inlet can be at 90 degrees to the tunnels. Either 1, 2 or 3 sides of the Stormbloc® Inspect can be opened to give access to the Stormbloc® tunnels.
Q. Can the Stormbloc® Inspect be used without the Stormbloc®?
A. No, it is designed to be an integral part of a Stormbloc® Storage System.
Q. What is the loading limit of Stormbloc® Inspect?
A. The Stormbloc® Inspect has a similar strength to the standard Stormbloc® Inspect modules, i.e. 280 kN/m² for short term loads and 80 kN/m² for long term loads.
Q. Is the access shaft suitable for man access?
A. No, the internal diameter of the access shaft is 500 mm and so can only be used for remote CCTV surveying and rodding/ jetting.
Q. What is the capacity of a Stormbloc® Inspect module?
A. The capacity of a single layer Stormbloc® Inspect module is similar to a standard Stormbloc module, ie. 0.401m³.
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