New! The Sub Major is an extreme security bury-in-concrete ground anchor intended to provide an exceptional level of security for the most demanding situations.
It has Sold Secure Ground Anchors Diamond approval - it is the first ground anchor ever to achieve this level of approval. Note that this involves significantly more angle grinder resistance than Motorcycle Diamond approval, which it also has! The Sub Major is also Police approved (under the Secured-by-Design scheme).
And it is made in Britain! This page gives more technical information about the Sub Major ground anchor.
The Sub Major Ground Anchor offers the following features:
We designed the Sub Major for the maximum practical resistance to angle grinder attacks.
The Sold Secure Ground Anchors Diamond test report says:
"The product was cut along the bridge component, in an attempt to remove the central section and release the chain; the angle grinder successfully cut the initial part of the bridge, but upon plunging into the deepest part, the load on the wheel was too great, the angle grinder overloaded and cut out. Repeated attempts were made to cut through in the time allowed, however the same issue occurred and the angle grinder continued to cut out each time it was plunged into the deepest part of the central bridge."
"Note: This attack was performed on the bench, not submerged in concrete. It would be of considerably greater difficulty to achieve even this level of progress with a layer of concrete adding further hindrance to the angle grinder.!"
We also provide guidance on achieving an even higher level of deterrent against angle grinders (see below).
All of our ground anchors are designed with the person that will install it kept in mind. This is our only ground anchor that needs a hole to be dug/prepared and fresh concrete to be laid. The instructions are written in a detailed, step-by-step way to guide you through the process of achieving an extreme-security fitting, even if you are not that familiar with laying fresh concrete. We are happy to give advice by e-mail.
We made our reputation by giving more attention to detail than most competing products. The Sub Major is no exception!
The Sub Major is fabricated out of precision laser-cut steel plates, folded and then welded together. This allows us to achieve an extreme level of security without needing a huge hole to be dug or a massive load of concrete to be laid. The size of the hole in the ground is reduced because we have folded the outer edges of the anchor to be vertical. The openings are square and plenty large enough to accept the largest known chains.
Our design allows us to deliberately use thicker steel for the bridge section. Concrete-in ground anchors are very unlikely to be attacked by thieves but, even so, we wanted to achieve an extreme level of protection with this product so we made the bridge piece thicker than the rest of the product. As well as thicker steel, the bridge is also deliberately deep, meaning that there is a significant amount of concrete filling the space and thus providing further protection to the metalwork. If you wish, our fitting instructions also give guidance on incorporating an additional steel bar through this bridge section, making it even harder for a thief to chisel away the concrete that is protecting the steel. We try to think of likely attack vectors and try to stop them!
The Sub Major also has an enlarged footplate to improve retention in the concrete and also to make the installation process easier.
In addition to this, the Sub Major is protected with an electrophoretic coating plus powder coating and we provide plastic plugs to cover the holes when the anchor is not in use.
The large footplate provides support for the whole anchor before you even mix any concrete! Having the anchor at the right level and properly upright, in advance, means that the concreting process can be much more straightforward and is less likely to require adjustment as you near the final surface level - The ground anchor should be already in the right place so there should be no surprises or big adjustments required!
The plastic plugs are a simple push fit after the anchor is installed. They can be readily removed with a blunt knife, pallet knife or screwdriver. Bury-in ground anchors can present an ankle-twisting hazard when they have holes in the ground when they are not being used. The plastic plugs guard against this risk. Plus, they help to keep leaves and other muck out of the holes! The Sub Major ground anchor incorporates a drainage tube so rain getting into the openings can drain away, but these plastic plugs will help to keep the inside of the anchor relatively clear.
The Sub Major ground anchor can cope with the following combinations of Protector chains:
|Example Chain Combinations||Comments|
|Protector 22mm plus Protector 19mm||OK|
|2 x Protector 19mm||Easy|
|2 x Protector 19mm plus Protector 16mm||OK|
|More chain combinations||TBC|
This ground anchor is suitable to use in an area covered with paving slabs or block paving. One or several slabs/blocks will need to be removed in order for the hole to be dug. The concrete can be finished to end up level with the surrounding area to give a neat result.
Please note that no ground anchor is suitable for fixing directly to the block paving itself! Ditto paving slabs! These can all be lifted away as they are not retained by anything, so any anchor that was fitted to blocks or slabs themselves will give negligible security. The Sub Major can be fitted in these situations but only by removing some blocks/slabs and digging down into the ground below.
Our approval certificates are available online.