News — Spiral

With a plethora of screw-in tent pegs or tent stakes out there, why would auger spiral screw in pegs be any better than just a screw-in tent peg like that of those based on a coach bolt or longer speed hex screw design?
GroundGrabba ground anchors are designed based on an auger.

Let's start by taking a look at the two different basic designs.

 

Coach Bolt     

 

 

   Auger Style Ground Graber Pro I

You'll notice that the coach bolt design has a thread that looks like it has been cut into the shaft whereas the auger spiral screw in peg like the GroundGrabba Pro I has what is called 'flights' which are hand welded to the shaft and clearly spread out from the shaft.

This has a significant effect for ground holding. In fact a good quality ground anchor like the GroundGrabba products are made for the purpose of holding the ground with superior performance to that of a traditional hammer-in tent peg.

SHOP NOW 

Why is the performance better from an auger spiral screw in peg design?

Because the flights spread out under the ground, they perform kind of like tree roots and effect the surrounding ground which become part of the anchoring process.  A coach bolt or elongated screw is not more than a spike peg like have been used for thousands of years.  These do not use a larger area around the peg to help anchor but rely on the area of earth touching the shaft.

Ground holding ability relies on several factors such as;

• Ground type
• Ground density
• Wet or dry ground
• Type of peg, stake or ground anchor used
• Substrate in direct contact on the shaft
• Depth of the shaft
• Angle of load, vertical lift or angled tension

Take a look at the images below, one represents a spike stake or a typical tent peg design in a vertical lift situation and the other an auger design such as our Ground Grabba Pro II.

Notice how the spike stake design has little additional holding from the surrounding earth compared to the Ground Grabber which shows a kind of inverted cone shape of earth weighing down on tp of the flights (wings or spirals).

Steel spike style hammer in tent peg above.

A Ground Grabber auger spiral screw-in peg above.

What Effects the Holding Power of the Auger Spiral Screw in Peg?

There are a few factors you'd want to think about to determine how much holding power you want.

Depth is probably the main thing though.  Substrate density is another. One more is the width of the flights.  

The deeper the spiral auger is and the wider the flights, the greater it will anchor down.

Check out our hold down test results here>>>

Ground Grabbers come in various models of augur spiral screw in pegs and can be used for recreational purposes like camping to commercial uses like holding horse jumps, signs, trampolines, outdoor furniture, pets and many things needing to be held down outdoors.

We even have a commercial range of augur spiral screw-in pegs with thicker shafts for higher loads like festival tents, tiny homes, emergency housing, relocatable homes, ground mounted solar, communication masts and towers and more also.

GroundGrabba Pro (300mm) Hot Dipped Galvanised (HDG) 1008 carbon steel 

GroundGrabba Pro I (450mm) HDG 1008 carbon steel

GroundGrabba Pro II (600mm) HDG 1008 carbon steel

GroundGrabba Lite (400mm) Reinforced Nylon (recreational grade)

GroundGrabba Commercial Pro (450mm) HDG 1008 carbon steel

GroundGrabba Commercial Pro I (600mm) HDG 1008 carbon steel

GroundGrabba Commercial Pro II (900mm) HDG 1008 carbon steel

 

Perhaps you have a more permanent structure like a garden sculpture or a park bench that you need to secure to the ground but the anchor hole is of a small diameter, then we have a range of threaded auger spiral screw in pegs that might be suitable for you. 

Here are some other ideas for uses in other applications>>>

 

If you have any questions about our Ground Grabber screw in auger style ground anchors, tent peg stakes use this contact page.

 

SHOP NOW