|So, be sure to
specify your anchor surface when ordering your Dome!
For all of our Dome Shelter Systems, we offer you
a wide variety of anchor options to suit every type of
surface you have. As well, our anchors have been field
tested to sustain wind resistance over 75 mph. In addition,
our sales department is well experienced in developing
custom anchors for your unique requirements. Below list
the type of anchors used by most common firm ground conditions:
Screw Rod Anchors or Augers:
Suitable for soil, sand or gravel surfaces - These anchors
vary from 17” to 47” deep with spoons measuring
between 4” to 6” across and have a pullout
rating of between 450 lbs – 4200 lbs each, depending
on soil conditions. For example, the most commonly used
27” screw rod anchors have the following pull-out
strengths in different ground conditions:
(Note: In cases where longer or
custom rods are required, an extra 2 weeks for delivery
is needed. Also, extra installation time is required if
tree roots are present. Please contact us if you cannot
install anchor to the full depth.)
- Silty Sand: 454 psf
- Packed Gravel: 650 psf
- Soil: 1200 psf
- Clay: 2300 psf
Steel Stake Anchors or Rebar
Suitable for asphalt surfaces - Our steel stake anchors
used in combination of a minimum 4” asphalt cover
on top of compacted soil below will give a pull-out strength
of 4300 psf. A pilot hole and sledgehammer is necessary
to drive these anchors.
Suitable for concrete surfaces - These large anchors with
heavy-duty brackets are used to resist extreme loads.
A drill with a masonry bit will be necessary to install
Suitable for wood dock covers or wood mounted structures
- Our hex head wood screw and steel brackets are used.
Please note the wooden sub structures must be securely
anchored to the ground.
Special Anchor Option –
Precast Concrete Block Foundations:
In cases where the ground is incapable or the ground finish
must be preserved, we also offer a raised block wall foundation
option. In addition, these block walls can be used as
a collision barrier for moving equipment functioning within
the shelter, as well as providing extra height clearance
for all your storage needs. Please contact our sales representatives
for further details.