Mount Commonly Used
Stability
Cost
Install Time
Labor
Substrate
Site Impact
SCIGN mount
med-high
$150
1-2 d
1
BR
low
| Back to comparison table |
Mount Commonly Used
|
Stability
|
Cost
|
Install Time
|
Labor
|
Substrate
|
Site Impact
|
|
SCIGN mount |
med-high |
$150 |
1-2 d |
1 |
BR
|
low |
The shallow foundation mast consists of a 1.25"-diameter threaded stainless steel mast cemented or epoxied into bedrock or cement. The height may vary; shown here is an ~5" long mast cemented about 20" deep into bedrock. This style of mast has been used throughout the EarthScope Rio Grande network in Colorado and New Mexico, and for GGN sites FALK (Faulkland Islands) and ABPO (Madagascar).
Site RG23 of the Rio Grande network, Colorado and New Mexico.
Inexpensive (approximately $150 for basic materials)
Materials are readily available
Small footprint, low-profile
Can only be installed in solid material
Requires heavy-duty hammer drill
A heavy-duty hammer drill is required for installation.
None.
Nicole Feldl of UNAVCO drills the post hole with a gas-powered drill.
$150
This cost is for the monumentation only; the antenna mount (e.g. SCIGN mount) is not included.
1.25" stainless steel schedule 40 pipe (cut to preferred length)
cement or concrete or epoxy
heavy-duty hammer drill and drill bit(s)
measuring tape or measuring stick
tube to blow rock flour out of the hole
bucket for mixing cement or concrete
level
compass
A SCIGN mount is required if using a SCIGN radome. If not using a SCIGN radome, a mount such as the SECO 2072-series stainless steel antenna mount is a more economical solution.
Article ID: 327
Created: May 3, 2012
Last Updated: May 3, 2012
Author: Beth Bartel
Online URL: https://kb.unavco.org/article/shallow-foundation-mast-overview-327.html