Shallow Foundation Mast Overview


Shallow Foundation Mast

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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.

Pros

Cons

Design and Construction

A heavy-duty hammer drill is required for installation.

Documents

None.

Installation Photos


Nicole Feldl of UNAVCO drills the post hole with a gas-powered drill.

Approximate Cost

$150

This cost is for the monumentation only; the antenna mount (e.g. SCIGN mount) is not included.

Materials

Tools

Mount Commonly Used

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 On: Thu, May 3, 2012 at 9:01 PM
Last Updated On: Thu, May 3, 2012 at 9:01 PM
Authored by: Beth Bartel [bartel@unavco.org]

Online URL: https://kb.unavco.org/kb/article/shallow-foundation-mast-overview-327.html