| UNAVCO
 


Knowledge Base

Shallow Foundation Mast Overview

Shallow Foundation Mast

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.

Pros

  • Inexpensive (approximately $150 for basic materials)

  • Materials are readily available

  • Small footprint, low-profile

Cons

  • Can only be installed in solid material

  • Requires heavy-duty hammer drill

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

  • 1.25" stainless steel schedule 40 pipe (cut to preferred length)

  • cement or concrete or epoxy

Tools

  • 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

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.

Attached Files
There are no attachments for this article.
Comments
There are no comments for this article. Be the first to post a comment.
Name
Email
Security Code Security Code
Related Articles RSS Feed
IVTRAN Monuments
Viewed 2216 times since Tue, Sep 15, 2009
Threaded Monument Pin (Conquest Pin) (diagram)
Viewed 26148 times since Tue, Sep 15, 2009
How to install a polar-style GPS antenna mast
Viewed 39590 times since Mon, Dec 1, 2008
Monument Pins Overview
Viewed 14357 times since Fri, Feb 19, 2010
5/8" Stainless Steel All-thread Mast Overview
Viewed 89809 times since Thu, Feb 18, 2010
Dimpled Monument Pin ("Bevis pin")
Viewed 1744 times since Tue, Sep 15, 2009
Stainless Steel Pin with Mast Overview
Viewed 50917 times since Thu, Feb 18, 2010
Deep Foundation Mast Overview
Viewed 880 times since Fri, Jun 26, 2009
Polar Mast Overview
Viewed 12542 times since Fri, Feb 19, 2010
MENU

Last modified: Monday, 12-May-2014 00:18:29 UTC