Shallow Drilled Braced Monument Overview
Shallow Drilled Braced Monument
The shallow drilled braced monument (SDBM) consists of 4-5 1"-diameter stainless steel legs in a tripod configuration epoxied into bedrock up to depths of about 5-6 feet. The legs are welded together at the top. Use the SDBM at locations where there is bedrock at or within 0.5m of the surface. Ideal bedrock is fresh or only slightly weathered, and minimally fractured/jointed. If extensive weathering and/or fracturing occur too deep, the bedrock is not suitable for this monument. The SDBM is used throughout the PANGA, BARGEN, and PBO networks.
Design and Construction
A heavy-duty hammer drill is required for installation.
$800 (not including epoxy or cement)
This cost is for the monumentation only; the antenna mount (e.g. SCIGN mount) is not included.
The materials specific to construction of the SDBM are available as a kit which can be purchased from:
Mount Commonly Used
The SCIGN mount is the antenna mount most commonly used with the shallow drilled braced monument, although it is only required when using the SCIGN radome. Otherwise, any other leveling mount, such as the SECO 2072-series antenna mount, is acceptable.
Send questions or comments to Support (supportunavco.org).
|Posted by: Beth Bartel - Fri, Sep 3, 2010 at 5:22 PM. This article has been viewed 20870 times.|
|Online URL: https://kb.unavco.org/kb/article/shallow-drilled-braced-monument-overview-301.html|