ViaSat 8010 Series, Руководство по подготовке площадки

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Chapter 1 - General Information
1.3 Foundation Design and Construction
Antenna foundation preparation is critical to antenna performance. It is
imperative that competent engineering assistance be engaged to assure that
the foundation is properly designed for the local site conditions and building
codes. This applies to the included foundation plans, as well as to any custom
foundation design which may be required.
Since soil and environmental conditions, building codes,
installation practices, and other factors vary among different
localities, those persons installing antenna mounts are
cautioned to secure professional engineering services for the
design and construction supervision of antenna mount
foundations.
The antenna mount anchor bolt orientations and foundation
loads tables are furnished to be used to establish required
dimensions and location of bolts relative to one another and as
a guide to antenna mount characteristics that must be
considered in the professional design of a foundation.
ViaSat does not represent, nor recommend, that any particular
design or size of foundation is appropriate for any particular
locality or installation.
1.3.1 Orientation
The foundation heading establishes the center of azimuth travel of the
antenna, and determines the ability to point the antenna to the desired
satellites. The foundation must be oriented such that the desired satellite
pointing angles can be achieved within the chosen azimuth sector or sectors.
A true north-south reference may be established by reference to:
•
a magnetic compass heading (corrected for declination or variation),
or
•
a survey from registered benchmarks, or
•
a sighting of Polaris (North Star).
The survey should be performed by a qualified surveyor, since it is used to
position the foundation pad and to establish the heading of the foundation
anchor bolt pattern.
42S045D 1-2