Figure. 11
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outer outline of the base of the observatory
Securing Observatory Base to Slab
The first step is to mark location and drill holes for the fixing bolts that will secure the observatory to
the slab. Depending on the needs and quality of the concrete, a minimum of 10 holes should be pro-
vided. Drilling can be done directly through the laminate of the base halves however, care must be
taken by gently applying pressure through the drill upon the observatory surface so not to damage or
fracture the laminate.
Figure. 12
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drilling of base fixing holes
Figure. 13
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drilled holes in one of the bases of the observatory
