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ET107 Weather Station
9
4.
Dig a hole 2-feet-by-2-feet-by-2 feet. Lighter soils may require a deeper
hole.
5.
About 20 inches below the top of the hole, gouge a small cavity in one
wall of the hole. The cavity should be about 4 inches deep and just large
enough in diameter to insert one end of the conduit. Make certain the
cavity points in the direction from which power and communications
cables will come. For example, the cavity will point towards a valve box if
one is being used.
6.
Center the form over the hole. Adjacent to the form, drive four stakes into
the soil. Secure the leveled form to the stakes with the 8p nails.
7.
Cap the ends of the conduit with duct tape.
8.
Position the conduit then wire into place by securing the wire to nails in
the form.
9.
Fill the hole and form with approximately 0.5 yard of concrete. Screed the
concrete level with the top of the form.
10.
Center the template assembly over the conduit and press into the concrete.
11.
Put 2-by-4 spacers between the template and the top of the form. The
bottom of the bolt threads should be about 0.5 inch above the concrete
). The template must be level in two dimensions.
FIGURE 5-3. Cut-away view shows anchor bolt and conduit placement
in cement pad
Anchor
Bolt
Conduit