Use the standard 2×4 framing lumber to make a wood frame.  To make the job easier, the slab was poured in two sections.  Also, a slight slant to the frame was done so the water would drain away from the house during our famous rainy season. The start was to put some gravel on the bottom to not only level the landscape but also to use less mortar.  The total job took 15 50 # bags as each bag made approximately 1/3 rd cubic ft.  The slab size is 6′ x 3′ x 3.5″.  Emptying a 50# bag into a mixing tub, adding water, and mixing with a mortar hoe is all it took.

Smoothing out the top was a matter of using a mortar trowel.

Prior to pouring the mortar, two anchors were placed  to allow  the generator to be chained down and locked which prevents theft.  Generators if not locked down in place seem to grow legs and walk in Florida during our wonder annual hurricane season.

After removing the wood framing, a belt sander was used to smooth out the edges.  Using a belt sander prior to the mortar being completely cured makes the job easier.

Now the slab is ready.  A week to cure should provide more than sufficient strength to hold generator and whatever else can be placed on the slab.