Foundations and footings. Attached privates garages shall be provided
with the same type footings and foundations as required herein for
the principal building. Concrete floors shall be not less than four
inches in thickness. Detached private garages may be built with a
continuous floating slab of reinforced concrete not less than four
inches in thickness. Reinforcement shall be a minimum of six inches
by six inches, number 10 by 10 wire mesh. The slab shall be provided
with a thickened edge all around, eight inches wide and eight inches
below the top of the slab. Exterior wall curbs shall be provided not
less than four inches above the finished ground grade adjacent to
the garage. Bolts 3/8 inch in diameter with nuts and washers attached,
six inches long, shall be embedded three inches in the concrete curb
of detached garages, eight feet on centers.