soil gradients around building perimeters by constructing ample
slopes away from the foundation for a distance of three to four
feet. Soil should be a predominantly clay material which is
capable of shedding surface water; a sand, sandy loam or other
porous material should not be used.
A swale or
drainage channel is normally included between properties. This
feature should never be altered by addition of fill material or
blocked by construction of landscaping, structures, etc.
levels against the perimeter beam should be no closer than two
inches from brick ledge for a slab type foundation. With a pier
and beam foundation, soils should be approximately halfway up
the side of beams.
and downspouts can greatly assist in implementing a moisture
control program. Downspouts should have extensions with splash
blocks to reduce erosion and should discharge onto the ground at
least three feet away from the structure.
edging or curbs near the foundation may trap water. These beds
should be filled with soil to prevent ponding or in some cases
area drains may be necessary to discharge this moisture.