retard soil gas entry, all control joints, isolation joints, construction
joints and any other joints in concrete slabls or between slabs and
foundation walls shall be sealed. A
continuous formed gap (for example, a tooled edge) which allows the
application of a sealant that will provide a continuous, air-tight seal shall
be created along all joints. When the
slab has cured, the gap shall be cleared of loose material and filled with an
elastomeric joint sealant, as defined in ASTM C920-97, and applied in
accordance with the manufacturer’s recommendations.
type (French) drains are not recommended.
However, if used, such drains shall be sealed with backer-rod and an
elastomeric joint sealant in a manner that retains the channel feature and
does not interfere with the effectiveness of the drain as a water control
drains and air conditioning condensate drains that discharge directly into
the soil below the slab or into crawlspaces should be avoided. If installed, these drains shall be routed
through solid pipe to daylight or through a trap approved for use in floor
drains by local plumbing codes.