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                                                              D R A I N A G E   D E S I G N

The leading cause of foundation cracking, settling and/or failure, and mold, dry rot and insect infestation in the crawl-space areas under a house is improper property drainage.

Engineers divide drainage into two systems; SURFACE DRAINAGE and SUBSURFACE DRAINAGE.

S U R F A C E   D R A I N A G E
  SURFACE DRAINAGE is the controlled removal of surface runoff; rain fall, landscape irrigation,
    driveway/patio wash downs, etc.

  SURFACE DRAINAGE begins with the grading of the land into a watershed that directs surface runoff to
    swales and/or catch basins.

    Surface water, if not controlled, will saturate the soil.

S U B - S U R F A C E   D R A I N A G E
  SUB-SURFACE DRAINAGE is the removal of water from the soil. Soil can only absorb so much water. As the soil
    becomes saturated water will percolate vertically and laterally and cannot be controlled by surface drains. The result
    is flooding and erosion. Subsurface water will permeate concrete and humidify and/or flood crawl spaces and
    subterranean living spaces.

C O M P L E T E   D R A I N A G E   S Y S T E M
  A COMPLETE DRAINAGE SYSTEM incorporates both SURFACE and SUB-SURFACE DRAINAGE SYSTEMS;
     -SURFACE DRAINS for the removal of rainfall, driveway/patio wash downs, landscape irrigation, etc., and
     -SUB-SURFACE DRAINS for the removal of water which percolates through the soil.

C O M M O N  D R A I N A G E   S O L U T I O N S

M O I S T U R E OR W A T E R  P U D D L I N G  IN THE  C R A W L  S P A C E  A R E A S
F L O O D I N G  OF  S U B T E R R A N E A N  L I V I N G  S P A C E S
F O U N D A T I O N  C R A C K I N G  AND/OR  S I N K I N G
  Concrete is not waterproof.
  Surface water, if allowed to puddle and sub-surface water, if allowed to saturate the soil will eventually permeate a concrete     foundation, flood subterranean living spaces and/or fill crawl spaces.
  If not corrected a foundation will deteriorate and crack, settle and eventually fail.
  Water under a house creates a humid environment in the crawl spaces areas and will cause mold, mildew,
    structural framing rot and insect infestation.
  The sub-floor areas of a house should be bone dry at all times and in all seasons.

One or a combination of the following drainage systems will solve the above problems.
SOLUTIONS:
    -FRENCH DRAIN SYSTEM
    -FOUNDATION WATERPROOFING
    -SURFACE DRAINS
    -RAIN GUTTERS
    -ROOF DRAIN SYSTEMS
    -CRAWL SPACE VENTS
    -CRAWL SPACE VENTILATION FANS


S U R F A C E  W A T E R  P U D D L I N G
One of the following drainage systems will solve moisture permeation into the crawl spaceareas.
SOLUTIONS:
    -SURFACE DRAINS
    -CONCRETE SWALES

S U R F A C E  W A T E R  F L O O D I N G
Uncontrolled surface water runoff on large concrete areas, such as driveways and parking lots, can cause flooding.
SOLUTION:
    -CHANNEL DRAINS

R E T A I N I N G  W A L L S
  Sub-surface water permeation behind retaining walls can cause, discoloration, effervesce, settling, cracking,
    leaning and eventually failure of a retaining wall.
One or more of the following drainage systems will solve moisture permeation into the sub-floor areas.
SOLUTIONS:
    -CONCRETE SWALE
    -FRENCH DRAIN SYSTEM
    -WATERPROOFING
    -WEEP HOLES

P L A N T E R  P U D D L I N G
  Surface water puddling in planters can damage existing landscaping and can eventually permeate
    through building walls and/or foundation.
One or more of the following drainage systems will solve moisture permeation into the sub-floor areas.
SOLUTIONS:
  -SURFACE DRAINS
  -FRENCH DRAIN SYSTEM
  -FOUNDATION WATERPROOFING
  -WEEP HOLES