Basic Civil & Mechanical Engineering: UNIT III: h. Flooring
Damp-proof course (d.p.c.)
Causes, Effect, Damp Proof Materials, Properties
Damp-Proof Course (D.P.C.) is provided to prevent the entry of dampness or moisture from the floors, walls and basement of the building into the building.
DAMP-PROOF COURSE (D.P.C.)
Damp-Proof
Course (D.P.C.) is provided to prevent the entry of dampness or moisture from
the floors, walls and basement of the building into the building. Therefore,
the building is kept dry, safe and habitable (livable).
1. CAUSES OF DAMPNESS
1.
Entry of Rain Water: Entry of moisture may be caused due to
leakage of rain water through the roof or through the exposed tops of parapet
walls and compound walls.
2.
Defective Roofs: Defective construction joints in the
roof will cause dampness.
3.
Entry of Moisture from the Soil: Building materials
used in the foundation may absorb moisture from the pervious soil by capillary
action. This will cause dampness to the floor and walls.
4.
Atmospheric Moisture: Deposition of atmospheric moisture on
walls, floors or ceilings also causes dampness.
5.
Defective Drainage System: Defective drainage system is also
another reason for dampness.
2. EFFECT OF DAMPNESS
1.
Corrosion: Dampness leads to corrosion of steel
reinforcement rods in the concrete.
2.
Electrical Fittings: Dampness causes damage of
electrical fittings.
3.
Growth of Termites: Dampness may cause acceleration of
growth of termites.
4.
Patches: Dampness causes formation of patches on
the surfaces of floors, walls and ceilings.
5.
Health Problems: A damp building causes unhealthy
conditions for the occupants.
3. DAMP PROOF MATERIALS
D.P.C.
materials are Mastic Asphalt, Hot
Bitumen, Flexible Metal Sheets made of Aluminium, Lead or Copper.
4. PROPERTIES OF D.P.C. MATERIALS
These
materials are impervious and flexible. They are durable and remain effective
during the life of the building. Also, they safely resist the load coming on
them.
Basic Civil & Mechanical Engineering: UNIT III: h. Flooring : Tag: : Causes, Effect, Damp Proof Materials, Properties - Damp-proof course (d.p.c.)
Basic Civil & Mechanical Engineering: UNIT III: h. Flooring
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Basic Civil and Mechanical Engineering
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