presentation on waterproofing of basement (omar faruqe hamim,l2/t1,buet)
TRANSCRIPT
THE PROCESS OFWATERPROOFING OF
BASEMENT
What is a basement ?
Floors of a building that are either completely or partially below the ground floor.
Waterproofing vs Damp-proofing
Waterproofing prevents the passage of water in the presence of hydrostatic pressure.
Damp-proofing retards the absorption of moisture in the absence of hydrostatic pressure.
Why waterproof a basement ?
Hydrostatic Pressure
Concrete cracks
Capillary Action
Vapor Transmission
Condensation
HYDROSTATIC PRESSURE
Wall Deflection
Lateral Stresses
Stress Cracks and
Floor Slab Uplift
Hydrostatic
Pressure
Hydrostatic
Pressure
Hydrostatic
Pressure
Wall
Crack
Basement Floor
Basement
Wall
Basement
Wall
HYDROSTATIC PRESSURE
Saturated Wall Assembly
Pressure
Basement Flood
Insulation/Vapor Barrier
Surface Finish Damaged
Hydrostatic Pressure can cause – Basement Flooding + Structural Damage + Property Damage
Water
Minimal Wall Protection
HYDROSTATIC PRESSURE
CONCRETE CRACKS
Foundation/Soil Settlement Concrete Shrinkage
Construction Joints
Concrete Capillaries
Water Pocket
Minimal Wall Protection
Water Intrusion
Capillary Development
Foundation Wall
Capillaries
CAPILLARY ACTION
Water Pocket
Insulation/Vapor Barrier
Saturated Wall Assembly
Mold & Mildew
Dampness on Floor
Moisture infiltration results in – Unhealthy Air + Dampness + Wall Assembly Damage
Minimal Wall Protection
CAPILLARY ACTION
65% RH45% RH
RH = Relative Humidity
Water
Vapor
55% RHWater Vapor
Minimal Wall Protection
VAPOR TRANSMISSION
What Is A Quality Waterproofing System? Preventing the passage of liquid water in
the presence of hydrostatic pressure.
Protection.
A drainage system reducing hydrostatic pressure.
Accessory products.
METHODS OF WATERPROOFING OF BASEMENT
1. Surface & Ground Water Control
METHODS OF WATERPROOFING OF BASEMENT
METHODS OF WATERPROOFING OF BASEMENT
2. Waterstops
Different Types of Waterstops
METHODS OF WATERPROOFING OF BASEMENT
Application of Waterstops at Construction Joints
3. Cementitious System
METHODS OF WATERPROOFING OF BASEMENT
METHODS OF WATERPROOFING OF BASEMENT
4. Structurally Integral Protection System
5. Tanked or Membrane System
Materials Used
METHODS OF WATERPROOFING OF BASEMENT
Applying Bitumen Primer
METHODS OF WATERPROOFING OF BASEMENT
Applying Bituminous Felt
METHODS OF WATERPROOFING OF BASEMENT
6. Drained Cavity Protection System
METHODS OF WATERPROOFING OF BASEMENT
7. Applying Ferrocement On Shore Piles
METHODS OF WATERPROOFING OF BASEMENT
METHODS OF WATERPROOFING OF BASEMENT
Applying Ferroecement Ferrocemented Shore Piles
REMEDIAL SYSTEM OF BASEMENT WATERPROOFING
REMEDIAL SYSTEM OF BASEMENT WATERPROOFING
Different Methods
GROUP 7 AT MOHAMMADPUR SITE
GROUP 7 AT KELLAR MOR SITE