This document discusses various materials and methods used for damp proofing in construction. It describes that a damp proof course (DPC) is used to prevent moisture from passing into interior spaces. Common materials used include polythene sheets, EPDM membranes, mortar with waterproofing compounds, and occasionally expensive metal sheets. Polythene sheets are typically laid with 150mm overlaps and sealed at the joints when used under concrete. EPDM has properties that make it suitable such as flexibility and chemical resistance. Metal sheets can be used but are costly and must be coated to prevent chemical reactions. The document provides information on properly installing and applying these various damp proofing materials and methods.
Damp is generally defined as unwanted water or moisture.
Dampness is the access and penetration of moisture content into building through its wall, floor, roof etc.
The existence of dampness in buildings is one of the most damaging failures that can occur in buildings.
Every building should be damp proof.
The main idea of damp-proofing is to protect buildings against the damaging action of water and humidity that act negatively upon constructions.
Neither humans nor buildings can tolerate too little or too much of water.
Excess water in buildings is called Dampness. The root of all evil is water.
In construction, a building or structure is waterproofed with the use of membranes and coatings.
Oil-based waterproofing is generally used for roof leakage after construction and uses only on the wall like a primer.
Moisture can also affect the health of occupants typically through the potential for breeding harmful organisms.
On the other hand, moisture reduces the shrinking cracks of wood and furniture, and up to a point, is necessary to avoid respiratory discomfort.
Thus, moisture is both a necessary constituency of our built environment and a potential liability.
The issue, then, is not to eliminate moisture from our buildings, but to control it and its movements.
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Water leakage causes damage to structures and its contents Reinforcement corrosion , delamination, accelerated aging and increased maintenance costs are all serious concerns
Application design requirement specification for water demand , and water seepage study and investigation to locate the source of the seepage will reduce future damage to the structure and reduce maintenance costs. There are many reasons for water
leakage in buildings, some cases are caused by defective water pipes, sanitary fittings or drainage pipes or rain water leakage from roof and walls . Water leakage may come from dilapidated pipes in adjacent flats or even from inside the same flat. It may also be due to water seeping through common areas, such as the roof or external walls due to poor workmanship or inadequate design.
If water leakage is found in roof or walls or water supply or sewerage pipes and fitting and fixtures a proper investigation of the cause needs to be carried out
Damp is generally defined as unwanted water or moisture.
Dampness is the access and penetration of moisture content into building through its wall, floor, roof etc.
The existence of dampness in buildings is one of the most damaging failures that can occur in buildings.
Every building should be damp proof.
The main idea of damp-proofing is to protect buildings against the damaging action of water and humidity that act negatively upon constructions.
Neither humans nor buildings can tolerate too little or too much of water.
Excess water in buildings is called Dampness. The root of all evil is water.
In construction, a building or structure is waterproofed with the use of membranes and coatings.
Oil-based waterproofing is generally used for roof leakage after construction and uses only on the wall like a primer.
Moisture can also affect the health of occupants typically through the potential for breeding harmful organisms.
On the other hand, moisture reduces the shrinking cracks of wood and furniture, and up to a point, is necessary to avoid respiratory discomfort.
Thus, moisture is both a necessary constituency of our built environment and a potential liability.
The issue, then, is not to eliminate moisture from our buildings, but to control it and its movements.
Presentation by
Primary Information Services
www.primaryinfo.com
mailto:primaryinfo@gmail.com
Download PDF Version at
https://www.slideshare.net/thorapadi/presentations
See YouTube Channel
https://www.youtube.com/user/ch600091/videos?view_as=subscriber
Water leakage causes damage to structures and its contents Reinforcement corrosion , delamination, accelerated aging and increased maintenance costs are all serious concerns
Application design requirement specification for water demand , and water seepage study and investigation to locate the source of the seepage will reduce future damage to the structure and reduce maintenance costs. There are many reasons for water
leakage in buildings, some cases are caused by defective water pipes, sanitary fittings or drainage pipes or rain water leakage from roof and walls . Water leakage may come from dilapidated pipes in adjacent flats or even from inside the same flat. It may also be due to water seeping through common areas, such as the roof or external walls due to poor workmanship or inadequate design.
If water leakage is found in roof or walls or water supply or sewerage pipes and fitting and fixtures a proper investigation of the cause needs to be carried out
A ready-to-use, liquid damp-proof
membrane which provides a seamless,
passive radon barrier.
It also acts as a barrier against the
gases methane and carbon dioxide.
Special Treatments required for building constructionUjasPandya2
various special treatments like termite treatments, damp proofing, fire protections, acoustics etc required in building construction in civil engineering. Essential treatments before and after construction of residential as well as public buildings. Services essential for building construction for maintenance and long life of building
Learn everything about car park protection at http://marispolymers.com/products/flooring-systems/waterproofing-car-parking-flooring-systems/
Maris polyurethane products offer great car park protection. Highly permanent elastic membranes with excellent mechanical,thermal and UV resistance properties.
Waterproofing sealants are materials that are applied to surfaces and joints to create a barrier against water infiltration. They are commonly used in various construction applications, including roofs, windows, doors, bathrooms, and basements. Here are some key points about waterproofing sealants:
Contact Information
Durotech Industries, 14 Essex Street Minto NSW 2566 Australia
02 9603 1177
sales@durotechindustries.com.au
https://www.durotechindustries.com.au/
Waterproofing describes making an object waterproof or water-resistant.
Building water-proofing is a process which is designed to prevent water from penetrating a building.
Usually extensive waterproofing measures are added to a building at the time of construction, to provide moisture control from the start
Waterproofing may also be done after a building is built, to address problems as they emerge or as part of a building retrofit
Internal areas that are waterproofed include :
bathrooms,
shower recesses,
laundries
toilets.
This includes different method of treatments given in the time of building construction like : Anti termite treatment, water proofing, fire proofing, acoustical architectural, thermal insulation etc.
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1. DPC IN FOUNDATION
SOURCES:
ULTRATECH CEMENT WIKIPEDIA RUSSETTS
Damp proofing or a Damp-Proof in construction is a type of
moisture control applied to building walls and floors to prevent
moisture from passing into the interior spaces. Surface on
which dpc to be installed should be thoroughly clean and wetted.
Polythene. -proof membrane with
d lapped 150 mm at joints and continued across
the thickness of the wall.
EPDM
EPDM stands for Ethylene Proplyene Diene Monomer
Characteristics of EPDM damp proof course membrane lend itself
perfectly to the job:
• Exceptional contraction and expansion characteristics with up to
400% elongation
• Temperature stable from -40°C to +120°C
• Excellent chemical resistance
• Will not discolour masonry
• Life expectancy of over 40 years
• Contains no environmental pollutants
Polythene or polyethylene sheet is commonly used as a damp-proof membrane with oversite concrete for all but severe
conditions of dampness.
Installation:-
When used under concrete oversite the sheet should be laid on a blinding layer of sand or compacted fuel ash spread
over the hardcore.The sheets are spread over the blinding an d lapped 150 mm at joints and continued across
surrounding walls, under the dpc for the thickness of the wall.Where site conditions are reasonably dry and clean, the
overlap joints between the sheets are sealed with mastic or mastic tape between the overlapping sheets and the joint
completed with a polythene jointing tape.
Mortar with Waterproofing Compounds
Concrete of thickness (min 25mm) (ratio 1:1.5:3) with suitable water
proofing compound (recommended shall be mixed). After hardening
of concrete layer a thin layer of sealant dry which is a cement paste
waterproofing compound has to be applied in 2 coats perpendicular
to each other with group of 4hrs betweem the cords
MATERIALS
INTRO
3
4
2
1
Butyl Rubber Hot Bitumen Mastic asphaltPolythene sheet Impervious Brick
Metal Sheets
Metal sheets of Copper, Aluminium, or Lead are used to prevent
dampness, but they are costly.Sheets of these materials are used
throughout the thickness of the wall.The sheets of Lead are laid over
Lime Mortar and not with Cement.Mortar due to the chemical reaction
of Cement over the Lead.The sheets of metal should be coated with
asphalt.The thickness of the sheets should not be less than 3mm.
ANAND KASAUDHAN
SUBMITTED BY:
ANURAG MAHAJAN
MOHIT GUPTA
SAHIL VERMA
YASH SRIVASTAV
Department of Architecture and Planning