advantages of cavity walls

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ADVANTAGES OF CAVITY WALLS PRESENTED BY : MOHD KHALID SHAIKH : 120770106114 GITANGALI PANDEY : 120770106115 MANAN SETH : 120770106116 SUBMITTED TO : BUILDING CONSTRUCTION DEPT. CIVIL DEPT. , 4TH SEM SOCET 2014

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Page 1: ADVANTAGES OF CAVITY WALLS

ADVANTAGES OF CAVITY WALLS

PRESENTED BY :MOHD KHALID SHAIKH : 120770106114GITANGALI PANDEY : 120770106115MANAN SETH : 120770106116

SUBMITTED TO : BUILDING CONSTRUCTION DEPT.CIVIL DEPT. , 4TH SEMSOCET2014

Page 2: ADVANTAGES OF CAVITY WALLS

OBJECTIVESOBJECTIVES

– Benefits of cavity walls over solid walls.Benefits of cavity walls over solid walls.– Name different components used in cavity walls Name different components used in cavity walls

and there use.and there use.

Page 3: ADVANTAGES OF CAVITY WALLS

Main functions of walls

1.Strength

2.Stability

3.Weather exclusion

4.Thermal Insulation

5.Sound Insulation

6.Durability

7.Fire resistance

8.Appearance

Part of a cavity wall with the internal skin removed to expose the Insulation

Page 4: ADVANTAGES OF CAVITY WALLS

CAVITY WALL:

• Cavity walls consist of two 'skins' separated by a hollow space.

• The skins are commonly masonry such as brick or concrete block.

• Masonry is an absorbent material, and therefore will slowly draw rainwater or even humidity into the wall.

• The cavity serves as a way to drain this water back out through weep holes at the base of the wall system or above windows, but is not necessarily vented

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CAVITY WALL INSULATORS :

• Cavity wall insulation is used to reduce heat loss through a cavity wall by filling the air space with material that inhibits heat transfer

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CAVITY WALL INSULATORS :

• The Government regards cavity wall insulation as one of the most effective energy saving measures that you can carry out to your home and as well as saving you money it helps reduce emissions of carbon dioxide, the main greenhouse gas causing climate change.

• This is because up to 35% of the heat loss from your property is through the walls.

Page 7: ADVANTAGES OF CAVITY WALLS

Return corner of a cavity wall in stretcher bond including wall ties and DPC

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Page 9: ADVANTAGES OF CAVITY WALLS

WALL TIES :

• Wall ties ensure that the wall leafs do not Wall ties ensure that the wall leafs do not part away from each other, effectively part away from each other, effectively splitting the two leaves. The normal splitting the two leaves. The normal spacing of the ties is laid down in the spacing of the ties is laid down in the Building Regulations.Building Regulations.

Page 10: ADVANTAGES OF CAVITY WALLS

Wall Ties

There are a large variety of different types of wall ties, but they all have two basic requirements of:-

1 .Tieing the outer and inner leaf of the cavity wall together.

2 .Prevent moisture passing from the outer to the inner skin of brickwork.

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Cavity walls in block construction

Page 12: ADVANTAGES OF CAVITY WALLS

Cavity walls in brick construction with insulation

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Page 14: ADVANTAGES OF CAVITY WALLS

Advantages of Cavity walls.Advantages of Cavity walls.

• The moisture cannot enter from outer wall to The moisture cannot enter from outer wall to inner wall , since there is no direct contact.inner wall , since there is no direct contact.

• Provide good insulation aganist sound.Provide good insulation aganist sound.• Protection aganist efflorescence.Protection aganist efflorescence.• Proves economical during construction.Proves economical during construction.• Load on the foundation is reduced.Load on the foundation is reduced.• Reduction of heat transfer ,since air layer Reduction of heat transfer ,since air layer

between leaves acts as non-conductor of between leaves acts as non-conductor of heat.heat.

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