By Prashant Gaikar....(101010065)By Prashant Gaikar....(101010065)

BONDS IN BRICKSBONDS IN BRICKS

StretcherStretcherA brick which is laid in a way that allows only the A brick which is laid in a way that allows only the longer side of the brick to be exposed. longer side of the brick to be exposed.

Flemish BondFlemish Bond

Alternate bricks are placed as header and stretcher inAlternate bricks are placed as header and stretcher in

every course. Each header is placed centrally between every course. Each header is placed centrally between

the stretcher immediately above and below. This is not the stretcher immediately above and below. This is not

as strong as the English bond at 1 brick thick . Can be as strong as the English bond at 1 brick thick . Can be

successfully applied in cavity wall.successfully applied in cavity wall.

English BondEnglish BondAlternative courses of headers and stretchers; one Alternative courses of headers and stretchers; one header placed centrally above each stretcher. header placed centrally above each stretcher. This is a very strong bond when the wall is 1 brick thick This is a very strong bond when the wall is 1 brick thick (or thicker). (or thicker). One of the strongest brickwork bond patterns.One of the strongest brickwork bond patterns.

Stretcher BondStretcher Bond

Easiest bond to lay & minimizes the amount of cutting Easiest bond to lay & minimizes the amount of cutting

requiredrequired

Originally used for single brick walls, now called 1/2 Originally used for single brick walls, now called 1/2

brick walls it became the obvious choice for cavity brick walls it became the obvious choice for cavity

walls as less cutting was required.walls as less cutting was required.

Raking BondRaking Bond

Herringbone and diagonal bonds can be effective Herringbone and diagonal bonds can be effective

within an exposed framed construction, or contained within an exposed framed construction, or contained

within restraining brick courses.within restraining brick courses.

English Garden Wall BondEnglish Garden Wall Bond

An alternative version of English bond with header An alternative version of English bond with header

courses being inserted at every fourth or sixth course. courses being inserted at every fourth or sixth course.

This is a correspondingly weaker bond.This is a correspondingly weaker bond.

Suitable for free standing wall.Suitable for free standing wall.

Common / American BondCommon / American Bond

A brickwork pattern in which all rows are stretchers,A brickwork pattern in which all rows are stretchers,

except an eighth row of headersexcept an eighth row of headers

Flemish Garden Wall BondFlemish Garden Wall Bond

In this variant of Flemish bond, one header is placed In this variant of Flemish bond, one header is placed

at every third stretcherat every third stretcher

Running BondRunning Bond

Consist of all stretchersConsist of all stretchers

No header used in this bond so metal ties are usedNo header used in this bond so metal ties are used

Cavity wall construction & veneered walls of brickCavity wall construction & veneered walls of brick

ZIGZAG BondZIGZAG BondIt is a purely decorative bond. It is a purely decorative bond. It is used in floor and wall panels.It is used in floor and wall panels.

Used where bricks of different thickness are to Used where bricks of different thickness are to be used.be used.

Header course is provided with several Header course is provided with several stretcher courses.stretcher courses.

FACING BONDFACING BOND

DUTCH BONDDUTCH BOND

Alternate courses of headers and stretchers are Alternate courses of headers and stretchers are provided as in english bond.provided as in english bond.

Every strechers course starts at the quoin with Every strechers course starts at the quoin with a three-quarter bata three-quarter bat

In every alternate stretcher course a header is In every alternate stretcher course a header is placed next to the three-quarter brick bat placed next to the three-quarter brick bat provided at the quoin.provided at the quoin.

WALL FAILUREWALL FAILURE

Vertical bowing and horizontal bending or Vertical bowing and horizontal bending or

collapse of wall is usually caused by the wall collapse of wall is usually caused by the wall

not resisting vertical pressures from foundation not resisting vertical pressures from foundation

or upper floors & roofs or horizontal pressures or upper floors & roofs or horizontal pressures

from strong winds and retained earth.from strong winds and retained earth.

Usual cause for failure of wall are as follows:Usual cause for failure of wall are as follows:

- Overloading the wall, deflection of beam - Overloading the wall, deflection of beam

above the wall will effect the wall below.above the wall will effect the wall below.

- Foundation failure - Foundation failure

- Earthquake- Earthquake

- Timber pest damage weakened the timber - Timber pest damage weakened the timber

wallwall

- Poor workmanship (improper brickwork)- Poor workmanship (improper brickwork)

Brick Wall CrackBrick Wall Crack

Brick Wall Failure At The Roof LevelBrick Wall Failure At The Roof Level

Cracked WallCracked Wall

Failure In Brick WallFailure In Brick Wall

Dry Rot On Timber Wall PanellingDry Rot On Timber Wall Panelling

By Prashant Gaikar....(101010065)By Prashant Gaikar....(101010065)

Wall Failure Due To EarthquakeWall Failure Due To Earthquake