Types Of Brick Bonds 1o726c

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TYPES OF BONDS

Types of bonds There are a great number of possible bond arrangements, some used more commonly than others. Here are some or the more common types of bonding arrangements. Stretcher bond Stretcher bond consists of all bricks laid as stretchers on every course with subsequent courses laid half bond to each other, except at return angles and stopped ends. In a plain wall with stopped ends, this bonding arrangement can be brought about by introducing a half bat as the starting brick on alternate courses. This type of bond is used in walls half a brick in thickness. Half Bond

Front elevation

Plan of course 1

Plan of course 2

Brick corner or quoin

Return angle

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Stretcher bond The following drawings show alternative bonding arrangements for forming a right angled junction in stretcher bond.

Three-quarter Three-quarterbats bats

This method is the simplest and uses three-quarter bats to maintain the bond

Mitred bricks

This method is more complicated and involves cutting bricks to form mitres so that the half bond can be maintained

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TYPES OF BONDS

English bond Solid brick walls Walls built in English bond are very strong because no straight ts occur in any part of the wall. Alternate courses of headers and stretchers produce quarter bond, and because of its somewhat monotonous appearance, it is used where strength is more important than appearance. To achieve and maintain quarter bond, a queen closer must be laid next to the quoin header. 1½-brick walls have two faces and a line should be used on both sides. Attention to the following points helps to maintain a good standard of work. • Cut queen closers neatly and keep them regular in size. • Keep perpends uniform and plumb because large cross ts soon lose quarter bond and can bring straight ts on the face. • Remove mortar from the back of the bricks against the collar t as it can prevent the backing up from being laid level. • When backing up, avoid the use of too much mortar near the collar t; when backing up it could cause the face bricks to move out in front of the line.

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English bond Straight walls

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English bond Junctions

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Flemish bond Flemish bond consists of courses of alternate headers and stretchers with the headers in one course placed centrally over the stretchers in the course below. A closer is placed next to the quoin header to form the correct quarter bond. Straight walls

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Flemish bond Quoins

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Flemish bond Junctions