Run In to Pre-erected Corners, Establish Broken Bond, CORE

Build Raking Cut 1 of 5

Broken Bond

When the dimension given for a length of wall does not convert into an equal number of full bricks, cuts may have to be introduced to make up the short fall.

It is the introduction of cut bricks that is termed ‘broken bond’

In long lengths of walling it may be avoided by increasing or decreasing the size of the cross-joints. This is permitted if it does not detract from the overall appearance of the wall.

The following examples show broken bond in half brick walls:

Three quarter bat in wall

Once the position of the cuts is established, it should be maintained throughout the full height of the wall. The size of cuts must be constant and perpends plumbed to ensure broken bond remains vertical.

Where openings occur in a length of wall the broken bond should be positioned below them. They should reoccur above the opening plumb with the perpends below the opening.

Reverse Bond

If the length of wall exceeds full bricks by a half bat, it may be removed by changing the one quoin brick from a stretcher face to a header face stretcher

This may not be possible where the end quoin bricks are in a colour provide feature.

On gable ends the roof trusses will be positioned to give the angle of the raking cut,

On boundary walls the brickwork has to be raised to the full height of the raking cut by racking and toothing the wall, finishing just short of the required line of cut. The angle of cut if not given must be determined from the drawing.

1. Bed brick in position or seat on 10mm spacers.
2. Allow 10mm cross joint.
3. Transfer angle of line onto brick using pencil.
4. Cut brick to angle
5. Trim cut surface of brick with comb hammer to ensure core of brick is not proud of line
6. Bed Brick in position.

If bevel is used to mark the line of the raking cut it can be used to extend pencil lines across whole face of the brick.

When cutting the brick with a hammer and chisel you should always remove the square end of the brick before attempting cutting.

This reduces the pressure on the line of cut giving you a greater chance of a clean cut.

Deadman.

The term given to a temporary brick Pier bedded to gauge and plumbed to face of wall.

This acts as a guide and allows a horizontal line to be extended beyond the line of the raking cut.

The same result can be achieved by erecting a timber profile.