2 May 2010

Dale's Herringbone

This post shows how a Herring-Bone Panel is designed and built. Dale is a Level 1 student and has only been laying bricks since Sept '09


Photo taken 19th May '10


Photo taken 5th May '10
This consists of bricks which are laid at 90 degrees to each other, but at 45 degrees to the horizontal plane. Such patterns may be laid vertically or horizontally


Image and text from: Nash (1988) Brickwork Vol 2 pg 76
When panels are being built with herringbone bond, great care should be taken to ensure that each pattern is kept truly level and plumb. This is done by ensuring that all of the angles are maintained in a straight lines


Image and text from:
Hodge (2006) Brickwork for Apprentices pg 96
Note the method for setting out the herring-bone bonds

This ensures cut bricks of the same size on all sides of the panel

For a small panel, the setting out must commence from the centre

For a long narrow area, the setting out can begin from the bottom

Image and text from: BDA (2005) Guide to Successful Brickwork pg 138
Build the surrounding brickwork accurately to the correct height, level, plumb and gauge. Ensure the tops of the reveals are at the same level.

Keep the opening width constant for the whole height. This is best done with a Pinch-Rod rather than relying on the plumbing.


Image and text from: BDA (2005) Guide to Successful Brickwork pg 138
On the board, mark horizontal, vertical and 45° lines through the centre point. This gives the position of the first bricks to be placed in the setting-out process.

Starting with two bricks, place all the bricks dry and accurately on the board. Any inaccuracy at this stage will be reflected in the built panel.


Image and text from: BDA (2005) Guide to Successful Brickwork pg 138
Next, transfer the outline of the board to the bottom and two sides of the dry bricks and cut the bricks to shape.


Photo taken 22nd April '10
To ensure accuracy, each cut-brick was numbered and returned to the board. The bricks were then removed as the panel was built


Photo taken 22nd April '10
After cutting the bricks to shape, place a gauge rod (cut to the width of the opening) along the bottom of the dry panel and mark the position of the cut bricks. Use the gauge rod as a template to position the bricks in the first course.


Image and text from: BDA (2005) Guide to Successful Brickwork pg 140
The laying of herringbone bond must be controlled at an angle of 45°. Traditionally a ‘boat level’ and 45° set square were used, but ‘boat levels’ are now available with adjustable vials


Photo taken 23rd April '10
Notice the position of the string line. This ensures each brick is laid accurately to gauge, level and plumb

Weep-holes were used, when setting-out this panel, to provide an accurate 10mm gap for all the mortar joints


Photo taken 23rd April '10
The BDA book also recommends the following:

Run a level line to control the top of each course. Lay the last row temporarily and mark them with a chalk line, level with the top of the reveals, and cut accurately.

Ensure mortar is of the right consistency to avoid staining from wet mortars and so that the bricks can be gently ‘rubbed’ into position.

Tapping or knocking down bricks is likely to disturb the work below far more in angled brickwork than in normal work.


Image from Google Search
The word 'herring-bone' comes from the skeleton of a fish. As can be seen the slanted lines form a dense pattern of chevrons. This pattern has been used in construction since the Romans and its technical term is Opus


Circular brick path built by Anne, 1988
It is very common in brick paving, timber floors and also woven fabric. In fact, someone has published a blog, just about the use of Herring-bone in Interior Design

This photo needs some text


Image from Google Search

In Brickwork, there are 3 main variations of this bond, each of which can have double bricks instead of the single bricks



Diagonal Herring Bone


Horizontal Herring Bone


Vertical Herring Bone


Double Diagonal


Double Horizontal


Double Vertical


This text needs formatting...Other alternatives are created by using different ratios. With standard bricks, the length of 1 stretcher is the same as 3 headers. For paving bricks, that ratio is often 1:2. As can be seen, American bricks are different again

30 April 2010

Perry's Fireplace


Image from: BDA (2005) Successful Brickwork pg 157
The idea came from the Brick Development Association book
First, a full-scale plan was drawn, to determine the size of the circles and the shape of the cuts


Photo taken 22nd April '10
The circumference was then transfered to the working area and the radial headers cut according to the template


Photo taken 22nd April '10
The base was formed by three courses of these radial headers


Photo taken 23rd April '10
The soldiers were set-out and dry-bonded to ensure they would work without having to cut the bricks. There was a 30mm oversail and the curve was formed by the wedge-shaped joints


Photo taken 30th April '10
These soldiers were regularly checked to ensure they were exactly up-right and plumb


Photo taken 30th April '10
The hearth is now ready to be filled with concrete


Photo taken 5th May '10
To be continued...


15 April 2010

Laying Blocks with Dean

Ensure there is sufficient mortar for the bed-joint, then create a furrow























Ease the block into the correct position by lining up the arris with the previous block. Ensure that the perp-joint is 10mm and that the top arris is laid exactly to the line

17 March 2010

Perry's Competion

This my finished work for my competion
 
Setting out the brickwork, checking it is level and plumb. 
This is the back.
 
This is halfway up, but the top red stretchers were replaced because they were surposed to be indented. 
both picture below and above show the back of the finished piece.
This piece took me a total of 20hrs

All the photos and text were composed Perry Spencer

3 March 2010

Setting the Corner

These pictures illustrate how to ensure the corners are correct. As can be seen, the brick is levelled both ways. The plumbing point is then checked and the brick is eased into position, so that the bubble is in the right place


Laying Courses to Gauge

This picture illustrates how to check that each course is laid to gauge by measuring...

Laying to a Line

This shows the process...For example, laying mortar on the bricks, striking off the excess, creating a furrow, placing the arris to the line, etc...




Buttering a Header

These pictures show two different methods of ensuring a full joint, while keeping the bricks clean

Half-Round Pointing

These pictures show the process of pointing using a half-round jointer. As can be seen, the perps are done first, then the bed-joints. Any burrs are cleanly stuck off