Pistol brick
Two types of pistol brick. On the left, laid as a 'soldier' with a deep rebate and downstand that may be used to conceal a concrete toe; on the right, laid as a 'stretcher' which may be used to conceal a supporting steel angle. |
When brickwork is used as a cladding – whether to clad concrete- or steel-framed buildings, or low-rise cavity-wall construction, the bricks must be supported and tied back to the structure. This is often achieved with the use of steel angles, lintels, concrete toes or edge beams. Onto these are placed specially-made ‘pistol’ bricks (or rebated bricks) that conceal the method of support and the mortar bed.
This is due to the rebate cut it into the base and which creates a small downstand that conceals the support and the mortar joint. The result is a flush appearance.
A pistol brick gets its name from its pistol shape.
Pistol bricks can either be laid as stretchers (horizontally) or ‘brick-on-edge (vertically, as ‘soldiers’). The depth of rebate will depend on how the brick is arranged and the supporting construction. For example, when supported on a concrete toe that is 50mm deep, the rebate that will be cut into a soldier brick will be 50mm + 10mm (mortar joint) = 60mm deep. If a standard brick length is 215mm, this will leave a brick ‘body of 155mm. Between every third or fourth brick, there must usually be some form of metal tie restraint to tie the bricks back to the structure.
Because pistol bricks are special bricks and involve a change from normal brick dimensions, they involve first, special manufacture (and so higher costs) and second, a longer lead-in period until they can be delivered to the site. These factors must be weighed-up by the designer against the importance placed on the finished effect.
When considering whether to opt for pistols or any other type of brick, specifiers should consult with the brick manufacturer to ensure that what they propose can be feasibly manufactured in the timeframe required and for the available budget, and that it embodies no obvious in-use failure points.
[edit] Related articles on Designing Buildings Wiki
Featured articles and news
Not buildings. Happy holiday from DB.
Improving government projects with data and AI
Enabling better outcomes, efficient modern delivery and influential leadership on government projects.
BSRIA Living Laboratory Innovation Challenge
Final days for submission, closing March 29.
Windows, their frames, forms, factors and functions.
The hidden subtleties of U-Value calculations
Different contexts and what to include as variables.
A brief run down with related articles.
Electrical sector calls for safer public EV charge points
Serious concerns about electrical safety in the public domain.
Building Blocks manifesto presented to parliament
Architects Declare call in for support of five critical policies.
The four elements of project management with APM
Analysis, expectations, collaborative communication and partnerships.
City of London launches Heritage Building Retrofit Toolkit
Empowering owners to initiate necessary adaptations.
Guidance on RAAC in listed buildings
Published by Purcell, endorsed by IHBC, SPAB and C20.
Learning from the past.
Reluctance to hire people with criminal convictions revealed
Employing People with Criminal Convictions Report.
Tackling unconscious bias; Women's History Month
Personal reflections, as the last week of March approaches.