Red Seal Bricklayer Practice Exam

What is a 'skew back' in brickwork?

1. A vertical support for brick columns

2. A sloping face allowing the arch to rest securely

3. A method of cutting bricks for fitting

4. A type of decorative brick pattern

The correct answer is: A sloping face allowing the arch to rest securely

A 'skew back' in brickwork refers to a sloping face that allows an arch to rest securely. In masonry, when constructing arches, the skew back is essential because it provides the angular surface that supports the ends of the arch, ensuring that the weight of the arch is properly transferred to the structure. This design feature is crucial for stability; without a properly fashioned skew back, the arch could not maintain its integrity under load, potentially leading to structural failure. The skew back shapes the way the bricks are laid to form the arch and is integral to the overall arch design, allowing it to distribute weight effectively to its supports. Understanding how the skew back functions is vital for any bricklayer working with arches in construction, as it contributes to the longevity and safety of the masonry work.