Arch Construction

What is an arch in masonry used for?

When constructing arches, the brickwork or stonework will require some form of ______ support until the mortar is set and the shaped units are in place.

• temporary

• permanent

• structural

• decorative

What is the term for the outer curve of an arch?

• A) Intrados

• B) Extrados

• C) Span

• D) Rise

Fill in the blank: The _______ is the inner curve of the arch.

• Intrados.

• Extrados.

• Keystone.

• Voussoir.

Fill in the blank: ________ is the outside edge of the arch. This is also a term used when setting out the arch.

• Extrados

• Intrados

• Keystone

• Voussoir

Fill in the blank: ________ is the inclined surface of brickwork from which a segmental arch springs.

• Skewback

• Keystone

• Voussoir

• Springer

What is the dimension of the brick that will be the face of the arch in a single ring format?

• 200mm

• 215mm

• 250mm

What is one advantage of bonded arch faces over double ring construction?

• A) Less aesthetic appeal

• B) More aesthetic appeal

• C) Less acceptable to large span applications

• D) More complex construction.

What type of arch is shown in the diagram?

• Pointed arch

• Semi-circular arch

• Flat arch

• Horseshoe arch

What is the central brick at the top of an arch called?

• Skewback

• Key brick

• Striking line

• Arch centre